rru user guide(v200_03)

RRU

V200

User Guide

Issue 03

Date 2008-04-30

Part Number

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Copyright © Huawei Technologies Co., Ltd. 2008. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

http://www.huawei.com

mailto:[email protected]

Contents

About This Document.....................................................................................................................1

1 Safety Information.....................................................................................................................1-11.1 Safety Precautions...........................................................................................................................................1-11.2 Electricity Safety.............................................................................................................................................1-31.3 Inflammable Environment...............................................................................................................................1-51.4 Battery.............................................................................................................................................................1-51.5 Radiation.........................................................................................................................................................1-71.6 Working at Heights.........................................................................................................................................1-91.7 Mechanical Safety.........................................................................................................................................1-111.8 Others............................................................................................................................................................1-12

2 RRU and SRXU Hardware........................................................................................................2-12.1 RRU Equipment..............................................................................................................................................2-2

2.1.1 Appearance of the RRU.........................................................................................................................2-22.1.2 LEDs on the RRU..................................................................................................................................2-32.1.3 Panels of the RRU..................................................................................................................................2-4

2.2 SRXU Equipment............................................................................................................................................2-62.2.1 Appearance of the SRXU.......................................................................................................................2-72.2.2 LEDs on the SRXU................................................................................................................................2-72.2.3 Panels of the SRXU................................................................................................................................2-8

2.3 RRU Cables...................................................................................................................................................2-102.3.1 PGND Cable of the RRU.....................................................................................................................2-112.3.2 Power Cable of the RRU......................................................................................................................2-112.3.3 CPRI Optical Cable..............................................................................................................................2-122.3.4 AISG Multi-Wire Cable of the RRU/SRXU........................................................................................2-132.3.5 AISG Extension Cable of the RRU/SRXU..........................................................................................2-142.3.6 RF Jumper of the RRU/SRXU.............................................................................................................2-152.3.7 Alarm Cable of the RRU......................................................................................................................2-18

2.4 SRXU Cables................................................................................................................................................2-192.4.1 PGND Cable of the SRXU...................................................................................................................2-202.4.2 Power Cable of the SRXU...................................................................................................................2-202.4.3 AISG Multi-Wire Cable of the RRU/SRXU........................................................................................2-212.4.4 AISG Extension Cable of the RRU/SRXU..........................................................................................2-22

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2.4.5 CPRI Optical Cable..............................................................................................................................2-232.4.6 RF Jumper of the RRU/SRXU.............................................................................................................2-24

3 Installing RRU and SRXU Hardware.....................................................................................3-13.1 Information About the Installation..................................................................................................................3-3

3.1.1 Installation Modes of the RRU and SRXU............................................................................................3-33.1.2 Space Requirements of the RRU and SRXU.........................................................................................3-73.1.3 Cabling Specifications for the NodeB..................................................................................................3-113.1.4 Requirements for the RRU Cabling on a Tower..................................................................................3-133.1.5 Connections of RRU and SRXU Cables..............................................................................................3-193.1.6 Labels for DBS3900 Cables.................................................................................................................3-23

3.2 Procedure for Installing the RRU and SRXU...............................................................................................3-263.3 Preparing for the NodeB Installation............................................................................................................3-27

3.3.1 Unpacking Inspection for the NodeB...................................................................................................3-273.3.2 Tools and Instruments for NodeB Installation.....................................................................................3-29

3.4 Installing the RRU on the Ground or Rooftop..............................................................................................3-303.4.1 Installing a Single RRU........................................................................................................................3-303.4.2 Installing Two RRUs............................................................................................................................3-423.4.3 Installing Three RRUs..........................................................................................................................3-57

3.5 Installing the RRU on the Tower..................................................................................................................3-753.5.1 Assembling the Parts of the RRU........................................................................................................3-753.5.2 Lifting the Assembled RRU.................................................................................................................3-793.5.3 Installing the Assembled RRU on the Tower.......................................................................................3-80

3.6 Installing the SRXU......................................................................................................................................3-833.6.1 Installing the SRXU on a Single RRU.................................................................................................3-843.6.2 Installing the SRXUs on the Two RRUs..............................................................................................3-873.6.3 Installing the SRXUs on the Three RRUs............................................................................................3-94

3.7 Installing RRU and SRXU Cables................................................................................................................3-973.7.1 Installing the PGND Cable of the RRU/SRXU...................................................................................3-983.7.2 Installing the -48 V DC Power Cable of the RRU/SRXU.................................................................3-1003.7.3 Installing the RF Jumper of the RRU/SRXU.....................................................................................3-1063.7.4 Installing the CPRI Optical Cable of the RRU/SRXU.......................................................................3-1083.7.5 Installing the Alarm Cable of the RRU..............................................................................................3-1123.7.6 Installing the AISG Multi-Wire Cable of the RRU/SRXU................................................................3-1133.7.7 Installing the AISG Extension Cable of the RRU/SRXU..................................................................3-1143.7.8 Opening and Closing the Cover Plate of the RRU Cabling Cavity...................................................3-1143.7.9 Opening and Closing the Cover Plate of the SRXU Cabling Cavity.................................................3-116

3.8 Powering On the RRU/SRXU.....................................................................................................................3-1183.9 Installing the Housing of the RRU and SRXU...........................................................................................3-1203.10 Checklists for Hardware Installation of Distributed NodeBs and Mini NodeBs......................................3-121

4 Maintaining RRU and SRXU Hardware................................................................................4-14.1 Equipment Maintenance Items for the RRU/SRXU.......................................................................................4-24.2 Powering On/Off the RRU/SRXU..................................................................................................................4-2

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4.2.1 Powering On the RRU/SRXU................................................................................................................4-24.2.2 Powering Off the RRU/SRXU...............................................................................................................4-4

4.3 Replacing an RRU...........................................................................................................................................4-44.4 Replacing an SRXU........................................................................................................................................4-64.5 Replacing an Optical Module..........................................................................................................................4-8

Index.................................................................................................................................................i-1

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Figures

Figure 1-1 Wearing an ESD wrist strap...............................................................................................................1-5Figure 1-2 Lifting a weight................................................................................................................................1-10Figure 1-3 Slant angle........................................................................................................................................1-11Figure 1-4 One meter higher than the eave........................................................................................................1-11Figure 2-1 RRU....................................................................................................................................................2-2Figure 2-2 Panels of the RRU..............................................................................................................................2-5Figure 2-3 SRXU..................................................................................................................................................2-7Figure 2-4 Panels of the SRXU............................................................................................................................2-9Figure 2-5 PGND cable......................................................................................................................................2-11Figure 2-6 2-hole terminal..................................................................................................................................2-11Figure 2-7 –48 V DC power cable.....................................................................................................................2-12Figure 2-8 CPRI optical cable............................................................................................................................2-13Figure 2-9 AISG multi-wire cable......................................................................................................................2-14Figure 2-10 AISG extension cable.....................................................................................................................2-15Figure 2-11 Feeder jumper.................................................................................................................................2-16Figure 2-12 Interconnect jumper........................................................................................................................2-16Figure 2-13 Alarm cable.....................................................................................................................................2-18Figure 2-14 PGND cable....................................................................................................................................2-20Figure 2-15 2-hole terminal................................................................................................................................2-20Figure 2-16 DC power cable..............................................................................................................................2-20Figure 2-17 AISG multi-wire cable....................................................................................................................2-21Figure 2-18 AISG extension cable.....................................................................................................................2-22Figure 2-19 CPRI optical cable..........................................................................................................................2-23Figure 2-20 Feeder jumper.................................................................................................................................2-24Figure 2-21 Interconnect jumper........................................................................................................................2-25Figure 3-1 Installation modes of one RRU..........................................................................................................3-4Figure 3-2 Installation modes of one RRU and one SRXU.................................................................................3-4Figure 3-3 Installation modes of two RRUs.........................................................................................................3-5Figure 3-4 Installation modes of two RRUs and two SRXUs..............................................................................3-5Figure 3-5 Installation modes of three RRUs.......................................................................................................3-6Figure 3-6 Installation modes of three RRUs and three SRXUs..........................................................................3-7Figure 3-7 Recommended space requirements of one RRU with and without the SRXU (unit: mm)................3-8Figure 3-8 Minimal space requirements of one RRU with and without the SRXU (unit: mm)...........................3-9

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Figure 3-9 Space requirements of two combined RRUs (unit: mm)....................................................................3-9Figure 3-10 Recommended space requirements of multiple RRUs with and without the SRXUs (unit: mm).............................................................................................................................................................................3-10Figure 3-11 Minimal space requirements of multiple RRUs with and without the SRXUs (unit: mm)............3-11Figure 3-12 Scenario of RRU cabling on a tower..............................................................................................3-14Figure 3-13 PVC protection tube.......................................................................................................................3-15Figure 3-14 Installing the cable clip...................................................................................................................3-16Figure 3-15 Routing the cables in the cable rack...............................................................................................3-17Figure 3-16 Installing the cable clip on the tower..............................................................................................3-18Figure 3-17 Routing the cables in the cable rack...............................................................................................3-19Figure 3-18 Cable connections of one RRU without the SRXU........................................................................3-20Figure 3-19 Cable connections of one RRU with the SRXU.............................................................................3-21Figure 3-20 Cable connections of multiple RRUs without the SRXUs.............................................................3-22Figure 3-21 Cable connections of multiple RRUs with the SRXUs..................................................................3-22Figure 3-22 Label for the BBU power cable (unit: mm)....................................................................................3-23Figure 3-23 Label for the RRU power cable (unit: mm)....................................................................................3-23Figure 3-24 Label for the E1 cable (unit: mm)...................................................................................................3-24Figure 3-25 Label for the CPRI optical cable (unit: mm)..................................................................................3-24Figure 3-26 Label for the RRU alarm cable (unit: mm).....................................................................................3-25Figure 3-27 Label for the BBU alarm cable (unit: mm).....................................................................................3-25Figure 3-28 Leading cable ties through the holes..............................................................................................3-25Figure 3-29 Binding the label to the cable.........................................................................................................3-26Figure 3-30 Mounting the upper fixture assembly.............................................................................................3-31Figure 3-31 Holes in the fixture assembly.........................................................................................................3-31Figure 3-32 Measuring L1 and L2.....................................................................................................................3-32Figure 3-33 Holes in the multi-purpose attachment plate..................................................................................3-32Figure 3-34 Securing the multi-purpose attachment plate to the mounting plate..............................................3-33Figure 3-35 Installing the third pole fixture.......................................................................................................3-33Figure 3-36 Installing the mounting plate..........................................................................................................3-34Figure 3-37 Mounting the lower fixture assembly.............................................................................................3-35Figure 3-38 Installed expansion bolt assemblies and the RRU..........................................................................3-36Figure 3-39 Determining the anchor points.......................................................................................................3-36Figure 3-40 Drilling a hole and installing the expansion bolt assembly............................................................3-37Figure 3-41 Securing the mounting plate...........................................................................................................3-38Figure 3-42 Filling tube, insulating washer, and insulating block.....................................................................3-38Figure 3-43 One RRU in ordinary mode and the other in reverse mode...........................................................3-39Figure 3-44 Securing the attachment plate.........................................................................................................3-40Figure 3-45 Installing the module......................................................................................................................3-41Figure 3-46 Securing the module.......................................................................................................................3-42Figure 3-47 Top view of the two modules using the side-mounted installation method...................................3-43Figure 3-48 Top view of the two modules using the rear-mounted installation method...................................3-44Figure 3-49 Holes in the multi-purpose attachment plate..................................................................................3-44Figure 3-50 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-44

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Figure 3-51 Installing the second mounting plate..............................................................................................3-45Figure 3-52 Securing the second mounting plate to the first one.......................................................................3-46Figure 3-53 Installing the second mounting plate..............................................................................................3-47Figure 3-54 Securing the second mounting plate...............................................................................................3-47Figure 3-55 Holes in the multi-purpose attachment plate..................................................................................3-48Figure 3-56 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-48Figure 3-57 Installing the second mounting plate..............................................................................................3-49Figure 3-58 Securing the second mounting plate to the first one.......................................................................3-50Figure 3-59 Removing the plastic housing.........................................................................................................3-51Figure 3-60 Installing the module in reverse mode in the housing....................................................................3-52Figure 3-61 Securing the attachment plate to the module that is in reverse mode.............................................3-52Figure 3-62 Installing the first module...............................................................................................................3-53Figure 3-63 Securing the first module................................................................................................................3-54Figure 3-64 Securing the attachment plate to the module that is in ordinary mode...........................................3-55Figure 3-65 Installing the second module..........................................................................................................3-55Figure 3-66 Securing the second module...........................................................................................................3-56Figure 3-67 Rear-mounted RRUs with the cabling cavities on the same side...................................................3-57Figure 3-68 Top view of the three modules using the side-mounted installation method.................................3-58Figure 3-69 Top view of the three modules using the hybrid installation method.............................................3-59Figure 3-70 Holes in the multi-purpose attachment plate..................................................................................3-59Figure 3-71 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-60Figure 3-72 Installing the second mounting plate..............................................................................................3-60Figure 3-73 Securing the second mounting plate to the first one.......................................................................3-61Figure 3-74 Installing the third mounting plate..................................................................................................3-62Figure 3-75 Securing the third mounting plate to the first one..........................................................................3-63Figure 3-76 Holes in the multi-purpose attachment plate..................................................................................3-63Figure 3-77 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-64Figure 3-78 Installing the second mounting plate..............................................................................................3-64Figure 3-79 Securing the second mounting plate to the first one.......................................................................3-65Figure 3-80 Installing the third mounting plate..................................................................................................3-66Figure 3-81 Securing the second mounting plate to the first one.......................................................................3-67Figure 3-82 Securing the attachment plate to the first module..........................................................................3-68Figure 3-83 Installing the first module...............................................................................................................3-69Figure 3-84 Securing the first module................................................................................................................3-70Figure 3-85 Removing the plastic housing.........................................................................................................3-70Figure 3-86 Installing the module in reverse mode in the housing....................................................................3-71Figure 3-87 Securing the attachment plate to the module that is in reverse mode.............................................3-71Figure 3-88 Installing the second module..........................................................................................................3-72Figure 3-89 Securing the second module...........................................................................................................3-73Figure 3-90 Installing the third module..............................................................................................................3-74Figure 3-91 Securing the third module...............................................................................................................3-75Figure 3-92 Holes in the multi-purpose attachment plate..................................................................................3-76



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Figure 3-93 Securing the multi-purpose attachment plate.................................................................................3-76Figure 3-94 Installing a pole fixture...................................................................................................................3-77Figure 3-95 Securing the attachment plate.........................................................................................................3-77Figure 3-96 Assembling the module and mounting plate..................................................................................3-78Figure 3-97 Securing the module and mounting plate.......................................................................................3-79Figure 3-98 Assembled RRU tied with the rope................................................................................................3-79Figure 3-99 Mounting the upper fixture assembly.............................................................................................3-80Figure 3-100 Holes in the fixture assembly.......................................................................................................3-81Figure 3-101 Measuring L1 and L2...................................................................................................................3-81Figure 3-102 Installing the assembled RRU......................................................................................................3-82Figure 3-103 Mounting the lower fixture assembly...........................................................................................3-83Figure 3-104 SRXU installed on the single RRU..............................................................................................3-84Figure 3-105 Removing the plastic housing.......................................................................................................3-85Figure 3-106 Securing the connecting boards....................................................................................................3-85Figure 3-107 Securing the attachment plate to the SRXU.................................................................................3-86Figure 3-108 Installing the SRXU......................................................................................................................3-86Figure 3-109 Securing the SRXU......................................................................................................................3-87Figure 3-110 SRXUs installed on the two RRUs...............................................................................................3-88Figure 3-111 Removing the plastic housings.....................................................................................................3-89Figure 3-112 Securing the connecting boards to the RRU module that is in ordinary mode.............................3-90Figure 3-113 Securing the attachment plate to one SRXU................................................................................3-90Figure 3-114 Installing the SRXU......................................................................................................................3-91Figure 3-115 Securing the SRXU......................................................................................................................3-92Figure 3-116 Removing the plastic housings.....................................................................................................3-93Figure 3-117 SRXUs installed on the two rear-mounted RRUs........................................................................3-93Figure 3-118 SRXUs installed on the three RRUs.............................................................................................3-94Figure 3-119 Removing the plastic housings.....................................................................................................3-95Figure 3-120 Securing the connecting boards....................................................................................................3-96Figure 3-121 Installing the third SRXU.............................................................................................................3-96Figure 3-122 Securing the third SRXU..............................................................................................................3-97Figure 3-123 Connecting the PGND cable (1)...................................................................................................3-98Figure 3-124 Connecting the OT terminal.........................................................................................................3-99Figure 3-125 Connecting the PGND cable (2)...................................................................................................3-99Figure 3-126 Cable trough for the PGND cable of the SRXU.........................................................................3-100Figure 3-127 Power cable with two OT terminals...........................................................................................3-101Figure 3-128 Determining lengths of power cable for different operation......................................................3-101Figure 3-129 Stripping the cable......................................................................................................................3-102Figure 3-130 Two OT terminals on the power cable.......................................................................................3-102Figure 3-131 Removing the jacket from the power cable................................................................................3-103Figure 3-132 Cable troughs in the cabling cavity............................................................................................3-103Figure 3-133 Opening the cover.......................................................................................................................3-104Figure 3-134 Shielding layer pressed by the strap...........................................................................................3-104

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Figure 3-135 Twisting the shielding layer into one strand...............................................................................3-105Figure 3-136 Power cable with the heat-shrinkable tube.................................................................................3-105Figure 3-137 Waterproofed joints....................................................................................................................3-107Figure 3-138 CPRI_W port in the RRU cabling cavity...................................................................................3-109Figure 3-139 Strap and waterproof filler..........................................................................................................3-110Figure 3-140 CPRI_W port in the SRXU cabling cavity.................................................................................3-111Figure 3-141 Cable trough for the optical cable in the SRXU cabling cavity.................................................3-112Figure 3-142 Cable troughs in the cabling cavity............................................................................................3-113Figure 3-143 Loosening the six captive screws...............................................................................................3-115Figure 3-144 Opening the cover plate..............................................................................................................3-115Figure 3-145 Tightening the screws.................................................................................................................3-116Figure 3-146 Loosening the six captive screws...............................................................................................3-117Figure 3-147 Opening the cover plate..............................................................................................................3-117Figure 3-148 Tightening the screws.................................................................................................................3-118Figure 3-149 Installing the housing..................................................................................................................3-120Figure 3-150 Securing the housing..................................................................................................................3-121Figure 4-1 Removing the screws at the bottom of the mounting plate................................................................ 4-5Figure 4-2 Removing the screws at the bottom of the SRXU..............................................................................4-7



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Tables

Table 2-1 LEDs on the RRU................................................................................................................................ 2-3Table 2-2 Ports and LEDs on the panels of the RRU...........................................................................................2-6Table 2-3 LEDs on the SRXU..............................................................................................................................2-7Table 2-4 Ports and LEDs on the panels of the SRXU......................................................................................2-10Table 2-5 Pin assignment for the wires of the –48 V DC power cable (North American Standard).................2-12Table 2-6 Pin assignment for the wires of the –48 V DC power cable (European Standard)............................2-12Table 2-7 Pin assignment for the fiber tails of the CPRI optical cable..............................................................2-13Table 2-8 Installation positions of the CPRI optical cable.................................................................................2-13Table 2-9 Pin assignment for the wires of the AISG multi-wire cable..............................................................2-14Table 2-10 Pin assignment for the wires of the AISG extension cable..............................................................2-15Table 2-11 RF jumper connections of the RRU.................................................................................................2-17Table 2-12 Pin assignment for the wires of the alarm cable...............................................................................2-19Table 2-13 Pin assignment for the wires of the DC power cable.......................................................................2-21Table 2-14 Pin assignment for the wires of the AISG multi-wire cable............................................................2-22Table 2-15 Pin assignment for the wires of the AISG extension cable..............................................................2-23Table 2-16 Pin assignment for the fiber tails of the CPRI optical cable............................................................2-24Table 2-17 Installation positions of the CPRI optical cable...............................................................................2-24Table 2-18 RF jumper connections of the RRU.................................................................................................2-25Table 3-1 Tools and instruments........................................................................................................................3-29Table 3-2 Connecting the antenna jumper to the appropriate RF port.............................................................3-106Table 3-3 LEDs on the RRU............................................................................................................................3-119Table 3-4 LEDs on the SRXU..........................................................................................................................3-119Table 3-5 Checklist for NodeB installation......................................................................................................3-121Table 3-6 Checklist for cable connections.......................................................................................................3-122Table 3-7 Checklist for power cable connections.............................................................................................3-122Table 3-8 Checklist for PGND cable connections............................................................................................3-123Table 3-9 Checklist for signal cable connections.............................................................................................3-123Table 4-1 Equipment maintenance items for the RRU/SRXU.............................................................................4-2Table 4-2 LEDs on the RRU................................................................................................................................ 4-3Table 4-3 LEDs on the SRXU..............................................................................................................................4-3

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About This Document

PurposeThis document describes the RRU hardware and provides instructions in hardware installation,cable connections, hardware installation check, and hardware maintenance. This document isapplicable to RRU3804 and RRU3801E.

Product VersionsThe following table lists the product versions related to this document.

Product Name Product Version

RRU V100R009

V100R010

V200R010

Intended AudienceThis document is intended for:

l NodeB installers

l System engineers

l Site maintenance engineers

Change HistoryFor changes in the document, refer to Changes in RRU3804 User Guide.

Organization1 Safety Information

2 RRU and SRXU Hardware

This describes the RRU equipment, SRXU equipment, and related cables.

3 Installing RRU and SRXU Hardware

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1

This describes how to install the hardware, route the cables, and check the hardware installationof the RRU and SRXU.

4 Maintaining RRU and SRXU Hardware

After the RRU and SRXU are deployed, accepted, and put into use, routine maintenance isperformed to ensure the functionality of the modules.

Conventions1. Symbol Conventions

The following symbols may be found in this document. They are defined as follows

Symbol Description

DANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.

WARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.

CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save yourtime.

NOTE Provides additional information to emphasize or supplementimportant points of the main text.

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files,directories,folders,and users are in boldface. Forexample,log in as user root .

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

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[ ] Items (keywords or arguments) in square brackets [ ] are optional.

{x | y | ...} Alternative items are grouped in braces and separated by verticalbars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by verticalbars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by verticalbars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions


Boldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface. For example,click OK.

> Multi-level menus are in boldface and separated by the ">" signs.For example,choose File > Create > Folder .

5. Keyboard Operation


Key Press the key.For example,press Enter and press Tab.

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.

Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.

6. Mouse Operation

Action Description

Click Select and release the primary mouse button without moving thepointer.

Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.

Drag Press and hold the primary mouse button and move the pointerto a certain position.

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3

1 Safety Information

1.1 Safety PrecautionsThis section describes certain safety precautions and helps to choose the measurement deviceand testing device. Read and follow these safety precautions before installing, operating, andmaintaining Huawei devices.

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully tominimize the possibility of accidents.

The Danger, Caution, and Note items in the package of documents do not cover all the safetyprecautions that must be followed. They only provide the generic safety precautions foroperations.

Symbols

DANGERThis symbol indicates that casualty or serious accident may occur if you ignore the safetyinstruction.

CAUTIONThis symbol indicates that serious or major injury may occur if you ignore the safety instruction.

NOTE

This symbol indicates that the operation may be easier if you pay attention to the safety instruction.

RRUUser Guide 1 Safety Information


1-1

Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautionsprovided in the documents are supplementary. You must comply with the local safetyregulations.

General Installation Requirements

The personnel in charge of installation and maintenance must be trained and master the correctoperating methods and safety precautions before beginning work.

The rules for installing and maintaining the device are as follows:

l Only the trained and qualified personnel can install, operate and maintain the device.

l Only the qualified specialists are allowed to remove the safety facilities, and repair thedevice.

l Any replacement of the device or part of the device (including the software) or any changemade to the device must be performed by qualified or authorized personnel of Huawei.

l Any fault or error that might cause safety problems must be reported immediately to thepersonnel in charge.

Grounding Requirements

The following requirements are applicable to the device to be grounded:

l Ground the device before installation and remove the ground cable after uninstallation.

l Do not operate the device in the absence of a ground conductor. Do not damage the groundconductor.

l The unit (or system) must be permanently connected to the protection ground beforeoperation. Check the electrical connection of the device before operation and ensure thatthe device is reliably grounded.

Safety of Personnel

Ensure the following:

l When lightning strikes, do not operate the device and cables.

l When lightning strikes, unplug the AC power connector. Do not use the fixed terminal ortouch the terminal or antenna connector.

NOTE

The previous two requirements are suitable for the wireless fixed terminal.

l To prevent electric shock, do not connect safety extra-low voltage (SELV) circuits totelecommunication network voltage (TNV) circuits.

l To prevent laser radiation from injuring your eyes, never look into the optical fiber outletwith unaided eyes.

l To prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, glovesand wrist strap, and remove conductors such as jewelry and watch before operation.

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Device Safetyl Before operation, the device must be secured on the floor or other fixed objects, such as

the walls and the mounting racks.l Do not block ventilation openings while the system is running.

l When installing the panel, tighten the screw with the tool.

1.2 Electricity Safety

High Voltage

DANGERl The high voltage power supply provides power for running the system. Direct contact with

the high voltage power supply or contact through damp objects may result in fatal danger.l Non-standard and improper high voltage operations may result in fire and electric shock.

l The personnel who install the AC facility must be qualified to perform operations on highvoltage and AC power supply facilities.

l When installing the AC power supply facility, follow the local safety regulations.

l When operating the AC power supply facility, follow the local safety regulations.

l When operating the high voltage and AC power supply facilities, use the specific toolsinstead of common tools.

l When the operation is performed in a damp environment, ensure that water is kept off thedevice. If the cabinet is damp or wet, shut down the power supply immediately.

ThunderstormThe following requirements are suitable only for the wireless base station or the device with anantenna or GPS antenna.

DANGERIn a thunderstorm, do not perform operations on high voltage and AC power supply facilities oron a steel tower and mast.

High Electrical Leakage

CAUTIONGround the device before powering on the device. Otherwise, the personnel and device are indanger.



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If the "high electrical leakage" flag is stuck to the power terminal of the device, you must groundthe device before powering it on.

Power Cable

CAUTIONDo not install and remove the power cable with a live line. Transient contact between the coreof the power cable and the conductor may generate electric arc or spark, which may cause fireor eye injury.

l Before installing or removing the power cable, turn off the power switch.

l Before connecting the power cable, ensure that the power cable and label comply with therequirements of the actual installation.

Fuse

CAUTIONTo ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same typeand specifications.

Electrostatic Discharge

CAUTIONThe static electricity generated by the human body may damage the electrostatic sensitivecomponents on the circuit board, such as the large-scale integrated circuit (LIC).

In the following situations, the human body generates a static electromagnetic field:

l Movement of body parts

l Clothes friction

l Friction between shoes and the ground

l Holding plastic in hand

The static electromagnetic field will remain within the human body for a long time.

Before contacting the device, plug boards, circuit boards, and application specific integratedcircuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components frombeing damaged by the static electricity in the human body.

Figure 1-1shows how to wear an ESD wrist strap.


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Figure 1-1 Wearing an ESD wrist strap

1.3 Inflammable Environment

DANGERDo not place the device in the environment that has inflammable and explosive air or fog. Donot perform any operation in this environment.

Any operation of the electrical device in the inflammable environment causes danger.

1.4 Battery

Storage Battery

DANGERBefore handling the storage battery, read the safety precautions for the handling and connectionof the storage battery.

Incorrect operation of storage batteries may cause danger. During operation, ensure thefollowing:

l Prevent any short-circuit.

l Prevent the electrolyte from overflowing and leakage.

Electrolyte overflow may damage the device. It will corrode the metal parts and the circuitboards, and ultimately damage the device and cause short-circuit of the circuit boards.



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General Operations

Before installing and maintaining the storage battery, ensure the following:

l Use special insulation tools.

l Use eye protection devices and operate with care.

l Wear rubber gloves and an apron in case of an electrolyte overflow.

l Always keep the battery upright when moving. Do not place the battery upside down or tiltit.

Short-Circuit

DANGERShort-circuit of the battery may cause injury. Although the voltage of a battery is low, hightransient current generated by short-circuit will release a surge of power.

Keep metal objects away from the battery to prevent short circuit. If they have to be used,disconnect the battery in use before performing any other operation.

Harmful Gas

CAUTIONl Do not use unsealed lead-acid storage batteries, because the gas emitted from it may result

in fire or device corrosion.

l Lay the storage battery horizontally and fix it properly.

The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place withgood ventilation and take precautions against fire.

High Temperature

CAUTIONHigh temperature may result in distortion, damage, and electrolyte overflow of the battery.

When the temperature of the battery exceeds 60oC, check whether there is acid overflow. If acidoverflow occurs, handle the acid immediately.


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Acid

CAUTIONIf the acid overflows, it should be absorbed and neutralized immediately.

When handling a leaky battery, protect against the possible damage caused by the acid. Use thefollowing materials to absorb and neutralize acid spills:

l Sodium bicarbonate (baking soda): NaHCO3

l Sodium carbonate (soda): Na2CO3

Antacids must be used according to the instructions provided by the battery manufacturer.

Lithium Battery

CAUTIONThere is danger of explosion if the battery is incorrectly replaced.

l Replace the lithium battery with the same or equivalent type recommended by themanufacturer.

l Dispose of the used battery according to the instructions provided by the manufacturer.

l Do not dispose of the lithium battery in fire.

1.5 Radiation

Electromagnetic Field Exposure

CAUTIONHigh power radio-frequency signals are harmful to human body.

Before installing or maintaining an antenna on a steel tower or mast with a large number oftransmitter antennas, the operator should coordinate with all parties to ensure that the transmitterantennas are shut down.

The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for theinstallation and operation of BTSs are given in the following section. Operators are also requiredto comply with the related local regulations on erecting BTSs.

l The antenna should be located in an area that is inaccessible to the public where the RFradiation exceeds the stipulated value.



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l If the areas where RF radiation exceeds the stipulated value are accessible to workers,ensure that workers know where these areas are. They can shut down the transmitters beforeentering these areas. Such areas may not exist; but if they exist, the areas must be within arange of less than 10 m around the antennas.

l Each forbidden zone should be indicated by a physical barrier and striking sign to warn thepublic or workers.

Laser

CAUTIONWhen handling optical fibers, do not stand close to, or look into the optical fiber outlet withunaided eyes.

Laser transceivers or transmitters are used in the optical transmission system and associated testtools. Because the laser that is transmitted through the optical fiber produces a small beam oflight, it has a very high power density and is invisible to human eyes. If a beam of light entersthe eye, the retina may be damaged.

Normally, staring into the end of an unterminated optical fiber or broken optical fiber with theunaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyesmay, however, be damaged if an optical tool such as a microscope, magnifying glass or eyeloupe is used to stare into the bare optical fiber end.

Read the following guidelines to prevent laser radiation:

l Only the trained and authorized personnel can perform the operation.

l Wear a pair of eye-protective glasses when you are handling lasers or optical fibers.

l Ensure that the optical source is switched off before disconnecting optical fiber connectors.

l Never look into the end of an exposed optical fiber or an open connector if you cannotensure that the optical source is switched off.

l To ensure that the optical source is switched off, use an optical power meter.

l Before opening the front door of an optical transmission system, ensure that you are notexposed to laser radiation.

l Never use an optical tool such as a microscope, a magnifying glass, or an eye loupe to lookinto the optical fiber connector or end.

Read the following instructions before handling optical fibers:

l Only the trained personnel can cut and splice optical fibers.

l Before cutting or splicing an optical fiber, ensure that the optical fiber is disconnected fromthe optical source. After disconnecting the optical fiber, use protecting caps to protect allthe optical connectors.


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1.6 Working at Heights

CAUTIONWhen working at heights, ensure that the objects do not fall.

When working at heights, ensure that the following requirements must be met:

l The personnel who work at heights must be trained.

l The operating machines and tools should be carried and handled safely to prevent themfrom falling.

l Safety measures, such as wearing a helmet and a safety belt, should be taken.

l In cold regions, warm clothes should be worn before working at heights.

l Ensure that the lifting appliances are well prepared for working at heights.

Lifting Weights

CAUTIONDo not access the areas under the arm of the crane and the goods in suspension when liftingweights.

l Ensure that the operators have been trained and qualified.

l Check the weight lifting tools and ensure that they are intact.

l Lift the weight only when the weight lifting tools are firmly mounted onto the weight-bearing object or the wall.

l Use a concise instruction to prevent incorrect operation.

l The angle between the two cables should be less than or equal to 90o in the lifting of weights(See Figure 1-2).



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Figure 1-2 Lifting a weight

Safety Guide on Ladder UseChecking the Ladder

l Check the ladder before using it. Check the maximum weight that the ladder can support.

l Never overload the ladder.

Placing the Ladder

l The slant angle is preferred to be 75o. The slant can be measured with the angle square orwith arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladderon the ground and take protective measures on the base of the ladder against slippage. Placethe ladder on a stable ground.

When climbing the ladder, ensure the following:

l The gravity of the body does not shift from the edge of the ladder.

l Keep balance on the ladder before performing any operation.

l Do not climb higher than the fourth highest step of the ladder.

If you tend to climb to the roof, the length of the ladder should be at least one meter higher thanthe eave, as shown in Figure 1-4.


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Figure 1-3 Slant angle

Figure 1-4 One meter higher than the eave

1.7 Mechanical Safety

Drilling

CAUTIONDo not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damagethe electromagnetic shielding and internal cables. Metal shavings from the drilling may resultin a short-circuit of the circuit board if they get into the cabinet.

l Before drilling a hole on the cabinet, remove the cables from the cabinet.



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l During the drilling, wear blinkers to protect your eyes.

l During the drilling, wear the protective gloves.

l Prevent the metal shavings from getting into the cabinet. After drilling, clean the metalshavings in time.

Handling Sharp Objects

CAUTIONWhen carrying the device by hand, wear the protective gloves to prevent injury by sharp objects.

Handling Fansl When replacing a component, place the component, screw, and tool at a safe place to prevent

them from falling into the running fan.l When replacing the ambient equipment around the fan, do not place the finger or board

into the running fan until the fan is switched off and stops running.

Moving Heavy ObjectsWear the protective gloves when moving heavy objects.

CAUTIONl Be careful when moving heavy objects.

l When moving the chassis outwards, be aware about the unfixed or heavy objects on thechassis to prevent injury.

l Two persons should be available to move a chassis; one person must not move a heavychassis. When moving a chassis, keep your back straight and move stably to prevent asprain.

l When moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold thehandle of the installed modules in the chassis, such as the power module, fan module, orboard.

1.8 Others

Inserting and Removing a Board

CAUTIONWhen inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to preventany bent pins on the backplane.


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l Insert the board along the guide rail.

l Avoid contact of one board with another to prevent short-circuit or damage.

l Do not remove the active board before powering off.

l When holding a board in hand, do not touch the board circuit, components, connectors, orconnection slots.

Bundling Signal Cables

CAUTIONBundle the signal cables separately from the strong current cables or high voltage cables.

Cabling RequirementsAt a very low temperature, movement of the cable may damage the plastic skin of the cable. Toensure the construction safety, comply with the following requirements:

l When installing cables, ensure that the environment temperature is above 0oC.

l If cables are stored in the place below 0oC, move the cables into a place at a roomtemperature and store the cables for more than 24 hours before installation.

l Move the cables with care, especially at a low temperature. Do not drop the cables directlyfrom the vehicle.



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2 RRU and SRXU Hardware

About This Chapter

This describes the RRU equipment, SRXU equipment, and related cables.

2.1 RRU EquipmentThe RRU is a remote radio unit.

2.2 SRXU EquipmentThe SRXU is an extended RF interface module that provides two RX channels for RF signals.

2.3 RRU CablesThe RRU cables include the PGND cable, power cable, AISG multi-wire cable, AISG extensioncable, CPRI optical cable, RF jumper, and alarm cable.

2.4 SRXU CablesThe SRXU cables include the PGND cable, power cable, AISG multi-wire cable, AISGextension cable, CPRI optical cable, and RF jumper.

RRUUser Guide 2 RRU and SRXU Hardware


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2.1 RRU EquipmentThe RRU is a remote radio unit.

The RRU has the following functions:

l The RRU receives RF signals from the antenna system, down-converts the signals to IFsignals, and then transmits them to the BBU or the macro NodeB after amplification,analog-to-digital conversion, digital down-conversion, matched filtering, and DigitalAutomatic Gain Control (DAGC).

l The RRU receives downlink baseband signals from the BBU or the macro NodeB, forwardsdata received from its cascaded RRU, performs filtering and digital-to-analog conversion,and up-converts RF signals to the transmitting frequency band.

l The RRU multiplexes RX and TX signals over RF channels and filters the RX signals andTX signals. This enables the RX signals and TX signals to share the same antenna path.

2.1.1 Appearance of the RRUThe RRU features a modular structure with its ports at the module bottom and on the cablingcavity.

2.1.2 LEDs on the RRUThe LEDs, on the LED panel of the RRU, indicate the running status of the RRU.

2.1.3 Panels of the RRUThe RRU has a bottom panel, a cabling cavity panel, and an LED panel.

2.1.1 Appearance of the RRUThe RRU features a modular structure with its ports at the module bottom and on the cablingcavity.

Figure 2-1 shows the RRU. On the left is a front view of the RRU without the housing, in themiddle is a side view of the RRU without the housing, and on the right is a front view of theRRU housing.

Figure 2-1 RRU

2 RRU and SRXU HardwareRRU

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2.1.2 LEDs on the RRUThe LEDs, on the LED panel of the RRU, indicate the running status of the RRU.

For the positions of the LEDs on the RRU, refer to 2.1.3 Panels of the RRU.

Table 2-1 describes the LEDs and their status.

Table 2-1 LEDs on the RRU

Label Color Status Description

RUN Green ON The module has power input,yet the module is faulty.

OFF The module has no power inputor is reporting alarms.

1s ON, 1s OFF The module is operational.

0.5s ON, 0.5s OFF Software is being loaded to themodule.

ALM Red ON The RRU is reporting alarms(excluding VSWR-relatedalarms).

OFF The module is operational.

TX_ACT Green ON The module is running.

OFF No specific meaning

VSWR Red ON VSWR-related alarms arereported.

OFF No VSWR-related alarm isreported.

CPRI_W Red/Green ON (green) The CPRI link is normal.

ON (red) The optical module receiveslocal alarms related to LOS.

0.5s ON, 0.5s OFF(red)

The CPRI link is out of lock.

OFF The optical module is not inposition or is powered off.

CPRI_E Red/Green ON (green) The CPRI link is normal.






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2.1.3 Panels of the RRUThe RRU has a bottom panel, a cabling cavity panel, and an LED panel.

Figure 2-2 shows the panels of the RRU.


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Figure 2-2 Panels of the RRU

Table 2-2 describes the ports and LEDs on the panels of the SRXU.



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Table 2-2 Ports and LEDs on the panels of the RRU

No. Item Label Remarks

1 Ports at thebottom

RX_IN/OUT Port for interconnection betweencombined cabinets

RET/PWR_SRXU Port for the RET antenna or power outputto the SRXU

ANT_TX/RXA Port for main TX/RX diversity

ANT_RXB Port for RX diversity

2 Ports on thecabling cavity

RS485/EXT_ALM Port for alarms

CPRI_E Optical ports

CPRI_W

RTN(+) Ports for power supply

NEG(-)

PGND Grounding bolt

3 LED RUN For details, refer to 2.1.2 LEDs on theRRU.

ALM

TX_ACT

VSWR

CPRI_W

CPRI_E

2.2 SRXU EquipmentThe SRXU is an extended RF interface module that provides two RX channels for RF signals.

The SRXU receives RF signals from the antenna system, down-converts the RF signals to IFsignals, and then transmits them to the RRU after amplification, analog-to-digital conversion,digital down-conversion, matched filtering, and DAGC. The RRU forwards the signals to theBBU or the macro NodeB.

2.2.1 Appearance of the SRXUThe SRXU features a modular structure with its ports at the module bottom and on the cablingcavity.

2.2.2 LEDs on the SRXUThe LEDs, on the LED panel of the SRXU, indicate the running status of the SRXU.

2.2.3 Panels of the SRXUThe SRXU has a bottom panel, a cabling cavity panel, and an LED panel.


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2.2.1 Appearance of the SRXUThe SRXU features a modular structure with its ports at the module bottom and on the cablingcavity.

Figure 2-3 shows the SRXU. On the left is a front view of the SRXU, and on the right is a sideview of the SRXU.

Figure 2-3 SRXU

2.2.2 LEDs on the SRXUThe LEDs, on the LED panel of the SRXU, indicate the running status of the SRXU.

For the positions of the LEDs on the SRXU, refer to 2.2.3 Panels of the SRXU.

Table 2-3 describes the LEDs and their status.

Table 2-3 LEDs on the SRXU


RUN Green ON The module has power input,yet the module is faulty.

OFF The module has no power input,or the module is faulty.

1s ON, 1s OFF The module is operational.

0.5s ON, 0.5s OFF Software is being loaded to themodule.

ALM Red ON The module is reporting alarms.


CPRI_W Red/green ON (green) The CPRI link is normal.






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CPRI_E Red/green ON (green) The CPRI link is normal.





2.2.3 Panels of the SRXUThe SRXU has a bottom panel, a cabling cavity panel, and an LED panel.

Figure 2-4 shows the panels of the SRXU.


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Figure 2-4 Panels of the SRXU

Table 2-4 describes the ports and LEDs on the panels of the SRXU.



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Table 2-4 Ports and LEDs on the panels of the SRXU

No. Item Label Description

1 Ports at thebottom

PWR_SRXU Socket for power supply

ANT_RXC Port for RX diversity

ANT_RXD Port for RX diversity

RX_IN/OUT Port for interconnection betweencombined cabinets

RET Port for the RET antenna

2 Ports on thecabling cavity

CPRI_E Optical ports

CPRI_W

PGND Grounding bolt

3 LEDs RUN For details, refer to 2.1.2 LEDs on theRRU.

ALM

CPRI_W

CPRI_E

2.3 RRU CablesThe RRU cables include the PGND cable, power cable, AISG multi-wire cable, AISG extensioncable, CPRI optical cable, RF jumper, and alarm cable.

2.3.1 PGND Cable of the RRUThe PGND cable ensures the grounding of the RRU.

2.3.2 Power Cable of the RRUThe RRU uses a shielded -48 V DC power cable. The cable feeds external -48 V DC power tothe RRU.

2.3.3 CPRI Optical CableThis describes the CPRI optical cable. It connects the BBU3900 to the RRU and transmits CPRIsignals between them.

2.3.4 AISG Multi-Wire Cable of the RRU/SRXUThe five-meter-long AISG multi-wire cable connects the RRU/SRXU to the Remote ControlUnit (RCU). If both RRU and SRXU are installed, the AISG multi-wire cable only connects theSRXU and the RCU. This cable is optional.

2.3.5 AISG Extension Cable of the RRU/SRXUWhen the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-wire cable is not long enough to cover the distance. In this case, the AISG extension cable isused. The AISG extension cable is 15 m long.

2.3.6 RF Jumper of the RRU/SRXU


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The RF jumper of the RRU can be categorized into two types: feeder jumper and interconnectjumper. The interconnect jumper is optional, depending on the site configuration.

2.3.7 Alarm Cable of the RRUThe cable transmits the 2-channel Boolean alarm signals and 1-channel RS485 signals fromexternal devices to the RRU. Thus, the external signals are monitored.

2.3.1 PGND Cable of the RRUThe PGND cable ensures the grounding of the RRU.

Appearance

The green and yellow PGND cable is a single cable with a cross-sectional area of 16 mm2. Bothends of the cable are OT terminals. If you prepare the cable by yourself, it is recommended touse a copper-based cable with a minimum cross-sectional area of 16 mm2.

Figure 2-5 shows the PGND cable.

Figure 2-5 PGND cable

OT terminals need to be added on site. You can determine the color of the cable and whether touse 2-hole terminals according to local standards.

Figure 2-6 shows the 2-hole terminal.

Figure 2-6 2-hole terminal

Installation Position

One end of the PGND cable is connected to the grounding bolt on the RRU, and the other endis connected to the nearest grounding bar.

2.3.2 Power Cable of the RRUThe RRU uses a shielded -48 V DC power cable. The cable feeds external -48 V DC power tothe RRU.

Appearance

The cable has two OT terminals at one end and bare wire at the other end, as shown in Figure2-7.

The OT terminals need to be added on site.



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Figure 2-7 –48 V DC power cable

Pin Assignment

The -48 V DC power cable is a 2-wire cable. Table 2-5 and Table 2-6 describes the pinassignment for the wires of the -48 V DC power cable.

Table 2-5 Pin assignment for the wires of the –48 V DC power cable (North American Standard)

Wire Type Wire Color

NEG Blue

RTN Black

Table 2-6 Pin assignment for the wires of the –48 V DC power cable (European Standard)

Wire Type Wire Color

NEG Blue

RTN Brown


At one end of the cable, the OT terminal on the blue wire is connected to the NEG(-) port on thecabling cavity of the RRU, and the OT terminal on the black or brown wire is connected to theRTN(+) port on the cabling cavity of the RRU.

At the other end of the cable, a proper terminal is made depending on field requirements and isthen connected to the power supply system on site.


Appearance

The CPRI optical cable is a multi-mode 2-wire cable with DLC connectors at both ends. Figure2-8 shows the CPRI optical cable.


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Figure 2-8 CPRI optical cable

(1) DLC connector (2) Label on the fiber tail

(3) Fiber tail

Pin Assignment

Table 2-7 describes the pin assignment for the fiber tails of the CPRI optical cable.

Table 2-7 Pin assignment for the fiber tails of the CPRI optical cable

Label Color Connect to...

1A Orange RX port on the RRU

1B Gray TX port on the RRU

2A Orange TX port on the WBBPa

2B Gray RX port on the WBBPa


Table 2-8 describes the installation positions of the CPRI optical cable.

Table 2-8 Installation positions of the CPRI optical cable

One End The Other End

CPRI port on the WBBPa CPRI_W port on the RRU


Appearance

The cable has a waterproof DB9 connector at one end and a standard AISG female connector atthe other end, as shown in Figure 2-9.



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Figure 2-9 AISG multi-wire cable

Pin AssignmentTable 2-9 describes the pin assignment for the wires of the AISG multi-wire cable.

Table 2-9 Pin assignment for the wires of the AISG multi-wire cable

X1 End X2 End Wire Type Remarks

X1.1 X2.1 Twisted pair +12 V

X1.7 X2.7 Twisted pair DC-GND

X1.9 AISG_Switch

X1.3 X2.3 Twisted pair RS485 -

X1.5 X2.5 RS485 +

Installation PositionIf only the RRU is installed, the waterproof DB9 connector is linked to the RET/PWR_SRXUport at the bottom of the RRU, and the standard AISG female connector is linked to thecorresponding connector on the RCU or to the AISG extension cable.

If both the RRU and the SRXU are installed, the waterproof DB9 connector is linked to the RETport at the bottom of the SRXU, and the standard AISG female connector is linked to thecorresponding connector on the RCU or to the AISG extension cable.


AppearanceThe cable has a standard AISG male connector at one end and a standard AISG female connectorat the other end, as shown in Figure 2-10.


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Figure 2-10 AISG extension cable

Pin AssignmentTable 2-10 describes the pin assignment for the wires of the AISG extension cable.

Table 2-10 Pin assignment for the wires of the AISG extension cable

X1 End X2 End Wire Color Wire Type Remarks

X1.1 X2.1 White and blue Twisted pair +12 V

Blue

X1.7 X2.7 White and orange Twisted pair DC Return A

Orange

X1.3 X2.3 White and green Twisted pair RS485 B

X1.5 X2.5 Green RS485 A

X1.6 X2.6 White and brown Twisted pair +24 V

Brown

Installation PositionThe AISG female connector is linked to the corresponding connector on the RCU, and the AISGmale connector is linked to the AISG female connector of the AISG multi-wire cable.

2.3.6 RF Jumper of the RRU/SRXUThe RF jumper of the RRU can be categorized into two types: feeder jumper and interconnectjumper. The interconnect jumper is optional, depending on the site configuration.

2.3.6.1 Antenna Jumper of the RRU/SRXUThe antenna jumper transmits and receives RF signals.

2.3.6.2 Interconnect Jumper of the RRU/SRXU



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The interconnect jumper transmits RF signals between two RRUs or two SRXUs.

2.3.6.3 RF Jumper Connections of the RRUOne end of the RF jumper is connected to the RF ports on the RRU and the other end to thefeeder. Which RF port to use depends on the networking modes.

Antenna Jumper of the RRU/SRXU

The antenna jumper transmits and receives RF signals.

Appearance

The antenna jumper has a DIN male connector at each end, as shown in Figure 2-11.

Figure 2-11 Feeder jumper


The antenna jumper with indefinite length is selected according to the distance between theantenna and the RRU/SRXU. Connectors are made on site.l When the distance between the antenna and the RRU/SRXU is shorter than 14 m, the RRU/

SRXU is directly connected to the antenna through the antenna jumper.l When the distance between the antenna and the RRU/SRXU is longer than 14 m, the antenna

jumper should be shorter than 2 m. If you prepare the jumper by yourself, it is recommendedthat the feeder jumper be 2 m long at most. Ensure that the antenna jumper is connected tothe feeder before being connected to the RRU/SRXU and the antenna.

Interconnect Jumper of the RRU/SRXU

The interconnect jumper transmits RF signals between two RRUs or two SRXUs.

Appearance

The interconnect jumper is 2 m long and it has a 2W2 connector at each end, as shown in Figure2-12.

Figure 2-12 Interconnect jumper


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Installation PositionThe 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeledRX_IN/OUT on two RRUs or two SRXUs respectively.

RF Jumper Connections of the RRUOne end of the RF jumper is connected to the RF ports on the RRU and the other end to thefeeder. Which RF port to use depends on the networking modes.

Table 2-11 describes the connections of the RF jumpers in different RRU networking modes.

Table 2-11 RF jumper connections of the RRU

TypicalNetworkingMode

Antenna Type andQuantity of RRUs

Cable Connection

1 x 1 in no TXdiversity mode

l One RRUl One dual polarization

antenna

l Two antenna jumpersl The DIN connectors of the two feeder

jumpers link to the ANT_TX/RXA andANT_RXB ports at the bottom of theRRU.



l Two RRUsl Two dual polarization

antennas

l Four antenna jumpersl The DIN connectors of the four

antenna jumpers are linked to theANT_TX/RXA ports and ANT_RXBports on RRU 0 and RRU 1.


1 x 1 in TX diversitymode

l Two RRUsl One dual polarization

antenna

l Two feeder jumpers and oneinterconnect jumper

l The DIN connectors of the two feederjumpers are linked to the ANT_TX/RXA ports on RRU 0 and RRU 1.

l The interconnect jumper is connectedto the RX_IN/OUT ports on RRU 0 andRRU 1 that are combined.



l Three RRUsl Three dual polarization

antennas

l Six antenna jumpersl The DIN connectors of the six antenna

jumpers are linked to the ANT_TX/RXA ports and ANT_RXB ports onRRU 0, RRU 1, and RRU 2.




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Cable Connection

4-way RX diversity l One RRU

l One SRXU

l Two antenna jumpers and one DCpower cable

l The DIN connectors of the two antennajumpers are linked to the ANT_RXCand ANT_RXD ports at the bottom ofthe SRXU.

l One end of the DC power cable isconnected to the RET/PWR_SRXUport at the bottom of the RRU, and theother end is connected to thePWR_SRXU socket at the bottom ofthe SRXU.

2.3.7 Alarm Cable of the RRUThe cable transmits the 2-channel Boolean alarm signals and 1-channel RS485 signals fromexternal devices to the RRU. Thus, the external signals are monitored.

AppearanceThe cable has a DB15 male connector at one end and eight cord end terminals at the other end,as shown in Figure 2-13.

NOTE

If the cord end terminals of the cable do no match the ports on the external devices, cut off the cord endterminals and make proper terminals on site.

Figure 2-13 Alarm cable

Pin AssignmentThe cable can transmit 2-channel Boolean alarm signals and 1-channel RS485 signals. Table2-12 describes the pin assignment for the wires of the alarm cable.


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Table 2-12 Pin assignment for the wires of the alarm cable

X1 End Cord EndTerminal

Wire Color Wire Type Label

X1.2 X2 White andblue

Twisted pair SWITCH_INPUT0+

X1.3 X3 Blue GND

X1.6 X4 White andorange

Twisted pair SWITCH_INPUT1+

X1.7 X5 Orange GND

X1.10 X6 White andgreen

Twisted pair RS485_TX-

X1.11 X7 Green RS485_TX+

X1.13 X8 White andbrown

Twisted pair RS485_RX-

X1.14 X9 Brown RS485_RX+

Installation PositionThe DB15 male connector is linked to the RS485/EXT_ALM port on the cabling cavity of theRRU, and the other end of the cable is connected to the ports for Boolean alarm signals on theexternal device.

2.4 SRXU CablesThe SRXU cables include the PGND cable, power cable, AISG multi-wire cable, AISGextension cable, CPRI optical cable, and RF jumper.

2.4.1 PGND Cable of the SRXUThe PGND cable ensures the grounding of the SRXU.

2.4.2 Power Cable of the SRXUThe SRXU uses a shielded DC power cable. The cable feeds power from the RRU to the SRXU.






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2.4.1 PGND Cable of the SRXUThe PGND cable ensures the grounding of the SRXU.

Appearance

The green and yellow PGND cable is a single cable with a cross-sectional area of 16 mm2. Bothends of the cable are OT terminals.

Figure 2-14 shows the PGND cable.

Figure 2-14 PGND cable

OT terminals need to be added on site. You can determine the color of the cable and whether touse 2-hole terminals according to local standards.

Figure 2-15 shows the 2-hole terminal.

Figure 2-15 2-hole terminal


One end of the PGND cable is connected to the grounding bolt on the SRXU, and the other endis connected to the grounding bolt on the RRU.

2.4.2 Power Cable of the SRXUThe SRXU uses a shielded DC power cable. The cable feeds power from the RRU to the SRXU.

Appearance

The cable has a waterproof DB9 connector at each end, as shown in Figure 2-16.

Figure 2-16 DC power cable


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Pin Assignment

Table 2-13 describes the pin assignment for the wires of the DC power cable.

Table 2-13 Pin assignment for the wires of the DC power cable


X1.6 X2.6 White and blue Twisted pair DC PowerCable

Blue

X1.7 X2.7 White andorange

Twisted pair GND

Orange


One end of the DC power cable is connected to the RET/PWR_SRXU port at the bottom of theRRU, and the other end is connected to the PWR_SRXU socket at the bottom of the SRXU.


Appearance

The cable has a waterproof DB9 connector at one end and a standard AISG female connector atthe other end, as shown in Figure 2-17.

Figure 2-17 AISG multi-wire cable

Pin Assignment

Table 2-14 describes the pin assignment for the wires of the AISG multi-wire cable.



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Table 2-14 Pin assignment for the wires of the AISG multi-wire cable

X1 End X2 End Wire Type Remarks

X1.1 X2.1 Twisted pair +12 V

X1.7 X2.7 Twisted pair DC-GND

X1.9 AISG_Switch

X1.3 X2.3 Twisted pair RS485 -

X1.5 X2.5 RS485 +

Installation PositionIf only the RRU is installed, the waterproof DB9 connector is linked to the RET/PWR_SRXUport at the bottom of the RRU, and the standard AISG female connector is linked to thecorresponding connector on the RCU or to the AISG extension cable.

If both the RRU and the SRXU are installed, the waterproof DB9 connector is linked to the RETport at the bottom of the SRXU, and the standard AISG female connector is linked to thecorresponding connector on the RCU or to the AISG extension cable.


AppearanceThe cable has a standard AISG male connector at one end and a standard AISG female connectorat the other end, as shown in Figure 2-18.

Figure 2-18 AISG extension cable

Pin AssignmentTable 2-15 describes the pin assignment for the wires of the AISG extension cable.


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Table 2-15 Pin assignment for the wires of the AISG extension cable


X1.1 X2.1 White and blue Twisted pair +12 V

Blue

X1.7 X2.7 White and orange Twisted pair DC Return A

Orange

X1.3 X2.3 White and green Twisted pair RS485 B

X1.5 X2.5 Green RS485 A

X1.6 X2.6 White and brown Twisted pair +24 V

Brown


The AISG female connector is linked to the corresponding connector on the RCU, and the AISGmale connector is linked to the AISG female connector of the AISG multi-wire cable.


Appearance

The CPRI optical cable is a multi-mode 2-wire cable with DLC connectors at both ends. Figure2-19 shows the CPRI optical cable.

Figure 2-19 CPRI optical cable

(1) DLC connector (2) Label on the fiber tail

(3) Fiber tail

Pin Assignment

Table 2-16 describes the pin assignment for the fiber tails of the CPRI optical cable.



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Table 2-16 Pin assignment for the fiber tails of the CPRI optical cable

Label Color Connect to...

1A Orange RX port on the RRU

1B Gray TX port on the RRU

2A Orange TX port on the WBBPa

2B Gray RX port on the WBBPa

Installation PositionTable 2-17 describes the installation positions of the CPRI optical cable.

Table 2-17 Installation positions of the CPRI optical cable

One End The Other End

CPRI port on the WBBPa CPRI_W port on the RRU


2.4.6.1 Antenna Jumper of the RRU/SRXUThe antenna jumper transmits and receives RF signals.

2.4.6.2 Interconnect Jumper of the RRU/SRXUThe interconnect jumper transmits RF signals between two RRUs or two SRXUs.

2.4.6.3 RF Jumper Connections of the RRUOne end of the RF jumper is connected to the RF ports on the RRU and the other end to thefeeder. Which RF port to use depends on the networking modes.

Antenna Jumper of the RRU/SRXUThe antenna jumper transmits and receives RF signals.

AppearanceThe antenna jumper has a DIN male connector at each end, as shown in Figure 2-20.

Figure 2-20 Feeder jumper


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Installation PositionThe antenna jumper with indefinite length is selected according to the distance between theantenna and the RRU/SRXU. Connectors are made on site.l When the distance between the antenna and the RRU/SRXU is shorter than 14 m, the RRU/

SRXU is directly connected to the antenna through the antenna jumper.l When the distance between the antenna and the RRU/SRXU is longer than 14 m, the antenna

jumper should be shorter than 2 m. If you prepare the jumper by yourself, it is recommendedthat the feeder jumper be 2 m long at most. Ensure that the antenna jumper is connected tothe feeder before being connected to the RRU/SRXU and the antenna.

Interconnect Jumper of the RRU/SRXUThe interconnect jumper transmits RF signals between two RRUs or two SRXUs.

AppearanceThe interconnect jumper is 2 m long and it has a 2W2 connector at each end, as shown in Figure2-21.

Figure 2-21 Interconnect jumper

Installation PositionThe 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeledRX_IN/OUT on two RRUs or two SRXUs respectively.

RF Jumper Connections of the RRUOne end of the RF jumper is connected to the RF ports on the RRU and the other end to thefeeder. Which RF port to use depends on the networking modes.

Table 2-18 describes the connections of the RF jumpers in different RRU networking modes.

Table 2-18 RF jumper connections of the RRU



Cable Connection


l One RRUl One dual polarization

antenna

l Two antenna jumpersl The DIN connectors of the two feeder

jumpers link to the ANT_TX/RXA andANT_RXB ports at the bottom of theRRU.




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Cable Connection


l Two RRUsl Two dual polarization

antennas

l Four antenna jumpersl The DIN connectors of the four

antenna jumpers are linked to theANT_TX/RXA ports and ANT_RXBports on RRU 0 and RRU 1.



l Two RRUsl One dual polarization

antenna

l Two feeder jumpers and oneinterconnect jumper

l The DIN connectors of the two feederjumpers are linked to the ANT_TX/RXA ports on RRU 0 and RRU 1.

l The interconnect jumper is connectedto the RX_IN/OUT ports on RRU 0 andRRU 1 that are combined.



l Three RRUsl Three dual polarization

antennas

l Six antenna jumpersl The DIN connectors of the six antenna

jumpers are linked to the ANT_TX/RXA ports and ANT_RXB ports onRRU 0, RRU 1, and RRU 2.


4-way RX diversity l One RRU

l One SRXU

l Two antenna jumpers and one DCpower cable

l The DIN connectors of the two antennajumpers are linked to the ANT_RXCand ANT_RXD ports at the bottom ofthe SRXU.

l One end of the DC power cable isconnected to the RET/PWR_SRXUport at the bottom of the RRU, and theother end is connected to thePWR_SRXU socket at the bottom ofthe SRXU.


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3 Installing RRU and SRXU Hardware

About This Chapter

This describes how to install the hardware, route the cables, and check the hardware installationof the RRU and SRXU.

3.1 Information About the InstallationThis describes the installation modes and space requirements of the RRU and SRXU.

3.2 Procedure for Installing the RRU and SRXUThe procedure for installing the RRU and SRXU varies with the installation scenarios. Theprocedure involves making preparations, installing the RRU and SRXU, connecting relatedcables, checking the hardware installation, and installing the housing of the RRU and SRXU.

3.3 Preparing for the NodeB InstallationThis describes how to prepare for the NodeB installation. Before installing the NodeB, you needto unpack the NodeB and prepare necessary tools.

3.4 Installing the RRU on the Ground or RooftopWhen the RRU needs to be installed on the ground or rooftop, it supports one-module, two-module centralized, and three-module centralized installation modes.

3.5 Installing the RRU on the TowerBefore installing the RRU on the tower, you need to assemble the parts and then lift them up tothe tower.

3.6 Installing the SRXUThis describes how to install the SRXU on the RRU in one-module, two-module centralized, orthree-module centralized installation mode.

3.7 Installing RRU and SRXU CablesThis describes how to install the cables of the RRU and SRXU and how to open and close thecover plate of the RRU or SRXU cabling cavity.

3.8 Powering On the RRU/SRXUThis describes how to power on the RRU/SRXU. The RRU, supplied with -48 V DC power,feeds power to the SRXU through a power cable. During power-on, you need to check the statusof the LEDs on the RRU/SRXU.

3.9 Installing the Housing of the RRU and SRXU

RRUUser Guide 3 Installing RRU and SRXU Hardware


3-1

After the SRXU is fixed to the RRU, install the housing after checking the hardware installation.

3.10 Checklists for Hardware Installation of Distributed NodeBs and Mini NodeBsThis describes the checklists for hardware installation and cable connections.

3 Installing RRU and SRXU HardwareRRU

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3.1 Information About the InstallationThis describes the installation modes and space requirements of the RRU and SRXU.

3.1.1 Installation Modes of the RRU and SRXUThe RRU supports one-module, two-module centralized, and three-module centralizedinstallation modes. It can be mounted on a metal pole or wall. If an SRXU is configured, theSRXU must be fixed to the RRU.

3.1.2 Space Requirements of the RRU and SRXUIn different installation modes, the RRU and SRXU have the minimal space requirements forcabling and OM. Based on the engineering practice, Huawei offers the recommended spacerequirements.

3.1.3 Cabling Specifications for the NodeBThis describes the cabling specifications for the power cables and PGND cables. The powercables and signal cables must be routed in compliance with the cabling specifications to avoidelectromagnetic interference to the signals.

3.1.4 Requirements for the RRU Cabling on a TowerThis describes the requirements for the RRU cabling on a tower. Routing RRU cables on a towershould meet certain requirements to prevent damages to the cables or prevent interference to thesignals.

3.1.5 Connections of RRU and SRXU CablesThis describes the cable connections between the RRU, SRXU, and other devices such asBBU3806, external power supply, and antenna system.

3.1.6 Labels for DBS3900 CablesThis presents the types, appearance, and installation of the labels for DBS3900 cables. The labelsare attached to the power cable of the BBU, power cable of the RRU, E1 cable, CPRI opticalcable, and alarm cable.

3.1.1 Installation Modes of the RRU and SRXUThe RRU supports one-module, two-module centralized, and three-module centralizedinstallation modes. It can be mounted on a metal pole or wall. If an SRXU is configured, theSRXU must be fixed to the RRU.

NOTE

The metal pole or the wall on which the RRU is mounted must meet the following requirements:

l The depth of the metal ranges from 30 mm to 40 mm and the outer diameter of the pole ranges from60 mm to 114 mm.

l The wall is made of the concrete and the minimum weight bearing capacity of the wall is 100 kg.

Installation Modes of One RRUFigure 3-1 shows the installation modes of one RRU.



3-3

Figure 3-1 Installation modes of one RRU

Installation Modes of One RRU and One SRXUFigure 3-2 shows the installation modes of one RRU and one SRXU.

Figure 3-2 Installation modes of one RRU and one SRXU

Installation Modes of Two RRUsFigure 3-3 shows the installation modes of two RRUs.


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Figure 3-3 Installation modes of two RRUs

Installation Modes of Two RRUs and Two SRXUsFigure 3-4 shows the installation modes of two RRUs and two SRXUs.

Figure 3-4 Installation modes of two RRUs and two SRXUs

Installation Modes of Three RRUsFigure 3-5 shows the installation modes of three RRUs.



3-5

Figure 3-5 Installation modes of three RRUs

Installation Modes of Three RRUs and Three SRXUsFigure 3-6 shows the installation modes of three RRUs and three SRXUs.


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Figure 3-6 Installation modes of three RRUs and three SRXUs

NOTEThe RRU can be also installed in an indoor centralized rack. For details about how to install the RRU inthe indoor centralized rack, refer to Indoor Centralized Installation Guide.

3.1.2 Space Requirements of the RRU and SRXUIn different installation modes, the RRU and SRXU have the minimal space requirements forcabling and OM. Based on the engineering practice, Huawei offers the recommended spacerequirements.

NOTE

The following figures related to the space requirements assume that the cabling cavities are on the left sideof the RRU and SRXU. If the RRU and SRXU are installed with the cabling cavities on the right, thehorizontal space requirements are opposite to what are shown in the figures.

Space Requirements of One RRU with and Without the SRXUFigure 3-7 shows the recommended space requirements of one RRU with and without theSRXU.



3-7

Figure 3-7 Recommended space requirements of one RRU with and without the SRXU (unit:mm)

The recommended space around the equipment is as follows:

l At least 500 mm under the equipment for cabling. It is recommended that the space be1,200 mm between the bottom and the ground for easy maintenance.

l At least 800 mm in front of the equipment for maintenance.

l At least 200 mm above the equipment for maintenance.

l At least 600 mm on the left of the equipment for maintenance.

l At least 300 mm on the right of the equipment for maintenance.

l Regardless of whether the SRXU is fixed to the RRU, the space requirements are the same.

Figure 3-8 shows the minimal space requirements of one RRU with and without the SRXU.


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Figure 3-8 Minimal space requirements of one RRU with and without the SRXU (unit: mm)

The minimal space around the equipment is as follows:

l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mmbetween the equipment bottom and the ground for easy maintenance.

l 600 mm in front of the equipment for maintenance.l 200 mm above the equipment for maintenance.l 400 mm on the left of the equipment for maintenance.l 100 mm on the right of the equipment for maintenance.

When two RRUs need to be combined, space requirements of each RRU must be met. In addition,the space between the two RRUs should stay within the range shown in Figure 3-9.

Figure 3-9 Space requirements of two combined RRUs (unit: mm)

The space between the two RRUs is as follows:



3-9

l When two RRUs are installed horizontally, the space is 1,200 mm at most.

l When two RRUs are installed vertically, the space is 800 mm at most.

NOTE

The space requirements of two combined SRXUs are the same as those of two combined RRUs.

Space Requirements of Multiple RRUs with and Without the SRXUs

Figure 3-10 shows the recommended space requirements of multiple RRUs with and withoutthe SRXUs.

Figure 3-10 Recommended space requirements of multiple RRUs with and without the SRXUs(unit: mm)

The recommended space around the equipment is as follows:

l At least 500 mm under the equipment for cabling. It is recommended that the space be1,200 mm between the bottom and the ground for easy maintenance.

l At least 800 mm in front of the equipment for maintenance.

l At least 200 mm above the equipment for maintenance.

l At least 800 mm on the left of the equipment for maintenance.

l At least 800 mm on the right of the equipment for maintenance.

l Regardless of whether the SRXUs are fixed to the RRU, the space requirements are thesame.

l Regardless of whether the RRUs are in two-module or three-module centralized installationmode, the space requirements are the same.

Figure 3-11 shows the minimal space requirements of multiple RRUs with and without theSRXUs.


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Figure 3-11 Minimal space requirements of multiple RRUs with and without the SRXUs (unit:mm)

The minimal space around the equipment is as follows:

l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mmbetween the equipment bottom and the ground for easy maintenance.

l 600 mm in front of the equipment for maintenance.

l 200 mm above the equipment for maintenance.

l 600 mm on the left of the equipment for maintenance.

l 600 mm on the right of the equipment for maintenance.

3.1.3 Cabling Specifications for the NodeBThis describes the cabling specifications for the power cables and PGND cables. The powercables and signal cables must be routed in compliance with the cabling specifications to avoidelectromagnetic interference to the signals.

Requirements for Bending Radius of the Cables

Cable Requirements for theBending Radius

Feeder 1/2" feeder ≥ 127 mm

7/8" feeder ≥ 250 mm

5/4" feeder ≥ 380 mm

13/8" feeder ≥ 510 mm

Jumper 1/4" jumper ≥ 35 mm



3-11

Cable Requirements for theBending Radius

1/2" jumper ≥ 50 mm

Single-jacket cable 2.5 mm ≤ D ≤ 4.5 mm R ≥ 2D

D ≥ 4.5 mm R ≥ 3D

Two-wire or multi-wirecables with/withoutshielding layers

6.5 mm ≤ D ≤ 12.5 mm R ≥ 2D

D ≥ 12.5 mm R ≥ 3D

Optical cable R ≥ 20D

NOTE

In the preceding table, D refers to the diameter of the cable jacket and R refers to the bending radius of thecable.

Requirements for Binding Cablesl Cables of different types are bound separately. The cables cannot be coiled.

l The cables are tightly and neatly bundled. Ensure that the jackets of the cables are notdamaged.

l Two adjacent cable ties are spaced 200 mm and face the same direction. The cable ties atthe same position are placed at the same level. All cuts of the cable ties are smooth withoutsharp projections.

l Attach labels or nameplates to both ends of the cables after they are installed.

General Cabling Specificationsl Cables of different types are routed separately.

l Cables of different types are not crossed.

l The space between cables of different types are greater than 30 mm when the cables arerouted parallel inside the cabinet. The space between cables of different types are greaterthan 100 mm when the cables are routed parallel outside the cabinet. If such requirementscannot be met, If such requirements cannot be met, the cables must be separated withspecified objects.

Cabling Specifications for Power Cables and PGND Cablesl The optical cables are routed in compliance with the engineering design and general cabling

specifications.

l If the cable is not long enough, replace the cable. Do not add connectors or solder joints tolengthen the cable.

l The cables are insulated if they are bound to and routed on the metal cable rack.

l Fuses or switches are not allowed on the cables.

l The -48 V power cable and the GND cable are bound together.


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l Both ends of the PGND cables are anti-corrosive and antirust. Connections of the PGNDcables are secure.

l The low-voltage AC power cable for the NodeB is covered with a metallic conduit andburied in the ground for at least 50 m before they are led into the equipment room. Notethat if such cables are shorter than 50 m, they must be completely buried in the ground. Ifsuch cables are routed overhead and led into the room, surge protection for the connectorsof the AC power cables are affected.

l The PGND cables are buried in the ground or routed indoors. The PGND cables cannot berouted overhead before they are led into the equipment room.

Cabling Specifications for E1/T1 Cablesl The optical cables are routed in compliance with the engineering design and general cabling

specifications.

l The E1/T1 cables cannot be routed overhead outdoors.

l If the E1/T1 cables are routed outdoors, coat the E1/T1 cables with PVC jackets and routethem underground based on the site conditions.

l If the E1/T1 cables routed outdoors are longer than 5 m, a surge protection box is required.

l The proper cable surpluses are reserved when the E1/T1 cables are curved.

l The idle wires of the E1/T1 cables are grounded properly in the equipment room.

Cabling Specifications for Optical Cablesl The optical cables are routed in compliance with the engineering design and general cabling

specifications.

l Reserve proper cable surpluses where the optical cables are curved.

l Do not stretch, step, or place heavy objects on the optical cables. Keep the cables awayfrom sharp objects to avoid damage. The optical cable that is curved or pressed or the opticalconnector which is damaged cannot be used.

l Extra optical cables are coiled on the specific device such as the fiber coiler. Coil extraoptical cables properly. Do not bend the cables forcibly to avoid damaging the cables.

l Use protection tubes to coat the bare fibers.

l The idle connectors of the optical cables are covered with dustproof caps.

l If one end of the optical cable is connected to an optical device, do not look directly at theend face of the optical connector. Otherwise, you may damage your eyes.

l Fill soft materials such as fireproof cottons in the optical cable inlets at the top of the cabinetto protect the optical cables.

l You need to check whether the optical connectors are clean before installation. If the opticalconnectors are dirty, clean them by using the dustfree cloth or fiber cleaner.

3.1.4 Requirements for the RRU Cabling on a TowerThis describes the requirements for the RRU cabling on a tower. Routing RRU cables on a towershould meet certain requirements to prevent damages to the cables or prevent interference to thesignals.



3-13

Scenario of RRU Cabling on a TowerIn RRU installation scenarios, if you choose to install the RRU on the mast of a tower, you needto route the RRU cables on the tower. Figure 3-12 shows the installation scenario.

Figure 3-12 Scenario of RRU cabling on a tower

In this scenario, you should install the following cables on the tower:

l CPRI optical cable between the BBU and the RRU.

l RRU power cable.

Requirements for Routing Cables Through the Cable Hole at the Bottom of theCabinet

Routing RRU cables through the cable hole at the bottom of the cabinet should meet the followingrequirements:l If you route the cable through the cable hole at the bottom of the cabinet, coat the cable

with the PVC protection tube, as shown in Figure 3-13.


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Figure 3-13 PVC protection tube

l If you route the cable coated with the protection tube on the ground or in the cable trough,do not step on or crush the cable.

Requirements for Routing Cables in the Cable RackRouting RRU cables in the cable rack should meet the following requirements:

l Use the cable clip to fasten the cables.

l Route the cables in a planned way. Do not let the cables occupy too much space.

l The cables should be put in order according to the routing direction, and then should befastened using the cable clips.

l Determine the installation points of the clips according to the field requirements. Usuallythe distance between two clips should be less than or equal to 1.5 m. Install the clips witheven spacing and in the same direction.

l The clip should be vertical to the cables and should not be bent. The cables fastened by thesame clip should be parallel, as shown in Figure 3-14.



3-15

Figure 3-14 Installing the cable clip

l Do not fasten the screws on the clip until the cables are properly arranged and routed.

Figure 3-15 shows routing the cables in the cable rack.


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Figure 3-15 Routing the cables in the cable rack

Requirements for Routing Cables on the TowerRouting RRU cables on the tower should meet the following requirements:

l Use the cable clip to fasten the cables.

l Route the cables in a planned way. Do not let the cables occupy too much space.

l Arrange the cables in order from top down to ensure that the cables are not twisted or tangledwith other cables. Then use clips to fasten the cables.

l Determine the installation points of the clips according to the field requirements. Usuallythe distance between two clips should be less than or equal to 1.5 m. Install the clips witheven spacing and in the same direction.



3-17

l The clip should be vertical to the cables and should not be bent. The cables fastened by thesame clip should be parallel, as shown in Figure 3-16.

l Figure 3-16 Installing the cable clip on the tower

l Do not fasten the screws on the clip until the cables are properly arranged and routed.

Figure 3-17 shows routing the cables in the cable rack.


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Figure 3-17 Routing the cables in the cable rack

3.1.5 Connections of RRU and SRXU CablesThis describes the cable connections between the RRU, SRXU, and other devices such asBBU3806, external power supply, and antenna system.

Cable Connections of One RRU with and Without the SRXUFigure 3-18 and Figure 3-19 show the cable connections of one RRU with and without theSRXU.



3-19

Figure 3-18 Cable connections of one RRU without the SRXU

NOTE

l When one RRU is installed, the PGND cable is connected to the grounding bolt on the RRU module.

l The AISG multi-wire cable connects the RRU to the RCU. When the distance between the RRU andthe RCU is too long, the AISG extension cable is used between the AISG multi-wire cable and theRCU.

l The antenna jumper directly connects the RRU to the antenna. When the distance between the RRUand the antenna is longer than 14 m, the feeder is required.


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Figure 3-19 Cable connections of one RRU with the SRXU

NOTE

Interconnect jumper is used to implement the interconnection between combined RRUs or betweencombined SRXUs. The interconnection between the RRU and the SRXU, however, cannot be implemented.

Cable Connections of Multiple RRUs with and Without the SRXUsFigure 3-20 and Figure 3-21 show the cable connections of multiple RRUs with and withoutthe SRXUs.



3-21

Figure 3-20 Cable connections of multiple RRUs without the SRXUs

NOTE

l The interconnect jumper connects two RRUs and implements the networking in TX diversity mode.

Figure 3-21 Cable connections of multiple RRUs with the SRXUs

NOTE

Interconnect jumper is used to implement the interconnection between combined RRUs or betweencombined SRXUs. The interconnection between the RRU and the SRXU, however, cannot be implemented.


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3.1.6 Labels for DBS3900 CablesThis presents the types, appearance, and installation of the labels for DBS3900 cables. The labelsare attached to the power cable of the BBU, power cable of the RRU, E1 cable, CPRI opticalcable, and alarm cable.

Labels for the Cablesl Label for the BBU power cable

Quantity of delivered labels: quantity of BBU power cables x 2Installation positions of the labels: 3 cm away from each end of the power cableSame labels are attached to both ends of the power cable. X ranges from 0 to 3, indicatingBBU0 through BBU3, as shown in Figure 3-22.

Figure 3-22 Label for the BBU power cable (unit: mm)

l Label for the RRU power cableQuantity of delivered labels: quantity of RRU power cables x 2Installation positions of the labels: 3 cm away from each end of the power cableSame labels are attached to both ends of the power cable. X ranges from 0 to 5, indicatingRRU0 through RRU5, as shown in Figure 3-23.

Figure 3-23 Label for the RRU power cable (unit: mm)

l Label for the E1 cableQuantity of delivered labels: quantity of E1 cables x 2Installation positions of the labels: 3 cm away from each end of the E1 cable



3-23

Same labels are attached to both ends of the E1 cable. X ranges from 0 to 3, indicating Iub0through Iub3, as shown in Figure 3-24.

Figure 3-24 Label for the E1 cable (unit: mm)

l Label for the CPRI optical cableQuantity of delivered labels: quantity of CPRI optical cables x 2Installation positions of the labels: 3 cm away from each end of the CPRI optical cableSame labels are attached to both ends of the CPRI optical cable. X ranges from 0 to 5,indicating the optical ports on the BBU and RRU, as shown in Figure 3-25.

Figure 3-25 Label for the CPRI optical cable (unit: mm)

l Label for the alarm cableQuantity of delivered labels: quantity of RRU alarm cables x 2Installation positions of the labels: near the cable hole where the RRU alarm cable is routedout of the cabling cavityA label is attached near the cable hole where the RRU alarm cable is routed out of thecabling cavity. X ranges from 0 to 5, indicating RRU0 through RRU5, as shown in Figure3-26.


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Figure 3-26 Label for the RRU alarm cable (unit: mm)

Quantity of delivered labels: quantity of BBU alarm cables x 2

Installation positions of the labels: 3 cm away from each end of the alarm cable

A label is attached near the cable hole where the BBU alarm cable is routed out of thecabling cavity. X ranges from 0 to 5, indicating BBU0 through BBU5, as shown in Figure3-27.

Figure 3-27 Label for the BBU alarm cable (unit: mm)

Attaching a Label to a Cable1. Lead a cable tie through each pair of holes in the label, as shown in Figure 3-28. The cable

ties should be led in the same direction for better appearance.

Figure 3-28 Leading cable ties through the holes



3-25

(1) Cable tie (2) Label (3) Cable

2. Bind the label to the cable, as shown in Figure 3-29. Cut off the surplus part of each cabletie.

Figure 3-29 Binding the label to the cable

(1) Cable tie (2) Cable (3) Label

NOTE

Ensure that the labels are arranged in an orderly and neat manner and the cable ties are installed inthe same direction. An extra length ranging from 3 mm to 5 mm should be left for each cable tie.

3.2 Procedure for Installing the RRU and SRXUThe procedure for installing the RRU and SRXU varies with the installation scenarios. Theprocedure involves making preparations, installing the RRU and SRXU, connecting relatedcables, checking the hardware installation, and installing the housing of the RRU and SRXU.

Context

CAUTIONAfter the NodeB is installed, it must be powered on within 48 hours.

NOTE

Contact Huawei engineers for confirmation if:

l You choose to prepare the devices, cables, and connectors by yourself.

l You need to shorten the cable of a specified length.

Procedure

Step 1 Unpack the RRU and SRXU, check the items in the package, and prepare tools and instruments.

Step 2 Install the RRU. The installation mode of the RRU varies with the installation scenarios.


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l 3.4 Installing the RRU on the Ground or Rooftop

If... Then...

Only one RRU needs to be installed, Go to 3.4.1 Installing a Single RRU.

Two RRUs need to be installed, Go to 3.4.2 Installing Two RRUs.

Three RRUs need to be installed, Go to 3.4.3 Installing Three RRUs.

l 3.5 Installing the RRU on the Tower

Step 3 Check whether the SRXU needs to be installed. Perform the next step accordingly.

If... Then...

The SRXU needs to be installed, Go to Step 4.

The SRXU does not need to be installed, Go to Step 5.

Step 4 Install the SRXU. For details, refer to 3.6 Installing the SRXU.

Step 5 Install RRU and SRXU cables. For details, refer to 3.7 Installing RRU and SRXU Cables.

Step 6 Check RRU and SRXU hardware installation. For details, refer to Checking RRU and SRXUHardware Installation.

Step 7 Install the housing of the RRU and SRXU. For details, refer to 3.9 Installing the Housing ofthe RRU and SRXU.

----End

3.3 Preparing for the NodeB InstallationThis describes how to prepare for the NodeB installation. Before installing the NodeB, you needto unpack the NodeB and prepare necessary tools.

3.3.1 Unpacking Inspection for the NodeBThis describes how to unpack the NodeB and check the integrity of the equipment. This is aprerequisite for the successful installation.

3.3.2 Tools and Instruments for NodeB InstallationThis describes the general tools, special tools, and instruments required for the NodeBinstallation.

3.3.1 Unpacking Inspection for the NodeBThis describes how to unpack the NodeB and check the integrity of the equipment. This is aprerequisite for the successful installation.



3-27

Context

CAUTIONWhen transporting, moving or installing the equipment, components, or parts, you must:l Avoid collision with doors, walls, shelves, and other objects.

l Avoid touching the uncoated metal surface of the equipment, components, or parts with sweatsoaked or dirty gloves.

Procedure

Step 1 Check the models and the quantity of components inside the packing case according to thepacking list.

If… Then…

The quantity matches with the packing list, Go to Step 2.

The quantity does not match with thepacking list,

Find out the cause and contact the localHuawei office.

Step 2 Check whether the packing case is in good condition.

If… Then…

The packing case is in good condition, Go to Step 3.

The packing case is damaged or soaked, Find out the cause and contact the local Huaweioffice.

Step 3 Open the packing case. Check the shipped components according to the Packing List, and thenperform the next step according to the checking result.

If… Then…

The shipped components match with the packinglist,

Sign the packing list with the customer.

There is any short shipment, wrong shipment, ordamage to the goods,

Fill in the Cargo Problems Report.


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CAUTIONTo protect the equipment and find out the cause in the case of goods damage, you must

l Store the unpacked equipment and packing materials indoors.

l Take photos of the storage environment, rusted or corroded devices, and packing cases andmaterials, and then file the photos.

----End

3.3.2 Tools and Instruments for NodeB InstallationThis describes the general tools, special tools, and instruments required for the NodeBinstallation.

Table 3-1 lists the tools and instruments that need to be prepared before installation.

Table 3-1 Tools and instruments

General tools Measuringtools

Long tape, 50 mm ribbon tape, 5 m measuring tape, 400mm level bar, and level instrument

Markingtools

Marking pen and pencil

Drilling tools Percussion drill (with the Ф6, Ф8, Ф10, Ф12, Ф14, andФ16 bits) and vacuum cleaner

Clampingtools

Straight screwdrivers (M3-M6)Cross screwdrivers (M3-M6)Adjustable wrenchSocket wrenches (M6, M8, M12, M14, M17, and M19)Double offset ring wrenches (M6, M8, M12, M14, M17,and M19)Combination wrench M17 and M19Long-arm wrench

Pliers Sharp-nose pliers, diagonal pliers, pincer pliers, hand-held electric drill, file, handsaw, crowbar, rubberhammer, and claw hammer

Auxiliarytools

Brush, tweezers, paper knife, bellows, plumb, solderingiron, solder wires, fork, ladder, heat blower, solderabsorber, insulating tape, and USB memory

Special tools Earth resistance tester, ESD wrist strap, a pair of ESD gloves, wirestripper, a clamping pincers, feeder cutter, a pair of crimping pliers forSMB, RJ-45 connector crimping pliers, wire punchdown tool, wire cutter,non-conductive screwdriver, safety knife, stripper for 75-ohm coaxialcables, a pair of connector crimping pliers for 75-ohm coaxial cables, anda pair of multi-purpose crimping pliers



3-29

Instruments Multimeter, 500 V megohmmeter (for testing insulation resistance), BERtester, and optical power meter

NOTE

The instruments must be checked and certified before put into use.

3.4 Installing the RRU on the Ground or RooftopWhen the RRU needs to be installed on the ground or rooftop, it supports one-module, two-module centralized, and three-module centralized installation modes.

3.4.1 Installing a Single RRUThis describes how to install a single RRU module and its mounting plate. The single RRU canbe installed on a metal pole or wall.

3.4.1 Installing a Single RRUThis describes how to install a single RRU module and its mounting plate. The single RRU canbe installed on a metal pole or wall.

Procedure

Step 1 Install the mounting plate of the RRU. The operation varies with the installation mode.

If... Then...

The RRU needs to be installed on a metalpole,

Go to 3.4.1.1 Installing the Mounting Plateof the Single RRU on the Metal Pole.

The RRU needs to be installed on a wall, Go to 3.4.1.2 Installing the Mounting Plateof the Single RRU on the Wall.

Step 2 Perform the operations in 3.4.1.3 Installing the Single RRU Module.

----End

Installing the Mounting Plate of the Single RRU on the Metal PoleThis describes how to install the mounting plate on the metal pole.

PrerequisiteThe metal pole is ready and the pole diameter is between 60 mm and 114 mm.

Procedure

Step 1 Determine the position of the mounting plate by referring to the engineering design and 3.1.2Space Requirements of the RRU and SRXU.


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NOTE

It is recommended that the upper fixture assembly be 1,200 mm to 1,600 mm above the ground.

Step 2 Mount the upper fixture assembly on the metal pole. Ensure that the four ends of the fixtureassembly are on the same plane, as shown in Figure 3-30.

Figure 3-30 Mounting the upper fixture assembly

NOTE

Two pairs of holes can be used for mounting the fixture assembly, as shown in Figure 3-31. If the 60-95mm bolts are used, use pair 1. If the 90-114 mm bolts are used, use pair 2.

Figure 3-31 Holes in the fixture assembly

Step 3 Use the level bar to check whether the four ends of the fixture assembly are on the same plane.Use the tape to measure the distance and check whether the two pole fixtures are parallel.

NOTE

If the difference between L1 and L2, as shown in Figure 3-32, is beyond ±1 mm, the two pole fixtures arenot parallel.



3-31

Figure 3-32 Measuring L1 and L2

If... Then...

The pole fixtures are neither horizontal norparallel,

Go to Step 2 to adjust the fixture assembly.

The pole fixtures are horizontal and parallel, Go to Step 4.

Step 4 Use the holes numbered 1 in Figure 3-33.

Figure 3-33 Holes in the multi-purpose attachment plate

Step 5 Use three screws M6 x 20 to secure the multi-purpose attachment plate to the mounting plate,as shown in Figure 3-34.


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Figure 3-34 Securing the multi-purpose attachment plate to the mounting plate

Step 6 Install the third pole fixture on the mounting plate at the lower part of its back by tightening twobolts M10 x 40, as shown in Figure 3-35.

Figure 3-35 Installing the third pole fixture

Step 7 Install the mounting plate by fitting the tabs on the mounting plate into the anchor slots in thepole fixture, as shown in Figure 3-36.



3-33

Figure 3-36 Installing the mounting plate

Step 8 Mount the fourth pole fixture to the metal pole by tightening two bolts M10 x 110 between thethird and the fourth pole fixtures, as shown in Figure 3-37.


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Figure 3-37 Mounting the lower fixture assembly

NOTE


----End

Installing the Mounting Plate of the Single RRU on the WallThis describes how to install the mounting plate on the wall.

Procedure

Step 1 Determine the position of the mounting plate.1. Determine the position of the mounting plate by referring to the engineering design and

3.1.2 Space Requirements of the RRU and SRXU. Figure 3-38 shows the installedexpansion bolt assemblies and the RRU.



3-35

Figure 3-38 Installed expansion bolt assemblies and the RRU

NOTE

It is recommended that the bottom of the mounting plate be 1,200 mm to 1,600 mm above the ground.

2. Place the mounting plate against the wall, and then use the marking pen to mark the fouranchor points. You can also mark four points according to the inter-hole distance, as shownin Figure 3-39.

Figure 3-39 Determining the anchor points

Step 2 Drill a hole at each anchor point and install the expansion bolt assembly, as shown in Figure3-40.


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Figure 3-40 Drilling a hole and installing the expansion bolt assembly

1. Use the percussion drill with a Φ14 bit to drill four holes at the anchor points.

CAUTIONProtect yourself when drilling holes in the wall. Flying dust may hurt your eyes or you mayinhale the dust.

NOTE

The drilled holes must be 52 mm to 60 mm deep.

2. After the holes are drilled, use the cleaner to clean the dust both inside and around the holes.If the inter-hole distance is too long or too short, locate and drill holes again.

3. Screw the expansion bolt slightly and put it into the hole. Hammer the assembly until theexpansion tube is completely buried into the hole.

4. Remove the bolt M10 x 75, filling tube, spring washer 10, and flat washer 10 in turn.

CAUTIONAfter disassembling the expansion bolt assembly, ensure that the top of the expansion tubeis completely buried into the wall. If it is not completely buried, the mounting plate cannotbe steady on the wall.

Step 3 Secure the mounting plate, as shown in Figure 3-41.



3-37

Figure 3-41 Securing the mounting plate

1. Place the mounting plate against the wall, and then align the mounting plate with the fourmarked anchor points.

2. Lead each bolt M10 x 75 through the spring washer 10, flat washer 10, and insulatingwasher in turn. Then, lead each assembled bolt through the hole in the mounting plate,insulating block, and finally into the expansion tube through the hole in the wall.

CAUTIONWhen installing the bolt, remove the filling tube, and then use the insulating washer andinsulating block that are delivered with the mounting plate, as shown in Figure 3-42.

Figure 3-42 Filling tube, insulating washer, and insulating block

3. Use the wrench to fix the mounting plate to the wall by tightening the bolts clockwise.

----End


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Installing the Single RRU ModuleThis describes how to install the RRU module on a metal pole. Regardless of whether themounting plate is installed on a metal pole or on a wall, the procedures for installing the moduleare the same.

Prerequisitel The RRU mounting plate is installed.

l If the RRU needs to be installed on a metal pole, the metal pole is already grounded.

ContextThe RRU module can be installed in either ordinary mode or reverse mode. In reverse mode,the front of the RRU is fixed to the mounting plate. Figure 3-43 shows two RRUs with one inordinary mode and the other in reverse mode.

Figure 3-43 One RRU in ordinary mode and the other in reverse mode

NOTE

l Before delivery, the plastic housing of the RRU is already fixed to the module. The previous figureomits the plastic housing for a better illustration of ordinary and reverse modes.

l Before delivery, the plastic housing of the RRU is fixed in the assumption that the RRU needs to beinstalled in ordinary mode. If you want to install the RRU in reverse mode, remove the plastic housingfirst. For detailed procedure, refer to 3.4.2.3 Installing the Two RRU Modules.

Procedure

Step 1 Use two screws M6 x 20 to secure the attachment plate to the module, as shown in Figure3-44.



3-39

Figure 3-44 Securing the attachment plate

CAUTIONWhen installing the attachment plate, protect the plastic housing from being scratched.l If you find that the plastic housing is put face down when unpacking the RRU, install the

attachment plate before taking out the RRU.l If you find that the plastic housing is put face up, lay cardboards or packing bags on the

ground. Then, take out the RRU and install the attachment plate.

Step 2 Fit the tabs on the attachment plate into the anchor slots of the mounting plate, as shown inFigure 3-45.


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Figure 3-45 Installing the module

CAUTIONThe tabs on the attachment plate must be fitted into the middle pair of anchor slots in the mountingplate.

Step 3 Lead two screws M6 x 20 through the holes in the bottom of the module. Then, secure the moduleto the mounting plate, as shown in Figure 3-46.



3-41

Figure 3-46 Securing the module

----End

3.4.2 Installing Two RRUsThis describes how to install two RRUs and their mounting plates. The two RRUs can be installedon a metal pole or wall.

ProcedureStep 1 Install the mounting plate of the RRU. The operation varies with the installation mode.

If... Then...


Go to 3.4.2.1 Installing the Mounting Platesof the Two RRUs on the Metal Pole.

The RRU needs to be installed on a wall, Go to 3.4.2.2 Installing the Mounting Platesof the Two RRUs on the Wall.

Step 2 Install the two RRU modules. For details, refer to 3.4.2.3 Installing the Two RRU Modules.

----End

3.4.2.1 Installing the Mounting Plates of the Two RRUs on the Metal PoleThis describes how to install the mounting plates on the metal pole.


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3.4.2.2 Installing the Mounting Plates of the Two RRUs on the WallThis describes how to install the mounting plates on the wall.

3.4.2.3 Installing the Two RRU ModulesThis describes how to install the two RRU modules on a metal pole. Regardless of whether themounting plates are installed on a metal pole or on a wall, the procedures for installing themodules are the same.

Installing the Mounting Plates of the Two RRUs on the Metal PoleThis describes how to install the mounting plates on the metal pole.


ContextYou can install the two RRUs on the metal pole by using the following methods. Select a propermethod depending on the field requirements.

l Side-mounted installation

l Rear-mounted installation

Figure 3-47 is the top view of the two modules using the side-mounted installation method.

Figure 3-47 Top view of the two modules using the side-mounted installation method

Figure 3-48 is the top view of the two modules using the rear-mounted installation method.



3-43

Figure 3-48 Top view of the two modules using the rear-mounted installation method

Procedurel Side-mounted installation

1. Install the first mounting plate by referring to 3.4.1.1 Installing the Mounting Plateof the Single RRU on the Metal Pole.

2. Use the holes numbered 2 in Figure 3-49 to install the second mounting plate.


3. Use two screws M6 x 20 to secure the multi-purpose attachment plate to the bottomof the second mounting plate, as shown in Figure 3-50.

Figure 3-50 Securing the multi-purpose attachment plate to the bottom of the secondmounting plate

4. Fit the tab on the left of the second mounting plate into the anchor slot in the firstmounting plate, as shown in Figure 3-51.


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Figure 3-51 Installing the second mounting plate

CAUTIONThe tab on the left of the second mounting plate must be fitted into the anchor slot inthe middle of the first mounting plate.

5. Use two screws M6 x 20 to secure the second mounting plate to the first one, as shownin Figure 3-52.



3-45

Figure 3-52 Securing the second mounting plate to the first one

l Rear-mounted installation1. Install the first mounting plate by referring to 3.4.1.1 Installing the Mounting Plate

of the Single RRU on the Metal Pole.2. Use the holes numbered 1 to install the second mounting plate.3. Secure the multi-purpose attachment plate to the second mounting plate at the upper

part of its back.4. Install the second mounting plate by fitting the tabs on the mounting plate into the

anchor slots in the upper pole fixture on the other side, as shown in Figure 3-53.


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5. Lead each bolt M10 x 40 through the spring washer 10, flat washer 10, and insulatingwasher in turn. Use the two bolts to secure the second mounting plate to the lowerpole fixture, as shown in Figure 3-54.

Figure 3-54 Securing the second mounting plate

----End



3-47

Installing the Mounting Plates of the Two RRUs on the WallThis describes how to install the mounting plates on the wall.

Procedure

Step 1 Install the first mounting plate by referring to 3.4.1.2 Installing the Mounting Plate of theSingle RRU on the Wall.

Step 2 Use the holes numbered 2 in Figure 3-55 to install the second mounting plate.


Step 3 Use two screws M6 x 20 to secure the multi-purpose attachment plate to the bottom of the secondmounting plate, as shown in Figure 3-56.

Figure 3-56 Securing the multi-purpose attachment plate to the bottom of the second mountingplate

Step 4 Fit the tab on the left of the second mounting plate into the anchor slot in the first mountingplate, as shown in Figure 3-57.


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CAUTIONThe tab on the left of the second mounting plate must be fitted into the anchor slot in the middleof the first mounting plate.

Step 5 Use two screws M6 x 20 to secure the second mounting plate to the first one, as shown in Figure3-58.



3-49


----End

Installing the Two RRU Modules

This describes how to install the two RRU modules on a metal pole. Regardless of whether themounting plates are installed on a metal pole or on a wall, the procedures for installing themodules are the same.



Context

Two methods can be used to install the mounting plates on the metal pole. Accordingly, you caninstall the two modules by using the following methods. Select a proper method depending onthe installation of the mounting plates.

l Side-mounted installation



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CAUTIONTo ensure that the cabling cavities of the modules face outwards, the module on the leftmust be installed in reverse mode while the one on the right must be in ordinary mode.

1. Remove the plastic housing of the RRU that needs to be installed in reverse mode, asshown in Figure 3-59.

Figure 3-59 Removing the plastic housing

CAUTIONIf you need to put the plastic housing face down, lay cardboards or packing bags onthe ground first to prevent the plastic housing from being scratched.

2. Turn the module over, and then fix the housing to the module, as shown in Figure3-60.



3-51

Figure 3-60 Installing the module in reverse mode in the housing

3. Use two screws M6 x 20 to secure the attachment plate to the module that is in reversemode, as shown in Figure 3-61.

Figure 3-61 Securing the attachment plate to the module that is in reverse mode

4. Fit the tabs on the attachment plate of the module in reverse mode into the anchor slotsin the front of the second mounting plate, as shown in Figure 3-62.


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Figure 3-62 Installing the first module

CAUTIONThe tabs on the attachment plate must be fitted into the outmost pair of anchor slotsin the mounting plate.

5. Lead two screws M6 x 20 through the holes in the bottom of the module. Then, securethe module to the mounting plate, as shown in Figure 3-63.



3-53

Figure 3-63 Securing the first module

6. Use two screws M6 x 20 to secure the attachment plate to the other module, as shownin Figure 3-64.


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Figure 3-64 Securing the attachment plate to the module that is in ordinary mode

7. Fit the tabs on the attachment plate of the module in ordinary mode into the anchorslots in the back of the second mounting plate, as shown in Figure 3-65.

Figure 3-65 Installing the second module



3-55

CAUTIONThe tabs on the attachment plate must be fitted into the outmost pair of slots in themounting plate.

8. Lead two screws M6 x 20 through the holes in the bottom of the module. Then, securethe module to the mounting plate, as shown in Figure 3-66.

Figure 3-66 Securing the second module


1. Install the first module by referring to 3.4.1.3 Installing the Single RRU Module.

2. To install the second module in ordinary mode, perform the steps same as those forinstalling the first module. To install the second module in reverse mode, first removethe plastic housing, turn the module over, and fix the housing to the module, as shownin Figure 3-59 and Figure 3-60.

NOTE

To ensure that the cabling cavities of the modules are on the same side, it is recommended thatthe second module be installed in reverse mode, as shown in Figure 3-67.


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Figure 3-67 Rear-mounted RRUs with the cabling cavities on the same side

----End

3.4.3 Installing Three RRUsThis describes how to install three RRUs and their mounting plates. The three RRUs can beinstalled on a metal pole or wall.

Procedure

Step 1 Install the mounting plate of the RRU. The operation varies with the installation mode.

If... Then...


Go to 3.4.3.1 Installing the Mounting Platesof the Three RRUs on the Metal Pole.

The RRU needs to be installed on a wall, Go to 3.4.3.2 Installing the Mounting Platesof the Three RRUs on the Wall.

Step 2 Install the three RRU modules. For details, refer to 3.4.3.3 Installing the Three RRUModules.

----End

3.4.3.1 Installing the Mounting Plates of the Three RRUs on the Metal PoleThis describes how to install the mounting plates on the metal pole.

3.4.3.2 Installing the Mounting Plates of the Three RRUs on the WallThis describes how to install the mounting plates on the wall.

3.4.3.3 Installing the Three RRU Modules



3-57

This describes how to install the three RRU modules on a metal pole. Regardless of whether themounting plates are installed on a metal pole or on a wall, the procedures for installing themodules are the same.

Installing the Mounting Plates of the Three RRUs on the Metal PoleThis describes how to install the mounting plates on the metal pole.


ContextWhen installing the three RRU modules on the metal pole, you can use either the side-mountedinstallation method or the hybrid installation method. Hybrid installation facilitates capacityexpansion of the carriers. Figure 3-68 is the top view of the three modules using the side-mounted installation method.

Figure 3-68 Top view of the three modules using the side-mounted installation method

Figure 3-69 is the top view of the three modules using the hybrid installation method.


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Figure 3-69 Top view of the three modules using the hybrid installation method

NOTE

l If there is sufficient space for installation and maintenance, ordinary mode is preferred for the RRUthat can be installed in either mode. In other words, if the side-mounted installation method is used forthe three RRUs, two RRUs are installed in ordinary mode while one RRU in reverse mode. If the hybridinstallation method is used for the three RRUs, the rear-mounted RRU, given enough space, is installedin ordinary mode.

l The following description takes the side-mounted installation method as an example. For descriptionof the hybrid installation method, refer to 3.4.1.1 Installing the Mounting Plate of the Single RRUon the Metal Pole and 3.4.2.1 Installing the Mounting Plates of the Two RRUs on the MetalPole.

Procedure

Step 1 Install the first mounting plate by referring to 3.4.1.1 Installing the Mounting Plate of theSingle RRU on the Metal Pole.






3-59




CAUTIONThe tab on the left of the second mounting plate must be fitted into the anchor slot on the left ofthe first mounting plate.



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Step 6 Fit the tab on the right of the third mounting plate into the anchor slot in the first mounting plate,as shown in Figure 3-74.



3-61

Figure 3-74 Installing the third mounting plate

CAUTIONThe tab on the right of the third mounting plate must be fitted into the anchor slot on the rightof the first mounting plate.

Step 7 Use two screws M6 x 20 to secure the third mounting plate to the first one, as shown in Figure3-75.


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Figure 3-75 Securing the third mounting plate to the first one

----End

Installing the Mounting Plates of the Three RRUs on the Wall

This describes how to install the mounting plates on the wall.

Procedure

Step 1 Install the first mounting plate by referring to 3.4.1.2 Installing the Mounting Plate of theSingle RRU on the Wall.






3-63




CAUTIONThe tab on the left of the second mounting plate must be fitted into the anchor slot on the left ofthe first mounting plate.



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Step 6 Fit the tab on the right of the third mounting plate into the anchor slot in the first mounting plate,as shown in Figure 3-80.



3-65

Figure 3-80 Installing the third mounting plate

CAUTIONThe tab on the left of the third mounting plate must be fitted into the anchor slot on the right ofthe first mounting plate.

Step 7 Use two screws M6 x 20 to secure the third mounting plate to the first one, as shown in Figure3-81.


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----End

Installing the Three RRU Modules

This describes how to install the three RRU modules on a metal pole. Regardless of whether themounting plates are installed on a metal pole or on a wall, the procedures for installing themodules are the same.



Context

CAUTIONl Install the middle module first. Otherwise, the middle module cannot be installed.

l To ensure that the cabling cavities of the modules face outwards, the module on the left mustbe installed in reverse mode while the one on the right must be in ordinary mode.

l The tabs on each attachment plate must be fitted into the outmost pair of anchor slots in eachmounting plate.



3-67

Procedure

Step 1 Use two screws M6 x 20 to secure the attachment plate to the first module, as shown in Figure3-82.

Figure 3-82 Securing the attachment plate to the first module

CAUTIONWhen installing the attachment plate, protect the plastic housing from being scratched.l If you find that the plastic housing is put face down when unpacking the RRU, install the

attachment plate before taking out the RRU.l If you find that the plastic housing is put face up, lay cardboards or packing bags on the

ground. Then, take out the RRU and install the attachment plate.

Step 2 Fit the tabs on the attachment plate of the module into the anchor slots in the back of the leftmounting plate, as shown in Figure 3-83.


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Figure 3-83 Installing the first module




3-69

Figure 3-84 Securing the first module

Step 4 Remove the plastic housing of the RRU that needs to be installed in reverse mode, as shown inFigure 3-85.



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CAUTIONIf you need to put the plastic housing face down, lay cardboards or packing bags on the groundfirst to prevent the plastic housing from being scratched.

Step 5 Turn the module over, and then fix the housing to the module, as shown in Figure 3-86.

Figure 3-86 Installing the module in reverse mode in the housing

Step 6 Use two screws M6 x 20 to secure the attachment plate to the module that is in reverse mode,as shown in Figure 3-87.

Figure 3-87 Securing the attachment plate to the module that is in reverse mode

Step 7 Fit the tabs on the attachment plate of the module in reverse mode into the anchor slots in thefront of the left mounting plate, as shown in Figure 3-88.



3-71

Figure 3-88 Installing the second module



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Figure 3-89 Securing the second module

Step 9 Use two screws M6 x 20 to secure the attachment plate to the third module, as shown in Figure3-82.

Step 10 Fit the tabs on the attachment plate of the module in ordinary mode into the anchor slots in theback of the right mounting plate, as shown in Figure 3-90.



3-73

Figure 3-90 Installing the third module



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Figure 3-91 Securing the third module

----End

3.5 Installing the RRU on the TowerBefore installing the RRU on the tower, you need to assemble the parts and then lift them up tothe tower.

1. 3.5.1 Assembling the Parts of the RRUThis describes how to assemble the parts of the RRU before they are lifted up to the tower.

2. 3.5.2 Lifting the Assembled RRUThis describes how to lift the RRU up to the tower after the parts are assembled. The partsinclude the mounting plate, RRU module, pole fixture, and plastic housing.

3. 3.5.3 Installing the Assembled RRU on the TowerThis describes how to install the assembled RRU on the metal pole after all parts are liftedup to the tower.

3.5.1 Assembling the Parts of the RRUThis describes how to assemble the parts of the RRU before they are lifted up to the tower.



3-75

ContextTIP

When assembling the parts, it is recommended that the module be put upside down. This facilitates theinstallation of the mounting plate.

Procedure



Step 2 Use three screws M6 x 20 to secure the multi-purpose attachment plate to the mounting plate,as shown in Figure 3-93.

Figure 3-93 Securing the multi-purpose attachment plate

Step 3 Install a pole fixture on the mounting plate at the lower part of its back by tightening two boltsM10 x 40, as shown in Figure 3-94.


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Figure 3-94 Installing a pole fixture

Step 4 Use two screws M6 x 20 to secure the attachment plate to the module, as shown in Figure3-95.

Figure 3-95 Securing the attachment plate

CAUTIONWhen installing the attachment plate, protect the plastic housing from being scratched.

l If you find that the plastic housing is put face down when unpacking the RRU, install theattachment plate before taking out the RRU.

l If you find that the plastic housing is put face up, lay cardboards or packing bags on theground. Then, take out the RRU and install the attachment plate.

Step 5 Align the anchor slots in the mounting plate with the tabs on the attachment plate. Then, assemblethe module and mounting plate, as shown in Figure 3-96.



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Figure 3-96 Assembling the module and mounting plate

CAUTIONl Lay cardboards or packing bags on the ground first to prevent the plastic housing from being

scratched.l The tabs on the attachment plate must be fitted into the middle pair of anchor slots in the

mounting plate.



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Figure 3-97 Securing the module and mounting plate

----End

3.5.2 Lifting the Assembled RRUThis describes how to lift the RRU up to the tower after the parts are assembled. The parts includethe mounting plate, RRU module, pole fixture, and plastic housing.

Procedure

Step 1 Lead the rope through the holes in the mounting plate and then knot the rope, as shown in Figure3-98.

Figure 3-98 Assembled RRU tied with the rope

NOTE

The method shown in the previous figure is only for reference. You can use other methods to lift theassembled RRU based on field requirements.

Step 2 Use the same rope to bind another two pole fixtures and parts like bolts, spring washers, and flatwashers.



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Step 3 Lift all the parts up to the tower.

NOTE

It is recommended that another rope be tied to the assembled RRU to prevent the RRU from colliding withthe tower.

----End

3.5.3 Installing the Assembled RRU on the TowerThis describes how to install the assembled RRU on the metal pole after all parts are lifted upto the tower.

Procedure

Step 1 Untie the ropes.TIPYou can also untie the ropes after the installation is complete.

Step 2 Mount the upper fixture assembly on the metal pole. Ensure that the four ends of the fixtureassembly are on the same plane, as shown in Figure 3-99.

Figure 3-99 Mounting the upper fixture assembly


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NOTE

l To facilitate maintenance, it is recommended that the RRU be installed with its front or rear facing thetower.

l Two pairs of holes can be used for mounting the fixture assembly, as shown in Figure 3-100. If the60-95 mm bolts are used, use pair 1. If the 90-114 mm bolts are used, use pair 2.

Figure 3-100 Holes in the fixture assembly

Step 3 Use the level bar to check whether the four ends of the fixture assembly are on the same plane.Use the tape to measure the distance and check whether the two pole fixtures are parallel.

NOTE

If the difference between L1 and L2, as shown in Figure 3-101, is beyond ±1 mm, the two pole fixturesare not parallel.

Figure 3-101 Measuring L1 and L2

If... Then...

The pole fixtures are neither horizontal norparallel,

Go to Step 2 to adjust the fixture assembly.

The pole fixtures are horizontal and parallel, Go to Step 4.

Step 4 Install the assembled RRU by fitting the tabs on the mounting plate into the anchor slots in thepole fixture, as shown in Figure 3-102.



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Figure 3-102 Installing the assembled RRU

Step 5 Use two bolts M10 x 110 to mount the lower fixture assembly on the metal pole, as shown inFigure 3-103.


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Figure 3-103 Mounting the lower fixture assembly

NOTE


----End

3.6 Installing the SRXUThis describes how to install the SRXU on the RRU in one-module, two-module centralized, orthree-module centralized installation mode.

Context

CAUTIONPower off the SRXU and corresponding RRU before installing the SRXU. Otherwise, the RRUor SRXU may be burnt.

3.6.1 Installing the SRXU on a Single RRUThis describes how to install the SRXU on a single RRU that is mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.



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3.6.2 Installing the SRXUs on the Two RRUsThis describes how to install the SRXUs on the two RRUs that are mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.

3.6.3 Installing the SRXUs on the Three RRUsThis describes how to install the SRXUs on the three RRUs that are mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.

3.6.1 Installing the SRXU on a Single RRUThis describes how to install the SRXU on a single RRU that is mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.

PrerequisiteThe RRU is installed.

ContextThe SRXU can be installed on the RRU that is in either ordinary or reverse mode. Figure3-104 shows the SRXU installed on the single RRU.

Figure 3-104 SRXU installed on the single RRU

NOTE

l Determine the position of the SRXU based on the installation of the RRU. If the RRU is in ordinarymode, install the SRXU in ordinary mode. If the RRU is in reverse mode, install the SRXU in reversemode. This consistency ensures that the cabling cavities of the RRU and SRXU are on the same side.

l The procedures for installing the SRXU in ordinary and reverse modes are similar. The followingdescription takes installing the SRXU in ordinary mode as an example.

Procedure

Step 1 Remove the plastic housing of the RRU, as shown in Figure 3-105.


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Step 2 Secure the connecting boards to the RRU module, as shown in Figure 3-106.

Figure 3-106 Securing the connecting boards

Step 3 Secure the attachment plate to the SRXU, as shown in Figure 3-107.



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Figure 3-107 Securing the attachment plate to the SRXU

Step 4 Install the SRXU by fitting the tabs on the attachment plate into the anchor slots in the connectingboard, as shown in Figure 3-108.

Figure 3-108 Installing the SRXU

Step 5 Lead two screws M6 x 20 through the holes in the bottom of the module. Then, secure the SRXUto the lower connecting board, as shown in Figure 3-109.


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Figure 3-109 Securing the SRXU

NOTE

After the module is installed, it is recommended that you first install the cables, then check hardwareinstallation, and finally install the housing when the check is passed. For details about how to install thehousing, refer to 3.9 Installing the Housing of the RRU and SRXU.

----End

3.6.2 Installing the SRXUs on the Two RRUsThis describes how to install the SRXUs on the two RRUs that are mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.

PrerequisiteThe two RRUs are installed.

ContextThe SRXU can be fixed to either the front or the rear of the RRU. If the RRU is in ordinarymode, install the SRXU in ordinary mode. If the RRU is in reverse mode, install the SRXU inreverse mode. This consistency ensures that the cabling cavities of the RRU and SRXU are onthe same side. Figure 3-110 shows the SRXUs installed on the two RRUs.



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Figure 3-110 SRXUs installed on the two RRUs


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1. Remove the plastic housing of each RRU, as shown in Figure 3-111.

Figure 3-111 Removing the plastic housings

2. Secure the connecting boards to the RRU module that is in ordinary mode, as shownin Figure 3-112.



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Figure 3-112 Securing the connecting boards to the RRU module that is in ordinarymode

3. Secure the attachment plate to one SRXU, as shown in Figure 3-113.

Figure 3-113 Securing the attachment plate to one SRXU


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4. Install the SRXU on the RRU that is in ordinary mode by fitting the tabs on theattachment plate into the anchor slots in the connecting board, as shown in Figure3-114.

Figure 3-114 Installing the SRXU

5. Lead two screws M6 x 20 through the holes in the bottom of the module. Then, securethe SRXU to the lower connecting board, as shown in Figure 3-115.



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Figure 3-115 Securing the SRXU

6. Perform the previous steps to install the other SRXU on the RRU that is in reversemode.

NOTE

After the module is installed, it is recommended that you first install the cables, then checkhardware installation, and finally install the housing when the check is passed. For details abouthow to install the housing, refer to 3.9 Installing the Housing of the RRU and SRXU.

l Rear-mounted installation1. Remove the plastic housing of each RRU, as shown in Figure 3-116.


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2. Install the two SRXUs by referring to 3.6.1 Installing the SRXU on a Single RRU.The procedure for installing the SRXUs on the two rear-mounted RRUs is the sameas that for installing the SRXU on the single RRU.

Figure 3-117 shows the SRXUs installed on the two rear-mounted RRUs.

Figure 3-117 SRXUs installed on the two rear-mounted RRUs

NOTE

After the module is installed, it is recommended that you first install the cables, then checkhardware installation, and finally install the housing when the check is passed. For details abouthow to install the housing, refer to 3.9 Installing the Housing of the RRU and SRXU.

----End



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3.6.3 Installing the SRXUs on the Three RRUsThis describes how to install the SRXUs on the three RRUs that are mounted on the metal pole.Regardless of whether the RRUs are installed on a metal pole or on a wall, the procedures forinstalling the SRXUs are the same.

PrerequisiteThe three RRUs are installed.

ContextThe SRXU can be fixed to either the front or the rear of the RRU. If the RRU is in ordinarymode, install the SRXU in ordinary mode. If the RRU is in reverse mode, install the SRXU inreverse mode. This consistency ensures that the cabling cavities of the RRU and SRXU are onthe same side. Figure 3-118 shows the SRXUs installed on the three RRUs.

Figure 3-118 SRXUs installed on the three RRUs

Procedure

Step 1 Remove the plastic housings of the RRUs on the left and right, as shown in Figure 3-119


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Step 2 Install two SRXUs on the left and right RRUs by referring to 3.6.2 Installing the SRXUs onthe Two RRUs. The procedure for installing the SRXUs on these RRUs is the same as that forinstalling the SRXUs on the two side-mounted RRUs.

Step 3 Determine the position of the third SRXU as required.

NOTE

The third SRXU can be installed on either the left or the right. It is recommended that it be installed on theright. The following description takes installing the third SRXU on the right as an example.

Step 4 Secure the connecting boards to the right SRXU that is already installed, as shown in Figure3-120.



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Figure 3-120 Securing the connecting boards

Step 5 Secure the attachment plate to the third SRXU.

Step 6 Install the third SRXU on the right SRXU by fitting the tabs on the attachment plate into theanchor slots in the connecting board, as shown in Figure 3-121.

Figure 3-121 Installing the third SRXU

Step 7 Lead two screws M6 x 20 through the holes in the bottom of the module, as shown in Figure3-122. Then, secure the SRXU to the lower connecting board.


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Figure 3-122 Securing the third SRXU

NOTE

After the module is installed, it is recommended that you first install the cables, then check hardwareinstallation, and finally install the housing when the check is passed. For details about how to install thehousing, refer to 3.9 Installing the Housing of the RRU and SRXU.

----End

3.7 Installing RRU and SRXU CablesThis describes how to install the cables of the RRU and SRXU and how to open and close thecover plate of the RRU or SRXU cabling cavity.

3.7.1 Installing the PGND Cable of the RRU/SRXUThe PGND cable ensures the grounding of the RRU/SRXU.

3.7.2 Installing the -48 V DC Power Cable of the RRU/SRXUThe -48 V DC power cable feeds external -48 V DC power to the RRU/SRXU.

3.7.3 Installing the RF Jumper of the RRU/SRXUThe RF jumper of the RRU can be categorized into two types: feeder jumper and interconnectjumper. The antenna jumper of the RRU/SRXU can be connected to the feeder or directly to theantenna. The interconnect jumper transmits RF signals between two RRUs or two SRXUs.

3.7.4 Installing the CPRI Optical Cable of the RRU/SRXUThe CPRI optical cable transmits CPRI signals between the BBU and the RRU/SRXU andbetween the RRU and the RRU/SRXU.



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3.7.5 Installing the Alarm Cable of the RRUAfter the alarm cable is installed, the external signals are monitored.

3.7.6 Installing the AISG Multi-Wire Cable of the RRU/SRXUThe AISG multi-wire cable connects the RRU/SRXU to the RCU.

3.7.7 Installing the AISG Extension Cable of the RRU/SRXUIf the distance between the RRU/SRXU and the RCU is longer than 5 m, an AISG extensioncable is required.

3.7.8 Opening and Closing the Cover Plate of the RRU Cabling CavityBefore installing the -48 V DC power cable, CPRI optical cable, and Boolean input cable, youneed to open the cover plate of the RRU cabling cavity. When the cables are connected to themodule, close the cover plate.

3.7.9 Opening and Closing the Cover Plate of the SRXU Cabling CavityBefore installing the CPRI optical cable and PGND cable, you need to open the cover plate ofthe SRXU cabling cavity. When the cables are connected to the module, close the cover plate.

3.7.1 Installing the PGND Cable of the RRU/SRXUThe PGND cable ensures the grounding of the RRU/SRXU.

Procedure

Step 1 Route the PGND cable by referring to 3.1.3 Cabling Specifications for the NodeB.

Step 2 Add an OT terminal to each end of the PGND cable by referring to Assembling the OTTerminal and the Power Cable.

NOTE

The 2-hole OT terminal can also be added to the PGND cable. The method of adding a 2-hole OT terminalis the same that of adding an OT terminal.

Step 3 Connect the PGND cable to the RRU, as shown in Figure 3-123. If there are multiple centralizedRRUs, connect one PGND cable to each RRU.

Figure 3-123 Connecting the PGND cable (1)


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CAUTIONKeep the crimping tube of the OT terminal in the direction shown in Figure 3-124 when installingthe OT terminal.

Figure 3-124 Connecting the OT terminal

Step 4 Perform the next step based on the configuration.

If... Then...

No SRXU is installed, Go to Step 6.

The SRXU is installed, Go to Step 5.

Step 5 Connect one end of the SRXU PGND cable to the grounding bolt on the RRU and the other endto the grounding bolt in the cabling cavity of the SRXU, as shown in Figure 3-125.

Figure 3-125 Connecting the PGND cable (2)



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NOTE

Ensure that the PGND cable of the SRXU is routed along its dedicated cable trough, as shown in Figure3-126.

Figure 3-126 Cable trough for the PGND cable of the SRXU

CAUTIONKeep the crimping tube of the OT terminal in the direction shown in Figure 3-124 when installingthe OT terminal.

Step 6 Connect the other end of the PGND cable to the nearest grounding bolt, depending on theconfiguration of auxiliary devices at the site.

----End

3.7.2 Installing the -48 V DC Power Cable of the RRU/SRXUThe -48 V DC power cable feeds external -48 V DC power to the RRU/SRXU.


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Context

CAUTIONIf the DC power cable is used to lead external power to the RRU, the DC power cable shouldbe a shielded power cable. Otherwise, the RRU is vulnerable to damage caused by lightningstroke.

Procedure

Step 1 Route the power cable by referring to 3.1.3 Cabling Specifications for the NodeB.

Step 2 Add two OT terminals to one end of the power cable. Figure 3-127 shows the power cable withtwo OT terminals.

Figure 3-127 Power cable with two OT terminals

To add the OT terminals, perform the following steps:

1. Determine the lengths of the power cable for different operations according to the scaleson the cover plate of the cabling cavity, as shown in Figure 3-128.

Figure 3-128 Determining lengths of power cable for different operation

2. Based on the determined lengths, remove the jacket and shielding layer from the powercable. Then, remove the jacket of a specified length from each wire, as shown in Figure3-129.



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Figure 3-129 Stripping the cable

3. Add an OT terminal to each wire by referring to Assembling the OT Terminal and thePower Cable. Figure 3-130 shows the two OT terminals on the power cable.

Figure 3-130 Two OT terminals on the power cable

4. Remove about 15 mm jacket from the power cable. The shielding layer is exposed, as shownin Figure 3-131.


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Figure 3-131 Removing the jacket from the power cable

CAUTIONThis step must be performed after the previous steps are complete. Otherwise, the exposedshielding layer would be distorted.

Step 3 Remove the waterproof fillers from the cable troughs of the cabling cavity. Route the powercable along its dedicated cable trough. Figure 3-132 shows the cable troughs in the cablingcavity.

Figure 3-132 Cable troughs in the cabling cavity

Step 4 Open the cover over the terminals for the power cable, as shown in Figure 3-133.



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Figure 3-133 Opening the cover

Step 5 Connect the OT terminal on the blue -48 V DC wire to the terminal labeled NEG(-). Connectthe OT terminal on the black or brown GND wire to the terminal labeled RTN(+). Then, tightenthe screws.

Step 6 Remove the screw on the strap labeled PGND. Figure 3-133 shows the strap for the power cable.

Step 7 Press the strap on the exposed shielding layer of the power cable, and then tighten the screw.Figure 3-134 shows the shielding layer pressed by the strap.

Figure 3-134 Shielding layer pressed by the strap


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CAUTIONEnsure that it is the shielding layer, rather than the jacket of the power cable or the two wires,that is pressed by the strap.

Step 8 Close the cover.

Step 9 Based on field requirements, bind the -48 V DC power cable to a proper position. For details,refer to 3.1.3 Cabling Specifications for the NodeB.

NOTE

You can bind all cables by using cable ties after connecting them in the cabling cavity.

Step 10 Connect the other end of the power cable.1. Remove about 50 mm jacket from the power cable.2. Twist the shielding layer of the power cable into one strand, and then wrap the strand with

the heat-shrinkable tube of Ф5, as shown in Figure 3-135.

CAUTIONDo not apply too much force lest the shielding layer be broken.

Figure 3-135 Twisting the shielding layer into one strand

3. Add an OT terminal to the shielding layer, as shown in Assembling the OT Terminal andthe Power Cable.

4. Wrap the power cable with the heat-shrinkable tube of Ф14 at the point where the shieldinglayer is removed, as shown in Figure 3-136.

Figure 3-136 Power cable with the heat-shrinkable tube

5. Connect the OT terminal on the shield layer to the shielding grounding bar of the powersupply.

6. Add OT terminals to the blue -48 V wire and the black GND wire, and then connect theOT terminals to the wiring terminals on the power supply.

Step 11 Check whether the power cable of the SRXU needs to be installed.



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If... Then...

The SRXU is installed, Go to Step 12 to install the power cable of the SRXU.

No SRXU is installed, Go to Step 14.

Step 12 Fix the waterproof DB9 connector at one end of the SRXU power cable to the RET/PWR_SRXUport at the bottom of the RRU.

Step 13 Fix the waterproof DB9 connector at the other end of the SRXU power cable to the PWR_SRXUport at the bottom of the SRXU.

Step 14 Label the E1/T1 cable by referring to Labeling DBS3800 Cables.

----End

3.7.3 Installing the RF Jumper of the RRU/SRXUThe RF jumper of the RRU can be categorized into two types: feeder jumper and interconnectjumper. The antenna jumper of the RRU/SRXU can be connected to the feeder or directly to theantenna. The interconnect jumper transmits RF signals between two RRUs or two SRXUs.

Context

If the distance between the RRU/SRXU and the antenna is shorter than 14 m, use an antennajumper of fixed length to connect the RRU/SRXU and the antenna.

For details of the connections of the RF jumpers in different networking modes, refer to 2.3.6.3RF Jumper Connections of the RRU.

NOTE

Use a torque wrench to tighten the DIN connector to 27 N·m.

Procedurel To install an antenna jumper between the antenna and the RRU/SRXU, perform the

following steps:

NOTE

Connect the antenna jumper to the appropriate RF port according to the configurations.

Table 3-2 Connecting the antenna jumper to the appropriate RF port

If... Then...

Only the RRU is configured, Connect one end of the antenna jumper tothe RF port on the RRU.

Both the RRU and the SRXU areconfigured,

Connect one end of the antenna jumper tothe RF port on the SRXU.


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1. Determine the position to ground the jumper by referring to Location Requirementsfor Grounding the Feeder of the Mini Base Station.

2. Install the grounding kit at the determined position by referring to Installing FeederGrounding Kits.

3. Attach labels at the points 100 mm from each end of the antenna jumper by referringto Labeling the DBS3800 Antenna System.

4. Fix the DIN connector of the antenna jumper to the appropriate RF port on the RRU/SRXU.

5. Wrap the joint with the PVC insulating tape.

NOTE

Wrap the joint spirally upwards, downwards, and then upwards again. In other words, the jointis wrapped with three layers of insulating tape. For every two adjacent tape layers, the tape onthe upper layer overlaps about half the width of the tape on the lower layer.

6. Wrap the joint with the waterproof tape in the same way over the PVC insulating tape.Figure 3-137 shows the waterproofed joints.

Figure 3-137 Waterproofed joints

7. Mount the 50-ohm matched load on the idle RF port. Use the PVC insulating tape andwaterproof tape to wrap the joint between the matched load and the RF port in thesame way as described in the previous steps.

l To install an antenna jumper between the antenna and the RRU/SRXU, perform thefollowing steps:

1. Decide a proper length of the antenna jumper according to the real cabling.

2. Connect one end of the antenna jumper to the feeder according to the configurations.

3. Attach labels at the points 100 mm from each end of the antenna jumper by referringto Labeling the DBS3800 Antenna System.

4. Connect the antenna jumper to the appropriate RF port according to the configurationsdescribed in Table 3-2.



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5. Connect the antenna jumper to the RRU/SRXU by referring to Step 4 through Step7 in the description about using the antenna jumper to connect the antenna to the RRU/SRXU.

l To install an interconnect jumper between two RRUs/SRXUs, perform the following steps:

CAUTIONInterconnection between combined cabinets is implemented exclusively between RRUs orbetween SRXUs.

1. Remove the dustproof cap from the RX_IN/OUT port at the bottom of each RRU/SRXU.

2. Fix the 2W2 connectors at both ends of the interconnect jumper to the RX_IN/OUTports on the two RRUs/SRXUs respectively. Then, tighten the screws on theconnectors using a screwdriver.

----End

3.7.4 Installing the CPRI Optical Cable of the RRU/SRXUThe CPRI optical cable transmits CPRI signals between the BBU and the RRU/SRXU andbetween the RRU and the RRU/SRXU.

Context

CAUTIONl The bending radius of the optical cable must be at least 20 times the outer diameter of the

optical cable. When bending the optical cable or fiber tail, adhere to this rule.l Wear an ESD wrist strap or a pair of ESD gloves when performing the operations to prevent

the possible damage to the board, module, or electrical parts caused by the ESD.

Procedurel Install the CPRI optical cable between the BBU and the RRU.

1. Insert the optical module into the CPRI_W port in the SRXU cabling cavity, as shownin Figure 3-138.


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Figure 3-138 CPRI_W port in the RRU cabling cavity

2. Fix the connector at one end of the optical cable into the optical module in the CPRI_Wport of the RRU cabling cavity.

CAUTIONTo connect the optical cable, adhere to the following rules:l The TX port on the BBU is connected to the RX port on the RRU.

l The RX port on the BBU is connected to the TX port on the RRU.

3. Remove the screw on the strap. Then, remove the waterproof filler from the cabletrough for the optical cable. Figure 3-139 shows the strap and waterproof filler.



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Figure 3-139 Strap and waterproof filler

4. Route the optical cable along the cable trough, press the strap on the cable, and thentighten the screw.

5. Route the optical cable close to the BBU by referring to 3.1.3 Cabling Specificationsfor the NodeB.

6. Connect the other end of the optical cable to the appropriate CPRI port on the BBU.7. Label the CPRI optical cable by referring to Labeling DBS3800 Cables.

l Install the CPRI optical cable between the RRU and SRXU.1. Insert the optical module into the CPRI_E port in the SRXU cabling cavity, as shown

in Figure 3-138.2. Fix the connector at one end of the optical cable into the optical module in the CPRI_E

port of the RRU cabling cavity.

CAUTIONTo connect the optical cable, adhere to the following rules:l The TX port on the RRU is connected to the RX port on the SRXU.

l The RX port on the RRU is connected to the TX port on the SRXU.

3. Remove the screw on the strap. Then, remove the waterproof filler from the cabletrough for the optical cable. Figure 3-139 shows the strap and waterproof filler.


5. Route the optical cable close to the SRXU.6. Insert the optical module into the CPRI_W port in the SRXU cabling cavity, as shown

in Figure 3-140.


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Figure 3-140 CPRI_W port in the SRXU cabling cavity

7. Fix the connector at the other end of the optical cable into the optical module in theCPRI_W port of the SRXU cabling cavity.

CAUTIONTo connect the optical cable, adhere to the following rules:l The TX port on the RRU is connected to the RX port on the SRXU.

l The RX port on the RRU is connected to the TX port on the SRXU.

8. Remove the waterproof filler from the cable trough for the optical cable. Figure3-141 shows the cable trough for the optical cable.



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Figure 3-141 Cable trough for the optical cable in the SRXU cabling cavity


10. Label the CPRI optical cable by referring to Labeling DBS3800 Cables.

----End

3.7.5 Installing the Alarm Cable of the RRUAfter the alarm cable is installed, the external signals are monitored.

Procedure

Step 1 Fit a protection tube onto the alarm cable. Ensure that the cable reaches out of the protectiontube in proper length.

Step 2 Fix the DB15 connector to the RS485/EXT_ALM port in the cabling cavity of the RRU.

Step 3 Remove the waterproof fillers from the cable troughs of the cabling cavity. Route the alarmcable along its dedicated cable trough. Figure 3-142 shows the cable troughs in the cablingcavity.


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Figure 3-142 Cable troughs in the cabling cavity

Step 4 Based on field requirements, bind the alarm cable to a proper position. For details, refer to 3.1.3Cabling Specifications for the NodeB.

NOTE

You can bind all cables by using cable ties after connecting them in the cabling cavity.

Step 5 Connect the other end of the alarm cable depending on the configuration of auxiliary devices atthe site.

If... Then...

No SPD40R is used, Connect this end to the port for Boolean alarm signals or RS485 signalson the external equipment.

An SPD40R is used, Connect this end to the SPD40R.

For details about how to connect the alarm cable to the SPD40R, referto the SPD40R User Guide.

Step 6 Waterproof both ends of the protection tube.

Step 7 Label the E1/T1 cable by referring to Labeling DBS3800 Cables.

----End

3.7.6 Installing the AISG Multi-Wire Cable of the RRU/SRXUThe AISG multi-wire cable connects the RRU/SRXU to the RCU.



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Procedure

Step 1 Fix the waterproof DB9 connector at one end of the AISG multi-wire cable to the appropriateport.

If... Then...

Only the RRU is configured, Fix the waterproof DB9 connector to the RET/PWR_SRXU port at the bottom of the RRU.

Both the RRU and the SRXU areconfigured,

Fix the waterproof DB9 connector to the RET port at thebottom of the SRXU.

Step 2 Fix the AISG female connector at the other end of the cable to the AISG male connector of theAISG extension cable or that on the RCU.

----End

3.7.7 Installing the AISG Extension Cable of the RRU/SRXUIf the distance between the RRU/SRXU and the RCU is longer than 5 m, an AISG extensioncable is required.

Procedure

Step 1 Fix the AISG male connector at one end of the AISG extension cable to the AISG femaleconnector of the AISG multi-wire cable.

Step 2 Fix the AISG female connector at the other end to the AISG male connector on the RCU.

----End

3.7.8 Opening and Closing the Cover Plate of the RRU CablingCavity

Before installing the -48 V DC power cable, CPRI optical cable, and Boolean input cable, youneed to open the cover plate of the RRU cabling cavity. When the cables are connected to themodule, close the cover plate.

Procedurel Opening the Cover Plate of the RRU Cabling Cavity

1. Loosen the six captive screws on the cabling cavity, as shown in Figure 3-143.


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Figure 3-143 Loosening the six captive screws

2. Open the cover plate, as shown in Figure 3-144.

Figure 3-144 Opening the cover plate



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CAUTIONWaterproof fillers are pre-installed in the cable troughs. Keep the idle fillers for lateruse.

l Closing the Cover Plate of the RRU Cabling Cavity1. Close the cover plate.2. Tighten the screws in the order as shown in Figure 3-145.

Figure 3-145 Tightening the screws

CAUTIONUse a torque wrench to tighten the screws to 1.4 N·m.

----End

3.7.9 Opening and Closing the Cover Plate of the SRXU CablingCavity

Before installing the CPRI optical cable and PGND cable, you need to open the cover plate ofthe SRXU cabling cavity. When the cables are connected to the module, close the cover plate.

Procedurel Opening the Cover Plate of the SRXU Cabling Cavity

1. Loosen the six captive screws on the cabling cavity, as shown in Figure 3-146.


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Figure 3-146 Loosening the six captive screws

2. Open the cover plate, as shown in Figure 3-147.

Figure 3-147 Opening the cover plate

CAUTIONWaterproof fillers are pre-installed in the cable troughs. Keep the idle fillers for lateruse.



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l Closing the Cover Plate of the SRXU Cabling Cavity

1. Close the cover plate.

2. Tighten the screws in the order as shown in Figure 3-148.

Figure 3-148 Tightening the screws

CAUTIONUse a torque wrench to tighten the screws to 1.4 N·m.

----End

3.8 Powering On the RRU/SRXUThis describes how to power on the RRU/SRXU. The RRU, supplied with -48 V DC power,feeds power to the SRXU through a power cable. During power-on, you need to check the statusof the LEDs on the RRU/SRXU.

Prerequisite

The input voltage to the RRU stays within the range of -37 V DC to -60 V DC.

Procedure

Step 1 Turn on the power switch of the external power supply to the RRU/SRXU.

Step 2 Check the status of the LEDs on the cabling cavity of the RRU. Table 3-3 describes the LEDsand their status.


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LED Color Status Description

RUN Green ON The module has power input, yet themodule is faulty.

OFF The module has no power input, orthe module is faulty.

1s ON, 1s OFF The module is running as configured.

0.5s ON, 0.5sOFF

Software is being loaded to themodule, or the module is notconfigured.

ALM Red ON The module is reporting alarms(excluding VSWR related alarms).


Step 3 Check the status of the LEDs on the cabling cavity of the SRXU. Table 3-4 describes the LEDsand their status.






0.5s ON, 0.5sOFF


ALM Red ON The module is reporting alarms(excluding VSWR-related alarms).


Step 4 Perform the next step based on the status of the LEDs.

If... Then...

The RRU/SRXU is operational, End the power-on task.

The RRU/SRXU is faulty, Clear the fault, and then go to Step 1.

----End



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3.9 Installing the Housing of the RRU and SRXUAfter the SRXU is fixed to the RRU, install the housing after checking the hardware installation.

ContextWhen loading the software and commissioning the module, you may need to check the operatingstatus of the module through the cover plate of the cabling cavity. Therefore, you can install thehousing after system commissioning.

Procedure

Step 1 Install the housing by fitting the tabs into the anchor slots in the module, as shown in Figure3-149.

Figure 3-149 Installing the housing

Step 2 Use two bolts M6 x 14 to secure the housing, as shown in Figure 3-150.


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Figure 3-150 Securing the housing

----End

3.10 Checklists for Hardware Installation of DistributedNodeBs and Mini NodeBs

This describes the checklists for hardware installation and cable connections.

Checklist for NodeB Installation

Table 3-5 Checklist for NodeB installation

SN Item

1 The layout of the NodeB complies with the engineering design.

2 In pole installation mode, the fixture assemblies are secure and steady.The NodeB is securely installed without any twist.

3 In wall installation mode, the holes in the NodeB are well aligned withthose for expansion bolts and the NodeB is placed against the wall securelyand evenly.

4 In stand installation mode, holes in the NodeB are well aligned with thosefor expansion bolts and the stand is steady.

5 In wall and stand installation modes, the NodeB is secure and steady.

6 The waterproof caps at the bottom of the module are bound with the cablesnearby.

7 The NodeB surface is clean and neat and the external paint is satisfactory.



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Checklist for Cable Connections

Table 3-6 Checklist for cable connections

SN Item

1 All self-made PGND cables are copper-based with the proper wirediameters. There is no breaking device such as switch and fuse in theelectric connection of the grounding system. There is no short circuit.

2 The redundant part of the power cable or PGND cable is stripped off ratherthan coiled.

3 The lugs at both ends of the power cable or the PGND cable are securelysoldered or crimped.

4 All cables are neatly bound with ties installed at even intervals, to a propertightness, and in the same direction.

5 The power cable and PGND cable are routed separately from other cables.

6 Labels at both ends of each cable are legible.

7 l In the indoor environment, extra cable ties are stripped off and all cutsare smooth without sharp projections.

l In the outdoor environment, each cable tie has an extra length rangingfrom 3 mm to 5 mm.

8 The power cable, the signal cables, and the feeders are not crossed. If thesecables are parallel, the space between them is greater than 3 cm.

9 Labels, tags, and nameplates are correct, legible, and complete.

10 When the power cable and transmission cable are routed on the wall, theyare fixed by cabling clips.

11 When the power cable and transmission cable are routed on the cable rackor the pole, they are fixed by cable ties. The transmission cable is fittedwith a protection tube. In outdoor routing, the protection tube iswaterproofed.

12 All cable connections are secure. Pay special attention to those at themodule bottom.

Checklist for Power Cable Connections

Table 3-7 Checklist for power cable connections

SN Item

1 When the batteries are installed, the power cable is properly connected.This helps to ensure that the BBU3900 is operational even if the mainspower fails.


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SN Item

2 The AC power cable and the DC power cable are separately routed.

3 The live wire and neutral wire are properly connected to the wiringterminals on the external power supply.

Checklist for PGND Cable Connections

Table 3-8 Checklist for PGND cable connections

SN Item

1 The PGND cable is connected to the protection grounding bar.

2 The cross-sectional area of the PGND cable is no less than 25 mm2.

Checklist for Signal Cable Connections

Table 3-9 Checklist for signal cable connections

SN Item

1 The connectors of signal cables are tight and secure.

2 The connectors of signal cables are intact.

3 Signal cables are not scratched or broken.

4 Signal cables are neatly bound with ties installed at even intervals and toa proper tightness.

5 Extra cable ties are cut off. All cuts are smooth without sharp projections.

6 The cables layout facilitates maintenance and expansion.

7 Both ends of each cable are correctly and clearly labeled.

8 The distance between the bundled fiber tails and the BBU3900 panel isshorter than 70 mm.



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4 Maintaining RRU and SRXU Hardware

About This Chapter

After the RRU and SRXU are deployed, accepted, and put into use, routine maintenance isperformed to ensure the functionality of the modules.

4.1 Equipment Maintenance Items for the RRU/SRXUThe equipment maintenance items for the RRU/SRXU involve the surface, cleanliness, andLEDs on the equipment.

4.2 Powering On/Off the RRU/SRXUThis describes how to power on/off the RRU/SRXU. If the SRXU is fixed to the RRU, themodules must be powered on/off at the same time.

4.3 Replacing an RRUThis describes how to replace an RRU. The RRU, a remote radio unit, forms a distributed NodeBsystem with the BBU. Replacing an RRU disrupts all the services carried by the RRU.

4.4 Replacing an SRXUThis describes how to replace an SRXU. The SRXU is a remote radio unit that is used for capacityexpansion of the carriers. It forms a distributed NodeB system with other modules such as RRUand BBU. Replacing an SRXU disrupts all the services carried by the SRXU and thecorresponding RRU.

4.5 Replacing an Optical ModuleThis describes how to replace an optical module. The optical module provides the interface foroptical-electrical conversion, thus enabling transmission through optical cables between theBBU and other devices. You need to disconnect the optical cables when replacing the faultyoptical module. Therefore, services on the optical cables are disrupted during the replacement.

RRUUser Guide 4 Maintaining RRU and SRXU Hardware


4-1

4.1 Equipment Maintenance Items for the RRU/SRXUThe equipment maintenance items for the RRU/SRXU involve the surface, cleanliness, andLEDs on the equipment.

Equipment Maintenance Items

Table 4-1 describes the equipment maintenance items for the RRU/SRXU.

Table 4-1 Equipment maintenance items for the RRU/SRXU

Item Frequency Guidelines Reference Standard

Surface check Monthly orquarterly

Check whether the surfaceof each equipment isimpaired and whether thelabel of each equipment islegible.

-

Cleanlinesscheck

Monthly orquarterly

Check whether everyequipment is clean.

The surface and inside ofthe equipment are clean.

LED check Monthly orquarterly

Check whether the LEDson each equipment arefunctional.

For information of theLEDs, refer to 2.1.2 LEDson the RRU or 2.2.2LEDs on the SRXU.

4.2 Powering On/Off the RRU/SRXUThis describes how to power on/off the RRU/SRXU. If the SRXU is fixed to the RRU, themodules must be powered on/off at the same time.

4.2.1 Powering On the RRU/SRXUThis describes how to power on the RRU/SRXU. The RRU, supplied with -48 V DC power,feeds power to the SRXU through a power cable. During power-on, you need to check the statusof the LEDs on the RRU/SRXU.

4.2.2 Powering Off the RRU/SRXUThis describes how to power off the RRU/SRXU. The RRU/SRXU should be powered off ifyou need to move the equipment or anticipate a territorial blackout or if there is an emergencysuch as fire hazard, smoke, or water immersion.

4.2.1 Powering On the RRU/SRXUThis describes how to power on the RRU/SRXU. The RRU, supplied with -48 V DC power,feeds power to the SRXU through a power cable. During power-on, you need to check the statusof the LEDs on the RRU/SRXU.

4 Maintaining RRU and SRXU HardwareRRU

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Prerequisite

The input voltage to the RRU stays within the range of -37 V DC to -60 V DC.

Procedure

Step 1 Turn on the power switch of the external power supply to the RRU/SRXU.

Step 2 Check the status of the LEDs on the cabling cavity of the RRU. Table 4-2 describes the LEDsand their status.






0.5s ON, 0.5sOFF


ALM Red ON The module is reporting alarms(excluding VSWR related alarms).


Step 3 Check the status of the LEDs on the cabling cavity of the SRXU. Table 4-3 describes the LEDsand their status.






0.5s ON, 0.5sOFF


ALM Red ON The module is reporting alarms(excluding VSWR-related alarms).




4-3

Step 4 Perform the next step based on the status of the LEDs.

If... Then...

The RRU/SRXU is operational, End the power-on task.

The RRU/SRXU is faulty, Clear the fault, and then go to Step 1.

----End

4.2.2 Powering Off the RRU/SRXUThis describes how to power off the RRU/SRXU. The RRU/SRXU should be powered off ifyou need to move the equipment or anticipate a territorial blackout or if there is an emergencysuch as fire hazard, smoke, or water immersion.

Procedure

Turn off the power switch of the external power supply to the RRU/SRXU.

----End

4.3 Replacing an RRUThis describes how to replace an RRU. The RRU, a remote radio unit, forms a distributed NodeBsystem with the BBU. Replacing an RRU disrupts all the services carried by the RRU.

Prerequisitel The quantity and models of the faulty RRUs are checked, and new RRUs are ready.

l The installation position of each RRU is recorded.

l The position of each screw on the RRUs is recorded.

l The connections of each RRU cable are recorded.

l The tool kit is ready.

Context

It takes about 30 minutes to replace an RRU. The time includes what is spent in disconnectingthe cables from the faulty RRU, connecting the cables to the new RRU, and resuming theservices.

CAUTIONWear an ESD wrist strap or a pair of ESD gloves when performing the operations to prevent thepossible damage to the board, module, or electrical parts caused by the ESD.


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Procedure

Step 1 Remove the housing of the RRU.

NOTE

l If no SRXU is fixed to the faulty RRU, you do not need to remove the housing.

l If an SRXU is fixed to the faulty RRU, you need to remove the housing and then the SRXU. For details,refer to 4.4 Replacing an SRXU.

Step 2 Power off the RRU. For details, refer to 4.2.2 Powering Off the RRU/SRXU.

Step 3 Disconnect all the cables from the faulty RRU and take appropriate insulation measures for thecables.

Step 4 Remove the two screws M6 x 20 at the bottom of the mounting plate, as shown in Figure 4-1.

Figure 4-1 Removing the screws at the bottom of the mounting plate

Step 5 Unhitch the RRU from the mounting plate.

Step 6 Remove the three screws M6 x 20 that fasten the attachment plate.

Step 7 Take out a new SRXU.

Step 8 Use the three screws M6 x 20 to secure the attachment plate to the new RRU.

Step 9 Hitch the RRU onto the mounting plate.

Step 10 Use the two screws M6 x 20 to secure the RRU to the mounting plate.



4-5

Step 11 Connect all the cables to the new RRU.

NOTE

If the SRXU is fixed to the RRU, you also need to install the SRXU. For details, refer to 3.6 Installing theSRXU. Then, connect all the cables to the new RRU.

Step 12 Power on the RRU. For details, refer to 4.2.1 Powering On the RRU/SRXU.

Step 13 Install the housing of the RRU. This step is required only if an SRXU used to be fixed to thefaulty RRU.

----End

PostrequisiteCheck the following items after replacing the faulty RRU:l The new RRU is properly installed.

l All the cables on the new RRU are properly connected.

l Each screw on the new RRU is in the correct position and is tightened.

l The new RRU is functional after being powered on.

Contact the local Huawei office to handle the faulty RRU.

4.4 Replacing an SRXUThis describes how to replace an SRXU. The SRXU is a remote radio unit that is used for capacityexpansion of the carriers. It forms a distributed NodeB system with other modules such as RRUand BBU. Replacing an SRXU disrupts all the services carried by the SRXU and thecorresponding RRU.

Prerequisitel The quantity and models of the faulty SRXUs are checked, and new SRXUs are ready.

l The installation position of each SRXU is recorded.

l The position of each screw on the SRXUs is recorded.

l The connections of each SRXU cable are recorded.

l The tool kit is ready.

ContextIt takes about 30 minutes to replace an SRXU. The time includes what is spent in disconnectingthe cables from the faulty SRXU, connecting the cables to the new SRXU, and resuming theservices.


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CAUTIONl Power off the SRXU and corresponding RRU before replacing the SRXU. Otherwise, the

RRU or SRXU may be burnt.l Wear an ESD wrist strap or a pair of ESD gloves when performing the operations to prevent

the possible damage to the board, module, or electrical parts caused by the ESD.

Procedure

Step 1 Remove the plastic housing.

Step 2 Power off the SRXU. For details, refer to 4.2.2 Powering Off the RRU/SRXU.

Step 3 Disconnect all the cables from the faulty SRXU and take appropriate insulation measures forthe cables.

Step 4 Remove the two screws M6 x 20 at the bottom of the SRXU, as shown in Figure 4-2.

Figure 4-2 Removing the screws at the bottom of the SRXU

Step 5 Separate the SRXU from the RRU.

Step 6 Take out a new SRXU.

Step 7 Install the new SRXU in its original position.

Step 8 Use the two screws M6 x 20 to secure the SRXU to the RRU.

Step 9 Connect all the cables to the new SRXU.



4-7

Step 10 Power on the SRXU. For details, refer to 4.2.1 Powering On the RRU/SRXU.

Step 11 Install the housing.

----End

PostrequisiteCheck the following items after replacing the faulty SRXU:

l The new SRXU is properly installed.

l All the cables on the new SRXU are properly connected.

l Each screw on the new SRXU is in the correct position and is tightened.

l The new SRXU is functional after being powered on.

Contact the local Huawei office to handle the faulty SRXU.

4.5 Replacing an Optical ModuleThis describes how to replace an optical module. The optical module provides the interface foroptical-electrical conversion, thus enabling transmission through optical cables between theBBU and other devices. You need to disconnect the optical cables when replacing the faultyoptical module. Therefore, services on the optical cables are disrupted during the replacement.

Prerequisitel The quantity and models of the faulty optical modules are checked, and new optical modules

are ready.

l The connections of the faulty optical module and the associated optical cable are recorded.

l The ESD wrist strap or gloves and ESD box or bag are ready.

Context

Optical modules are installed in ports CPRI0 through CPRI2 on the WBBP.

Optical modules are hot swappable.

It takes about five minutes to replace an optical module. The time covers the activities ofdisconnecting the optical cable, removing the faulty optical module, inserting a new opticalmodule, and connecting the optical cable to the new optical module, and recovery of the CPRIlinks.

CAUTIONl Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of

ESD gloves, to prevent electrostatic hazard to the board, module, or electrical parts.

l Do not look directly at the optical module after removing the connector of the optical cablefrom the optical module.


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Procedure

Step 1 Press the latch on the connector of the optical cable. Then, pull the connector out of the faultyoptical module.

Step 2 Turn the ring on the faulty optical module outwards. Then, hold the ring and take the faultyoptical module out of the port. Remove the optical module from the BBU.

Step 3 Install a new optical module in the BBU.

Step 4 Remove the dustproof caps from the optical module and from the connector on the optical cable.Connect the optical cable to the optical module.

Step 5 On the LMT, check whether the CPRI links are recovered by viewing the color of the WBBPaicon.

If... Then...

The WBBPa icon is green, The CPRI links are recovered and the opticalmodule is replaced successfully.

The WBBPa icon is of another color, The CPRI links are not recovered. Checkwhether the optical module and the opticalcable are securely connected to the WBBPa.

----End

PostrequisiteContact the local Huawei office to handle the faulty optical module.



4-9

Index

Aappearance

RRU, 2-2SRXU, 2-7

Ccable

AISG extension cable, 2-14, 2-22AISG multi-wire cable, 2-13, 2-21antenna jumper, 2-16, 2-24interconnect jumper, 2-16, 2-25RRU

alarm cable, 2-18PGND cable, 2-11power cable, 2-11

SRXUPGND cable, 2-20power cable, 2-20

cablingspecification, 3-11

connection of cablemultiple RRU with SRXU, 3-19multiple RRU without SRXU, 3-19one RRU with SRXU, 3-19one RRU without SRXU, 3-19

Eequipment maintenance item, 4-2

Iinstallation mode

one RRU, 3-3one RRU and one SRXU, 3-3three RRUs, 3-3two RRUs, 3-3two RRUs and two SRXUs, 3-3

installing cableAISG extension cable, 3-114AISG multi-wire cable, 3-113alarm cable, 3-112

CPRI optical cable, 3-108PGND, 3-98RF jumper, 3-106

installing housing, 3-120installing mounting plate

on the metal polethree RRUs, 3-58two RRUs, 3-43

on the wallsingle RRU, 3-35three RRUs, 3-63two RRUs, 3-48

installing procedure, 3-26installing RRU

single module, 3-39three modules, 3-67two modules, 3-50

installing RRU on towerassembling, 3-75

installing SRXUon sinple RRU, 3-84on three RRUs, 3-94on two RRUs, 3-87

LLED

RRU, 2-3SRXU, 2-7

Ppanel

RRU, 2-4SRXU, 2-8

powering off, 4-4powering on, 3-118, 4-2preparing for installing

tool and instrument, 3-29unpacking, 3-27

Rreplacing RRU, 4-4

RRUUser Guide Index


i-1

replacing SRXU, 4-6RF cable connection, 2-17, 2-25

Sspace requirement, 3-7specification

cabling, 3-11

IndexRRU

User Guide

i-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 03 (2008-04-30)

rru user guide(v200_03)

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