Bsc6910 Gsm Installation Guide(v100r015c00_03)(PDF)-En

BSC6910 GSM

V100R015C00

Installation Guide

Issue 03

Date 2013-07-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2013. 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 trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The 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 all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 03 (2013-07-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://www.huawei.com

mailto:[email protected]

About This Document

OverviewThis document describes how to install the BSC6910. The components to be installed includepower cables, PGND cables, boards, signal cables, cabinet fittings, the computer serving as thelocal maintenance terminal (LMT), and the alarm box. This document also describes how tocheck the installed hardware, constructing connectors for power cables and signal cables, andmaking and attaching engineering labels. Finally, this document provides requirements for theoperational environment of the equipment.

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

Product Name Product Version

BSC6910 V100R015C00

Intended AudienceThis document is intended for installation personnel.

Organization1 Changes in the BSC6910 GSM Installation Guide

This section describes the changes to the BSC6910 GSM Installation Guide.

2 Preparations for Installation Tools

The tools required for installing the BSC are tools for measuring, marking, drilling, andfastening, small tools, auxiliary tools, instruments, and special tools.

3 Installation Process

BSC6910 GSMInstallation Guide About This Document


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The BSC6910 installation process includes the installation of the cabinet and its fittings, powercables and PGND cables, EOMUa boards, signal cables, LMT computers, and alarm boxes.

4 Installing Power Cables and PGND Cables

This section describes how to install power cables between subracks and the PDF, PGND cablesbetween a cabinet and the PDF,and PGND cables between cabinets. For items and specificationsfor checking the installation of the power cables and PGND cables, see 11.1 Checklist forBSC6910 Cable Installation.

5 Checking and Setting DIP Switches on Subracks

This section describes how to check and set the DIP switch on a subrack. In general, subracksare installed in the cabinet before delivery.

6 Checking the Power-On Performance of Subracks

This section describes how to check the power supply to subracks, fan assembly, and boards.

7 Installing and Setting Boards

Most boards except the EOMUa/ESAUa boards are installed in subracks before the delivery.Install the EOMUa/ESAUa boards onsite.

8 Installing the Signal Cables

This chapter describes how to install the signal cables according to the layout requirements. Thesignal cables to be installed include clock signal cables, Ethernet cables and optical cables. Foritems and specifications for checking the installation of signal cables, see 11.1 Checklist forBSC6910 Cable Installation.

9 Installing the Alarm Box and the Computer Serving as the LMT

This section describes how to install an alarm box and a computer serving as the LMT. If youare installing the computer and the alarm box in the equipment room, you can install them alongwith the BSC6910 equipment. For items and specifications for checking the installation of theLMT computer and the alarm box, see 11.3 Checklist for the Installation of the LMTComputer and Alarm Box.

10 Attaching the Engineering Labels to the Cables

This chapter describes how to attach engineering labels to the power, PGND, and signal cablesafter the cables are installed

11 Checklist for the Hardware Installation

This chapter describes how to check the hardware installation. The hardware consists of cables,Local Maintenance Terminal (LMT) PC, and alarm box. In addition, you should check theinstallation environment.

12 Installation Illustrations

This chapter describes the exploded views of cabinet, cabinet assembly diagrams, and cableconnections of cabinets.

13 Installation Records

The table is used to record the BSC6910 hardware installation information.



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ConventionsSymbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related to personalinjury.

Calls attention to important information, best practices andtips.NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are inCourier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.



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Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.


Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare in boldface. For example, click OK.

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

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

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

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A meansthe two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.



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Action Description

Click Select and release the primary mouse button without movingthe pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

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



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Contents

About This Document.....................................................................................................................ii

1 Changes in the BSC6910 GSM Installation Guide.................................................................1

2 Preparations for Installation Tools............................................................................................3

3 Installation Process.......................................................................................................................5

4 Installing Power Cables and PGND Cables.............................................................................74.1 Power Cables and PGND Cables to Be Installed...........................................................................................................84.2 Connections of Power Cables and PGND Cables..........................................................................................................94.3 Principles for Installing Power Cables and PGND Cables...........................................................................................104.4 Installing Power Cables and PGND Cables Between a BSC6910 Cabinet and the PDF.............................................114.4.1 Installing Power Cables and PGND cable Between the BSC6910 and the PDF in Overhead Cabling Mode..........114.4.2 Installing Power Cables and PGND Cable Between the BSC6910 and the PDF in Underfloor Cabling Mode............................................................................................................................................................................................154.5 Installing the PGND Cables Between Adjacent Cabinets............................................................................................20

5 Checking and Setting DIP Switches on Subracks................................................................22

6 Checking the Power-On Performance of Subracks..............................................................27

7 Installing and Setting Boards....................................................................................................297.1 Safety Precautions for Board Installation.....................................................................................................................307.2 Installing the EOMUa/ESAUa Boards.........................................................................................................................30

8 Installing the Signal Cables......................................................................................................338.1 Signal Cables to Be Installed........................................................................................................................................358.2 Principles of Installing the Signal Cables.....................................................................................................................368.3 Installing the Clock Signal Cables................................................................................................................................418.3.1 Installing the Y-Shaped Clock Cables.......................................................................................................................418.3.2 Installing the BITS Clock Signal Cables...................................................................................................................438.4 Installing the Ethernet Cables.......................................................................................................................................458.4.1 Arranging the Ethernet Cables..................................................................................................................................468.4.2 Installing Ethernet Cables Between the EOMUa and the LAN................................................................................468.4.3 Installing the Ethernet Cables Between the ESAUa Board and the LAN.................................................................538.4.4 Installing the Ethernet Cables Between the FG2c/FG2d Board and the Other Equipment.......................................55

BSC6910 GSMInstallation Guide Contents


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8.5 Installing the Inter-SCUb SFP+ High-Speed Cables Between Different Subracks.....................................................568.6 Installing the Optical Cables.........................................................................................................................................608.6.1 Using the Accessories of the Optical Cable..............................................................................................................608.6.2 Arranging the Optical Cables....................................................................................................................................638.6.3 Installing the Optical Cables Between the EXOUa/GOUc/GOUd/POUc Boards and the Other Equipment...........648.7 Installing the EMU RS485 Communication Cables.....................................................................................................668.8 Connecting the GPS Surge Protector to the GCGa Board............................................................................................68

9 Installing the Alarm Box and the Computer Serving as the LMT.....................................739.1 Installing the Computer Serving as the LMT...............................................................................................................749.2 Installing the Alarm Box..............................................................................................................................................74

10 Attaching the Engineering Labels to the Cables.................................................................7610.1 Attaching the Engineering Labels to the Power Cables and PGND Cables...............................................................7710.2 Attaching the Engineering Labels to the Signal Cables.............................................................................................77

11 Checklist for the Hardware Installation...............................................................................8011.1 Checklist for BSC6910 Cable Installation..................................................................................................................8111.2 Checklist for the Installation of the BSC6910 GPS Antenna System........................................................................8111.3 Checklist for the Installation of the LMT Computer and Alarm Box........................................................................8111.4 Checklist for Field Cleanliness of BSC6910 Installation...........................................................................................81

12 Installation Illustrations...........................................................................................................8212.1 Components of a Cabinet...........................................................................................................................................8312.2 Cable Connections of the Cabinet..............................................................................................................................8412.2.1 Connections of Power Cables for the Subrack and PGND Cables for the Cabinet.................................................8412.2.2 Connections of Signal Cables for the MPR.............................................................................................................8612.2.3 Connections of Signal Cables for the EPR..............................................................................................................89

13 Installation Records..................................................................................................................92

BSC6910 GSMInstallation Guide Contents


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1 Changes in the BSC6910 GSM InstallationGuide

This section describes the changes to the BSC6910 GSM Installation Guide.

03 (2013-07-30)This is the third release of V100R015C00.

Compared with issue 02 (2013-06-25), this issue does not include new information.

Compared with issue 02 (2013-06-25), this issue includes the following changes:

Changes Change Description

8.7 Installing the EMU RS485Communication Cables

The description of reserved port ELU is adeedin Context and the picture Connections ofcables between the EMU and the PEM isoptimized.

8.4.2 Installing Ethernet Cables Betweenthe EOMUa and the LAN

The scenario for BSC6910 and ECO6910 areconfigured in different subracks in onecabinet is added.

Compared with issue 02 (2013-06-25), this issue does not exclude any topics.

02 (2013-06-25)This is the second release of V100R015C00.

Compared with issue 01 (2013-05-04), this issue does not include new information.

Compared with issue 01 (2013-05-04), this issue includes the following changes:

BSC6910 GSMInstallation Guide 1 Changes in the BSC6910 GSM Installation Guide


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8.7 Installing the EMURS485CommunicationCables

The description of EMU style is adeed in Context .

Compared with issue 01 (2013-05-04), this issue does not exclude any topics.

01 (2013-05-04)This is the first release of V100R015C00.

Compared issue with Draft A (2013-02-27), this issue does not include new information.

Compared issue with Draft A (2013-02-27), this issue includes the following changes:


7.2 Installing theEOMUa/ESAUaBoards

A description is adeed in Context .

Compared with issue Draft A (2013-02-27), this issue does not exclude any topics.

Draft A (2013-02-27)This is the Draft A release of V100R015C00.

BSC6910 GSMInstallation Guide 1 Changes in the BSC6910 GSM Installation Guide


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2 Preparations for Installation Tools

The tools required for installing the BSC are tools for measuring, marking, drilling, andfastening, small tools, auxiliary tools, instruments, and special tools.

NOTICEElectronic devices are prone to electrostatic discharge (ESD). Wear an ESD wrist strap correctlyand touch only the edges of the boards, especially when dealing with components such as boards.

Table 2-1 lists the tools required for installation.

Table 2-1 Tools required for installation

Common Tools Measuring tools Long measuring tape, ruler (1 m), angle square,industrial horizontal ruler, and plumb

Marking tools Marking pen or ink fountain

Drilling tools Percussion drill (Ф16 drill bit) and vacuum cleaner

Fastening tools M3-M6 straight screwdriversM3-M6 Phillips screwdriversAdjustable wrenchSocket wrenches M6, M8, M12, M14, M17, and M19Double offset ring wrenches M6, M8, M12, M14,M17, and M19Long-arm wrench

Small tools Sharp-nose pliers, diagonal pliers, pliers, hand-heldelectric drill, file, handsaw, crowbar, rubber hammer,and claw hammer

BSC6910 GSMInstallation Guide 2 Preparations for Installation Tools


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Auxiliary tools Tweezers, brush, bellows, paper knife, bellows,electric iron, solder wires, ladder, pallet truck, panellifter, heat gun, and electric outlet (with three 2-phasesockets and three 3-phase sockets, rated current higherthan 15 A)

Meters Earth resistance tester, Ethernet cable tester, multimeter, 500 Vmegohmmeter, optical multimeter, and optical power meter

Special tools ESD wrist strap, glove, cable peeler, clamp pincer, feeder cutter, SMBcrimping pliers, RJ-45 crimping pliers, and wire cutter

BSC6910 GSMInstallation Guide 2 Preparations for Installation Tools


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3 Installation Process

The BSC6910 installation process includes the installation of the cabinet and its fittings, powercables and PGND cables, EOMUa boards, signal cables, LMT computers, and alarm boxes.

Prerequisitesl The equipment has been unpacked and accepted.

l The tools required for the installation are available.

Procedure

Step 1 Install the cabinet and its fittings.

If... Then...

An N68E-22 cabinet is to be installed See the N68E-22 Cabinet Installation Guide fordetailed operations.

An N68E-21-N cabinet is to be installed See the N68E-21-N Cabinet Installation Guide fordetailed operations.

Step 2 Install power cables and PGND cables. For details, see 4 Installing Power Cables and PGNDCables.

Step 3 Check and Set the Subrack DIP Switch. For details, see 5 Checking and Setting DIP Switcheson Subracks.

Step 4 Check the Power-On Performance. For details, see 6 Checking the Power-On Performanceof Subracks.

Step 5 Install the EOMUa board. For details, see Installing the EOMUa Board.

Step 6 Optional: Install the ESAUa board. For details, see Installing the ESAUa Board.

Step 7 Install signal cables. For details, see 8 Installing the Signal Cables.

BSC6910 GSMInstallation Guide 3 Installation Process


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NOTE

The same method is used to install signal cables in both the N68E-22 and N68E-21-N cabinets. Thisdocument uses the N68E-22 cabinet as an example.

Step 8 Optional: Install the GPS antenna system. For details, see the GPS Satellite Antenna SystemQuick Installation Guide.

Step 9 Install the computer serving as the LMT and the alarm box. For details, see 9 Installing theAlarm Box and the Computer Serving as the LMT.

Step 10 Attach engineering labels to the cables. For details, see 10 Attaching the Engineering Labelsto the Cables.

Step 11 Check the installed hardware. For details, see 11 Checklist for the Hardware Installation.

----End

BSC6910 GSMInstallation Guide 3 Installation Process


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4 Installing Power Cables and PGND Cables

About This Chapter

This section describes how to install power cables between subracks and the PDF, PGND cablesbetween a cabinet and the PDF,and PGND cables between cabinets. For items and specificationsfor checking the installation of the power cables and PGND cables, see 11.1 Checklist forBSC6910 Cable Installation.

4.1 Power Cables and PGND Cables to Be InstalledPower cables and PGND cables to be installed include -48 V power cables for subracks, RTNpower cables for subracks, external PGND cables for cabinets, and inter-cabinet PGND cables.

4.2 Connections of Power Cables and PGND CablesThis section describes the connections of power cables and PGND cables between a BSC6910cabinet and the PDF and the connections of inter-cabinet PGND cables.

4.3 Principles for Installing Power Cables and PGND CablesThis section describes the principles for installing power cables and PGND cables. When youinstall power cables and PGND cables, follow the routing and binding principles.

4.4 Installing Power Cables and PGND Cables Between a BSC6910 Cabinet and the PDFThis section describes how to install power cables and PGND cables for BSC6910 cabinets inboth overhead cabling and underfloor cabling modes.

4.5 Installing the PGND Cables Between Adjacent CabinetsThis section describes how to connect the upper, middle, and lower parts of the PGND busbarof one cabinet to those of its adjacent cabinet through PGND cables. PGND cables need to beinstalled in adjacent cabinets only when they are installed in combined mode.

BSC6910 GSMInstallation Guide 4 Installing Power Cables and PGND Cables


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4.1 Power Cables and PGND Cables to Be InstalledPower cables and PGND cables to be installed include -48 V power cables for subracks, RTNpower cables for subracks, external PGND cables for cabinets, and inter-cabinet PGND cables.

Table 4-1 lists the power cables for each subrack and PGND cables for each cabinet.

Table 4-1 Power cables and PGND cables to be installed

Item Color Cross-Sectional Area(mm2)

AllowedBendingRadius(mm)

ConnectorType/Installation Position

ConnectorType/Installation Position

Number

-48 Vpowercable forthesubrack

Blue 25/35 30 OT terminal/NEG inputon the PEMin thesubrack

OTterminal/-48V output onthe PDF

4

RTNpowercable forthesubrack

Black 25/35 30 OT terminal/RTN inputon the PEMin thesubrack

OT terminal/RTN outputon the PDF

4

ExternalPGNDcable

Greenandyellow

25/35 30 OT terminal/PGND inputon thecabinet

OT terminal/PGNDoutput on thePDF

1

Inter-cabinetPGNDcable

Greenandyellow

6 15 OT terminal/PGNDbusbar in thecabinet

OT terminal/PGNDbusbar in thecabinet

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NOTE

The required length of power cables and PGND cables is specified in the site survey report. Cut anappropriate length of cables and crimp terminals onsite.

l The colors of power cables and PGND cables must meet the customer requirements. Table 4-1 listsonly their default colors.

l Whether to use one-hole OT terminals or two-hole OT terminals for power cables and PGND cablesis determined based on customer requirements. Table 1-2 lists the one-hole OT terminals.

l For details about power cables, see Power Cables. For details about PGND cables, see PGND Cables.

NOTE

To facilitate the crimping of OT terminals, crimp them on the ground with hydraulic pliers, and then placethem in the installation positions.



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NOTE

To facilitate the crimping of OT terminals, crimp them on the ground with hydraulic pliers, and then placethem in the installation positions.

4.2 Connections of Power Cables and PGND CablesThis section describes the connections of power cables and PGND cables between a BSC6910cabinet and the PDF and the connections of inter-cabinet PGND cables.

Figure 4-1 shows the connections of subrack power cables and cabinet PGND cables.

Figure 4-1 Connections of power cables and PGND cables

NOTE

In each cabinet, A1 and B1 form a pair of active and standby power supply ports, as do A3 and B3. Asshown in the preceding figure, to create a hot backup, connect ports A1 and A3 to one power supply groupin the PDF, and ports B1 and B3 to a different power supply group.



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NOTE

PEM 01 and PEM 00 work in active and standby mode. As shown in the preceding figure, to create a hotbackup, connect OUTPUT A and OUTPUT B to a different power supply group.

Circuit breakers used on the PDF must be larger than 60 A.

NOTE

Connect the PGND cables for a cabinet to the nearest ground bar. If the PDF is located a great distancefrom the cabinet (for example, they are not in the same equipment room), connect the PGND cables to thenearest ground bar that is co-grounded with the PDF instead of connecting them directly to the PDF. Inthis case, the methods of installing and routing PGND cables are the same as those of connecting PGNDcables directly to the PDF. In practice, PGND cables must be connected based on customer requirements.

4.3 Principles for Installing Power Cables and PGNDCables

This section describes the principles for installing power cables and PGND cables. When youinstall power cables and PGND cables, follow the routing and binding principles.

Minimum Bending Radius of Power Cables

Table 4-2 lists the requirements for bending radius of power cables.

Table 4-2 Bending radius of power cables

Cross-Sectional Area (mm2) Radius

25 50 mm or larger

35 55 mm or larger

Cable Layout Requirementsl Lay out power cables and PGND cables with future capacity expansion in mind.

l When laying out power cables and PGND cables, separate them from signal cables. Layout power cables along outer columns. When you lay out power cables and PGND cablesparallel to signal cables, the space between them must be at least 30 mm.

l The bending radius of a cable must be five times larger than the diameter of the cable.

l When connecting power cables to the terminals on the PEM in the subrack, lay out thecables straightly and smoothly.

Cable Binding Requirementsl When binding power cables and PGND cables, separate them from signal cables.

l Keep a 200 mm space between cable ties.

l When using the underfloor cabling mode, route the PGND cables along the middle standingpillar on one side of the cabinet.



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l Select the appropriate cable ties, either 150 mm or 300 mm according to the diameter andnumber of cables.

l Bind the cable ties in the same direction. Cut any excess from the cable ties, cutting surfacessmoothly without sharp edges.

4.4 Installing Power Cables and PGND Cables Between aBSC6910 Cabinet and the PDF

This section describes how to install power cables and PGND cables for BSC6910 cabinets inboth overhead cabling and underfloor cabling modes.

4.4.1 Installing Power Cables and PGND cable Between theBSC6910 and the PDF in Overhead Cabling Mode

This section describes how to install power cables between subracks and the PDF and PGNDcable between a cabinet and the PDF in overhead cabling mode.

Prerequisitesl The cabinet to be connected with power cables and PGND cable has been installed.l On the PDF, the power distribution switches for the relevant output terminals have been

set to OFF.l All power distribution switches on the PEM in the subrack have been set to OFF.l Power cables and PGND cable are available.l The materials required for the installation are available. The materials include cable ties,

wax strings, and PVC insulation tape.l The tools required for the installation are available. These tools include a handsaw, a cable

cutter, a wrench, a Phillips screwdriver, a flat-head screwdriver, an electric Phillipsscrewdriver (> 5 N•m = 44.25 lbf•in.), diagonal pliers, and hydraulic pliers.

ContextIf you are using the overhead cabling mode, route the cables from the PDF through the uppercable hole into the cable tray and then the power cables to each subrack,the PGND cable to thetop of each cabinet along the cable tray. Figure 4-2 shows how to install power cables and PGNDcable between a cabinet and the PDF in overhead cabling mode.



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Figure 4-2 Installing power cables and PGND cable in overhead cabling mode

Procedure

Step 1 Determine the length of each power cable and PGND cable by referring to the related engineeringdesign documents or by measuring the actual cabling route.



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Step 2 Uncoil the power cable roll and the PGND cable roll onsite. Measure an appropriate length ofcables with a measuring tape or other measuring tools. Then, cut the cables with a cable cutter(KT35) or a handsaw with 0.8 mm of teeth space. When cutting the cables, leave sufficient slack.

NOTICEIf you find the slack insufficient, replace the cables. Do not make connectors or solder joints.

Step 3 Attach temporary labels to both ends of the cables. The contents on these temporary labels arenot necessarily the same as those on the formal labels because they are only for easyidentification.

Step 4 Lay out power cables and PGND cable between a cabinet and the PDF. Routed the power cablesfrom the PDF through the upper cable hole into the cable tray and then to each subrack alongthe cable tray.

NOTE

l If the space between a cable tray and the top of a cabinet exceeds 800 mm, use a cable ladder to facilitatethe cable layout.

l The bending radius of a cable must be five times larger than the diameter of the cable.

Step 5 Connect the power cables and PGND cable for the cabinet.

1. According to the installation position of each cable, determine the exact length required,and cut off any excess.

2. Obtain the cable terminals delivered with the cabinet. For details, see Assembling the OTTerminal and the Power Cable. Crimp the OT terminals of the power cable and OT terminalsof PGND cable for the subrack and the cabinet, respectively.

NOTE

OT terminals (M6) are used for the -48 V and RTN power cables while OT terminals (M8) are usedfor PGND cable on the cabinet side. The type of OT terminals used on the PDF side is determinedby the actual situation.

NOTE

To facilitate the crimping of OT terminals, crimp them on the ground with hydraulic pliers, and thenplace them in the installation positions.

3. Optional: (Applicable to the top subrack) Remove the left and right plastic cover platesfrom the top rear of the cabinet and cut holes on the cover plates, matching the holes to thepower cable inlets on the power distribution box.

4. Optional: (Applicable to the top subrack) Place both cover plates back to their originalpositions.

5. Optional: (Applicable to the top subrack) Lead the OT terminals of the -48 V power cableand the RTN power cable through the cover plate to the wiring terminals of the subracks.

6. Optional: (Applicable to the subracks other than the top subrack) Lead the OT terminalsof the -48 V power cable and the RTN power cable through the left and right sides of thecabinet to the wiring terminals of the subracks.

7. Connect the OT terminals of the -48 V power cable and RTN power cable to the wiringterminals in the PEM on subracks. Connect the -48 V power cable to the wiring terminallabeled "NEG(-)", and connect the RTN power cable to the wiring terminal labeled "RTN



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(+)". Figure 4-3 shows how to connect an one-hole OT terminal,Figure 4-4 shows how toconnect an two-hole OT terminal.

Figure 4-3 Connecting an one-hole OT terminal

Figure 4-4 Connecting an two-hole OT terminal

NOTE

Use an electric Phillips screwdriver (> 5 N•m = 44.25 lbf•in.) to install OT terminals.

8. Secure the OT terminal of PGND cableto the ground bolt at the rear of the cabinet top.

Step 6 Connect power cables and PGND cable to the PDF output terminals.



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2. Obtain the cable terminals delivered with the cabinet. For details, see Assembling the OTTerminal and the Power Cable. Crimp the OT terminals of power cables and PGND cable.

3. Connect the -48 V power cables, RTN power cables, and PGND cable to the correspondingwiring terminals on the power distribution box.

NOTE

When connecting OT terminals to the wiring terminals, add flat washers and spring washers, andassemble them in order.

Figure 4-5 shows how to install an OT terminal.

Figure 4-5 Installing an OT terminal

(1) Cable (2) Heat shrink tubing (3) Nut

(4) Spring washer (5) Flat washer (6) Wiring terminal

4. Record the installation results in 13 Installation Records.

----End

4.4.2 Installing Power Cables and PGND Cable Between theBSC6910 and the PDF in Underfloor Cabling Mode

This section describes how to install power cables between subracks and the PDF and PGNDCable between a cabinet and the PDF for the BSC6910 in underfloor cabling mode.



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Prerequisitesl The cabinet to be connected with power cables and PGND Cable has been installed.l On the PDF, the power distribution switches for the relevant output terminals have been

set to OFF.l All power distribution switches on the PEM in the subrack have been set to OFF.l Power cables and PGND Cable are available.l The materials required for the installation are available. The materials include cable ties,

wax strings, PVC insulation tape, and lifting sling.l The tools required for the installation are available. These tools include a handsaw, a cable

cutter, a wrench, a Phillips screwdriver, a flat-head screwdriver, an electric Phillipsscrewdriver (> 5 N•m = 44.25 lbf•in.), diagonal pliers, and hydraulic pliers.

ContextIf you are using the underfloor cabling mode, route the cables from the PDF through the cablehole under the PDF, to the bottom of the cabinet beneath the ESD floor. Route the power cablesto the subrack and route PGND Cable to the top of the cabinet along the middle standing pillar.Figure 4-6 shows how to install power cables and PGND Cable between a cabinet and the PDFin underfloor cabling mode.



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Figure 4-6 Installing power cables and PGND Cable in underfloor cabling mode

Procedure

Step 1 Determine the length of each power cable and PGND cable by referring to the related engineeringdesign documents or by measuring the actual cabling route.



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Step 2 Uncoil the power cable roll and the PGND cable roll onsite. Measure an appropriate length ofcables with a measuring tape or other measuring tools. Then, cut the cables with a cable cutter(KT35) or a handsaw with 0.8 mm of teeth space. When cutting the cables, leave sufficient slack.

NOTICEIf you find the slack insufficient, replace the cables. Do not make connectors or solder joints.

Step 3 Attach temporary labels to both ends of the cables. The contents on these temporary labels arenot necessarily the same as those on the formal labels because they are only for easyidentification.

Step 4 Lay out power cables and PGND Cable according to cable routing and engineering requirements.

1. Route four pairs of power cables for each subrack and one PGND cable from the cableoutlet at the bottom of the PDF. Then route the cables under the ESD floor for the cabinet.

2. Divide the power cables for each subrack into two groups and separate them on the left andright sides of the cabinet. Use a temporary cable tie to bind one group with the PGND cable.Repeat this procedure with the other group. Route the two groups of cables to each subrackalong the left and right sides of the cabinet, and route the PGND cable to the middle standingpillar.

3. Place one end of the lifting sling on the top of the middle standing pillar. Route the otherend of the lifting sling to the bottom of the cabinet through the middle standing pillar, andbind it to the PGND cable at the bottom of the middle standing pillar.

4. Pull the upper end of the lifting sling to lift the PGND cable to the top of the cabinet alongthe middle standing pillar.

5. Remove the lifting sling and the temporary cable ties on the PGND cable.

Step 5 Connect power cables to the subrack and connect the PGND cable to the cabinet.


2. Obtain the cable terminals delivered with the cabinet. For details, see Assembling the OTTerminal and the Power Cable. Crimp the OT terminals of the power cable and OT terminalsof the PGND cable for the subrack and the cabinet, respectively.

NOTE

OT terminals (M6) are used for the -48 V and RTN power cables on the cabinet side. OT terminals(M8) are used for PGND Cable. The type of OT terminals used on the PDF side is determined by theactual situation.

NOTE

To facilitate the crimping of OT terminals, crimp them on the ground with hydraulic pliers, and thenplace them in the installation positions.

3. Connect the OT terminals of the -48 V power cable and RTN power cable to the wiringterminals in the PEM on subracks. Connect the -48 V power cable to the wiring terminallabeled "NEG(-)", and connect the RTN power cable to the wiring terminal labeled "RTN(+)". Figure 4-7 shows how to connect an one-hole OT terminal,Figure 4-8 shows how toconnect an two-hole OT terminal.



18

Figure 4-7 Connecting an one-hole OT terminal

Figure 4-8 Connecting an two-hole OT terminal

NOTE

Use an electric Phillips screwdriver (> 5 N•m = 44.25 lbf•in.) to install OT terminals.

4. Secure the OT terminals of PGND Cable to the ground bolt at the rear of the cabinet top.

Step 6 Connect power cables and PGND Cable to the PDF output terminals.


2. Obtain the cable terminals delivered with the cabinet. For details, see Assembling the OTTerminal and the Power Cable. Crimp the OT terminals of power cables and PGND Cable.



19

3. Connect the -48 V power cables, RTN power cables, and PGND Cable to the correspondingwiring terminals on the power distribution box.

NOTE

When connecting OT terminals to the wiring terminals, add flat washers and spring washers, andassemble them in order.

Figure 4-9 shows how to install an OT terminal.

Figure 4-9 Installing an OT terminal

(1) Cable (2) Heat shrink tubing (3) Nut

(4) Spring washer (5) Flat washer (6) Wiring terminal

4. Record the installation results in 13 Installation Records.

----End

4.5 Installing the PGND Cables Between Adjacent CabinetsThis section describes how to connect the upper, middle, and lower parts of the PGND busbarof one cabinet to those of its adjacent cabinet through PGND cables. PGND cables need to beinstalled in adjacent cabinets only when they are installed in combined mode.

PrerequisitesThe power distribution switches for the relevant output terminals have been set to OFF.



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Procedure

Step 1 As described in 4.2 Connections of Power Cables and PGND Cables, use inter-cabinet PGNDcables to connect the upper, middle, and lower PGND busbars on the mounting bar of adjacentcabinets as shown in Figure 4-10.

Figure 4-10 Installing PGND cables for adjacent cabinets

----End

Follow-up ProcedureRecord the installation results in 13 Installation Records.



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5 Checking and Setting DIP Switches onSubracks

This section describes how to check and set the DIP switch on a subrack. In general, subracksare installed in the cabinet before delivery.

PrerequisitesSubracks have been installed in the cabinet.

Context

NOTICEl Wear an ESD wrist strap and connect it to the ESD connector on the cabinet before performing

any operations. For details, see Wearing an ESD Wrist Strap.l DIP switches cannot be set after the subrack is powered on. Therefore, check and set the DIP

switches before powering on the cabinet.

The DIP switch is used to set the subrack number. Figure 5-1 shows the position of a DIPswitch.

BSC6910 GSMInstallation Guide 5 Checking and Setting DIP Switches on Subracks


22

Figure 5-1 Position of a DIP switch

The bit 0 indicates the ON state, and the bit 1 indicates the OFF state. The most significant bit(MSB) of the DIP switch corresponds to the MSB of a byte. Table 5-1 provides the definitionof each bit.

Table 5-1 Definition of each DIP bit

DIP Bit Definition

1 (the least significant bit) Subrack number setting bit

2 Subrack number setting bit




6 Odd parity check bit

7 Reserved bit, generally set to ON

8 (the most significant bit) Startup type of the subrack, must set to OFF

The DIP switch uses odd parity check, so the number of bits that are set to OFF must be odd.The setting is as follows:

1. Set bit 1 to bit 5.

2. Set bit 7 to ON.

3. Set bit 8 to OFF.

4. Count the number of bits that are set to OFF.

l If the number of bits is even, set bit 6 to OFF.



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l If the number of bits is odd, set bit 6 to ON.

Table 5-2 lists the DIP switch setting.

Table 5-2 DIP switch setting

SubrackNo.

DIP Bit DIP SwitchSetting

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0 1

ON ON ON ON ON ON ON OFF

1 1 0 0 0 0 1 0 1

OFF ON ON ON ON OFF ON OFF

2 0 1 0 0 0 1 0 1

ON OFF ON ON ON OFF ON OFF



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SubrackNo.

DIP Bit DIP SwitchSetting

1 2 3 4 5 6 7 8

3 1 1 0 0 0 0 0 1

OFF OFF ON ON ON ON ON OFF

4 0 0 1 0 0 1 0 1

ON ON OFF

ON ON OFF ON OFF

5 1 0 1 0 0 0 0 1

OFF ON OFF

ON ON ON ON OFF



25

Procedure

Step 1 Set the DIP switch.

Step 2 Attach a formal label or temporary label to the subrack. The contents on the temporary label arenot necessarily the same as those on the formal labels because they are used for identifying asubrack during BSC6910 software commissioning.

----End

Follow-up ProcedureRecord the checking and setting results of the DIP switch in 13 Installation Records.



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6 Checking the Power-On Performance ofSubracks

This section describes how to check the power supply to subracks, fan assembly, and boards.

Prerequisitesl Power cables and PGND cables between a cabinet and the PDF are installed.

l Subracks, fan assemblies, and boards are installed.

l A multimeter required for the installation is available.

Context

The cabinet uses a DC power supply. For details, see Technical Specifications of the PEM.

NOTICEWear an ESD wrist strap and connect it to the ESD connector on the cabinet before performingany operations.

You need not to remove the board for performing the power-on check. During powering on asubrack, do not insert a board into or remove a board from the subrack to avoid static damageto boards.

Procedure

Step 1 Set the corresponding output switches on the PDF and all the output switches on the PEM in thesubrack to OFF.

Step 2 Use the multimeter to measure the resistance at the power output terminal for the PDF and atthe input terminals for the PEM in the subrack. Ensure that short-circuiting does not occur eitherbetween the -48 V working power and the RTN working ground or between the -48 V workingpower and the PGND protection ground.

BSC6910 GSMInstallation Guide 6 Checking the Power-On Performance of Subracks


27

Step 3 Set the output switches on the PDF to ON and all the output switches on the PEM in thesubrack to OFF.

Step 4 Set the multimeter to the voltage scale. Use the multimeter to measure the output voltage of thePDF or the input voltage of the PEM in the subrack. Ensure that the voltages range from -40 Vto -57 V.

NOTE

If the input voltage of the PEM is normal, the Power 1 and Power 2 indicators are on. If there is no power,the Power 1 and Power 2 indicators are off. Power 1 indicates the status of Input 1, and Power 2 indicatesthe status of Input 2.

Step 5 Set the corresponding two switches on the PEM in the subrack to ON.

Step 6 Check whether the output voltage of the subrack is normal.l If a subrack is powered on and started normally, the green STATUS indicator on the panel

of the fan assembly blinks. If exceptions occur, turn off the switches on the PEM in thesubrack and the PDF immediately. Check whether the input voltage of the PEM in thesubrack is normal and the power cables are installed correctly. For details about the indicatorson the fan assembly, see Indicators on the Fan Assembly.

l If a subrack is powered on and started normally, the RUN indicator on the board panel is ONor blinks. If all the indicators on a board are OFF, the board or its slot may be faulty. ContactHuawei technical support to resolve this problem. For details about the indicators on theboard, see Indicators on Boards.

l If indicators on all the boards in a subrack are OFF, turn off the switches on the PEM in thesubrack and the PDF immediately. Check whether the input voltage of the PEM in thesubrack is normal and the power cables are installed correctly.

Step 7 Repeat Step 4 to Step 6 to check the power supply to all the PEMs in one cabinet.

Step 8 Repeat Step 1 to Step 7 to measure the power supply to each cabinet.

----End

Follow-up ProcedureRecord the power-on check results in 13 Installation Records. Set the corresponding outputswitches on the PDF and all the output switches on the PEM in the subrack to OFF.

BSC6910 GSMInstallation Guide 6 Checking the Power-On Performance of Subracks


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7 Installing and Setting Boards

About This Chapter

Most boards except the EOMUa/ESAUa boards are installed in subracks before the delivery.Install the EOMUa/ESAUa boards onsite.

7.1 Safety Precautions for Board InstallationThis section describes the precautions you must take when you install, remove, or replace theboards, or perform any other operation that requires bodily contact with the boards.

7.2 Installing the EOMUa/ESAUa BoardsThis section describes how to install the EOMUa/ESAUa board in the MPS.

BSC6910 GSMInstallation Guide 7 Installing and Setting Boards


29

7.1 Safety Precautions for Board InstallationThis section describes the precautions you must take when you install, remove, or replace theboards, or perform any other operation that requires bodily contact with the boards.

Precautions Before Operation

l Store materials for board installation (such as ESD boxes and bags) in the equipment roomfor future use.

l Keep the boards and other electrostatic-sensitive parts in ESD bags. Do not pack or holdthe boards or parts by using plastic foam, common plastic bags, or paper bags.

l Ensure that the cabinet is well grounded before inserting the board into the subrack.Otherwise, the board mill be severely damaged.

l Ensure that the wrist strap is functioning. The value of the resistance measured by themultimeter must range from 0.8 megohm to 1.2 megohms.

l see Wearing an ESD Wrist Strap for the method of measuring the resistance.

Precautions During Operationl Wear an ESD wrist strap or gloves and ensure that the ESD wrist strap is well grounded.

l See Wearing an ESD Wrist Strap for the procedure for wearing an ESD wrist strap or gloves.

l Place the board on an ESD pad when replacing board hardware or chips. Use ESD tweezersor extraction tools to replace chips. Do not touch board chips or pins with your bare hands.

l Discharge the static electricity of the cables and protective sleeves before connecting themto the ports.

l Do not touch the PCB or any other part except jumpers and DIP switches during boardreplacement.

l Place the removed boards and components on an ESD pad or other ESD materials. Do notpack or hold the boards or parts by using plastic foam, common plastic bags, or paper bags.

7.2 Installing the EOMUa/ESAUa BoardsThis section describes how to install the EOMUa/ESAUa board in the MPS.

Prerequisitesl The tools required for the installation are available. The tools include ESD wrist strap or

gloves and Phillips screwdriver.

l The boards to be installed are available.

Context

For the position of the EOMUa/ESAUa board in the subrack, see Configuration of a Subrackand Principles for Installing Boards.



30

The BSC6910 can be installed in the same cabinet with the ECO6910.To avoid the confusionof EOMUa/ESAUa board of the BSC6910 and that of ECO6910, determine whether theEOMUa/ESAUa applies to the BSC6910 based on the print information on the box that housesthe EOMUa/ESAUa, and install the EOMUa/ESAUa in the corresponding subrack.

Procedure

Step 1 Remove the board from the ESD box, and then check the pins and sockets of the board.In case of any bent, missing or broken pins, or any deformed sockets, contact Huawei engineersto replace the board.

Step 2 As shown in part a of Figure 7-1, press the self-locking latches on the front panel and turn theejector levers outwards until the ejector levers cannot be turned further. Check that the ejectorlevers are located in the positions shown in part 2 of Figure 7-1.

Step 3 Hold the panel of the board with one hand and support the board with the other. Then, slide theboard into the subrack along the guide rail until the ejector levers are half closed, as shown inpart 3 of Figure 7-1.

NOTICEWhen inserting the board into the subrack, push the board slowly and steadily to avoid damagingthe pins on the backplane and the metal piece on the board.

Figure 7-1 Installing the board



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Step 4 As shown in part 4 of Figure 7-1, turn the two ejector levers inwards at an angle of about 60°until they hook on to the self-locking latches on the front panel. Ensure that the board is in closecontact with the backplane and that the front panel is inserted into the subrack.

Step 5 Press and fasten the screws on the front panel to secure the board, as shown in part b of Figure7-1.

NOTE

The screws on the front panel have springs. Therefore, the screws can touch the corresponding holes of thesubrack only when you press the screws.

----End

Follow-up ProcedureRecord the installation result in the templates provided in 13 Installation Records.



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8 Installing the Signal Cables

About This Chapter

This chapter describes how to install the signal cables according to the layout requirements. Thesignal cables to be installed include clock signal cables, Ethernet cables and optical cables. Foritems and specifications for checking the installation of signal cables, see 11.1 Checklist forBSC6910 Cable Installation.

8.1 Signal Cables to Be InstalledThis section describes the signal cables to be installed on site.

8.2 Principles of Installing the Signal CablesThis section describes the principles of installing the signal cables. The cables should meet therequirements for minimum bending radius, the principles of laying out cables, the principles ofrouting cables, and the principles of binding cables.

8.3 Installing the Clock Signal CablesThe clock signal cables refer to the Y-shaped clock signal cable and the BITS clock signalcable.The BSC6910 GSM and BSC6910 UMTS support the co-cabinet solution, meaning theirboards can be installed in one cabinet. If two independent BSCs and RNCs are installed in onecabinet, their clock boards are connected to the clock board of other subracks of this set ofequipment.

8.4 Installing the Ethernet CablesThis section describes how to install the Ethernet cables. These cables are the EOMUa boardand the M2000 or the LAN of the customer, the Ethernet cable between the FG2c/FG2d boardand the other device.

8.5 Installing the Inter-SCUb SFP+ High-Speed Cables Between Different SubracksThis section describes how to install the inter-SCUb SFP+ high-speed cables between subracks.Inter-SCUb SFP+ high-speed cables have been pre-installed in the cabinet for a newly deployedsite. The cables needs to be installed at the site only if the cables need to be connected betweencabinets and the cables are used for a expanded site.

8.6 Installing the Optical CablesThis section describes how to install the optical cables between the GOUc/GOUd/POUc/EXOUa board and the other equipment.

BSC6910 GSMInstallation Guide 8 Installing the Signal Cables


33

8.7 Installing the EMU RS485 Communication CablesThis section describes how to install the EMU RS485 communication cable between theBSC6910 and the EMU.

8.8 Connecting the GPS Surge Protector to the GCGa BoardFor the cabinet that is equipped with the GCGa board, install an indoor surge protector on thetop of the cabinet, and then use the cable for the input of the satellite signals to connect the portProtect of the GPS surge protector on the top of the cabinet and the port ANT on the GCGaboard. For items and specifications for checking the installation of the GPS antenna system, see11.2 Checklist for the Installation of the BSC6910 GPS Antenna System.



34

8.1 Signal Cables to Be InstalledThis section describes the signal cables to be installed on site.

Table 8-1 lists the signal cables to be installed.

Table 8-1 Signal cable

Name Cable Type Function Remarks

Clockcables

Y-shaped clockcable

Connects the GCUa board to theSCUb board.

BSC6910 uses theBITS clock cables totransmit the referenceclock signalsextracted from theBITS clock source,see 8.3 Installing theClock Signal Cables.

BITS clockcable

Connects the GCUa board to the BITSclock.

Ethernetcable

Shieldedstraight-through cableEthernet cable

Connects the EOMUa/ESAUa boardto the M2000 or the LAN of thecustomer.

The shielded straight-through cables aremade before delivery.

Connects the FG2c/FG2d board toother devices.

Opticalcable

LC/PC-LC/PCsingle-mode/multimodeoptical cable orLC/PC-FC/PCsingle-mode/multimodeoptical cable orLC/PC-SC/PCsingle-mode/multimodeoptical cable

Connects the /GOUc/GOUd/POUc/EXOUa board to the ODF, the SCUbsin two subracks are interconnected ifthe cable layout distance between twosubracks is longer than 10 m.

The single-modeoptical cables areyellow, and themultimode opticalcables are orange, see8.6 Installing theOptical Cables.



35

Name Cable Type Function Remarks

High-speedcable

SFP+ high-speed cable

Connects SCUb boards in differentsubracks.

When a new site isdeployed, the inter-SCUb cables arealready installed onthe MPR cabinetconfigured with twoor three subracks.When the capacity ofa site is expanded, theinter-SCUb cablesneed to be made andinstalled on site, see8.5 Installing theInter-SCUb SFP+High-Speed CablesBetween DifferentSubracks.NOTE

10GE ports numberedfrom 8 to 11 arerecommended for theinterconnectionbetween SCUb boards.

Optical cables areused if the cablelayout distancebetween subracks indifferent cabinets islonger than 10 m.

Othersignalcables

EMU RS485Communication Cable

Connects the main subrack to theEMU.

The crossover cablesare made beforedelivery.

Signal cable ofthe alarm box

Connects the alarm box to the LocalMaintenance Terminal (LMT) PC.

The crossover cablesare made beforedelivery.

For details about the signal cables, see Cables.

8.2 Principles of Installing the Signal CablesThis section describes the principles of installing the signal cables. The cables should meet therequirements for minimum bending radius, the principles of laying out cables, the principles ofrouting cables, and the principles of binding cables.



36

Principles of Installing the Signal Cables

When installing the signal cables, take the following precautions:

l The optical cable should not be stretched roughly or stepped on, and heavy objects shouldnot be placed on the cable to avoid damage.

l The optical connector not in use must be covered with a dustproof cap.

l If the connectors of the signal cables are made before delivery, you should pack theconnectors with soft and durable materials such as a packing bag during cabling.

l Protect the jackets of the signal cables from being damaged during the routing.

l When coiling the extra length of optical cables on the fiber management tray, apply properforce to avoid damaging the optical.

l The actual installation positions must meet the requirements of site survey and dataconfiguration.

l When installing the signal cables, you should route the extra length of the interconnectioncables on both sides of the cabinet according to the requirement for the bending radius ofthe cables.

l The related operation guide is intended for only the installation method. The actualinstallation position of cables should meet the requirements of site survey and should beconsistent with the data configuration scheme.

Minimum Bending Radius

The bending radius of the signal cable meets the requirements of all types of cables. Table8-2 lists the bending radius of the signal cables.

Table 8-2 Bending radius of the signal cables

Wire Bending Radius

BITS clock signal cable Not less than 45 mm

Y-shaped clock cable Not less than 25 mm

Ethernet cable Not less than 25 mm

Optical cable Not less than 40 mm

SFP+ high-speed cable Not less than 40 mm

EMU RS485 Communication Cable Not less than 25 mm

EOMUa serial port cableNOTE

The port does not require a signal cableor connection to other devices when thesystem runs properly. Therefore,equipment security is not affected.

Not less than 25 mm

Alarm box signal cable Not less than 25 mm



37

Principles of Routing the Signal Cables

To facilitate maintenance and capacity expansion, follow these principles when routing cables.

The layout sequence in overhead and underfloor cabling modes must be the same.

While routing the cables at the back of the cabinet, you should route SFP+ high-speed cablesalong the left side of the cabinet and clock signal cables along the right side of the cabinet. Afterrouting SFP+ high-speed cables and clock signal cables, route Ethernet cables from the middlecolumn to the external column, and then optical cables.For example, on the left side of thecabinet, lay out the following cables from the middle standing pillar to the external standingpillar: (1) SFP high-speed cable (2) Network cable (3) Optical fiber (4) Power cable, as shownin Figure 8-1. On the right side of the cabinet, lay out the following cables from the middlestanding pillar to the external standing pillar: (1) Y-shaped clock cable (2) Network cable (3)Optical fiber (4) Power cable, as shown in Figure 8-2.

Figure 8-1 Principles for laying out signal cables (on the left side of the cabinet)



38

Figure 8-2 Principles for laying out signal cables (on the right side of the cabinet)

Requirements of Routing the Signal Cables

The requirements for routing signal cables are as follows:

l Protect the jackets of the signal cables from being damaged during the routing.

l Hold the connector when plugging out the signal cables to protect the signal cable fromdamage.

l When installing the signal cables, you should route the extra length of the interconnectioncables on both sides of the cabinet according to the requirement for the bending radius ofthe cables.

l For combined cabinets, the extra signal cable in front of the cabinet should be routed alongthe cable ladder or at one side of the cabinet. It should not be placed in the gap between thecombined cabinets.

l The signal cables must be separated from the power cables.



39

l The bending radius of the signal cable satisfies the requirements of all kinds of cables.Table 8-2 lists the bending radius of the signal cables.

l Extra length of the signal cable should be reserved near the connector.

l The signal cables must be neatly laid in the rack, according to the engineering design.

l If the height difference between the cable tray and the top of the cabinet exceeds 800 mm,a vertical cable ladder must be used. The signal cables and the lower part of the downwardcable ladder must be bound together.

l The routing should be in accordance with the engineering design.

l The cabling is clear, proper, and smooth at the bends. The cables are laid in parallel.

l The signal cable layout facilitates maintenance and future expansion.

l Before routing cables outside the cabinet, coat cables with corrugated pipes to protect cablesfrom damages.

Requirements of Binding the Signal Cables

The requirements of binding the signal cables are as follows:

l The signal cables and power cables must be bound separately. The spacing between cableties must be at least 150 mm.

l The twine for binding the cables must be coated with wax.

l The signal cables must be bound at the entrance and exit of the cable trough and at theturning points, as shown in Figure 8-3.

Figure 8-3 Bending and binding signal cables

l The optical cables must be neatly bound in pairs.

l The cables on the cable tray must be bound neatly.

l The cable ties must face the same direction and be tied with proper tightness.

l The cable ties/binding strap must be placed at regular intervals, 200 mm for Ethernetcables, and 150 mm for optical cables.

l The extra length of the cable ties must be cut and the cut surface must be smooth.



40

8.3 Installing the Clock Signal CablesThe clock signal cables refer to the Y-shaped clock signal cable and the BITS clock signalcable.The BSC6910 GSM and BSC6910 UMTS support the co-cabinet solution, meaning theirboards can be installed in one cabinet. If two independent BSCs and RNCs are installed in onecabinet, their clock boards are connected to the clock board of other subracks of this set ofequipment.

8.3.1 Installing the Y-Shaped Clock CablesThis section describes how to install the Y-shaped clock cables between the GCUa/GCGa boardin the MPS and the SCUa/SCUb board in the EPS. When a new site is deployed, the Y-shapedclock cables are already installed on the MPR cabinet configured with two or three subracks.When the capacity of a site is expanded, the Y-shaped clock cables need to be installed on site.

Prerequisitesl The Y-shaped clock cables required for the installation are available.l The required cable ties and wax strings are available.l The tools required for the installation are available. The tools are ESD gloves or ESD wrist

strap, and wire cutter.l The wires in the Y-shaped clock cables are intact, the jacket of the cable is undamaged,

and the pins in the connector are straight.

Context

NOTICEWear an ESD wrist strap and connect it to the ESD connector on the cabinet before you performthe operation. For details, see Wearing an ESD Wrist Strap.

For the installation positions of the Y-shaped clock cables in the cabinet, see Connections ofSignal Cables for the MPR.

The Y-shaped clock cable has three specifications in length: 2.0 m, 2.5 m, and 9.7 m. The 2.0m cable is used to connect the GCUa/GCGa board to the SCUa/SCUb board in two adjacentsubracks in one cabinet. The 2.5 m cable is used to connect the GCUa/GCGa board to the SCUa/SCUb board in different subracks in one cabinet. The 9.7 m cable is used to connect the GCUa/GCGa board to the SCUa/SCUb board in different cabinets.

Procedure

Step 1 Attach formal labels to identify the signal cables of the same type when the number of signalcables of the same type to be installed is more than one.

Step 2 Put one end with an RJ45 connector to the SCUa/SCUb board. Take one end of the cable thathas two RJ45 connectors and lead it from the SCUa/SCUb board to the distribution post in the



41

cable trough. Estimate the length of the cable between the SCUa/SCUb board and the GCUa/GCGa board. The bending radius must be at least 25 mm. Then, bind the cable and the distributionpost. Route the cable along the cable trough to the GCUa/GCGa board.

Step 3 Route the cable to the GCUa/GCGa according to the requirements specified in 8.2 Principlesof Installing the Signal Cables and the engineering requirements. The cabling of the Y-shapedclock cables is described in Table 8-3.

Table 8-3 Cabling of the Y-shaped clock cables

Condition Cabling mode Action

The SCUa/SCUb and theGCUa/GCGa are located inthe same cabinet.

Cabling within the cabinet Lead the optical cables to theGCUa/GCGa board throughthe cable trough beneath theMPS along the column of thecabinet.

The SCUa/SCUb and theGCUa/GCGa are located indifferent cabinets.

Overhead cabling 1. Route the cable upwardsthrough the cable hole ontop of the cabinet and tothe cable tray. Then, leadthe cable along the cabletray to the cable hole ontop of another cabinet.

2. Route the cable upwardsor downwards along thecolumn to the cabletrough under the subrackthat holds the board.Then, lead the cable alongthe cable trough to theGCUa/GCGa board.

Underfloor cabling 1. Lead the cable out of thecabinet along the columnthrough the lower cablehole. Then, lead the cableto the cabinet through thelower cable holeaccording to the cablingand engineeringrequirements.

2. Route the cable upwardsalong the column to thecable trough under thesubrack that holds theboard. Then, lead thecable along the cabletrough to the GCUa/GCGa board.



42

Step 4 Cut off the cable ties that are attached on the distribution post of the cable trough. Insert theRJ45 connector at the SCUa/SCUb end of the clock cable into the corresponding port on theSCUa/SCUb. Then, insert the two RJ45 connectors at the GCUa/GCGa end into the two portson the active and standby GCUa/GCGa boards, as shown in Figure 8-4.

Figure 8-4 Connecting the Y-shaped clock cables

----End

Follow-up ProcedureRecord the installation results in the templates provided in 13 Installation Records.

8.3.2 Installing the BITS Clock Signal CablesThis section describes how to install the BITS clock signal cables between the GCUa/GCGaboard and the BITS clock source. Based on the impedance, the BITS clock signal cables areclassified into 75-ohm coaxial clock cable and 120-ohm clock conversion cable.



43

Prerequisitesl The required 75-ohm coaxial clock cables or 120-ohm clock conversion cables are

available.

l The required cable ties and wax strings are available.

l The tools required for the installation are available. The tools are ESD gloves or ESD wriststrap, and wire cutter.

Context


The BITS clock signal cables are classified into 75-ohm coaxial clock signal cable and 120-ohmclock conversion cable. The functions and connection modes of the clock cables are as follows:

l 75-ohm coaxial clock cable

One end of the 75-ohm coaxial clock cable is fixed to the GCUa/GCGa board through theSMB connector. The other end is fixed to the BITS clock source through the connectordelivered with the clock source.

l 120-ohm clock conversion cable

The 120-ohm clock conversion cable completes the conversion from 75 ohms to 120 ohms.One end of the 120-ohm clock conversion cable is fixed to the GCUa/GCGa board throughthe SMB connector. The other end is fixed to the BITS clock source through the connectordelivered with the clock source.

For the installation positions of the 75-ohm coaxial clock signal cable and 120-ohm clockconversion cable in the cabinet, see Connections of Signal Cables for the MPR.

Procedure

Step 1 Route one end of the 75-ohm coaxial clock signal cable or 120-ohm clock conversion cable tothe GCUa/GCGa board, and lead the other end to the distribution post in the cable trough.Estimate the length of the cable between boards. Then, bind the cable and the distribution post,and route the cable along the cable trough to the left side of the cabinet.

Step 2 Route the cable along the cable trayto the BITS clock according to the cabling and engineeringrequirements.

Step 3 Insert one end of the 75-ohm coaxial clock signal cable or 120-ohm clock conversion cable intothe CLKIN 0 or CLKIN 1 port on the GCUa/GCGa board, and insert the other end into the portof the BITS clock source, as shown in Figure 8-5. Ensure that the connectors of cables areappropriately linked to the ports.



44

Figure 8-5 Connecting the cables between the GCUa/GCGa and the BITS clock

NOTE

The 120-ohm clock conversion cable contains two SMB connectors on one end. Only one SMB connectoris used for the connection with the GCUa/GCGa board. The other SMB connector is bound with the wirebushing through cable ties. Pay attention to the connection when using the 120-ohm clock conversion cable.

----End

Follow-up ProcedureRecord the installation results in the templates provided in 13 Installation Records.

8.4 Installing the Ethernet CablesThis section describes how to install the Ethernet cables. These cables are the EOMUa boardand the M2000 or the LAN of the customer, the Ethernet cable between the FG2c/FG2d boardand the other device.



45

8.4.1 Arranging the Ethernet CablesThis section describes how to arrange the Ethernet cables. Before installation, you should obtainthe Ethernet cables of appropriate length and attach formal or temporary labels to the cables.

Prerequisitesl The shielded cables to be installed are available.


l The tools required for the installation are available. The tools are ESD gloves or ESD wriststrap, wire cutter, Ethernet cable tester, and long tape measure or ruler.

ContextNOTE

l The shielded straight-through Ethernet cables between the EOMUa /EGPUa /FG2c/FG2d board andthe other equipment. The Ethernet cables need to be only installed on site.

Procedure

Step 1 Measure the distance between Ethernet ports to be connected.

Step 2 Based on the measurement, obtain an Ethernet cable of appropriate length. The cable should bea little longer than the required length.

Step 3 Attach formal or temporary labels to both ends of the cable for easy identification. The contentson the temporary labels are not restricted because they are only for distinguishing the cablesafter the layout.

----End

8.4.2 Installing Ethernet Cables Between the EOMUa and the LANOne end of the Ethernet cables for the EOMUa is connected to the Ethernet ports on theEOMUa, and the other end is connected to the Ethernet ports of the LAN.

Prerequisitesl The straight-through cables to be installed are available.

l Cable ties or wax strings are available.

l Required tools are available, including an ESD wrist strap or gloves and a cable cutter.

Context




46

Procedurel BSC6910 and ECO6910 are configured in different cabinets.

Scenario Connections Operation

Scenario 1: Nocable bridge isinstalled on theair defense frameand air deflector.

The Ethernet cables areconnected to theEOMUa board

1. Route the Ethernet cables on thecable ladder or cable trough outsidethe cabinet according to therequirements for routing signalcables and the cabling method on site.

2. Route one end of the Ethernet cablesto the peer equipment, and properlyinsert the cables into the Ethernetports on the peer equipment.

3. Route the other end of the Ethernetcables into the cabinet through thecable hole at the top or bottom of thecabinet.

4. Route the Ethernet cables to the airdefence subrack, and loosen the fourscrews on the cover plate for the airdefence subrack to remove the coverplate.

5. Route the Ethernet cables out of theair defence subrack, and properlyinsert the cables to the ports on theEOMUa.

6. Use cable ties to bind the Ethernetcables in the air defence frame.

7. Tighten the four screws on the coverplate for the air defence subrack, asshown in Figure 8-6.



47


Scenario 2:Cable bridges areinstalled on theair defense frameand air deflector.

The Ethernet cables areconnected to theEOMUa board

1. Route the Ethernet cables on thecable ladder or cable trough outsidethe cabinet according to therequirements for routing signalcables and the cabling method onsite.

2. Route one end of the Ethernet cablesto the peer equipment, and properlyinsert the cables into the Ethernetports on the peer equipment.

3. Route the other end of the Ethernetcables into the cabinet through thecable hole at the top or bottom of thecabinet.

4. Connect the cables to the EOMUaboard and tighten the cables.

5. Bind the cables to the cable bridgeand then route the cables out of thecabinet, as shown in Figure 8-7



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Figure 8-6 Connections of Ethernet cables between the EOMUa and the LAN (taking theair defense frame on which no cable bridge is installed as an example)



49

Figure 8-7 Connections of Ethernet cables between the EOMUa and the LAN (taking theair defense frame on which the cable bridge is installed as an example)

l BSC6910 and ECO6910 are configured in different subracks in one cabinet.



50


Scenario 1: No cablebridge is installed onthe air defense frameand air deflector.

The Ethernet cables areconnected to theEOMUa board in themiddle subrack.

1. Route the Ethernet cables on thecable ladder or cable troughoutside the cabinet according tothe requirements for routingsignal cables and the cablingmethod on site.

2. Route one end of each Ethernetcable to the air deflector alongone side of the cabinet.

3. Connect the cables to theEOMUa board and tighten thecables.

4. Bind the Ethernet cables on thesurface of the air deflector usingcable ties, as shown in Figure8-8.

The Ethernet cables areconnected to theEOMUa board in thelower subrack.

For detailed operation about cableconnections, see BSC6910 andECO6910 are configured indifferent cabinets Scenario 1: Nocable bridge is installed on the airdefense frame and air deflector.

Scenario 2: Cablebridges are installedon the air defenseframe and airdeflector.

The Ethernet cables areconnected to theEOMUa board in themiddle subrack.

For detailed operation about cableconnections, see BSC6910 andECO6910 are configured indifferent cabinets Scenario 2:Cable bridges are installed on theair defense frame and airdeflector.

The Ethernet cables areconnected to theEOMUa board in thelower subrack



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Figure 8-8 Connections of Ethernet cables between the EOMUa and the LAN

NOTE

Two or four Ethernet cables can be used to connect active and standby EOMUa boards to the LAN,depending on customer requirements.

----End

Follow-up ProcedureRecord the installation result in 13 Installation Records.



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8.4.3 Installing the Ethernet Cables Between the ESAUa Board andthe LAN

This section describes how to install the Ethernet cables between the ESAUa board and the LAN.You should route one end of the cable to the ESAUa board and lead the other end through theEthernet port on the ESAUa board.

Prerequisitesl The straight-through cables to be installed are available.l The required cable ties and wax strings are available.l The tools required for the installation are available. The tools are ESD gloves or ESD wrist

strap, and wire cutter.

Context


Procedure

Step 1 Lay the Ethernet cable on the cable ladder or in the cable trough outside the cabinet and routethe Ethernet cable according to the requirements for routing signal cables and the cabling methodonsite.

Step 2 Route one end of the Ethernet cables to the peer equipment, and properly insert the cables intothe Ethernet ports on the peer equipment.

Step 3 Route the other end of the Ethernet cables into the cabinet through the cable hole at the top orbottom of the cabinet.

Step 4 Route the Ethernet cables to the air defence subrack, and loosen the four screws on the coverplate for the air defence subrack to remove the cover plate.

Step 5 Route the Ethernet cables out of the air defence subrack, and properly insert the cables to theports on the ESAUa.

Step 6 Use cable ties to bind the Ethernet cables in the air defense subrack.

Step 7 Tighten the four screws on the cover plate for the air defence subrack, as shown in Figure 8-9.



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Figure 8-9 Connections of Ethernet cables between the ESAUa board and the LAN

----End




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8.4.4 Installing the Ethernet Cables Between the FG2c/FG2d Boardand the Other Equipment

This section describes how to install the Ethernet cables between the FG2c/FG2d board and theother equipment.

Prerequisitesl The straight-through cables to be installed are available.l The required cable ties and wax strings are available.l The tools required for the installation are available. The tools are ESD gloves or ESD wrist

strap, and wire cutter.

Context


Procedure

Step 1 Lay the Ethernet cable on the cable ladder or in the cable trough outside the cabinet and routethe Ethernet cable according to the requirements for routing signal cables and the cabling methodonsite.

Step 2 Lead one end of the Ethernet cable to the Ethernet port on the peer equipment.

Step 3 According to the actual scenarios, lead the other end of the cable into the cabinet through thecable hole either at the top of or at the bottom of the cabinet.

Step 4 Lead one end of the Ethernet cable along the middle standing pillar in the cabinet, lead the otherend of the Ethernet cable to the cable trough beneath the subrack where the FG2c/FG2d boardis installed, and then lead the cable to the Ethernet port on the FG2c/FG2d board along the cabletrough.

Step 5 Tightly insert the cables into the corresponding Ethernet ports on the FG2c/FG2d board and onthe peer equipment, as shown in Figure 8-10.



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Figure 8-10 Connection between the FG2c/FG2d board and the other equipment

----End


8.5 Installing the Inter-SCUb SFP+ High-Speed CablesBetween Different Subracks

This section describes how to install the inter-SCUb SFP+ high-speed cables between subracks.Inter-SCUb SFP+ high-speed cables have been pre-installed in the cabinet for a newly deployedsite. The cables needs to be installed at the site only if the cables need to be connected betweencabinets and the cables are used for a expanded site.



56

Prerequisitesl The straight-through cables to be installed are available.

l The unshielded straight-through cables to be installed are available.


l The tools required for the installation are available. The tools are ESD gloves or ESD wriststrap, and wire cutter.

ContextNOTE

The BSC6910 GSM and BSC6910 UMTS support the co-cabinet solution, meaning their boards can beinstalled in one cabinet. If two independent BSCs and RNCs are installed in one cabinet, their clock boardsare connected to the SCU board of other subracks of this set of equipment.

Connections of Signal Cables for the MPR, Connections of Signal Cables for the EPR describethe installation positions of the inter-SCUb SFP+ high-speed cables in the cabinet.

The Inter-SCUb SFP+ High-Speed Cables is classified into two types in length: 3 m, 10 m. The3 m cable is used for the connection between subracks in the same cabinet. The 10 m cable isused for the connection of subracks in different cabinets.

The crossed and straight connection principle is as follows in Figure 8-11.

Figure 8-11 Crossed and straight connections between two subracks

NOTE

l A pair of active and standby SCUb boards are installed in each subrack. Each SCUb has two ports forinter-subrack connection. Therefore, each subrack has four ports for inter-subrack connection. Theports are connected crossly or straightly, as shown in Figure-X. Ports 0 are used for straight connectionand ports 1 are used for crossed connection.

l Multi-mode optical cables are used when the cabling length between subracks is longer than 10 m.

Procedurel 1. Lay one end of the cable to the SCUb board (usually starting from the SCUb boards

in the main surback, which is located at the bottom of the cabinet). Lead the other end



57

to the other SCUb board. Estimate the length of the cable between the SCUb boards.The bending radius must be at least 25 mm. Then, bind the cable and the distributionpost in the cable trough.

2. Route the cable to the SCUb board according to the requirements specified in 8.2Principles of Installing the Signal Cables and the engineering requirements. Thecabling is described in Table 8-4.

Table 8-4 Cabling of the inter-SCUb cables when the TCS is configured locally

Condition Cabling Mode Action

The SCUb boards to beconnected are located inthe same cabinet.

Cabling withinthe cabinet

Route the cable upwards along thecolumn to the cable trough underthe subrack where the SCUb boardis located. Then, lead the cable tothe SCUb board along the cabletrough.

The SCUb boards to beconnected are located indifferent cabinets.

Overheadcabling

1. Route the cable upwardsthrough the cable hole on top ofthe cabinet and to the cable tray.Then, lead the cable along thecable tray to the cable hole ontop of another cabinet.

2. Route the cable downwardsalong the column to the cabletrough under the subrack wherethe SCUb board is located.Then, lead the cable along thecable trough to the SCUb board.

Under cabling 1. Lead the cable out of the cabinetalong the column through thelower cable hole. Then, lead thecable to the cabinet through thelower cable hole according tothe cabling and engineeringrequirements.

2. Route the cable along thecolumn to the cable troughunder the subrack where theSCUb board is located. Then,lead the cable along the cabletrough to the SCUb board.

3. Cut the cable tie that binds the cable and the distribution post in the cable trough. Then,

insert the two ends of the cable into the ports on the SCUb boards in slots 20 and 21,as shown in Figure 8-12.



58

Figure 8-12 Connection of the inter-SCUb cables in full configuration of two cabinets

NOTE

In Figure 8-12, blue lines are SFP+ high-speed cables.

4. Bind the cables that are led out of the same board by using cable ties.5. Check all the ports connected with SFP+ High-Speed cables, and make sure both

crossed and straight connections correct, as show in Figure 8-11.

Connections of Signal Cables on the SCUb Board shows the connections of signal cablesfor the SCUb board.

NOTICEThe inter-SCUb cables are installed close to the front door of the cabinet. After the cablesare installed, be careful not to remove them when you open the front door.



59

NOTE

l After installing SFP+ high-speed cables, check the indicators corresponding to ports 8 to 11 (10GLINK) on the SCUb boards as follows:

l If the indicators corresponding to the 10G LINK ports on either SCUb board are on or blink, theSFP+ high-speed cables are connected securely.

For example, after the SFP+ high-speed cables between subracks 0 and 1 are connected, check theindicators corresponding to the 10G LINK ports on both ends of the cables. The cables areconnected securely if the indicators on the SCUb board in either subrack 0 or 1 are on or blinking.

l The corresponding indicators on the SCUb board can indicate the states of the SFP+ ports (ports 8 to11) after the power-on check is finished. This does not require loading or configuration of data.

----End

8.6 Installing the Optical CablesThis section describes how to install the optical cables between the GOUc/GOUd/POUc/EXOUa board and the other equipment.

8.6.1 Using the Accessories of the Optical CableThis section describes how to use the SC/PC, VC/PC, and LC/PC adapters and also how to usethe fiber management tray.

Using the SC/PC Adapter

An SC/PC adapter connects to an optical cable that has an SC/PC connector.

Context

Figure 8-13 shows the appearance of an SC/PC adapter.

Figure 8-13 Appearance of an SC/PC adapter

Procedure

Step 1 Align one SC/PC connector of an optical cable with the SC/PC adapter, and feed the connectorinto the adapter. If you hear a clicking sound, the connector is securely connected.



60

Step 2 Use the same method to connect another SC/PC connector of the optical cable to the other endof the SC/PC adapter.

----End

Using the FC/PC AdapterAn FC/PC adapter connects to an optical cable that has an FC/PC connector.

ContextFigure 8-14 shows the appearance of an FC/PC adapter.

Figure 8-14 Appearance of an FC/PC adapter

Procedure

Step 1 Align one FC/PC connector of an optical cable with the FC/PC adapter, feed the connector intothe adapter, and then fasten the connector.

Step 2 Use the same method to connect another FC/PC connector of the optical cable to the other endof the FC/PC adapter.

----End

Using the LC/PC AdapterAn LC/PC adapter connects to an optical cable that has an LC/PC connector.

ContextFigure 8-15 shows the appearance of an LC/PC adapter.



61

Figure 8-15 Appearance of an LC/PC adapter

Procedure

Step 1 Align one LC/PC connector of an optical cable with the LC/PC adapter, and feed the connectorinto the adapter. If you hear a clicking sound, the connector is securely connected.

Step 2 Use the same method to connect another LC/PC connector of the optical cable to the other endof the LC/PC adapter.

----End

Using the Fiber Management Tray

This section describes how to use the fiber management tray. When routing optical cables, coilthe redundant cables on the fiber management tray below the rear cable trough at the rear of thecabinet.

ContextFigure 8-16 shows the installation position of the fiber management tray.

Figure 8-16 Installation position of the fiber management tray



62

Procedure

Step 1 Route optical cables upwards or downwards to the undermount fiber management tray along themiddle standing pillar in the cabinet. If both optical cables and Ethernet cables are available,route Ethernet cables along the side next to the middle standing pillar.

Step 2 Wrap redundant optical cables on the fiber management tray according to the operation methodprinted on the cover of the fiber management tray.

NOTE

If only one optical cable is wrapped, the length of the wrapped cable is about 80 m. If 100 optical cablesare wrapped, the length of each wrapped cable is about 0.5 m. Extra cables can be wrapped onto the ODF.

----End

8.6.2 Arranging the Optical CablesThis section describes how to arrange the optical cables. Before installing optical cables, youshould unpack and check them, attach temporary labels to them, and keep the corrugated pipesready.

Prerequisitesl The required optical cables, optical connectors, and corrugated pipes are delivered to the

site.

l The tools required for the installation are available. The tools are the tape measure, wirecutter, diagonal pliers, and cable ties.

Procedure

Step 1 Check the optical module. If the metal sheet is exposed, push the optical module until you heara click sound.

Step 2 Take the optical cables out of the package and sort them by length and installation position.

Step 3 Check each optical cable. If the optical cable is broken or the jacket of the cable is damaged,contact technical support engineers of Huawei for replacement.

Step 4 Remove the protective caps from the optical connectors of the optical cable and check whetherthe connectors are clean. If they are clean, put the protective caps onto the connectors. If theyare not clean, clean the optical connectors, and then put the protective caps on to the connectors.For details about how to clean the connectors, see Cleaning Fiber Connectors.

Step 5 Attach temporary labels to both ends of the cables. The contents on the temporary labels are notrestricted because they are only for distinguishing the cables after the layout.

Step 6 Distribute the corrugated pipes according to the following aspects: the quantity of the opticalcables and the length of the delivered corrugated pipes.

NOTE

l All the optical cables outside the cabinet should be covered with corrugated pipe.

l All the optical cables inside the cabinet do not need to be coated with corrugated pipe.



63

Step 7 Cut the corrugated pipes, and then cover the cut surface with PVC insulation tape.

Step 8 Cover the optical cables with the corrugated pipes.

----End

8.6.3 Installing the Optical Cables Between the EXOUa/GOUc/GOUd/POUc Boards and the Other Equipment

This section describes how to install the optical cables between the EXOUa/GOUc/GOUd/POUc board and other equipment. The end of the optical cable connected to the BSC6910 usesan LC/PC connector, and the other end uses a connector as required.

Prerequisitesl The optical cables and corrugated pipes to be installed are available.

l The required cable ties, wax strings, binding straps, and optical labels are available.

l The tools required for the installation are available. The tools are ESD gloves or ESD wriststrap, wire cutter, and diagonal pliers.

Context


For the installation positions of the optical cables between the EXOUa/GOUc/GOUd/POUcboard and the other equipment, see Connections of Signal Cables for the MPR, Connections ofSignal Cables for the EPR.

NOTE

If you need to remove the optical cables during the installation, do as follows:

l For the IC/PC or SC/PC connector, press the tab on the connector and remove the optical cable.

l For the FC/PC connector, unscrew the optical connector counterclockwise.

Procedure

Step 1 Lead the optical cables from the optical port of the EXOUa/GOUc/GOUd/POUc board to theback (the side near the subrack) of rear cable trough beneath the subrack. Use cable ties to bindthe optical cables to the rear cable trough.

Step 2 Put the optical cables to one side of the cabinet through the bottom of the rear cable trough. (Theoptical cables on slots 20 through 27 are put on the left side and those on slots 14 through 19are put on the right side.) Coil the extra length of the optical cables on the fiber managementtrays below the rear cable trough.



64

Step 3 Route the optical cables to the other equipment along the cable tray according to the requirementsspecified in 8.2 Principles of Installing the Signal Cables and the engineering requirements.You can use either the overhead cabling or the underfloor cabling.

Step 4 Connect the optical cables to the optical ports, as shown in Figure 8-17.

Figure 8-17 Connection of the optical cables between the EXOUa/GOUc/GOUd/POUc and theother equipment(taking the GOUc as an example)

1. Remove the protective caps from the optical connectors and ports, and store the protectivecaps for future use.

2. Insert the LC/PC connectors into the ports labeled "TX" on the interface boards until youhear a slight click.

3. Repeat Step 4.2 to insert the LC/PC connectors at one end of another optical cable into theports labeled "RX" on the interface boards.



65

4. Record the relationship between the optical cables and the optical ports to help correctlyconnect the optical cables to the peer equipment.

Step 5 Connect the other end of each optical cable to the peer equipment. For the detailed procedure,refer to Table 8-5.

Table 8-5 Connecting different types of connectors to peer equipment

Peer Equipment Connectors ofOptical Cables

Connection Method

ODF SC/PC Insert the connectors into the correspondingoptical ports on the flange of the ODF until youhear a slight click.LC/PC

FC/PC Insert the connectors into the correspondingoptical ports on the flange of the ODF andscrew the connectors.

Peer network element(NE)

SC/PC Insert the connectors into the correspondingoptical ports on the peer NE until you hear aslight click.LC/PC

FC/PC Insert the connectors into the correspondingoptical ports on the peer NE and screw theconnectors.

Optical cable of peerequipment

SC/PC Optical cable adapters are required to connectthe optical cables.

LC/PC

FC/PC

----End


8.7 Installing the EMU RS485 Communication CablesThis section describes how to install the EMU RS485 communication cable between theBSC6910 and the EMU.

Prerequisitesl The RS485 communication cable to be installed is available.l The wires in the RS485 communication cable are intact, the jacket of the cable is

undamaged, and the pins in the connector are straight.



66

Context

NOTICEThe ELU port is a reserved port and is not used now. Please do not connect any cable to it.

NOTE

l The RS485 communication cable is used to connect the EMU environment monitoring instrument(EMI) and main subrack.

l The EMU EMI has two types: type A and type B. Type A and B are wall-mounted. The methods ofinstalling the RS485 communication cable for type A and type B are the same. The following takes thetype-B EMI as an example to describe how to install the RS485 communication cable.

Procedure

Step 1 Attach the DB9 male connector at one end of the RS485 communication cable to the DB9 femaleconnector on the EMI.

Step 2 Attach the RJ45 connector at the other end of the RS485 communication cable to EMU terminalof the main subrack, as shown in Figure 8-18.



67

Figure 8-18 Connections of cables between the EMU and the PEM

----End

8.8 Connecting the GPS Surge Protector to the GCGa BoardFor the cabinet that is equipped with the GCGa board, install an indoor surge protector on thetop of the cabinet, and then use the cable for the input of the satellite signals to connect the port



68

Protect of the GPS surge protector on the top of the cabinet and the port ANT on the GCGaboard. For items and specifications for checking the installation of the GPS antenna system, see11.2 Checklist for the Installation of the BSC6910 GPS Antenna System.

Prerequisitesl The indoor surge protector to be installed, its fastener, and the signal cable used to connect

the GPS surge protector to the GCGa board are ready.l The tool required during the installation, that is, the crosshead screwdriver, is ready.

Context


The signal cables refer to the 1 m and 2.5 m cables. Thus, a 3.5 m signal cable is made for theinput GPS signals. Figure 8-19 shows the connection between the GPS surge protector and theGCGa board.



69

Figure 8-19 Connecting the GPS surge protector to the GCGa board

Procedure

Step 1 Install the surge protector to its fastener, as shown in Figure 8-20.



70

Figure 8-20 Installing the surge protector to its fastener

1. Remove the retention screws at the GND and Surge ports from the indoor GPS surge

protector.2. Put the surge protector onto the fastener, and then tighten the retention screws on the GND

and Surge ports. Ensure that the GPS surge protector is well connected to the fastener.

Step 2 Use the bolt to fix the fastener to the top of the cabinet and ensure that the fastener is reliablygrounded. Refer to Figure 8-21.

Figure 8-21 Installing the fastener of the surge protector



71

NOTE

l You are advised to route the clock signal cable between the GCGa board and surge protector along theright side of the cabinet, because the GCGa board is installed in a slot at the right side of the subrack.

l You are advised to route the feeder between the GPS antenna and surge protector along the left sideof the cabinet in the underfloor cabling mode. In addition, you must leave a clearance greater than 30mm between the feeder and power cable, and between the feeder and signal cable. For details on theunderfloor cabling mode.

Step 3 Connect the N type female connector of the 1 meter long cable to the N type male connector ofthe 2.5 meter long cable, and thus a 3.5 meter long cable is formed.

Step 4 Along the left side at the front of the cabinet, lead the end (with the elbow SMA connector) ofthe cable to the cable trough beneath the MPS subrack, and then lead the end to port ANT onthe GCGa board along the cable trough.

Step 5 Lead the other end (with the N-type female connector) of the cable upwards along the mountingbar on the left at the front of the cabinet and through the cabling holes on the top of the cabinetuntil the cable end reaches the GPS surge protector.

Step 6 As shown in Figure 8-19, connect the elbow SMA connector to port ANT on the GCGa board.Lead the N-type female connector to the port Protect of the surge protector on the top of thecabinet, and then fasten the nut.

----End




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9 Installing the Alarm Box and the ComputerServing as the LMT

About This Chapter

This section describes how to install an alarm box and a computer serving as the LMT. If youare installing the computer and the alarm box in the equipment room, you can install them alongwith the BSC6910 equipment. For items and specifications for checking the installation of theLMT computer and the alarm box, see 11.3 Checklist for the Installation of the LMTComputer and Alarm Box.

9.1 Installing the Computer Serving as the LMTThis section describes how to install a computer serving as the LMT. If you are installing thecomputer in the equipment room, you can install it along with the BSC6910 equipment.

9.2 Installing the Alarm BoxThis section describes how to install an alarm box. If you are installing the alarm box in theequipment room, you can install it along with the BSC6910 equipment.

BSC6910 GSMInstallation Guide

9 Installing the Alarm Box and the Computer Serving as theLMT


73

9.1 Installing the Computer Serving as the LMTThis section describes how to install a computer serving as the LMT. If you are installing thecomputer in the equipment room, you can install it along with the BSC6910 equipment.

Prerequisitesl The components required for the installation are available. The components include the

computer, power cables, and signal cables.l The tools required for the installation are available. These tools include a Phillips

screwdriver and a wrench.

Procedure

Step 1 Place the computer on the workbench.

Step 2 Connect the power cable for the computer and signal cables for the mouse, keyboard, andmonitor.

Step 3 Connect a network cable to the computer.

Step 4 Connect the PGND cable of the power socket for the computer to the ground bar of the PDF orany nearby ground.

NOTE

The distance between the power socket and PDF ground bar or nearby ground must be equal to or less than30 m. If the distance exceeds 30 m, find a closer ground bar. The cross-sectional area of the connectingcable must be equal to or larger than 6 mm2.

----End

Follow-up ProcedureRecord the installation results in 13 Installation Records.

9.2 Installing the Alarm BoxThis section describes how to install an alarm box. If you are installing the alarm box in theequipment room, you can install it along with the BSC6910 equipment.

Prerequisitesl The components required for the installation are available. The components include the

alarm box, power cables, and signal cables.l The tools required for the installation are available. These tools include a Phillips

screwdriver and a PVC cable trough.

ContextFor detailed operations for installing the alarm box and connecting power cables and signalcables, see the accompanying documents.




74

The alarm box requires a -48 V DC or 220 V AC power supply. Connect one end of the powercable to the alarm box, and connect the other end to a nearby PDF or 220 V AC power outputterminal.

Procedure

Step 1 Install the alarm box.

Step 2 Route signal cables and power cables.

NOTE

l Route signal cables and power cables along with network cables for the alarm management system terminal.

l Route the power cables and signal cables through a PVC cable trough to protect and hide the cables.

l Connect the alarm box signal cable to the LMT computer.

Step 3 Install power cables for the alarm box.

Step 4 Install signal cables for the alarm box.

----End




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10 Attaching the Engineering Labels to theCables

About This Chapter

This chapter describes how to attach engineering labels to the power, PGND, and signal cablesafter the cables are installed

10.1 Attaching the Engineering Labels to the Power Cables and PGND CablesThis section describes how to attach the engineering labels to the power cables and PGND cables.After installing the power cables and PGND cables, replace the temporary labels withengineering labels.

10.2 Attaching the Engineering Labels to the Signal CablesThis section describes how to attach the engineering labels to the signal cables after the signalcables are installed.

BSC6910 GSMInstallation Guide 10 Attaching the Engineering Labels to the Cables


76

10.1 Attaching the Engineering Labels to the Power Cablesand PGND Cables

This section describes how to attach the engineering labels to the power cables and PGND cables.After installing the power cables and PGND cables, replace the temporary labels withengineering labels.

Prerequisitesl The power cables and PGND cables are installed.

l The required materials are available. The required materials are pen and label paper.

Procedure

Step 1 Fill out the engineering labels of the power cables and PGND cable according to Labeling PowerCables, referring to the temporary labels.

Step 2 Remove the temporary labels. Then, attach the engineering labels according to the specificationsdescribed in Labeling Power Cables.

----End

Follow-up ProcedureRecord the operation result in the templates provided in 13 Installation Records.

10.2 Attaching the Engineering Labels to the Signal CablesThis section describes how to attach the engineering labels to the signal cables after the signalcables are installed.

Prerequisites

The signal cables are installed.

Procedure

Step 1 Arrange an engineering label and attach the long end of the label to the cable, as shown in Figure10-1.

Figure 10-1 Attaching an engineering label



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Step 2 Attach the label 2 cm away from the connector, and turn over the long end. Ensure that the longend is aligned with the label.

NOTE

By default, the label is attached 2 cm away from the connector. If required, you can change the position tofacilitate smooth installation. Consistency and neatness, however, must be maintained.

Step 3 There should be a 2 mm to 3 mm space between the label and the cable, as shown in Figure10-2.

Figure 10-2 Required space between the label and the cable

Step 4 Fold the lower edge of the label upwards, and align the upper edge with the lower edge, as shownin Figure 10-3 and Figure 10-4.

Figure 10-3 Folding the lower edge upwards

Figure 10-4 Installed label



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----End

Follow-up ProcedureRecord the result of label attachment in the templates provided in 13 Installation Records.



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11 Checklist for the Hardware Installation

About This Chapter

This chapter describes how to check the hardware installation. The hardware consists of cables,Local Maintenance Terminal (LMT) PC, and alarm box. In addition, you should check theinstallation environment.

11.1 Checklist for BSC6910 Cable InstallationThis lists the items and specifications for checking the installation of the BSC6910 power cables,PGND cables, and signal cables.

11.2 Checklist for the Installation of the BSC6910 GPS Antenna SystemThis lists the items and specifications for checking the installation of the BSC6910 GPS antennasystem.

11.3 Checklist for the Installation of the LMT Computer and Alarm BoxThis lists the items and specifications for checking the installation of the LMT computer and thealarm box.

11.4 Checklist for Field Cleanliness of BSC6910 InstallationThis lists the items and specifications for checking the field cleanliness of BSC6910 installation.

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11.1 Checklist for BSC6910 Cable InstallationThis lists the items and specifications for checking the installation of the BSC6910 power cables,PGND cables, and signal cables.

For details, see Checklist for the BSC6910 Cable Installation.

11.2 Checklist for the Installation of the BSC6910 GPSAntenna System

This lists the items and specifications for checking the installation of the BSC6910 GPS antennasystem.

For details, see Checklist for the Installation of the BSC6910 GPS Antenna System.

11.3 Checklist for the Installation of the LMT Computer andAlarm Box

This lists the items and specifications for checking the installation of the LMT computer and thealarm box.

For details, see Checklist for the Installation of the LMT Computer and Alarm Box.

11.4 Checklist for Field Cleanliness of BSC6910 InstallationThis lists the items and specifications for checking the field cleanliness of BSC6910 installation.

For details, see Checklist for Field Cleanliness of the Installation.

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12 Installation Illustrations

About This Chapter

This chapter describes the exploded views of cabinet, cabinet assembly diagrams, and cableconnections of cabinets.

12.1 Components of a CabinetThe components of the MPR are the same as those of the EPR. The components are subracks,air defense frame, rear cable troughs, and rack.

12.2 Cable Connections of the CabinetThis section describes the connections of the power cables, PGND cables, and signal cables inthe cabinet.

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12.1 Components of a CabinetThe components of the MPR are the same as those of the EPR. The components are subracks,air defense frame, rear cable troughs, and rack.

Figure 12-1 shows the components of a BSC6910 cabinet (N68E-22).

Figure 12-1 Components of the MPR/EPR (N68E-22)

(1) Subrack (2) Air deflector (3) Fan assembly

(4) Air defense frame (5) PEM (6) Rear cable trough

Table 12-1 describes the components of the cabinet.



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Table 12-1 Components of the cabinet

Component Configuration

Subracks l An MPR is configured with oneMain Processing Subrack (MPS)and depending on the traffic volumezero to two Extended ProcessingSubracks (EPSs).

l An EPR is configured with one tothree EPSs, depending on the trafficvolume

Air deflector Two air deflectors are configured.

Air defense frame One air defense frame is configured.

Rear cable trough Three rear cable troughs are configured.

NOTE

Subracks are numbered from bottom to top. The subrack at the bottom of a cabinet is numbered 0.

12.2 Cable Connections of the CabinetThis section describes the connections of the power cables, PGND cables, and signal cables inthe cabinet.

12.2.1 Connections of Power Cables for the Subrack and PGNDCables for the Cabinet

This section describes the connections of power cables for the subrack and PGND cables for thecabinet.

The PGND cables connect the cabinet and the ground bar in the equipment room, protecting thecabinet from electrostatic discharge. Figure 12-2 shows the connections of power cables andPGND cables for a BSC.



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Figure 12-2 Connections of power cables and PGND cables

Table 12-2 shows the connections of power cables and PGND cables for the BSC6910.



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Table 12-2 Connections of power cables and PGND cables for the BSC6910

Sequence Number Description

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,13, 14, 15, 16, 17, 18, 19, 20, 21,22, 23, 24

Power cables connecting the PDF to the subracks

25, 26, 27, 28, 29, 30 PGND cables connecting the subracks to the mountingbar

31, 32, 33 PGND cables connecting different cabinets

34, 35, 36, 37, 38, 39, 40, 41 PGND cables for cabinet doors and side panels

42 PGND cable for the cabinet

12.2.2 Connections of Signal Cables for the MPRThe signal cables for the MPR are the optical cable, straight-through cable, SFP+ high-speedcable, BITS clock cable, Y-shaped clock cable, GPS signal transmission cable, and EMU RS485communication cable.

For details about different types of signal cables, see Cables. Figure 12-3 shows the connectionsof signal cables for the MPR that is configured with one MPS and five EPSs.



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Figure 12-3 Connections of signal cables for the MPR

NOTE

The types of interface boards, installation positions of cables, and quantity of cables shown in Figure 12-3 areexamples. The actual configurations depend on the site planning.

Table 12-3 describes the connections of signal cables for the MPR.

Table 12-3 Connections of signal cables for the MPR

SequenceNumber Description

Connector Type 1/Connection Position 1


1, 2 Ethernet cableconnecting the EOMUaboard to the M2000 orLAN

RJ45/Ethernet port onthe EOMUa board inslots 10 and 11 in theMPS

RJ45/Ethernet port onthe M2000 or of the LAN



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3, 4 Ethernet cableconnecting the EOMUaboard to the M2000 orLAN

RJ45/Ethernet port onthe EOMUa board inslots 12 and 13 in theMPS

RJ45/Ethernet port onthe M2000 or of the LAN

5, 7 Y-shaped clock signalcable connecting theGCUa board to the SCUbboard

RJ45/CLKOUT port onthe GCUa board in slots12 and 13 in the MPS

RJ45/CLKIN port on theSCUb board in slot 20 inthe EPS

6, 8 Y-shaped clock signalcable connecting theGCUa board to the SCUbboard

RJ45/CLKOUT port onthe GCUa board in slots12 and 13 in the MPS

RJ45/CLKIN port on theSCUb board in slot 21 inthe EPS

9, 13 SFP+ high-speed cableconnecting SCUb boardsin different subracks

10G/10G port on theSCUb board in slot 20 ofthe MPS



10G/10G port on theSCUb board in slot 20 ofthe EPS






















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17 75-ohm coaxial cable or120-ohm twisted paircable connecting theGCUa board to the BITSclock

SMB male connector/CLKIN1 port on theGCUa board in slot 23 ofthe MPS

Connector of the BITSclock/BITS clock port

18 75-ohm coaxial cable or120-ohm twisted paircable connecting theGCUa board to the BITSclock

SMB male connector/CLKIN1 port on theGCUa board in slot 22 ofthe MPS

Connector of the BITSclock/BITS clock port

19 Optical cable connectingthe EXOUa board to thepeer device

RX/TX of the LC opticalport on the EXOUa board

ODF

43 EMU RS485communication cable

RJ45/Port on the EMU inthe MPS

DB9/Port on the EMU

12.2.3 Connections of Signal Cables for the EPRThe signal cables for the EPR are the optical cable, straight-through cable, SFP+ high-speedcable, and Y-shaped clock signal cable.

For details about different types of signal cables, see Cables. Figure 12-4 shows the connectionsof signal cables for the EPR that is configured with three EPSs.



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Figure 12-4 Connections of signal cables for the EPR

NOTE

The types of interface boards, installation positions of cables, and quantity of cables shown in Figure 12-4 areexamples. The actual configurations depend on the site planning.

Table 12-4 describes the connections of signal cables for the EPR.

Table 12-4 Connections of signal cables for the EPR




20, 24, 28 Ethernet cableconnecting theSCUb boards indifferent subracks

RJ45/10G port on the SCUbboard in slot 20 of the EPS

RJ45/10G port on theSCUb board in slot 20 ofthe EPS



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23, 27. 30 Ethernet cableconnecting theSCUb boards indifferent subracks



32 Optical cableconnecting theEXOUa board to thepeer device

RX/TX of the LC opticalport on the EXOUa board

ODF



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13 Installation Records

The table is used to record the BSC6910 hardware installation information.

For details, see Hardware Installation Records and Installation Record of the Positions ofSignal Cables.

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Documents

Bsc6910 Gsm Installation Guide(v100r015c00_03)(PDF)-En