TMA USER MANUAL

ACTION TECHNOLOGIES CO., LIMITED

CONTENTS

1. How to Use this Manual ................................................................................................................... 5

1.1 Introduction .................................................................................................................................................. 5

1.3 Prior to Installation ....................................................................................................................................... 5

2. Product Description / Operation ...................................................................................................... 6

2.1 Introduction .................................................................................................................................................. 6

2.2 TMA DESCRIPTION ........................................................................................................................................ 7

2.3 TMA BLOCK DIAGRAM .................................................................................................................................. 8

3. Installation & Commissioning ......................................................................................................... 11

3.1 Installation Instruction ................................................................................................................................ 11

3.2 Commissioning Instruction .......................................................................................................................... 13

3.2.1 PDU ............................................................................................................................................... 13

3.2.2Bias Tee ......................................................................................................................................... 15

3.2.3Adjust gain of TMA ........................................................................................................................ 16

3.3 Safety .......................................................................................................................................................... 18

3.3.1 Commencement of Work ............................................................................................................. 18

3.3.2 Supervision ................................................................................................................................... 18

4.Service after Sale ............................................................................................................................. 19

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1. HOW TO USE THIS MANUAL

1.1 INTRODUCTION

It is recommended that you read this manual prior to installing and using the TMA. This manual gives you a

complete guide for how to mount, operate the product, the installation engineers of Operator and other

personnel concerned.

1.3 PRIOR TO INSTALLATION

A thorough study of the site conditions and transmission path requirements should be undertaken prior to

installing the repeater system. The location of antennas, repeater and cable lengths are all important

considerations that must be addressed.

The repeater has been designed for simple easy installation requiring no special tools. With just a few site

preparation tasks out of the way, installation can be accomplished in several hours.

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Copyright Information

Without written permission, no part of this document may be reproduced, transmitted, or translated in any

form, by any means or for any purpose.

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2. PRODUCT DESCRIPTION / OPERATION

2.1 INTRODUCTION

This chapter provides an overall description and operation of the repeater system. This system may be used to

address Network Coverage Enhancements such as those required by Cellular Network Operators.

Tower Mounted Amplifier System TMA is used to amplify uplink signal and improve the uplink sensitivity of

BTS. The TMA system is made up of three main components:

TMA: A Low Noise Amplifier(LNA), which is mounted close to the antenna, with bypass switch

Bias Tee: A device used to inject of DC current on the RF cable

PDC: A power distribution device that provides power and alarm handling for TMA

The following figure is a typical TMA deployment example.

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2.2 TMA DESCRIPTION

The tower mounted amplifier is designed for use with vertical or cross-pole antenna. The unit is

installed near the antenna at the tower top to improve receiver sensitivity of the base station. The

employment of TMA will result in an increase of successful call attempts, reduction of call drops,

maximized data transmission rate, improved call quality and extended handset talk time. Quality

improvements will lead to increased traffic volume and user satisfaction, hence increasing network

revenue. It is recommended for use in new network roll-outs to minimize base station count, or for

upgrading of existing base stations to improve signal quality and drop call performance.

The TMA comprises of high quality band-pass filters, a pair of balanced low noise amplifiers (LNA),

bias tee, lightning protection and by-pass circuitries. The LNA bypass circuitry is activated when the DC

supply is switched off or when there is a fault in the system.

Power is supplied via external bias tees that connect between the TMA and the PDU. Each PDU is

constructed into a 19” 1U form factor, and can provide power for single TMA or three units of TMA.

Main features of TMA are shown as below:

Balanced LNA design and power failure bypass for high reliability

Alarm management: DC current load simulation

Light weight and compact design

Salt spray resistance, IP67

Built-in lightning protection and vented enclosure design

EMP protection with excellent MTBF

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2.3 TMA BLOCK DIAGRAM

It shows the system block diagrams of dual duplex TMA respectively. Feeder cable is connected at the ‘BTS’

port of the TMA to the BTS via a bias tee and the antenna is connected to the ‘ANT’ port. For dual duplex

TMA, one bias tee is needed for each feeder cable connected to the ‘BTS’ port. Downlink and uplink signals

transmitted through the TMA are separated by filters. The uplink signal is amplified by a pair of balanced LNA

while the downlink signal takes the TX path without amplification.

In the event of DC power or LNA failure, the RF bypass will be activated to provide an alternate path for

uplink signal back to the BTS.

Figure 2 - 1 System block diagram of dual duplex TMA

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To Antenna To Antenna

Bias TeeBias Tee

Alarm To BTS

BTSPDU

+16V

Figure 2 - 2 Typical Application Diagram

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Figure 2 - 3 TYPICAL CONFIGURATIONS FOR THREE SECTORS TMA CELL

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3. INSTALLATION & COMMISSIONING

3.1 INSTALLATION INSTRUCTION

Please follow the steps below to install the TMA:

Mounting Bracket

Clamp

Pole

Figure 3- 1 pole mounting of TMA

Choosing the position on the tower to fasten the TMA tightly.

Connecting the existing feeder cable from BTS to the “BTS” port of TMA via RF jumper cable.

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Connecting the “ANT” port of TMA to the existing antenna of BTS via RF jumper cables.

Checking if the RF feeder cables are securely and correctly connected.

Applying electrical tape, mastic rubber and waterproof tape on the connectors exposed

Mount the PDU to the 19″ rack or cabinet, using two bolts on each side to secure the installation, as

shown in the following figure.

Connecting the power supply cable to each Bias Tee from PDU.

Figure 3- 2 mounting of PDU

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3.2 COMMISSIONING INSTRUCTION

3.2.1 PDU

The 1 or 2 or 3pcs PDU can be installed into one case based on needs. And the case can be installed in 19’’rack.

When boot time, the PDU will self-check, all of LED indicators will light on, and it will take about 10 seconds;

Figure 3- 3 Front view of PDU

LED indicator Descriptions

Power

This green LED is used to indicate whether the DC supply voltage is normal or not.

On = Normal; Off = Abnormal

Normal

This green LED is used to indicate whether working status is normal or not.

Blinking=Normal;Off=Abnormal

Bypass

This red LED is used to indicate that the PDU is working or bypass

On=Bypass;Off=Working

Open

This red LED is used to indicate whether DC output port(AISG PORT) is connected to

load(TMA)

On=Not connected to load (TMA) or TMA bypass ; Off=Connected to load (TMA)

Short

This red LED is used to indicate whether DC output port is short circuit or normal.

On= Short circuit; Off=Normal

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AISG port of PDU connecting to Bias Tee is for DC power supply, when the “Manual Switch” is at “bypass” side,

it means DC power for TMA is cut off; so the “Manual Switch” is at “WORK” side by default.

DC power supply Alarm Port Manual Swtich Ground point

AISG port

Pin1 Pin2 Pin3-48v Gronud

Figure 3- 4 Back view of PDU

Alarm Port Descriptions

Pin 1 Not used

Pin 2& Pin 3

This two-pin connector connects to the normally

opened terminal of the alarm connector on the BTS.

Alarm is sent to the BTS by means of relay closure,

this occurs when PDU is open or short

AISG Port(DC Output) 1X8Pin female connector

Pin1 16V DC

Pin2&Pin4&Pin6& Pin8 Not used

Pin3 RS485 B

Pin5 RS485 A

Pin7 DC Return

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3.2.2BIAS TEE

The PDU is connected to the Bias Tee using the Date cable. The cable has a 8-pin connector on one end that

connects to the ‘AISG’ connector on the PDU, and the other end, a ‘AISG’ connector, that connects to the Bias

Tee.

Port 1 7-16 Female(connect to BTS)

Port 2 7-16 Male(connect to antenna)

AISG Connector Male

Frequency Range 698-2700MHz

Figure 3- 5 Bias Tee

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3.2.3ADJUST GAIN OF TMA

Install Protable Control in the Unit folder "HabilisPSetup" Software from CD:

Connent the TMA to protable control unit by data cable,then click on search button after TMA

connected, TMA directory will be connected under the TMA row, then double-click the TMA.

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Then will pop-up dialog box, click “Get Gain” to get the current gain ;

Select gain from “Current Gain” pull-down menu according to requirements, and finally click Set Gain.

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3.3 SAFETY

Working on tower is potentially hazardous for person whether directly or indirectly involved in the work.

Having a safety guidelines or procedure can minimize or eliminate these hazards. With this, we considered the

below mentioned requirements before actual implementation, they are as follows:

Thorough planning

Strict supervision

Personal fitness of workers

Right tools and safety gadgets

3.3.1 COMMENCEMENT OF WORK

In majority, work on Tower site will be on the property not owned by the Cellular Operators; mostly it is

located in vacant lot near residential areas or building rooftops. With this, it is necessary for the team that will

be involved in the project to conduct a survey to make a detailed planning prior to actual work

commencement.

3.3.2 SUPERVISION

Strict supervision by the Project Team Leader / Supervisor must be executed for the safety of those people

who climb the tower. It is the responsibility of the Team Leader/Supervisor to make sure that all safety

measures are taken before and during work activity.

Persons involved in climbing tower must be aware that once climbing has commenced, there are changes like

wind velocity. Working on tower and high level requires a level of physical fitness and working on this must

be voluntary.

Factors to be considered that may stop the workers or not proceed in climbing towers:

Tower construction is not completed

Tower is not earthed

Wet paint

Rain

Risk of lightning

High winds

Poor visibility

If personnel are already working on tower, they must be alert for any sudden change in weather conditions. If

sudden change in weather is encountered, personnel working must stop and descend immediately.

4.SERVICE AFTER SALE

Your satisfaction is our priority. Offering a quick and effective technical support, we always put the

customer first. Please don’t hesitate to contact us by the following ways if you have any questions.

ACTION TECHNOLOGIES CO., LIMITED

Address: 3/F, Lifeng Building, 42# of Liuxian 1st Road ,Bao’an 71st District ,Shenzhen,China

Tel: +86-755-86023910, 26466353

Fax: +86-755-26495994

E-mail: actiontek@gmail.com

Website: www.action-intl.com

TMA User Manual

Edition 1.0 (July 2014)

ACTION TECHNOLOGIES CO., LIMITED

All rights reserved.

Information in this manual is subject to change without prior notice