flexi wcdma bts system module.pdf

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Flexi WCDMA BTS System Module

Description

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# Nokia Siemens Networks 1 (44)

471449A.505

Nokia Flexi WCDMA Base Station, Rel. Flexi

WBTS4.0, Product Documentation, v.2


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The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This documentation is intended for theuse of Nokia Siemens Networks customers only for the purposes of the agreement under whichthe document is submitted, and no part of it may be used, reproduced, modified or transmitted inany form or means without the prior written permission of Nokia Siemens Networks. Thedocumentation has been prepared to be used by professional and properly trained personnel,and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomescustomer comments as part of the process of continuous development and improvement of thedocumentation.

The information or statements given in this documentation concerning the suitability, capacity, orperformance of the mentioned hardware or software products are given as is and all liabilityarising in connection with such hardware or software products shall be defined conclusively andfinally in a separate agreement between Nokia Siemens Networks and the customer. However,Nokia Siemens Networks has made all reasonable efforts to ensure that the instructionscontained in the document are adequate and free of material errors and omissions. NokiaSiemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which

may not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NOEVENT WILL NOKIA SIEMENS NETWORKS BE LIABLE FOR ERRORS IN THISDOCUMENTATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL,DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUTNOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESSOPPORTUNITY OR DATA, THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THEINFORMATION IN IT.

This documentation and the product it describes are considered protected by copyrights andother intellectual property rights according to the applicable laws.

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Other product names mentioned in this document may be trademarks of their respective owners,and they are mentioned for identification purposes only.

Copyright Nokia Siemens Networks 2008. All rights reserved.

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Flexi WCDMA BTS System Module Description


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Contents

Contents 3

1 Summary of changes in Flexi WCDMA BTS System ModuleDescription 5

2 System Module operation and main blocks 72.1 Operation 72.2 Functional blocks 10

3 Power requirements of the System Module and transmission sub-modules 19

3.1 Power requirements of the System Module 193.2 Power requirements of transmission sub-modules 20

4 System Module dimensions and weight 21

5 System Module interfaces 23

6 System Module LED indications 39

7 System Module as an extension module 417.1 System Module as an extension module 417.2 FPFA interfaces 42

7.3 FPFA electrical connections 44

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1 Summary of changes in Flexi WCDMABTS System Module Description

Changes between issues 4-0 and 5-0

Editorial changes made.

Changes between issues 3-0 and 4-0

Section System Module operation and main blocks updated with

information on the FTJA transmission sub-module and transmission

cables. The picture of FTOA updated and a figure of the System Module

type label location added.

SectionPower requirements of the System Module and transmission sub-modulesupdated with information on power requirements of transmission

sub-modules and the power consumption of the FSMB and System

Extension Module.

Section System Module interfaces updated with information on System

Module connectors. Connector pin maps and figures of connectors added.

SectionSystem Module LED indications updated the LED indications table

and the LED positions figure.

Section FPFA interfaces added.

Section FPFA electrical connections added.

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Description


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2 System Module operation and mainblocks

2.1 Operation

The Flexi System Module hosts the telecom control, system operation and

maintenance, baseband application, transmission, and power distribution

functionality. The System Module can also act as a System Extension

Module operating in a baseband extension mode.

The System Module provides the following BTS external interfaces:

.

BTS Site Element Manager

. external interfaces towards the RNC (Iub)

. three external interfaces towards RF

. site support system interface (for example, battery back-up)

. auxiliarity interface (customer-specific 10/100 Mbps Ethernet port

with overvoltage protection)

. auxiliarity interface 1 Gbps Ethernet for future expansions

. external alarms and controls interface (customer-specific alarms)

. external synchronisation input interface

. external synchronisation output interface

The System Module has an integrated BTS clock that distributes the

synchronisation clocks to other BTS modules. The System Module

hardware is HSDPA and HSUPA compliant.

The System Module uses nominal 48 V DC and distributes it on to RF and

System Extension Modules. The System Module includes integrated fans.

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The System Module can be used, for example, for the following software

functionalities:

. BTS level O&M processing (BTSOM)

. resource management

. node B server

. NBAP handler

. user plane management

See the following figure for an exploded view of the System Module.


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Figure 1. Exploded view of the System Module

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Figure 2. Type label location of the System Module

2.2 Functional blocks

See the following figure for the functional blocks of the System Module.

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Figure 3. Functional blocks of the System Module

Ext IFblock

Fan Fan Module

heater

Tempsensors

1-8

Control block

andTiming block

BBprocessing

&RP3

transcodingblock

BBprocessing

&RP3

transcodingblock

BBprocessing

&RP3

transcodingblock

Multiplexing&Summing and RF IF blockEthernet switching

PowerDistribution

block

Transmissionsub-module

(FTxx)

BB ExtensionIF blocks

ControlClockRP1+RP2 DataRP3 Data

Legend:

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-48 V DC

TRS IF

-48 V DC,48RTN

Ext IF

RF IF

BB Ext IF

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Flexi WCDMA BTS control and multiplexing

This functionality is responsible for BTS control and management, system

clock generation and distribution to other modules and sub-modules. The

functional distribution of this functionality is as follows:

. Control MCU and clock generation: This includes the NBAP

termination, telecom and overall BTS control functionality, system

O&M functionality, external site support system and other equipment

control. It generates system reference clock and frequency

reference for synchronising with other BTS.

. External interface block: This block facilitates the external interface

for external equipment control.

. Summing and multiplexing functionality: This functional block is used

for data routing between the radio modules and the baseband.

. RF Module interface: This logical functional block is responsible for

providing output/input interface to or from a maximum of three RF

Modules.

. Baseband extension interface: This logical functional block is

responsible for providing output/input interface to or from the System

Extension Module.

Flexi WCDMA BTS signal processing

The Flexi Signal Processor terminates the Iub user plane and is

responsible for L1 processing of the air interface.

Flexi WCDMA BTS transmission sub-module (FTxx)

The transmission sub-module supports the following functionalities:

. ATM over E1/T1/JT1

.

ATM over STM-1. ATM over Ethernet

. Inverse Multiplexing ATM (IMA)

. Synchronisation

. Iub terminations

. Common NBAP and Dedicated NBAP

. AAL2 Signaling and AAL2 User Paths

. Operation and Maintenance (DCN)


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. Iu-PS Control Plane and Iu-PS User Plane

. Iur Control Plane and Iur User Plane

. IP functionalities (DHCP, routing, NTP, packet filtering)

. Transport performance counters

Different variants of the transmission sub-module in the System Module

are supported in order to provide different interface types in the Flexi

WCDMA BTS. Transmission sub-modules (FTxx) provide the physical Iub

interface to the radio network controller (RNC). Transmission sub-module

variants and their functions are listed in the following table.

Table 1. Transmission sub-module variants and their functions

Variant Function

FTPB Provides eight PDH symmetrical

interfaces configurable as E1, T1, or JT1.

FTEB Provides eight PDH coaxial interfaces E1.

FTFA Provides two Nokia FlexBus interfaces.

FTIA Provides four PDH symmetrical interfaces

configurable as E1, T1, or JT1 and two

Ethernet interfaces + one Gigabit

Ethernet. 1)

FTOA Provides one optical STM-1 interface

FTJA Provides four PDH coaxial interfaces E1

and two Ethernet interfaces + one Gigabit

Ethernet.

1) Gigabit Ethernet requires additional hardware (Small Form-factor

Pluggable, SFP transceiver).

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Figure 4. Transmission sub-module FTPB

Figure 5. Transmission sub-module FTEB

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Figure 6. Transmission sub-module FTFA

Figure 7. Transmission sub-module FTIA

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Figure 8. Transmission sub-module FTOA

Figure 9. Transmission sub-module FTJA

See the following table for listing of outdoor transmission cables used for

Flexi WCDMA BTS transmission sub-module (FTxx).

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Table 2. Outdoor transmission cables

Transmission cable Type Resistance

[ohm]

Length

FTCA OD Cable

RJ48C-TQ-M/0

120 ohm 5m

FTCB OD Cable

RJ48C

120 ohm 15m

FTCD OD Cable

SMB-F/0-BT43-F/0

75 ohm 5m

FTCE OD Cable

SMB-F/0

75 ohm 15m

FTCH OD Cable

LC SM

50 ohm

1310 nm

15m

FTCJ OD Cable

TNC-F/0-TNC M/0

50 ohm 2.5m

FTCR OD Cable

RJ 45 CAT5E

100ohm 15m

FTCV OD Cable

RJ48C

120 ohm 30m

FTCX OD Cable

RJ48C

120 ohm 50m

FTCF OD Cable

SMB-F/0

75 ohm 30m

FTCG OD Cable

SMB-F/0

75 ohm 50m

FTCS OD Cable

RJ 45 CAT5E

100 ohm 30m

FTCT OD Cable

RJ 45 CAT5E

100 ohm 50m

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3 Power requirements of the SystemModule and transmission sub-modules

3.1 Power requirements of the System Module

The power supply of the System Module (FSMB) is described in the table

below. The same power consumption figures also apply for the System

Extension Module.

Table 3. Power consumption of the FSMB (not including transmission) and

System Extension Module

Property Value

Max. 170 W*

Typical 106 W

Min. 90 W

Nominal supply voltage 48 V DC**

Input voltage range 40.5 - 57 V DC**

*During cold start-up

**Operational power consumption at room temperature.

The fuse rate for the System Extension Module is 25A.

For transmission sub-module power consumption figures, see section

Power requirements of transmission sub-modules.

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3.2 Power requirements of transmission sub-modules

The typical power consumption of the transmission sub-modules is

described in the table below.

Table 4. Power consumption of the transmission sub-modules

Variant Typical power consumption [W]

FTPB 22.3 W

FTEB 22.3 W

FTFA 89.7 W

FTIA 22.8 W

FTOA 22.8 W

FTJA 22.8 W

Power consumption depends on the equipment connected to the FTFA

sub-module.


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4 System Module dimensions and weightThe table below lists the dimensions and weight of the System Module.

Table 5. Dimensions and weight of the System Module

Property Value

Height 133 mm / 3U

(5.2 in.)

Width 447 mm

(17.6 in.)

Depth without covers 422 mm

(16.6 in.)

Depth with covers 560 mm

(22 in.)

Weight (without transmission sub-module) max 18 kg

(39.8 lbs)

Table 6. Dimensions and weight of the transmission sub-modules.

Property Value

Height 41 mm

(1.6 in.)

Width 245 mm

(9.7 in.)

Depth 308 mm

(12.1 in.)

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Table 6. Dimensions and weight of the transmission sub-modules. (cont.)

Property Value

Weight max. 4 kg

(8.8 lbs)

Warning

The module is heavy. Take care when lifting the module.


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5 System Module interfacesThe System Module is equipped with the following interfaces:

. Front panel connectors

. DC input connector (in the centre of the module)

The System Module has 24 connectors on the module. The connectors,

their types and purposes are listed in the table below. The System Module

is connected to the System Extension Module with a DC cable and two

optical cables.

Table 7. System Module connectors

Connector Type Purpose

Power supply RF module 1 Multi-beam XL power supply

connector

Power delivery to RF1. Fuse

rating 20A.


connector


rating 20A.


connector


rating 20A. Recommended

for I-HSPA use. Can be used

for GPS mediator (FSEG).

Power supply System Extension

Module operating in BB-ext

mode

Multi-beam XL power supply

connector

Power delivery to System

Extension Module operating

in BB-ext mode and to the

main fuse for System

Modules. Fuse rating 25A.

Can be used for I-HSPA and

GPS mediator (FSEG).

Transmission interfaces 8 x RJ-48/16 x SMB/2 x TNC/1 x

duplex LC connector

2 x RJ-45 connector

1x GE via SFP transceiver

Variable transmission

interfaces

10/100 Eth RJ-45 connector For local management tool

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Table 7. System Module connectors (cont.)

Connector Type Purpose

10/100 Eth FPMA RJ-45 connector Site support control over IP/

site support hard-wired

alarms

10/100 Eth OVP1) RJ-45 connector Control and location data

transfer

1000 Eth RJ-45 connector External transport equipment

interface (for future use)

EAC MDR36 connector External alarms and controls

Sync out MDR14 connector BTS synchronization outputinterface

Sync in MDR26 connector BTS synchronization input

interface (for external

sources)

OPT-RF 1 Duplex LC connector Interface for RF Module 1



OPT-EXT 1 Duplex LC connector System and baseband

extension interfaces

OPT-EXT 2 Duplex LC connector System and basebandextension interfaces

DC input TX25 screw terminals for 8

25 mm2 cable

Power feed

Grounding Screw M5 Grounding

1)The 10/100 Eth OVP cable fulfils overvoltage surge protection standard

GR-1089 Core Intrabuilding. The overvoltage protected OD fast Ethernet

cable is for indoor and outdoor usage.

For lightning surge requirements, see section Lightning surge

requirements in the Requirements for Flexi WCDMA BTS Installation and

Operationdocument.

The System Module front panel is illustrated in the following figure.


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Figure 10. Front panel of the System Module

For the location of LEDs, see the System Module LED indications.

The location of the DC input connector is illustrated in the following figure.

DN7080615

10/100 Eth

10/100 EthFPMA

10/100 EthOVP

1000 Eth

EACSyncIn

SyncOut

OPT-RF1

OPT-RF2

OPT-RF3

OPT-EXT1

OPT-EXT2

Power SupplyRF Module

1


2


3

Power SupplyBB-EXT Module

Grounding points

Extension Module/System Module

Circuit breakers

RF1 RF2 RF3

Transmissioninterfaces

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Figure 11. DC input connector in the System Module

System Module connector pin maps

The Sync in connector pin map is presented in the following table.

Table 8. External synchronization input interface connector (MDR26)

Pin Signal Pin Signal

1 PPS_in+ 14 GND

2 PPS_in- 15 nc

3 GPStime_in+ 16 GND

4 GPStime_in- 17 nc

5 reserved for future

use

18 GND


use


use

7 ExtRef2M_in 20 GND

8 nc 21 nc

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Table 8. External synchronization input interface connector (MDR26) (cont.)



use


use

10 nc 23 nc

11 GPS_control+ 24 GPS_control-


use


use

13 ExtRef10M_in 26 GND

Signal descriptions:

. PPS_in: Pulse Per Second (1Hz) frequency and time reference

(electrically RS-485)

. GPStime_in: GPS time reference, GPS receiver control in

(electrically RS-485

. 2M_out: 2,048 MHz system clock reference output (electrically

G.703)

. ExtRef2M_in: 2,048 MHz external frequency reference (electrically

ITU-T G.703)

. GPS_control: GPS receiver control out (electrically RS-485)

. TestWfclk_out: Programmable 100Hz, 50Hz, 25Hz or 12,5Hz

(+SFN0 pulse) system frame clock (electrically LVTTL) (GPS power

control in REL1)

. ExtRef10M_in: 10MHz external frequency reference (electrically

LVTTL)

See the following figure for the MDR26 connector.

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Figure 12. MRD26 connector

The Sync out connector pin map is presented in the following table.

Table 9. External synchronisation output interface connector (MDR14)


1 PPS_out+ 8 GND

2 PPS_out- 9 HARQ

3 GPStime_out+ 10 GND

4 GPStime_out- 11 Testclk_out


use

12 GND


use


use

7 2M_out 14 GND

Signal descriptions:

. 2M_out: 2.048 MHz clock reference output (ITU-T G.703/chapter 13)

. The signal comes from the Flexi transport part, which is locked

(PLL) to the Iub interface.

. The signal in MDR14 is asymmetric: connect the core of the

coaxial cable to pin 7 and cable shield to GND (e.g. pin 14).

. Testclk_out: 10MHz system clock (LVTTL)

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. The signal comes from BTS OCXO which is used for air I/F

generation => reference for the RF measurement equipment.. Note: the BTS OCXO is not in the PLL mode to the Iub, the

locking is very loose due to air I/F stability reasons.

. The signal in MDR14 is asymmetric: connect the core of the

coaxial cable to pin 11 and cable shield to GND (e.g. pin 10)

. GND: signal ground, for asymmetric signals

. PPS_out: Pulse Per Second (1Hz) frequency and time reference(electrically RS-485)

. GPStime_out: GPS time reference (electrically RS-485)

. TestWfclk_out: Programmable 100Hz, 50Hz, 25Hz or 12,5Hz(+SFN0 pulse) system frame clock (electrically LVTTL)

. HARQ: reserved signal for research and development testing

purposes

See the following figure for MDR 14 connector.

Figure 13. MDR14 connector

The Power supply RF module 1-3 connectors pin map is presented in the

following table.

Table 10. The Power supply RF module 1-3 connectors (4 X multi-beam)

Pin Signal

1 V48N

2 V48RTN

Pin 1

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Signal description (one out of four multi-beam connectors shown):

. V48#: 48VDC power supply

See the following figure for Multi-beam XL power supply connector

Figure 14. Multi-beam XL power supply connector

The 10/100 Eth connector pin map is presented in the following table.

Table 11. The 10/100 Eth connector (RJ45)

Pin Signal

1 RX+

2 RX-

3 TX+

4 GND

5 GND

6 TX-

7 GND

8 GND

Signal description:

. The signals of this connector are according to standard 100Base-TX

(IEEE 802.3) for MDI-X configuration.

See the following figure for RJ45 connector.

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Figure 15. RJ45

The 10/100 Eth FPMA connector pin map is presented in the following

table.

Table 12. The 10/100 Eth FPMA connector (RJ45)

Pin Signal

1 RX+

2 RX-

3 TX+

4 AL1

5 AL2

6 TX-

7 GND

8 GND

Singnal description:


(IEEE 802.3) for MDI-X configuration and as specified below:

. AL#: Site support alarm inputs 1-2 (electrically TTL)


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Figure 16. RJ45

The 10/100 Eth OVP connector pin map is presented in the following table

(RJ45).

Table 13. The 10/100 Eth OVP connector (RJ45)

Pin Signal

1 RX+

2 RX-

3 TX+

4 GND

5 GND

6 TX-

7 GND

8 GND

Signal description:




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Figure 17. RJ45

The 1000 Eth connector pin map is presented in the following table.

Table 14. The 1000 Eth connector (RJ45)

Pin Signal

1 BI_D2+

2 BI_D2-

3 BI_D1+

4 BI_D4+

5 BI_D4-

6 BI_D1-

7 BI_D3+

8 BI_D3-

Signal description:

. The signals of this connector are according to standard 1000Base-T



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Figure 18. RJ45

The EAC connector pin map is presented in the following table.

Table 15. The EAC connector (MDR36)


1 EXT_CO0 19 +5V

2 EXT_CO1 20 +5V

3 EXT_CO2 21 +5V

4 EXT_CO3 22 +5V

5 EXT_CO4 23 +5V

6 EXT_CO5 24 +5V

7 EXT_AL0 25 GND

8 EXT_AL1 26 GND

9 EXT_AL2 27 GND

10 EXT_AL3 28 GND

11 EXT_AL4 29 GND

12 EXT_AL5 30 GND

13 EXT_AL6 31 GND

14 EXT_AL7 32 GND

15 EXT_AL8 33 GND

16 EXT_AL9 34 GND

17 EXT_AL10 35 GND

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Table 15. The EAC connector (MDR36) (cont.)


18 EXT_AL11 36 GND

Signal description:

. EXT_CO#: BTS External control outputs 1-6 (electrically TTL)

. EXT_AL#: BTS External alarm inputs 1-12 (electrically TTL)

See the following figure for MDR36 connector.

Figure 19. MDR36

The DC input connector pin map is presented in the following table.

Table 16. The DC input connector (Terminal block)

Pin Signal

1 V48N2 V48RTN

Signal description:

. V48#: 48VDC power supply

The Grounding connector pin map is presented in the following table.

118

36

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Table 17. The Grounding connector (Screw terminal).

Signal Description L2/L3 Description L1 Description

Ground N/A GND

Table 18. E1/T1/JT1 symmetrical pin map RJ-48C

Pin Signal Wire colour

1 RX_Ring brown

2 RX_Tip yellow

3 RX_Shield

4 TX_Ring white

5 TX_Tip green

6 TX_Shield

7 nc

8 nc

See the following figure for the RJ-48C connector (same as RJ-45).

Figure 20. RJ-48C

The following connectors are optical fibre connectors, and therefore, have

no pin maps.

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. OPT-RF1

. OPT-RF2

. OPT-RF3

. OPT-EXT1

. OPT-EXT2

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6 System Module LED indicationsThe System Module has seven tri-colour LEDs on the front panel to

indicate the operational status of the module and all fault conditions duringoperation. See the following figure for the System Module LEDs.

Figure 21. System Module LED positions

The LED indications of the System Module are listed and explained in the

table below.

It is recommended that you read the information on the LED indications

carefully. A blinking red LED does not always require removing the

module.

FAN

SYSTEM MODULESTATUS

OPT-RF2 OPT-RF3

OPT-RF1 OPT-EXT1

OPT-EXT2

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Table 19. System Module LEDs (from left to right)

LED Colour

System Module status . Red:Module self-test or reset (LED red for < 5 seconds) or

major alarm or critical alarm

. Red, blinking:Minor alarm

. Yellow:Stand-by or blocked

. Yellow, blinking:SW download or configuration ongoing,

module non-operational

. Green:Module operational (the cell can be locked in the

RNC)

. Green, blinking: Module is loading software or parameters

or local maintenance access when modules are operational

Fan status . Red:Fan fault

. Green:Fan OK

RF Module 1 fiber connection status . Red:no connection

. Green:connection OK

. Yellow:not in use



. Yellow:not in use



. Yellow:not in use

System Extension Module 1 fiber

connection status

. Red:no connection


. Yellow:not in use

System Extension Module 2 fiber

connection status

. Red:no connection


. Yellow:not in use

Tip

You can inspect the state of all BTS or transmission-related alarms from

the LED on the transmission sub-module.

Note that the FTFA unit has two additional radio-specific LEDs on the front

panel.


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7 System Module as an extension module

7.1 System Module as an extension module

The System Module can be used as a System Extension Module operating

in a baseband extension mode to add channel capacity. In this case, it is

connected to the System Module by connecting two optical cables and a

DC cable. These items are provided with Flexi System Extension Kit

(FSKA).

When the System Module is used as a System Extension Module

operating in a baseband extension mode, a transmission sub-module is

not installed. Instead, a dummy transmission sub-module is installed to

provide IP protection. This item is also included in Flexi System ExtensionKit (FSKA).

When the System Module is used as a System Extension Module

operating in a baseband extension mode, external synchronisation input

connectors cannot be used. Synchronisation is provided by the System

Module. For installation instructions, see the Installing Optional Items

document. For commissioning instructions, see the Nokia Flexi WCDMA

BTS Commissioningdocument.

When integrating the System Extension Module to Flexi WCDMA BTS, no

commissioning is required. Once the System Extension Module has beenconnected to the System Module and powered up, the auto detection

functions of Flexi WCDMA BTS detect the System Extension Module and

connect the System Extension Module to the normal operation of the BTS.

As for software requirements, the auto detection requires that WN4.0 BTS

SW exists and is active both in the System Module and System Extension

Module to be connected to.

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The System Extension Module provides a basic capacity of 32 CE without

the channel capacity licence. Enabling more CE capacity of the SystemExtension module for service requires that the channel capacity licence

(RAN912 Channel Capasity LK) with sufficient capacity is downloaded to

the BTS.

7.2 FPFA interfaces

Power is distributed from Flexi Power Distribution and Fuses (FPFA) to the

transmission sub-modules in the System Module. See the following figure

for the location of the FPFA.

Figure 22. Location of the FPFA and transmission sub-module in the System

Module

There are two types of FPFAs available:

. A101 version

. A102, A103 or later

There are differences between these versions in the inner connections.

FPFA inputs and outputs

With all FPFA versions, always use busbar input connector (with screw

connection) for input connections of the FPFA and when connecting power

to the extension module.

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Type Label

Transmission sub-moduleFPFA


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The multibeam connectors in the front panel must not be used as input to

the FPFA. The multibeam connectors are not hot-plug connectors. Alwaysswitch off the power via the on/off switch on the FPFA front panel when

connecting or disconnecting the RF or Extension module to the FPFA.

Figure 23. FPFA interfaces

The above figure illustrates the System Module core version 101 and 102.

Please check the core version from the type label indicated in the previous

picture.

LED indications for RF1, RF2, RF3 and EXT

LEDs (4) on the front panel indicate the state of the circuit breakers (CB) if

load (for example the RF Module or the System Extension Module) isconnected to FPFA output. When lit, the LED is red.

LED on:

. Load connected to FPFA output and CB has tripped

. Load connected to FPFA output and CB switch pulled to off position

LED off:

RF1RF2

RF3EXT Connector to System Module

(located on the bottom)

DC input connector forSystem Module andExtension Module

DN70322858

Circuit breakers:RF1 RF2 RF3 Extension Module/System Module

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System Module as an extension module


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. Load not connected at all

. Load connected to FPFA output and the power supply is on (CB hasnot tripped)

7.3 FPFA electrical connections

Note that there is a risk of short circuit. Connect the power cable as

instructed.

FPFA version A101

Extension module power supply comes through the circuit breaker and

extension module power can be switched off via the circuit breaker. This

must be done if the extension module is connected to the System Module

to avoid hot-plug connection. This also required when disconnecting from

the System Module.

When pulling the EXT circuit breaker switch to off position, switch off the

power supply to the extension module. Power feed to the System Module

is still on.

FPFA version A102, A103 or later

FPFA versions A102, A103 or later have a common power supply via the

same circuit breaker for the System Module and the System Extension

Module. This means that the same circuit breaker switch can be used toswitch on and off the power to the System Module and the System

Extension Module.

By pulling the EXT circuit breaker on/off switch in the front panel, you can

reset the System Module and extension modules.

When connecting the extension module to the System Module, switch off

the circuit breaker to avoid hot-plug connection to extension modules.After that, switch off the System Module.

This is also required when disconnecting the extension module from the

System Module.


flexi wcdma bts system module.pdf

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