Huawei BTS3900L, BTS3900L GSM, BTS3900L LTE, BTS3900L WCDMA Installation Manual

BTS3900L (Ver.C)

Installation Guide

Issue

Date

07

2013-11-08

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 written consent 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.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase 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 representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

Website:

Email:

Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

http://www.huawei.com

[email protected]

Issue 07 (2013-11-08) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

i

BTS3900L (Ver.C)

Installation Guide About This Document

About This Document

Purpose

This document describes the procedure for installing a BTS3900L (Ver.C) (referred to as

BTS3900L) cabinet, boards, modules, and cables. It also provides checklists for hardware installation.

Product Versions

The following table lists the product versions related to this document.

Product Name

BTS3900L

Product Version

V100R007C00

BTS3900L GSM

BTS3900L WCDMA

BTS3900L LTE

V100R014C00

V200R014C00

V100R005C00

Intended Audience

This document is intended for: l Base station installation engineers

Organization

1 Changes in BTS3900L (Ver.C) Installation Guide

This chapter describes the changes in

BTS3900L (Ver.C) Installation Guide

.

2 Preparing for Installation

This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess.



ii

BTS3900L (Ver.C)


3 Information About the Installation

This section provides important notes for the BTS3900L cabinet with -48 V AC power. Before a cabinet is installed, you must familiar with the cabinet structure, application scenario, and space requirements. This document describes how to install the BTS3900L cabinet configured with the RFUs. For details about how to install the BTS3900L cabinet configured with RFUs and RRUs, see the

BTS3900L (RFU+RRU) Installation Guide

.

4 Unpacking the Equipment

This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact.

5 Obtaining the ESN

This chapter describes how to obtain the Electronic Serial Number (ESN). The ESN is a unique identifier of a Network Element (NE). Record the ESN for later commissioning of the base station before installation.

6 Installation Process

The installation procedure mainly involves installing the cabinet and installing cables. In addition, installing optional modules according to the requirements onsite may also be included in the installation procedure.

7 Checking Installed Modules and Cables

This section describes how to check the internal modules and cables that are installed before delivery.

8 Installing the Cabinet

This chapter describes the procedure for installing the BTS3900L cabinet.

9 Installing a PGND Cable

The PGND cable is used to connect the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet.

10 (Optional) Installing the Modules

The mandatory modules in the cabinet are already installed. The optional modules can be installed on site according to different field requirements.

11 Installing the Cables

The cables in the BTS3900L cabinet are already installed. You need to install only the cables led into the cabinet and cables for optional components.

12 Installation Checklist

Check the installation items, installation environment, and cable-related items after the cabinets and devices are all installed.

13 Powering On the BTS3900L

This section describes how to power on the BTS3900L cabinet and handle the power supply failure to the components in the cabinet.



iii

BTS3900L (Ver.C)


Conventions

Symbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal injury.

Calls attention to important information, best practices and tips.

NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

General Conventions

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

Convention

Times New Roman

Boldface

Italic

Courier New

Description

Normal paragraphs are in Times New Roman.

Names of files, directories, folders, and users are in

boldface

. For example, log in as user

root

.

Book titles are in

italics

.

Examples of information displayed on the screen are in

Courier New.

Command Conventions

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



iv

BTS3900L (Ver.C)


Convention

Boldface

Italic

[ ]

{ x | y | ... }

[ x | y | ... ]

{ x | y | ... }

[ x | y | ... ]

*

*

Description

The keywords of a command line are in

boldface

.

Command arguments are in

italics

.

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

Optional items are grouped in braces and separated by vertical bars. One item is selected.

Optional items are grouped in brackets and separated by vertical bars. One item is selected or no item is selected.

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

Optional items are grouped in brackets and separated by vertical 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.

Convention

Boldface

>

Description

Buttons, menus, parameters, tabs, window, and dialog titles are 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

Key

Key 1

+

Key 2

Key 1

,

Key 2

Description

Press the key. For example, press

Enter

and press

Tab

.

Press the keys concurrently. For example, pressing

Ctrl

+

Alt

+

A

means the three keys should be pressed concurrently.

Press the keys in turn. For example, pressing

Alt

,

A

means the two keys should be pressed in turn.

Issue 07 (2013-11-08)

Mouse Operations

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

Huawei Proprietary and Confidential


v

BTS3900L (Ver.C)

Installation Guide

Action

Click

Double-click

Drag

About This Document

Description

Select and release the primary mouse button without moving the pointer.

Press the primary mouse button twice continuously and quickly without moving the pointer.

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



vi

BTS3900L (Ver.C)

Installation Guide Contents

Contents

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

1 Changes in BTS3900L (Ver.C) Installation Guide..................................................................1

2 Preparing for Installation.............................................................................................................5

2.1 Document Preparations...................................................................................................................................................6

2.2 Preparing Tools and Meters............................................................................................................................................6

2.3 Skills and Requirements for Onsite Personnel...............................................................................................................7

3 Information About the Installation...........................................................................................8

3.1 Configurations of the BTS3900L Cabinet......................................................................................................................9

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured).................................................................11

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and RFUs Configured)...........................................................12

3.4 Installation Clearance and Position Requirements.......................................................................................................14

4 Unpacking the Equipment.........................................................................................................17

5 Obtaining the ESN......................................................................................................................19

6 Installation Process.....................................................................................................................21

7 Checking Installed Modules and Cables................................................................................23

8 Installing the Cabinet.................................................................................................................26

8.1 Installing the Cabinet Without a Base..........................................................................................................................27

8.2 Installing the Cabinet with Base on the Concrete Floor...............................................................................................32

8.3 Installing a Cabinet with Base on an ESD Floor..........................................................................................................36

9 Installing a PGND Cable...........................................................................................................43

10 (Optional) Installing the Modules.........................................................................................45

10.1 Installing the GPS surge protector..............................................................................................................................46

10.2 Installing the GATM and Bias-Tee............................................................................................................................49

10.3 Installing the DCDU-11B...........................................................................................................................................52

10.4 Installing the BBU Case.............................................................................................................................................56

10.5 Installing the BBU Components.................................................................................................................................57

11 Installing the Cables.................................................................................................................61

11.1 Cabling Requirements................................................................................................................................................63



vii

BTS3900L (Ver.C)

Installation Guide Contents

11.2 Cable Routes...............................................................................................................................................................69

11.3 Installing the Power Cables........................................................................................................................................72

11.3.1 Standard Powering Scenario....................................................................................................................................72

11.3.2 Small Configuration Scenario I: 2x80A in Upper and Lower Shelves...................................................................74

11.3.3 Small Configuration Scenario II: 2x80A in Lower Shelf in Parallel.......................................................................76

11.3.4 Small Configuration Scenario III: 2x80A in Upper Shelf in Parallel......................................................................79

11.4 Installing a BBU Power Cable....................................................................................................................................82

11.5 (Optional) Installing RRU Power Cables...................................................................................................................83

11.6 Installing the Transmission Cables.............................................................................................................................86

11.6.1 Installing an E1/T1 Cable........................................................................................................................................86

11.6.2 Installing an FE/GE Optical Cable..........................................................................................................................87

11.6.3 Installing an FE/GE Cable.......................................................................................................................................89

11.7 Installing the Monitoring Signal Cables.....................................................................................................................90

11.7.1 (Optional) Installing the Inter-BBU Signal Cable...................................................................................................90

11.7.2 (Optional)Installing the Monitoring Signal Cable for the EMU.............................................................................95

11.7.3 Installing a BBU Alarm Cable.................................................................................................................................96

11.8 Installing an RF Jumper..............................................................................................................................................97

11.9 Installing the CPRI Cable...........................................................................................................................................98

11.10 (Optional)Installing a CPRI Optical Fiber..............................................................................................................100

12 Installation Checklist..............................................................................................................104

13 Powering On the BTS3900L...................................................................................................107



viii

BTS3900L (Ver.C)

Installation Guide 1 Changes in BTS3900L (Ver.C) Installation Guide

1

Changes in BTS3900L (Ver.C) Installation

Guide

This chapter describes the changes in

BTS3900L (Ver.C) Installation Guide

.

07 (2013-11-08)

This is the seventh official release.

Compared with issue 06 (2013-08-23), no topic is added.

Compared with issue 06 (2013-08-23), this issue incorporates the following changes:

Topic

l

3.1 Configurations of the BTS3900L

Cabinet

l

3.3 Application Scenario of the

BTS3900 Cabinet (RRUs and RFUs

Configured)

Change Description

Deleted the description of that a DCDU-11B or

DCDU-12B can be configured in the

BTS3900L (Ver.C) cabinet.

Installing a DCDU-11B

11.5 (Optional) Installing RRU Power

Cables

Deleted the steps of installing a DCDU-12B on the wall.

l

Deleted the description of installing RRU power cables when a DCDU-12B is installed to supply power.

l Added the steps of installing a ground clip to ground RRU power cables near the feeder window when the RRUs are installed outdoors.

Compared with issue 06 (2013-08-23), the following topic is deleted: l Installing a DCDU-11B or DCDU-12B in a Cabinet



1

BTS3900L (Ver.C)


06 (2013-08-23)

This is the sixth official release.

Compared with issue 05 (2013-05-27), this issue adds the following contents: l Installing a DCDU-11B or DCDU-12B in a Cabinet l

11.7.3 Installing a BBU Alarm Cable


Topic Change Description

l


Cabinet

l

3.3 Application Scenario of the

BTS3900 Cabinet (RRUs and RFUs

Configured)

Added the description of that a DCDU-11B or

DCDU-12B can be configured in the

BTS3900L (Ver.C) cabinet.

Installing a DCDU-11B

11.5 (Optional) Installing RRU Power

Cables

Added the steps of installing a DCDU-12B on the wall.

Added the description of installing RRU power cables when a DCDU-12B is installed to supply power.

Compared with issue 05 (2013-05-27), no information is deleted.

05 (2013-05-27)

This is the fifth official release.

Compared with issue 04 (2012-12-30), no topic is added or deleted.


Topic Change Description

11.7.1 (Optional) Installing the Inter-

BBU Signal Cable

Modified the steps of binding and routing the inter-BBU signal cable.

04 (2012-12-30)

This is the fourth official release.

Compared with 03 (2012-11-08), no topic is added.

Compared with 03 (2012-11-08), this issue incorporates the following change:

Topic

10.5 Installing the BBU Components


Added the precautions for installing boards.



2

BTS3900L (Ver.C)


Topic

11.7.1 (Optional) Installing the Inter-BBU

Signal Cable


Modified the description of BBU interconnection signal cables in the prerequisites.

Compared with 03 (2012-11-08), no information is deleted.

03 (2012-11-08)

This is the third commercial release.

Compared with 02 (2012-06-20), no topic is added.

Compared with 02 (2012-06-20), this issue incorporates the following change:

Content Change Description

11.10 (Optional)Installing a CPRI Optical

Fiber

Added a picture for routing CPRI fiber optic cables.

11.2 Cable Routes

Optimized the description of the cable routing policies.

Compared with 02 (2012-06-20), no topic is deleted.

02 (2012-06-20)

This is the second official release.

Compared with 01 (2012-04-25), this issue adds the following contents: l (Optional)Installing the RRU Input Power Cable l

11.10 (Optional)Installing a CPRI Optical Fiber

Compared with 01 (2012-04-25), no topic is changed.

Compared with 01 (2012-04-25), no topic is deleted.

01 (2012-04-25)

This is the first commercial release.

Compared with Draft B (2012-03-20), no topic is added.

Compared with Draft B (2012-03-20), this issue incorporates the following change:

Content Change Description

11.7.1 (Optional) Installing the Inter-BBU

Signal Cable

Added the method to identify the type of optical modules.



3

BTS3900L (Ver.C)


Compared with Draft B (2012-03-20), no topic is deleted.

Draft B (2012-03-20)

This is the Draft release.

Compared with Draft A (2012-02-10), no topic is added.

Compared with Draft A (2012-02-10), this issue incorporates the following changes:

Content


Cabinet


Updated the figure of cabinet.

3.2 Application Scenario of the BTS3900L

Cabinet (Only RFUs Configured)

The whole document

Optimized the figures of cabinet configuration.

Made some editorial changes.

Compared with Draft A (2012-02-10), no topic is deleted.

Draft A (2012-02-10)

This is the Draft release.

Compared with MBTS V100R004C00, WCDMA-NodeB V200R013C00, GSM-BTS

V100R013C00, eNodeB V100R004C00, this issue adds the following topic: l

2.1 Document Preparations

l

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

l

11.7.1 (Optional) Installing the Inter-BBU Signal Cable

l

13 Powering On the BTS3900L


V100R013C00, eNodeB V100R004C00, this issue incorporates the following change:

Content

The whole document


Reorganized the document and optimized some descriptions and figures.


V100R013C00, eNodeB V100R004C00, this issue deletes the following topic: l Performing Power-On Check



4

BTS3900L (Ver.C)

Installation Guide 2 Preparing for Installation

2

Preparing for Installation

About This Chapter

This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess.

2.1 Document Preparations

This section describes the reference documents that must be ready before the installation.

2.2 Preparing Tools and Meters

This section describes the tools and meters that are required before installation.

2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite personnel must be familiar with correct operation methods and safety precautions.



5

BTS3900L (Ver.C)

Installation Guide 2 Preparing for Installation

2.1 Document Preparations

This section describes the reference documents that must be ready before the installation.

l Before the installation, you must familiar with the following reference documents:

– BTS3900L (Ver.C) Hardware Description

– Safety Information l During the installation, you must familiar with the following reference document:

–

Installation Reference

2.2 Preparing Tools and Meters

This section describes the tools and meters that are required before installation.

Marking pen Phillips screwdriver (M3 to

M6)

Diagonal pliers

Flat-head screwdriver (M3 to

M6)

Combination wrench

(capacity 32 mm)

Socket wrench Torque wrench

Power cable crimping tool RJ11 crimping tool Cable cutter

Rubber mallet Soldering iron Wire stripper

Hammer drill (Ø16) Heat gun Level



6

BTS3900L (Ver.C)

Installation Guide

Multimeter Measuring tape

2 Preparing for Installation

Vacuum cleaner

ESD wrist strap ESD gloves Torque screwdriver

Protective gloves Hydraulic pliers Utility knife

2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite personnel must be familiar with correct operation methods and safety precautions.

Before the installation, pay attention to the following items: l The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods.

l The number of onsite personnel depends on the engineering schedule and installation environment. Generally, only three to five onsite personnel are necessary.



7

BTS3900L (Ver.C)

Installation Guide 3 Information About the Installation

3

Information About the Installation


This section provides important notes for the BTS3900L cabinet with -48 V AC power. Before a cabinet is installed, you must familiar with the cabinet structure, application scenario, and space requirements. This document describes how to install the BTS3900L cabinet configured with the RFUs. For details about how to install the BTS3900L cabinet configured with RFUs and RRUs, see the

BTS3900L (RFU+RRU) Installation Guide

.

3.1 Configurations of the BTS3900L Cabinet

This section describes the interior and components of the BTS3900L cabinet.

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if only RFUs are configured in a BTS3900L cabinet.

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if both RRUs and RFUs are configured in a BTS3900L cabinet.

3.4 Installation Clearance and Position Requirements

The installation of cabinets must meet the requirements of the proper design, practical installation, and elegant layout.



8

BTS3900L (Ver.C)


3.1 Configurations of the BTS3900L Cabinet

This section describes the interior and components of the BTS3900L cabinet.

Figure 3-1

shows the interior and

Table 3-1

describes the components of the BTS3900L cabinet.

Figure 3-1

Interior of the BTS3900L Cabinet

Issue 07 (2013-11-08)

Table 3-1

Components in the BTS3900L cabinet

No.

Module Optional or

Mandatory

Maximum

Quantity

1 Filler panel Optional -

Remark

If a slot in the RFU subrack is vacant, insert a filler panel into the slot. This ensures normal ventilation of the cabinet.



9

BTS3900L (Ver.C)

Installation Guide

7

8

3

4

5

6

No.

2

9

3 Information About the Installation

Module

RFU

Fan Assembly

Air intake vent

DCDU-11A

BBU

Cable trough

BBU

Remaining space

Optional or

Mandatory

Mandatory

Maximum

Quantity

12

Mandatory

Mandatory

Mandatory

Mandatory

Mandatory

Optional

Optional

-

-

-

2

2

1

1

Remark

The RFU modulates and demodulates baseband signals and RF signals, processes data, and combines and divides signals.

Fan assembly dissipates the heat from the cabinet.

-

-

-

BBU3900 processes the baseband signals and enables interaction between the base station and the BSC or RNC.

This 2 U space can house a

BBU in triple-mode base stations. It is recommended that this space be reserved even when only one BBU is installed.

This 2 U space can house the

GATM or transmission equipment. The GATM is preferentially installed in this space and is supplied with power by the DCDU-01. If there is no GATM, the transmission equipment is installed in this space.

NOTE

The transmission equipment is preferentially installed outside the cabinet. However it can be installed at the bottom of the cabinet under some special condition (e.g.: space constraint). The following requirements must be satisfied: l The transmission equipment must be able to work properly at a temperature equal to or higher than

55°C.

l The transmission equipment is fed with external power supply since DCDU-11A does not support power supply to transmission equipment.



10

BTS3900L (Ver.C)


3.2 Application Scenario of the BTS3900L Cabinet (Only

RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if only RFUs are configured in a BTS3900L cabinet.

Cabinet Configuration Rules

l

A maximum of 12 RFUs can be configured in a single site. An additional site is required is number of RFU exceeds twelve.

l The BTS3900L cabinet support neither side-by-side nor stack installation.

l

In the application scenario in single- or dual-mode, only one BBU can be configured and it is configured in the upper part of the cabinet by default.

l In a triple-mode scenario, two BBUs are configured.

l

In a triple-mode scenario, BBU 0 is the root BBU and BBU 1 is the leaf BBU.

Cabinet Configurations for a Single- or Dual-Mode Scenario

Figure 3-2

show the configurations of the BTS3900L in a single- or dual-mode scenario.

Figure 3-2

BTS3900L in a single- or dual-mode scenario

Issue 07 (2013-11-08)

1. BTS3900L (GATM not configured) 2. BTS3900L (GATM configured)



11

BTS3900L (Ver.C)


Cabinet Configurations for a Triple-Mode Scenario

Figure 3-3

shows the configurations of the BTS3900L cabinet in a triple-mode scenario.

Figure 3-3

BTS3900L in a triple-mode scenario

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and

RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if both RRUs and RFUs are configured in a BTS3900L cabinet.

Rules for Configuring the Cabinet

l In a single-mode or dual-mode scenario, only one BBU is configured.

l

In a triple-mode scenario, two BBUs are configured. BBU 0 is the root BBU and BBU 1 is the leaf BBU.

l A BTS3900L base station supports a maximum of 12 RFUs and 6 RRUs. If there are more than 12 RFUs and 6 RRUs, one or more base stations need to be added.



12

BTS3900L (Ver.C)

Installation Guide 3 Information About the Installation l When both the RFU and RRU support the GSM mode, the BBU3900 must be configured with a GTMUb. In addition, the RFUs supporting the GSM mode are connected to the

GTMUb, and the RRUs supporting the GSM mode are connected to the UBRI.

NOTE

When a BTS3900L (Ver.C) is configured with RFUs and RRUs, a DCDU-11B is installed on a wall to distribute power to RRUs.

Cabinet Configurations for a Single- or Dual-Mode Base Station

Figure 3-4

shows the interior of a single- or dual-mode BTS3900L.

Figure 3-4

Single- or dual-mode base station

Cabinet Configurations for a Triple-Mode Base Station

Figure 3-5

shows the interior of a triple-mode BTS3900L..



13

BTS3900L (Ver.C)

Installation Guide

Figure 3-5

Triple-mode base station


3.4 Installation Clearance and Position Requirements

The installation of cabinets must meet the requirements of the proper design, practical installation, and elegant layout.

Installation Clearance Requirements

The clearance requirements of the BTS3900L cabinets are as follows: l The cabinet can be installed with its back against the wall.

l The cabinet can be installed with one side against the wall.

l

At least 800 mm in front of the cabinet is reserved for maintenance.

l At least 200 mm on top of the cabinet is reserved for cabling.

Figure 3-6

shows the cabinet installation clearance requirements (unit: mm).



14

BTS3900L (Ver.C)

Installation Guide

Figure 3-6

Cabinet installation clearance requirements


Cabinet Layout Requirements

The layout principles of the BTS3900L cabinets are as follows: l The cabinets are as close to the feeder window as possible so that the feeder is used less.

l The cabinets are installed in a row in the same equipment room for easy cabling.

l No space is reserved for the same cabinets if they are installed next to each other.

Figure 3-7

shows the typical cabinet layout (unit: mm).



15

BTS3900L (Ver.C)

Installation Guide

Figure 3-7

Typical Cabinet Layout




16

BTS3900L (Ver.C)

Installation Guide 4 Unpacking the Equipment

4

Unpacking the Equipment

This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact.

Context

NOTE

When transporting, moving, or installing the equipment, components, or parts, you must: l Prevent them from colliding with doors, walls, shelves, or other objects.

l Wear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweatsoaked gloves, or dirty gloves.

NOTICE

l After a cabinet or an BBU is unpacked, it must be powered on within 7 days.

l After an RRU is unpacked, it must be powered on within 24 hours.

Procedure

Step 1

Check the total number of articles in each case according to the packing list.

If ...

Then ...

The total number tallies with the packing list

Go to

Step 2

.

The total number does not tally with the packing list

Find out the cause and report any missing articles to the local Huawei office.

Step 2

Check the exterior of the packing case.



17

BTS3900L (Ver.C)

Installation Guide 4 Unpacking the Equipment

If ...

The outer packing is intact

Then ...

Go to

Step 3

.

The outer packing is severely damaged or soaked

Find out the cause and report it to the local

Huawei office.

The shockwatch label is red

Stop unpacking the wooden crate, and then report it to the transportation company.

Step 3

Check the type and quantity of the equipment in the cases according to the packing list.

If ...

Then ...

Types and quantity of the article tally with those on the packing list

Sign the

Packing List

with the customer.

Either shipment shortage, wrong shipment or damaged articles.

Report to the local Huawei office.

CAUTION

l To protect the equipment and prevent damage to the equipment, you are advised to keep the unpacked equipment and packing materials indoors, take photos of the stocking environment, packing case or carton, packing materials, and any rusted or eroded equipment, and then file the photos.

l

Verify that the insulation layers of all RRU cables are intact. If the insulation layers are damaged or broken, water will penetrate into the cables, which may cause damages to RRUs or human injury.

----End



18

BTS3900L (Ver.C)

Installation Guide 5 Obtaining the ESN

5

Obtaining the ESN

This chapter describes how to obtain the Electronic Serial Number (ESN). The ESN is a unique identifier of a Network Element (NE). Record the ESN for later commissioning of the base station before installation.

Procedure

Step 1

Record the ESN on the BBU.

l If there is not a label on the FAN unit of the BBU, you must record the ESN and site

information that is printed on a mounting ear of the BBU.

Figure 5-1

shows the position of

the ESN.

l If there is a label on the FAN unit of the BBU, the ESN is printed on the label and a mounting ear of the BBU. In this case, you must take the label and record the site information on the

side labeled Site, as shown in

Figure 5-2

.

Figure 5-1

Obtaining the ESN (1)



19

BTS3900L (Ver.C)

Installation Guide

Figure 5-2

Obtaining the ESN (2)

5 Obtaining the ESN

Step 2

Report the ESN to the engineer for the commissioning of the base station.

NOTE

If multiple BBUs need to be configured on site, record the ESN for each BBU and report them to the engineer responsible for base station commissioning.

----End



20

BTS3900L (Ver.C)

Installation Guide 6 Installation Process

6

Installation Process

The installation procedure mainly involves installing the cabinet and installing cables. In addition, installing optional modules according to the requirements onsite may also be included in the installation procedure.

NOTE

In a triple-mode scenario, if a cabinet is configured with two BBU, the BBU case, power cable, and CPRI cable must be installed on site.

Figure 6-1

shows the installation procedure.



21

BTS3900L (Ver.C)

Installation Guide

Figure 6-1

Installation procedure

6 Installation Process



22

BTS3900L (Ver.C)

Installation Guide 7 Checking Installed Modules and Cables

7

Checking Installed Modules and Cables

This section describes how to check the internal modules and cables that are installed before delivery.

Checklist for the Modules

Ensure that the modules are securely installed in the cabinet. Tighten the screws if necessary.

Checklist for the Cables

Check whether the power cables are securely connected, and the screws are tightened on the cables in the cabinet by referring to

Figure 7-1

and

Table 7-1

.

Figure 7-1

Power cables in the cabinet



23

BTS3900L (Ver.C)


Table 7-1

Power cables in the cabinet

SN

P0 to

P5

P6

P7 and

P8

Cable

RFU power cable

Power cable for the fan box

BBU power cable

One End

Connector

3V3 power connector

3V3 power connector

3V3 power connector

Installation

Position

PWR port on the RFU

-48V port on the fan box

PWR port on the UPEU

The Other End

Connector Installation

Position

Tool-less female power connector

(pressfit type)

Ports LOAD0 to LOAD5 on the

DCDU-11A


(pressfit type)


(pressfit type)

LOAD6 port on the

DCDU-11A

LOAD7 and

LOAD8 ports on the

DCDU-11A

Check whether the power cables are securely connected, and the screws are tightened on the cables in the cabinet by referring to

Figure 7-2

and

Table 7-2

.

Figure 7-2

Signal cables in the cabinet



24

BTS3900L (Ver.C)


Table 7-2

Signal cables in the cabinet

SN

S1

Cable One End

Connector

Monitoring signal cable for the fan box

ELU signal cable

RJ45 connector

RJ45 connector

Installation

Position

COM IN port on the fan box

The Other End

Connector Installation

Position

RJ45 connector

MON0 port on the UPEU

S2

S3 Signal cable between cascaded fan boxes

RJ45 connector

SENSOR port on the fan box

COM OUT port on the upper fan box.

RJ45 connector

RJ45 connector

Electronic

Labeling Unit

(ELU)

COM IN port on the lower fan box l The CPRI cable connected to BBU0, which is installed in the upper part of the cabinet, is installed before delivery. Ensure that the CPRI cable is securely connected. For details about how to insert and remove CPRI cables, see Inserting and Removing CPRI Cables.

l The CPRI cable connected to BBU1, which is installed in the lower part of the cabinet, is not installed before delivery. The CPRI cable must be installed onsite. For details about how to install the CPRI cable, see Installing the CPRI Cable.



25

BTS3900L (Ver.C)

Installation Guide 8 Installing the Cabinet

8

Installing the Cabinet


This chapter describes the procedure for installing the BTS3900L cabinet.

8.1 Installing the Cabinet Without a Base

This section describes the procedure and precautions to be taken for installing a cabinet without a base.

8.2 Installing the Cabinet with Base on the Concrete Floor

This section describes the procedure and precautions for installing the base and the cabinet on the concrete floor.

8.3 Installing a Cabinet with Base on an ESD Floor

This section describes the procedure and precautions for installing the base and the cabinet on the ESD floor.



26

BTS3900L (Ver.C)


8.1 Installing the Cabinet Without a Base

This section describes the procedure and precautions to be taken for installing a cabinet without a base.

Prerequisites

A marker, a level, a multimeter, and a vacuum cleaner are available.

A rubber mallet, a hammer drill (Φ16), a screwdriver and a torque wrench are available.

Context

The BTS3900L cabinet is installed without a base by default.

The cabinet door can be removed before the cabinet is installed for easy operations.

Procedure

Step 1

Determine the mounting holes for the cabinet based on the anchor holes on the marking template, as shown in

Figure 8-1

.

Figure 8-1

Positioning the mounting holes for the cabinet

(1) Anchor hole (2) Concrete floor (3) Marking template

Step 2

Drill holes at the anchor points, and then install the expansion bolt assemblies, as shown in

Figure 8-2

.

1.

Use a hammer drill (Φ16) to drill holes at the anchor points, and ensure that the depth of each hole ranges from 52 mm to 60 mm.



27

BTS3900L (Ver.C)


CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.

After disassembling the expansion bolt assembly, ensure that the top of the expansion tube is on the same level as the floor.

2.

Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing is too wide or too narrow, locate and drill holes again.

3.

Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole vertically.

4.

Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into the hole.

5.

Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt assembly in sequence.

Figure 8-2

Drilling a hole and installing an expansion bolt assembly

(1) M12x60 bolt (2) Spring washer (3) Flat washer (4) Expansion tube

Step 3

Remove the cabinet door to facilitate operations, as shown in

Figure 8-3

.

1.

Disconnect the equipotential cable from the lower part of the door.

2.

Rotate the spring pin 90° to the left and press the pin.



28

BTS3900L (Ver.C)

Installation Guide

Figure 8-3

Removing the cabinet door

8 Installing the Cabinet

Step 4

Move the cabinet on the installation holes, place the expansion bolt assemblies into the holes, and use a socket wrench to partially tighten them.

Step 5

Use a level to check the cabinet level, as shown in

Figure 8-4

. If the bubble is not at the center

of the level, adjust the cabinet level through the adjusting bolts.



29

BTS3900L (Ver.C)

Installation Guide

Figure 8-4

Checking the cabinet level


Step 6

Test the insulation between the cabinet and the expansion bolts.

1.

Set the multimeter to the megohm position (MΩ).

2.

Measure the resistance between the cabinet and the four expansion bolts, as shown in

Figure 8-5

.

Figure 8-5

Measuring the resistance

Issue 07 (2013-11-08) l If the resistance is less than five megohms, you can infer that the cabinet is not insulated from the floor. Go to step

Step 6.3

.

l If the resistance is greater than or equal to five megohms, you can infer that the cabinet is insulated from the floor. End the test.

3.

Decompose the expansion bolt assemblies, and check whether insulating washers are missing or damaged.



30

BTS3900L (Ver.C)

Installation Guide 8 Installing the Cabinet l If insulating washers are missing or damaged, reinstall them, and then adjust the cabinet level.

l If no insulating washers are missing or damaged, check whether the multimeter is faulty or whether the setting is correct.

Step 7

Place the cabinet on the mounting holes, install the expansion bolts, and then tighten the bolt

until the tightening torque reaches 45 N·m, as shown

Figure 8-6

.

Figure 8-6

Securing the cabinet

Step 8

Install the cabinet door, as shown in

Figure 8-7

.

1.

Align the spring pin with the hole, rotate the pin to the right until it is tightly pressed by the door.

2.

Install the equipotential cable on the door.



31

BTS3900L (Ver.C)

Installation Guide

Figure 8-7

Installing the cabinet door


----End

8.2 Installing the Cabinet with Base on the Concrete Floor

This section describes the procedure and precautions for installing the base and the cabinet on the concrete floor.

Prerequisites





32

BTS3900L (Ver.C)


Context

When installing a BTS3900L on a base, use a marking template matching the base to determine the positions of the holes for installing the cabinet.

Procedure

Step 1

Determine the position of the cabinet by referring to the marking template, as shown in

Figure

8-8

.

Figure 8-8

Positioning the cabinet

(1) Anchor hole (2) Concrete floor (3) Marking template

Step 2

Drill holes at the anchor points, and then install the expansion bolt assemblies, as shown in

Figure 8-9

.

1.

Use a hammer drill (Φ16) to drill holes at the anchor points, and ensure that the depth of each hole ranges from 52 mm to 60 mm.



33

BTS3900L (Ver.C)


CAUTION


After disassembling the expansion bolt assembly, ensure that the top of the expansion tube is on the same level as the floor.

2.


3.

Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole vertically.

4.

Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into the hole.

5.

Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt assembly in sequence.

Figure 8-9

Drilling a hole and installing an expansion bolt assembly

(1) M12x60 bolt (2) Spring washer (3) Flat washer (4) Expansion tube

Step 3

Install the base and adjust the base level.

1.

Place the insulating spacer and the base on the floor, align the mounting holes in the base and in the insulating spacers with the holes of the expansion bolts in the floor, and then use

four M12x60 bolts to secure the base, as shown in

Figure 8-10

.



34

BTS3900L (Ver.C)

Installation Guide

Figure 8-10

Fixing the base


(1) M12x60 bolt

(4) Insulating washer

(2) Spring washer

(5) Insulating spacers -

(3) Flat washer

2.

Place the level on the top plane of the base to check the base level, as shown in

Figure

8-11

. If the bubble is not in the middle of the level, adjust the base level through the adjusting bolts.

Figure 8-11

Checking the base level

(1) Adjusting bolt (2) Level

Step 4

Test the insulation between the base and the expansion bolt.

1.


2.

Measure the resistance between the base and the four expansion bolts, as shown in

Figure

8-12

.



35

BTS3900L (Ver.C)


Figure 8-12

Measuring the resistance between the base and the expansion bolt l If the resistance is less than five megohms, you can infer that the base is not insulated from the floor. Go to step

4.c

.

l

If the resistance is greater than or equal to five megohms, you can infer that the base is insulated from the floor. End the test.

3.

Disassemble the expansion bolt assembly, and check whether insulating washers are missed or damaged.

l If insulating washers are missed or damaged, reinstall them, and then adjust the base level.

l If no insulating washers are missed or damaged, check whether the multimeter is faulty or whether the setting is correct.

Step 5

Slide the cabinet along the base to ensure that the back of the cabinet is aligned with the back of the base. Use a torque wrench to tighten the two bolts in the front of the cabinet until the

fastening torque reaches 45 N·m, as shown in

Figure 8-13

.

Figure 8-13

Installing the cabinet

----End

8.3 Installing a Cabinet with Base on an ESD Floor

This section describes the procedure and precautions for installing the base and the cabinet on the ESD floor.



36

BTS3900L (Ver.C)


Prerequisites



Context

Figure 8-14

shows the support for installing the ESD floor.

Figure 8-14

Support for installing the ESD floor

Issue 07 (2013-11-08)

(1) Mounting holes for the ESD floor (2) Frames (3) Mounting hole for the concrete floor

The support for installing the ESD floor on which the cabinet is installed is of two types: support

with fixed height and support with adjustable height.

Table 8-1

lists the relations between the two types of supports and the height of the ESD floor.

Table 8-1

Height of the support for installing the ESD floor

Type of the Support Height of the ESD Floor (Unit: mm)

Support with fixed height 296 to 495

Support with adjustable height

At least 120; adjustable according to the height of the floor

NOTE

Height of the ESD floor refers to the spacing between the concrete floor and the upper surface of the ESD floor.



37

BTS3900L (Ver.C)


Procedure

Step 1

Determine the installation position of the cabinet on the ESD floor. See

Step 1

in the section

Installing a Cabinet with Base on a Concrete Floor

.

Step 2

Drill holes on the ESD floor.

1.

Use a hammer drill with bit 16 to drill holes at the anchor points. The holes should penetrate

the ESD floor, as shown in

Figure 8-15

.

Figure 8-15

Drilling a hole on the ESD floor

(1) ESD floor

CAUTION


2.


Step 3

Position the support.

1.

Place the support under the ESD floor, and then use bolts to secure the ESD floor on the

support temporarily, as shown in

Figure 8-16

.



38

BTS3900L (Ver.C)


Figure 8-16

Positions of the access holes in the support and holes in the ESD floor

(1) Mounting holes for the ESD floor (2) ESD floor (3) Mounting hole for the concrete floor

2.

Mark the positions of the mounting holes on the concrete floor, as shown in

Figure 8-17

.

Figure 8-17

Marking the positions of the mounting holes

Issue 07 (2013-11-08)

(1) Mounting hole for the concrete floor

(2) Concrete floor



39

BTS3900L (Ver.C)


3.

Use a measuring tape to measure the inter-hole spacing, and ensure that the four holes serve as the vertices of a rectangle.

Step 4

Drill holes at the anchor points on the concrete floor, and then install expansion bolt assemblies.

For details, see

Step 2

in the section

Installing a Cabinet with Base on a Concrete Floor

.

Step 5

Secure the support for installing the ESD floor.

Use M12x60 bolts, spring washers, and flat washers to secure the support for installing the ESD

floor on the concrete floor. Tighten the bolts until the fastening torque reaches 45 N·m.

Figure

8-18

shows how to secure the support for installing the ESD floor.

Figure 8-18

Securing the supports for installing the ESD floor

(1) M12x60 bolt (2) Spring washer (3) Flat washer

Step 6

Remove the bolts secured temporarily according to

Step 3.a

.

Step 7

Install the base and adjust the base level.

1.

Place the insulating spacer and the base on the floor, align the mounting holes in the base and in the insulating spacers with the holes of the expansion bolts in the floor, and then use

four M12x60 bolts to secure the base, as shown in

Figure 8-19

.



40

BTS3900L (Ver.C)

Installation Guide

Figure 8-19

Fixing the base


(1) M12x60 bolt

(4) Insulating washer

(2) Spring washer

(5) Insulating spacers -

(3) Flat washer

2.

Place the level on the top plane of the base to check the base level, as shown in

Figure

8-20

. If the bubble is not in the middle of the level, adjust the base level through the adjusting bolts.

Figure 8-20

Checking the base level

(1) Adjusting bolt (2) Level

Step 8

Test the insulation between the base and the expansion bolt.

1.


2.

Measure the resistance between the base and the four expansion bolts, as shown in

Figure

8-21

.



41

BTS3900L (Ver.C)


Figure 8-21

Measuring the resistance between the base and the expansion bolt l If the resistance is less than five megohms, you can infer that the base is not insulated from the floor. Go to step

4.c

.

l If the resistance is greater than or equal to five megohms, you can infer that the base is insulated from the floor. End the test.

3.

Disassemble the expansion bolt assembly, and check whether insulating washers are missed or damaged.

l If insulating washers are missed or damaged, reinstall them, and then adjust the base level.

l If no insulating washers are missed or damaged, check whether the multimeter is faulty or whether the setting is correct.

Step 9

Slide the cabinet along the base to ensure that the back of the cabinet is aligned with the back of the base. Use a torque wrench to tighten the two bolts in the front of the cabinet until the

fastening torque reaches 45 N·m, as shown in

Figure 8-22

.

Figure 8-22

Installing the cabinet

----End



42

BTS3900L (Ver.C)

Installation Guide 9 Installing a PGND Cable

9

Installing a PGND Cable

Prerequisites

Tools, such as a Phillips screwdriver, cable cutter, and multi-purpose crimping tool, are ready.

Context

The PGND cable is used to connect the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet.

The following table lists the specifications of a PGND cable.

Table 9-1

Specifications of a PGND cable

Cable Connector

PGND cable OT terminal (M8)

Cross-Sectional

Area

l

1x160 A: 25 mm

2

(0.039 in.

2

) l

2x80 A: 16 mm

2

(0.025 in.

2

)

Color

Green and yellow

Procedure

Step 1

Prepare a PGND cable.

1.

Cut the PGND cable to the required length according to the actual cable route.

2.

Add an OT terminal to each end of the cable by referring to Assembling the OT Terminal and the Power Cable.

Step 2

Install the PGND cable.

1.

Connect one end of the PGND cable to the ground bar on the internal panel inside the

BTS3900L, and then use screws to secure the OT terminals of the PGND cable, as shown in

Figure 9-2

.



43

BTS3900L (Ver.C)

Installation Guide 9 Installing a PGND Cable

NOTE

When installing a PGND cable, tightly press the OT terminal properly, as shown in

Figure 9-1

.

Figure 9-1

Installing an OT terminal

2.

Connect the other end of the PGND cable to the external ground bar, as shown in

Figure

9-2

.

Figure 9-2

Installing the PGND cable

(1) OT terminal (M8) (2) External ground bar

Step 3

Lay out the cable by referring to

11.1 Cabling Requirements

, and then use cable ties to bind

the cable.

Step 4

Label the cables by referring to Attaching a Cable-Tying Label.

----End



44

BTS3900L (Ver.C)

Installation Guide 10 (Optional) Installing the Modules

10

(Optional) Installing the Modules


The mandatory modules in the cabinet are already installed. The optional modules can be installed on site according to different field requirements.

10.1 Installing the GPS surge protector

This section describes the procedure and precautions for installing the GPS surge protector.

10.2 Installing the GATM and Bias-Tee

This describes the procedures and precautions for the installation of the GATM and Bias-Tee when they are used together with the DRFU.

10.3 Installing the DCDU-11B

When an indoor base station is configured with both RFUs and RRUs, a DCDU-11B (DCDU for short) can be installed on a wall and its power cables can be connected to supply power to

RRUs.

10.4 Installing the BBU Case

This section describes the procedure for installing a BBU case.

10.5 Installing the BBU Components

This section describes how to install the boards into the BBU and SLPU.



45

BTS3900L (Ver.C)


10.1 Installing the GPS surge protector

This section describes the procedure and precautions for installing the GPS surge protector.

Context

NOTE

A satellite card needs to be installed onsite only for a USCU that supports the dual-satellite mode.

Procedure

Step 1

Optional:

Loosen the two M3 screws on the panel, and then pull out the USCU, as shown in

Figure 10-1

.

Figure 10-1

Removing the USCU.

Step 2 Optional:

Install a satellite card on the USCU, as shown in

Figure 10-2

.

1.

Remove the three M1.6 screws from the USCU.

2.

Align the mounting holes on the satellite card with the bolts on the USCU.

3.

Tighten the three M1.6 screws that were removed in

Step 2.1

to 0.1 N·m.

4.

Connect one end of the RF jumper to the RF port on the satellite card and the other end to the GPS port on the USCU.

NOTICE

There are six mounting holes on the satellite card. You need to install only three screws on the

receiver, as shown in

Figure 10-2



46

BTS3900L (Ver.C)

Installation Guide

Figure 10-2

Installing the satellite card on the USCU

10 (Optional) Installing the Modules

(1) Satellite card (2) RF jumper

Step 3

Optional:

Install the USCU equipped with the satellite card into the BBU, and tighten the screws on the USCU to 0.6 N·m.

Step 4

Install one end of the GPS clock signal cable at the top of the cabinet and connect the other end to the

GPS

port on the USCU, as shown in

Figure 10-3

.



47

BTS3900L (Ver.C)

Installation Guide

Figure 10-3

Installing the GPS clock signal cable


Step 5

Install the GPS surge protector, as shown in

Figure 10-4

.

Figure 10-4

Installing the GPS surge protector

NOTE

The figure of the GPS surge protector is for reference only. The actual appearance may be different.

Step 6

Install the GPS jumper, as shown in

Figure 10-5

.



48

BTS3900L (Ver.C)

Installation Guide

Figure 10-5

Installing the GPS jumper


Step 7

Route the cable by referring to


and Cable Routes.

Step 8

Attach labels to the installed cables. For details, see Labeling Signal Cables.

----End

10.2 Installing the GATM and Bias-Tee

This describes the procedures and precautions for the installation of the GATM and Bias-Tee when they are used together with the DRFU.

Context

The Bias-Tee couples the DC power or OOK signals into the feeder. The GATM is connected to the antenna through the Bias-Tee. If the DRFU is configured, the GATM and Bias-Tee must be configured.

Figure 10-6

shows the cable connection ports of the straight DIN Bias-Tee.

Table 10-1

describes

the cable connection of the straight DIN Bias-Tee.

Figure 10-6

Cable connection ports of the straight DIN Bias-Tee



49

BTS3900L (Ver.C)


Table 10-1

Cable connections of the straight DIN Bias-Tee

No.

Cable Connection

1

2

Connected to the feeder of the antenna system.

Port for the Bias-Tee and RET control signals. Connected to the ports from

ANT0

to

ANT5

on the GATM.

3

4

Connected to the PGND cable.

Connected to the jumper of the base station.

Figure 10-7

shows the cable connections of the GATM and the straight DIN Bias-Tee.

Figure 10-7

Cable connections



50

BTS3900L (Ver.C)


Procedure

Step 1

Connect the

GND

port on the straight DIN Bias-Tee to the ground bar of the antenna through the PGND cable, and then fix the straight DIN Bias-Tee on the cable tray.

Step 2

Connect the

ANT

port on the straight DIN Bias-Tee to the 7/8" feeder.

Step 3

Connect the

DC/OOK

port on the Bias-Tee to the ports from

ANT0

to

ANT5

on the GATM through the RET control signal cable.

Step 4

Connect the

BTS

port on the Bias-Tee to the RF output port on the RFU through the 1/2" jumper, as shown in

Figure 10-8

.

Figure 10-8

Installing the straight DIN Bias-Tee

(1) Indoor ground bar

(4) 1/2" jumper

(2) Ground bar for the antenna

(5) RET control signal cable

(3) 7/8" feeder

(6) GATM

Step 5

Attach color rings to the RF jumper by referring to Attaching the Color Ring.

----End



51

BTS3900L (Ver.C)


10.3 Installing the DCDU-11B

When an indoor base station is configured with both RFUs and RRUs, a DCDU-11B (DCDU for short) can be installed on a wall and its power cables can be connected to supply power to

RRUs.

Context

A DCDU-11B supports -48 V DC power input. The following table lists the specifications of

DCDU-11B power cables.

Table 10-2

Specifications of DCDU-11B power cables

Cable

DCDU-11B power cable

RTN(+) wire

NEG(-) wire

One End

OT terminal (M6, 16 mm

2

or 0.025 in.

2

)

The Other End Remar ks

Depending on the external equipment

Black

Blue

NOTE

The colors and structures of cables vary according to countries and regions. If cables are purchased locally, the cables must comply with local rules and regulations.

Procedure

Step 1

Use four M6x12 screws to secure the mounting ears on the wall and those on the DCDU, and tighten the screws to 3 N·m (26.55 lbf·in.), as shown in the following figure.

Figure 10-9

Securing the mounting ears on the wall and those on the DCDU



52

BTS3900L (Ver.C)


Step 2

Place the DCDU against the wall, and use a marker to mark the holes for installing screws securing mounting ears, as shown in the following figure.

Figure 10-10

Marking the positions for installing screws securing mounting ears of the DCDU

Step 3

Drill holes at the anchor points and install expansion bolt assemblies in the holes, as shown in the following figure.

Figure 10-11

Drilling a hole and inserting an expansion bolt assembly

(1) M6x60 bolts (2) Nut (3) Spring washer (4) Flat washer (5) Expansion tube

Issue 07 (2013-11-08)

1.

Use a hammer drill with a Φ8 bit to drill holes vertically at the marked anchor points. Ensure that the depth of each hole ranges from 50 mm (1.97 in.) to 60 mm (2.36 in.).



53

BTS3900L (Ver.C)


CAUTION


2.

Use a vacuum cleaner to clear the dust out from inside and around the holes, and measure the distances between holes. If any of the hole is beyond the acceptable range, mark a new anchor point and drill a new hole.

3.

Tighten an expansion bolt slightly and place it vertically into each hole.

4.

Use a rubber mallet to pound the expansion bolt assembly until it goes into the hole completely. The expansion bolt must protrude 20 mm (0.79 in.) from the wall.

5.

Remove the M6x60 bolt, nut, spring washer, and flat washer in sequence.

NOTICE

After dismantling an expansion bolt assembly, ensure that the top of the expansion tube is level with the wall. Otherwise, the DCDU cannot be installed on the wall evenly and securely.

Step 4

Tightly press the DCDU against the wall with the front panel facing the right and the power port facing downwards. Then use a torque wrench to tighten the four M6x60 screws on the wallmounting ears for the DCDU to 5 N·m (44.25 lbf·in.), as shown in the following figure.

Figure 10-12

Installing the DCDU



54

BTS3900L (Ver.C)


Step 5

Prepare a PGND cable for the DCDU.

1.

Cut the cables to the length suitable for the actual cable route.

2.

Add OT terminals to both ends of the cables according to the instructions in Assembling the OT Terminal and the Power Cable.

Step 6

Connect one end of the PGND cable for the DCDU to the ground terminal on the DCDU and the other end to the external ground bar, as shown in the following figure.

Figure 10-13

Installing a PGND cable for the DCDU

Step 7

Prepare DCDU power cables.

1.

Cut the cables to the length suitable for the actual cable route.

2.

Add OT terminals to both ends of the cables according to the instructions in Assembling the OT Terminal and the Power Cable.

Step 8

Install the DCDU power cables, as shown in the following figure.

1.

Remove the protective cover for the external terminal block from the DCDU.

2.

Connect the OT terminals at one end of the DCDU power cables to the NEG(-) and RTN

(+) terminals on the DCDU and secure the OT terminals to 4.8 N·m (42.48 lbf·in.).

3.

Connect the OT terminals at the other end of the DCDU power cables to the external power equipment.

4.

Reinstall the protective cover and secure it to 0.3 N·m (2.655 lbf·in.).



55

BTS3900L (Ver.C)

Installation Guide

Figure 10-14

Installing the DCDU power cables


Step 9

Lay out the cables according to the instructions in Cabling Requirements, and use cable ties to bind them.

Step 10

Label the installed cables according to the instructions in Attaching a Cable-Tying Label.

----End

10.4 Installing the BBU Case

This section describes the procedure for installing a BBU case.

Procedure

Step 1

Align mounting holes on the cable holders with mounting holes on both sides of the BBU case, and then use two M4 screws on each side to secure the cable holes to 1.2 N·m, as shown in

Figure 10-15

.



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BTS3900L (Ver.C)

Installation Guide

Figure 10-15

Installing cable holders on the BBU


Step 2

Slide the BBU along the guide rails into the cabinet, and then tighten four M6x16 screws on the panel to 3 N·m (26.55 lbf·in.), as shown in

Figure 10-16

.

Figure 10-16

Installing the BBU case

----End

10.5 Installing the BBU Components

This section describes how to install the boards into the BBU and SLPU.

Context

Issue 07 (2013-11-08)

NOTE

This chapter only describes the procedure for installing components in the BBU. For details about the slots where the BBU components are installed, see the BBU configuration information.



57

BTS3900L (Ver.C)


CAUTION

Take correct ESD prevention measures, such as wearing an ESD wrist strap or ESD gloves, to avoid static damage to boards, modules, and electronic components.

Operation Rules

l

When moving a board, hold the board with both hands, as shown in

Figure 10-17

.

Figure 10-17

Incorrect and correct operations for moving a board l When installing a board, hold the front panel with one hand and support the edge of the board with the other hand to insert it into the slot. Do not use only one hand to hold the

board or apply pressure to the edge of the board.

Figure 10-18

shows correct and incorrect

operations.

Figure 10-18

Incorrect and correct operations for supporting a board for installation

Issue 07 (2013-11-08) l When inserting a board into a slot, keep the board on the same plane as the slot. Do not

bend the board or insert it at an angle.

Figure 10-19

shows correct and incorrect operations.



58

BTS3900L (Ver.C)


Figure 10-19

Incorrect and correct operations for inserting a board

CAUTION

l Exercise cautions when holding and placing boards to avoid collision or scratches. Do not stack or deform boards after they are unpacked.

l When inserting a board, ensure that it does not collide with the subrack and is properly installed.

Installing the boards into the BBU

Figure 10-20

uses the WMPT and UPEU as examples to illustrate how to install boards in the

BBU.

1.

Loosen the screws on the filler panels in the installation slots, and then remove the filler panels from the slots.

2.

If there are ejector levers on the panel, raise them.

3.

Gently slide the board into the slot.

4.

If there are ejector levers on the panel, close them.

5.

Tighten the captive screws on both sides of the panel to 0.6 N·m (5.31 lbf·in.).



59

BTS3900L (Ver.C)

Installation Guide

Figure 10-20

Installing the boards into the BBU




60

BTS3900L (Ver.C)

Installation Guide 11 Installing the Cables

11

Installing the Cables


Issue 07 (2013-11-08)

The cables in the BTS3900L cabinet are already installed. You need to install only the cables led into the cabinet and cables for optional components.

11.1 Cabling Requirements

Cables must be routed according to the specified cabling requirements to prevent signal interference.

11.2 Cable Routes

The cables in the BTS3900L cabinet must be routed according to the cabling requirements and must be bound by using cable ties.

11.3 Installing the Power Cables

This chapter describes the procedures for installing the power cables and precautions to be taken during the procedures in the standard power scenario and small configuration scenario.

11.4 Installing a BBU Power Cable

This section describes the procedure for installing a BBU power cable in a cabinet.

11.5 (Optional) Installing RRU Power Cables

When an indoor base station is configured with both RFUs and RRUs, RRU power cables need to be installed to feed power into RRUs.

11.6 Installing the Transmission Cables

The E1/T1 cable or FE/GE cable can be used for data transmission according to the transmission mode of the base station. Only one transmission mode can be supported by the base station working in the GSM standard, and two transmission modes can be supported by the base station working in the UMTS standard.

11.7 Installing the Monitoring Signal Cables

This section describes the procedure for installing monitoring signal cables and provides important notes about the installation.

11.8 Installing an RF Jumper

An RF jumper connects an RFU to the antenna system for signal exchange between a base station and the antenna system.



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BTS3900L (Ver.C)


11.9 Installing the CPRI Cable

The CPRI electrical cable between RF module and the BBU is used to transmit the CPRI signals between the RF module and the BBU.

11.10 (Optional)Installing a CPRI Optical Fiber

A CPRI fiber optic cable transmits CPRI signals between a BBU and an RRU.



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BTS3900L (Ver.C)



Cables must be routed according to the specified cabling requirements to prevent signal interference.

NOTE

If a cable listed below is not required, skip the routing requirements of the cable.

General Cabling Requirements

Requirements for Bending Radius

l The bending radius of the 7/8'' feeder must be more than 250 mm (9.84 in.), and the bending radius of the 5/4'' feeder must be more than 380 mm (14.96 in.).

l The bending radius of the 1/4'' jumper must be more than 35 mm (1.38 in.). The bending radius of the super-flexible 1/2'' jumper must be more than 50 mm (1.97 in.), and the bending radius of the ordinary 1/2'' jumper must be more than 127 mm (5 in.).

l The bending radius of the power cable or PGND cable must be at least three times the diameter of the cable.

l The bending radius of a fiber optic cable is at least 20 times the diameter of the fiber optic cable, and the minimum bending radius of the breakout cable at each end of the fiber optic cable is 30 mm (1.18 in.).

l The bending radius of the E1/T1 cable must be at least three times the diameter of the cable.

l The bending radius of the signal cable must be at least five times the diameter of the cable.

Requirements for Cable Binding

l The same types of cable must be bound together.

l Different types of cable must be separately routed with the minimum spacing of 30 mm

(1.18 in.) and cannot be entangled.

l

The cables must be bound tightly and neatly. The sheaths of the cables must not be damaged.

l Cable ties are installed in the same direction, and those at the same horizontal line must be in a straight line.

l The excess of indoor cable ties is trimmed off, and the excess of outdoor cable ties allows about 5 mm (0.2 in.), without remaining rough edges.

l Labels or nameplates must be attached to both ends, joints, or turns of cables after they are installed.

Security Requirements

l Cables should be placed away from sharp objects or wall burrs. If these positions are inevitable, protect the cables with protection pipes.

l Cables must be routed away from heat sources, or heat-insulation materials are added between cables and heat sources.

l Sufficient slack (recommended for about 0.1 m [0.33 ft]) is provided in cables at turns or the position close to a device, facilitating cable and device maintenance.

Indoor Cabling Requirements

l Cables are routed indoors through the feeder window.



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BTS3900L (Ver.C)

Installation Guide 11 Installing the Cables l Drip loops must be made outside the feeder window, and the requirements for the minimum bending radius are met.

l When cables are routed indoors, engineers are required indoors for cooperation.

l

The feeder window must be waterproofed.

Outdoor Cabling Requirements

l Cables routed outdoors must be led through a pipe when they may be damaged.

l AC power cables, transmission cables, and cables buried in the ground must be protected.

l If cables at the cabinet bottom need to be routed through a pipe along the ground, lead the pipe into the cabinet base for about 30 mm (1.18 in.) to 50 mm (1.97 in.), not into the cabinet. Block the pipe with waterproof tape or silicon gel, and secure the pipe to the cable hole at the cabinet bottom with metal piece.

l If cables at the cabinet bottom need to be routed through a pipe along the metal cable trough, do not lead the pipe into the cabinet base. The cable trough must be sealed and routed through the cable hole at the cabinet bottom.

l When routing RRU cables, ensure that the highest positions of the routes of all RRU cables

(except RF cables and AISG cables) must be lower than the bottom of the RRU.

l Cables are secured with cable clips.

l Cables are routed neatly along the specified cabling direction and secured with cable clips.

l The positions for cable clips are determined onsite. For example, the cable clips for the

7/8" feeder are installed at the spacing of 1.5 m (4.92 ft) to 2 m (6.56 ft) in the same direction, and the cable clips for the power cables are installed at the spacing of 1.5 m (4.92 ft) to 2 m (6.56 ft) in the same direction.

l Cable clips must be vertical with cables, and the cables in a cable clip must be parallel.

l After routing cables neatly and correctly, tighten the screws on cable clips.

Secure cables on the cable tray, as shown in

Figure 11-1

.



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BTS3900L (Ver.C)

Installation Guide

Figure 11-1

Securing cables on the cable tray

11 Installing the Cables

Secure cables on the tower, as shown in

Figure 11-2

.



65

BTS3900L (Ver.C)

Installation Guide

Figure 11-2

Securing cables on the tower


Special Cabling Requirements

Cabling Requirements for Power Cables

l

Power cables must be installed in the position specified in engineering design documents.

l If the length of power cables is insufficient, replace the cables rather than adding connectors or soldering joints to lengthen the cables.

l Cables must be routed by only qualified and trained personnel before all preparations are made.

l Cables are routed in an untangled and orderly fashion.

l If DC power cables need to be routed on the tower platform, lay out the cables on the guardrail with the shortest distance and route the cables along the guardrail.



66

BTS3900L (Ver.C)

Installation Guide 11 Installing the Cables l If DC power cables need to be routed close to a device on the tower, secure the cables to the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables.

Cabling Requirements for PGND Cables

l PGND cables for the base station must be connected to the same ground bar.

l PGND cables must be buried in the ground or routed indoors. They should not be routed overhead before they are led into the equipment room.

l The exterior of the coaxial wire and the shield layer of the shielded cable must have proper electrical contact with the metal surface of the equipment to which they are connected.

l

PGND cables and signal cables must be installed in an untangled and orderly fashion. A certain distance must be reserved between them to prevent interference from each other.

l Fuses or switches must not be installed on the PGND cables.

l Other devices must not be used for electrical connections of the PGND cables.

l All the metal parts in the housing of the equipment must be reliably connected to the ground terminal.

Cabling Requirements for E1 Cables

l E1 cables must not cross power cables, PGND cables, or RF cables when routed. If transmission cables are routed with power cables, PGND cables, or RF cables in parallel, the spacing between them must be greater than 30 mm (1.18 in.).

l E1 cables are routed straightly and bound neatly with cable ties.

l Sufficient slack is provided in E1 cables at turns.

l E1 cables cannot be squeezed by the cabinet door when routed through the cabinet, as shown in

Figure 11-3

.

Figure 11-3

E1 cables routed through the cabinet

Issue 07 (2013-11-08)

Cabling Requirements for Fiber Optic Cables

l

Fiber optic cables must be routed by at least three qualified and trained personnel before all preparations are made.

l Fiber optic cables are used within the temperature range of -40°C to 60°C. If the current temperature is out of the range, make protection measures or route the cables again.

l Cables are routed in an untangled and orderly fashion.



67

BTS3900L (Ver.C)

Installation Guide 11 Installing the Cables l Do not bind fiber optic cables at turns.

l Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the cables away from sharp objects.

l

When fiber optic cables are routed, the excess of the cables must be coiled around special devices, such as a fiber coiler.

l An unarmored fiber optic cable must be bound using binding straps. If a fiber optic patch cord needs to be secured in a cabinet or a piece of equipment, use binding straps to bind it and then use cable ties to secure the binding straps to the cabinet or equipment. Ensure that the fiber optic cables can flexibly move in the cable ties. Do not bend the fiber optic cables sharply. The following figure shows how to bind the fiber optic cables correctly.

Figure 11-4

Binding fiber optic cables l

When coiling fiber optic cables, apply even strength. Do not bend the cables with force.

l Vacant optical connectors must be covered with dustproof caps.

l Fiber optic cables cannot be squeezed by the cabinet door when routed through the cabinet, as shown in

Figure 11-5

,

Figure 11-6

and

Figure 11-7

.

Figure 11-5

CPRI fiber optic cables routed through the cabinet (1)



68

BTS3900L (Ver.C)

Installation Guide

Figure 11-6

CPRI fiber optic cables routed through the cabinet (2)


Figure 11-7

FE/GE cables routed through the cabinet l If fiber optic cables need to be routed on the tower platform, lay out the cables on the guardrail with the shortest distance and route the cables along the guardrail.

l

If fiber optic cables need to be routed close to a device on the tower, secure the cables to the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables.

l If the fiber optic cables close to a device are too long, coil the excess of the cables and secure them on the tower.


The cables in the BTS3900L cabinet must be routed according to the cabling requirements and must be bound by using cable ties.

l Route the PGND cables along the left side inside the cabinet.

l Route six jumpers along the left side inside the lower compartment near the door.

l Route the input power cable along the left side inside the cabinet.

l Route six jumpers along the right side inside the lower cabinet near the door.

l

Route the transmission cables along the cabling space on the right side outside the cabinet.

l Route the jumpers in the upper cabinet out of the cabinet from the top.



69

BTS3900L (Ver.C)

Installation Guide

Figure 11-8

shows the cable routes in the cabinet.

Figure 11-8

Cable routes


(a) PGND cable and the lower

DCDU input power cable

(d) CPRI fiber optic cable

(g) Jumpers on the right side

(b) Jumpers on the left side

(e) Not defined

(h) Not defined

(c) The upper DCDU input power cable in the capacity expansion scenario

(f) Transmission cables and signal cables

(i) Jumpers in the lower compartment

Binding Cables

Bind the cables according to the routes in

Figure 11-8

and methods in

Figure 11-9

and

Figure

11-10

.

NOTE

Locate the cables around the binding bracket according to the figures showing the spatial positions of the cables. Bind the cables to the nearest points on the binding bracket.



70

BTS3900L (Ver.C)

Installation Guide

Figure 11-9

Binding cables on the left side


(1) PGND cable

(4) DCDU input power cable

(2) Jumpers on the left side

(5) CPRI fiber optic cable -

(3) DCDU input power cables in the capacity expansion scenarios



71

BTS3900L (Ver.C)

Installation Guide

Figure 11-10

Binding cables on the right side


(1) Transmission cables and signal cables

(2) CPRI fiber optic cable

(3) Jumpers on the right side (4) Not defined

11.3 Installing the Power Cables

This chapter describes the procedures for installing the power cables and precautions to be taken during the procedures in the standard power scenario and small configuration scenario.

11.3.1 Standard Powering Scenario

In the case of full configuration with 12 RFUs, connect the input power cables and supply the power to the cabinet.

Context

By default, 2 X 160A or 4 X 80A should be provided for BTS3900L(Ver.C) cabinet, as shown in

Figure 11-11

.



72

BTS3900L (Ver.C)

Installation Guide

Figure 11-11

Standard Powering Scenario


Procedure

Step 1

Measure the distance between the DCDU-11A and the external power supply equipment according to the actual cable route, and then prepare power cables of a proper length.

Step 2

Add an M6 OT terminal to one end of the power cables. For details, see Assembling the OT

Terminal and the Power Cable.

Step 3

Remove the protective cover from the terminal block of the DCDU-11A.

Step 4

Connect the blue cable to the wiring terminal labeled

NEG(-)

and black cable to the wiring terminal labeled

RTN(+)

.

Step 5

Use a screwdriver to tighten the screws on the wiring terminals.

Step 6

Install the protective cover, and then use a screwdriver to tighten the screws.

Figure 11-12

shows the installation process.



73

BTS3900L (Ver.C)

Installation Guide

Figure 11-12

Installing the input power cable


Step 7

Route the cables by referring to


and


.

Step 8


----End

11.3.2 Small Configuration Scenario I: 2x80A in Upper and Lower

Shelves

In this scenario, two 80A input power cables are used for upper and lower shelves.

Context

Its typical scenarios include: l 3 large-power modules + 3 large-power modules + 1 or 2 BBUs, and RFUs in upper and lower shelves.



74

BTS3900L (Ver.C)

Installation Guide 11 Installing the Cables l 3 large-power modules + 3 small-power modules + 1 or 2 BBUs, and RFUs in upper and lower shelves.

l 3 large-power modules + 1 or 2 BBUs, and RFUs in uppoer or lower shelf.

NOTE

Two 80A air switches, one of them for upper or lower DCDU.

Figure 11-13

shows the small configuration scenarios.

Figure 11-13

Small Configuration Scenario I

Procedure

Step 1


Step 2

Add an M6 OT terminal to one end of the power cables. For details, see Assembling the OT

Terminal and the Power Cable.

Step 3


Step 4


NEG(-)


RTN(+)

.

Step 5


Step 6


Figure 11-14




75

BTS3900L (Ver.C)

Installation Guide

Figure 11-14

Installing the Input Power Cables


Step 7



and


.

Step 8


----End

11.3.3 Small Configuration Scenario II: 2x80A in Lower Shelf in

Parallel

In this scenario, two 80A input power cables are connected to DCDU in the lower shelf and an

BBU is powered by the DCDU in the lower shelf via 1.3m power cable.

Context

The typical scenario includes: l 6 large-power modules + 1 BBU, and RFUs in lower shelf.



76

BTS3900L (Ver.C)

Installation Guide l 3 large-power modules + 3 small-power modules + 1 BBU, and an RFU in lower shelf.

NOTE

The BBU connection should be restored if there is a future extension. That is, the BBU should be powered from DCDU in the upper shelf (1.3m power cable).

Figure 11-15

shows the small configuration scenario.

Figure 11-15

Small configuration scenario II


NOTE

In this scenario, the fan assembly in the upper subrack does not need to be powered on, and therefore it does not need to be connected to any power cable.

Procedure

Step 1

Connect two 80A input cables to DCDU in the lower shelf.

1.


2.

Add an M6 OT terminal to one end of the power cables. For details, see Assembling the

OT Terminal and the Power Cable.

3.


4.


NEG(-)


RTN(+)

.

5.


6.




77

BTS3900L (Ver.C)

Installation Guide

Figure 11-16


Figure 11-16

Installing two input power cables in the lower shelf


Step 2

Connect the cable that supplies the power to BBU from DCDU in the lower shelf.

1.

Choose a cable with length 1.3m and diameter 35mm

2

(one end is tool-less female power connector (pressfit type) and the other end is 3V3 power connector).

2.

Check whether the circuit breakers labelled

SW7

and

SW8

on DCDU-11A are set to

OFF

.

3.

Connect one end to

PWR

port on UPEU in BBU in the upper shelf and connect the other end to

LOAD7

or

LOAD8

port on DCDU-11A in the lower shelf, as shown in

Figure

11-17

.



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BTS3900L (Ver.C)

Installation Guide

Figure 11-17

Installing the power cable for BBU in the upper shelf


Step 3



and


.

Step 4


----End

11.3.4 Small Configuration Scenario III: 2x80A in Upper Shelf in

Parallel

In this scenario, two 80A input power cables are connected to DCDU in the upper shelf and the fan box in the lower shelf is powered from the DCDU in the upper shelf.

Context

Its typical scenarios include: l 6 large-power modules + 1 BBU in the upper shelf.

l 3 large-power modules + 3 small-power modules + 1 BBU in the upper shelf.



79

BTS3900L (Ver.C)


NOTE

If extension in future, the fan box in the lower shelf should be restored to get the power from DCDU in the lower shelf.

Figure 11-18

shows the small configuration scenario.

Figure 11-18

Small configuration scenario III

Procedure

Step 1

Connect two 80A input cables to DCDU in the upper shelf.

1.


2.

Add an M6 OT terminal to each end of the power cables. For details, see Assembling the

OT Terminal and the Power Cable.

3.


4.


NEG(-)


RTN(+)

.

5.


6.


Figure 11-19




80

BTS3900L (Ver.C)

Installation Guide

Figure 11-19

Installing two input power cables in the upper shelf


Step 2

Connect the cable that supplies the power to the fan box from DCDU in the upper shelf.

1.

Choose the cable with length 1.3m and diameter 35mm

2

.

2.

For the cable, one end is easy power connector (EPC) and the other end is 3V3 power connector.

3.

Check whether the circuit breakers labelled

SW9

on DCDU-11A is set to

OFF

.

4.

Connect one end to

PWR

port on the fan box and connect the other end to

LOAD9

port

on DCDU-11A in the upper shelf, as shown in

Figure 11-20

.



81

BTS3900L (Ver.C)


Figure 11-20

Installing the power cable for the fan box in the lower shelf

Step 3



and


.

Step 4


----End

11.4 Installing a BBU Power Cable

This section describes the procedure for installing a BBU power cable in a cabinet.

Procedure

Step 1

Check whether the circuit breakers labeled SW7 and SW8 on the DCDU-11A are set to OFF.

Step 2

Connect one end of a BBU power cable to the -48 V port on each UPEU.

Step 3

Connect the other end of a BBU power cable to the LOAD7 and LOAD8 ports on the

DCDU-11A, as shown in

Figure 11-21

.



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BTS3900L (Ver.C)

Installation Guide

Figure 11-21

Installing a BBU power cable


----End

11.5 (Optional) Installing RRU Power Cables

When an indoor base station is configured with both RFUs and RRUs, RRU power cables need to be installed to feed power into RRUs.

Context

The following table lists the specifications of RRU power cables.

Table 11-1

Specifications of RRU power cables

Base Station Power Device One End

DCDU-03B OT terminal (M4) BTS3900 (Ver.B) and BTS3900L

(Ver.B)

BTS3900 (Ver.C) and BTS3900L

(Ver.C)

DCDU-11B Tool-less female connector (pressfit type)

The Other End

Depending on the port on the RRU

NOTE

l

The colors and structures of cables vary according to countries and regions. If cables are purchased locally, the cables must comply with local rules and regulations.

l The type of connector connecting to the power port on the RRU depends on the type of the RRU. For details about how to add a connector to an RRU power cable, see the related RRU installation guide.



83

BTS3900L (Ver.C)


Procedure

Step 1

Prepare RRU power cables.

1.

Cut the power cable to lengths suitable for the actual cable routes.

2.

Add connectors to the RRU power cables on the DCDU side.

l For details about how to add connectors to RRU power cables for a BTS3900 (Ver.B) or BTS3900L (Ver.B), see Assembling the OT Terminal and the Power Cable.

l For details about how to add connectors to RRU power cables for a BTS3900 (Ver.C) or BTS3900L (Ver.C), see Assembling the Tool-Less Female Connector (Pressfit Type) and the Power Cable(2).

Step 2

Add a correct connector to the RRU power cable on the RRU side and connect the connector to the power port on the RRU. For details, see the related RRU installation guide.

CAUTION

Ensure that the RRU power cable for an RRU added to a running base station must be connected to the RRU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury.

NOTE

When installing RRUs outdoors, use a ground clip to ground RRU power cables near the feeder window before routing them into the equipment room. However, this grounding measure is not required for RRUs installed indoors. As an example, the following figure shows the procedure for installing power cables for

RRUs installed outdoors.

Step 3

Optional:

Route the RRU power cable from the RRU side to the DCDU side through the feeder window. Install a ground clip near the feeder window outside the equipment room, and connect the PGND cable on the ground clip to the external ground bar. The installation procedure of ground clip is as follows:

1.

Use a utility knife to strip 63 mm (2.48 in.) long jacket off the power cable to expose the shield layer.

Figure 11-22

Stripping the jacket off the power cable

Issue 07 (2013-11-08)

2.

Wrap the copper sheet of the ground clip around the shield layer of the power cable, and use cable ties to bind them tightly. Then trim off surplus part from the heads of the cable ties without leaving any sharp edge.



84

BTS3900L (Ver.C)


Figure 11-23

Wrapping and tying the copper sheet of the ground clip

(1) Hole for a cable tie (12AWG/4 mm

2

or 0.006 in.

2

) (2) Hole for a cable tie ( ≥ 6 mm

2

or 0.009 in.

2

)

3.

Wrap three layers of waterproof tape and three layers of insulation tape around the ground clip.

Figure 11-24

Wrapping the waterproof tape and insulation tape

(1) Waterproof tape

(4) Power cable

(2) Insulation tape

(5) PGND cable -

(3) Cable tie

Issue 07 (2013-11-08)

NOTICE

Trim off surplus part of the cable ties at the position 3 mm (0.12 in.) to 5 mm (0.20 in.) away from the head of the cable tie.



85

BTS3900L (Ver.C)


Step 4

Connect connectors at the other end of the RRU power cables to the correct ports and use a

screwdriver to tighten them, as shown in

Figure 11-25

.

l For a BTS3900 (Ver.B) or BTS3900L (Ver.B), the OT terminals are connected to the LOAD0 to LOAD5 terminals on the DCDU-03B.

l For a BTS3900 (Ver.C) or BTS3900L (Ver.C), the tool-less female connectors (pressfit type) are connected to the LOAD0 to LOAD5 ports on the DCDU-11B.

Figure 11-25

Installing the RRU power cables

(1) Feeder window (2) Ground clip (3) External ground bar

Step 5

Lay out the cables according to the instructions in Cabling Requirements, and use cable ties to bind them.

Step 6

Label the installed cables according to the instructions in Attaching a Sign Plate Label.

----End

11.6 Installing the Transmission Cables

The E1/T1 cable or FE/GE cable can be used for data transmission according to the transmission mode of the base station. Only one transmission mode can be supported by the base station working in the GSM standard, and two transmission modes can be supported by the base station working in the UMTS standard.

11.6.1 Installing an E1/T1 Cable

An E1/T1 cable transmits E1/T1 signals between the BBU and transmission equipment.



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Installation Guide

Prerequisites


CAUTION

Before soldering the connectors to the E1/T1 cable, ensure that both ends of the E1 cable are disconnected from any devices. In addition, all the connectors are soldered to the E1 cable during the same session.

Context

For the connections of installing the E1/T1 cable, see the section about transmission cable connections in

Hardware Description

of each product.

Procedure

Step 1

Connect the E1/T1 cable to the port on the corresponding board, as shown in

Figure 11-26

.

Figure 11-26

Installing the E1/T1 Cable

Step 2

Secure the two captive screws to 0.25 N·m (2.21 lbf·in.).

Step 3

Route the E1/T1 cable along the cable trough on the right of the cabinet, and then use cable ties to bind the cable.

Step 4

Attach labels to the installed cables by referring to Attaching an L-Shaped Label.

----End

11.6.2 Installing an FE/GE Optical Cable

This section describes the procedure and precautions for installing FE/GE optical cable. FE/GE optical cables are required for communication between a transmission device and a base station through FE/GE optical fiber.



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Installation Guide

Prerequisites


NOTICE

l Wear ESD gloves or an ESD wrist strap before installing a module to protect the module from any damage.

l Install a binding strap before bending optical fiber to protect the fiber from being broken.

l The performance of an optical module that is exposed to the air for more than 20 minutes may be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module within 20 minutes.

Context

l Single-mode optical modules are labeled as SM and multimode optical modules are labeled as MM.

l The puller of a single-mode optical module is blue. The puller of a multimode optical module is black or gray.

l The optical modules to be installed must match the rates of their corresponding ports.

l An FE/GE fiber optic cable has an LC connector at one end and an FC, SC, or LC connector at the other end.

l The SFP0 and FE/GE0 ports on an LMPT are used for one GE input. Therefore, the two ports cannot be used simultaneously.

l The SFP1 and FE/GE1 ports on the LMPT are used for another GE input. Therefore, the two ports cannot be used simultaneously.

Procedure

Step 1

Install an optical module, as shown in

Figure 11-27

and

Figure 11-28

.

1.

Remove the dustproof cap from the FE/GE optical port on the corresponding BBU board.

2.

Remove the dustproof cap from the optical module.

3.

Lower the puller on the optical module.

4.

Insert the optical module into the FE/GE optical port.

5.

Raise the puller on the optical module.

Figure 11-27

Removing the dustproof cap from the port



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Figure 11-28

Installing the optical module


Step 2

Install the fiber optic cable, as shown in

Figure 11-29

.

1.

Remove the dustproof cap from the connector at the end labeled

2A

and

2B

on the fiber optic cable, and insert the connector into the optical module on the BBU.

2.

Route the fiber optic cable out of the cable outlet on the bottom right side of the cabinet.

3.

Connect the other end of the fiber optic cable to a routing device.

NOTICE

The TX and RX ports on the BBU boards must be connected to the RX and TX ports on the transmission equipment, respectively.

Figure 11-29

Routing the FE/GE optical cable

Step 3

Lay out the cables according to the instructions in Cabling Requirements. If a fiber optic patch cord is used as a BBU interconnection signal cable, use binding straps to bind the BBU interconnection signal cable before using cable ties to secure it. If another type of cable is used as a BBU interconnection signal cable, directly use cable ties to secure it.

Step 4

Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

11.6.3 Installing an FE/GE Cable

This section describes the procedure and precautions to be taken for installing an FE/GE cable.



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Context

11 Installing the Cables l

The shielded straight-through FE/GE cable is the only qualified type of FE/GE cable.

l The FE/GE cable transmits baseband signals between a BBU and transmission equipment.

For the connections of FE/GE Ethernet cables, see the section about transmission cable connections in the

Hardware Description

of each product.

Procedure

Step 1

Connect one end of an FE/GE cable to the FE0 port on the GTMU, WMPT, LMPT, UMPT, or

UTRP, as shown in

Figure 11-30

.

Figure 11-30

Installing the FE/GE cable

Step 2

Route the other end of the FE/GE cable out of the cabinet from a cable outlet.

Step 3

Route the cable along either side of the cabinet by referring to


, and then use cable ties to bind the cable.

Step 4

Label the installed cables by referring to Attaching an L-Shaped Label.

----End

11.7 Installing the Monitoring Signal Cables

This section describes the procedure for installing monitoring signal cables and provides important notes about the installation.

11.7.1 (Optional) Installing the Inter-BBU Signal Cable

This section describes the procedure for installing inter-BBU signal cables for a base station.

Prerequisites

l A new BBU has been added.

l Optical modules and fiber optic cables meeting the following requirements are available:

– The optical modules and fiber optic cables are of the multimode type.

–

The multimode optical modules to be installed on the UMPT and UCIU support the rates of 5 Gbit/s and 2.5 Gbit/s.



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– The interconnection signal cable between the WBBPf boards in two BBUs must be a

QSFP cable.

NOTE

l Single-mode optical modules are labeled as SM and multimode optical modules are labeled as

MM.


l

Figure 11-31

shows the label on an optical module.

Figure 11-31

Label on an optical module

(1) Maximum rate (2) Wavelength (3) Transmission mode

Context

Table 11-2

lists the interconnection modes of two BBUs and the ports to which the inter-BBU

signal cable is connected. For details about the BBU interconnection, see Inter-BBU Signal

Cable Connections.

Table 11-2

Ports to which the inter-BBU signal cable is connected

Interconnection

Mode

UCIU+UCIU

UCIU+UMPT

Installation Position

BBU0 Side

M0 port on the UCIU

M0 port on the UCIU

BBU1 Side

S0 port on the UCIU

CI port on the upper UMPT

M1 port on the UCIU

HEI port on the WBBPf

CI port on the lower UMPT

HEI port on the WBBPf

Issue 07 (2013-11-08)

NOTE

l BBU0 is the root BBU. BBU1 is the leaf BBU.

l A 2 m inter-BBU signal cable is recommended if the distance between BBU0 and BBU1 is shorter than 2 m.

l A 10 m inter-BBU signal cable is recommended when the distance between BBU0 and BBU1 ranges from

2 m to 10 m.




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Procedure

Step 1

Determine the positions for connecting the inter-BBU signal cables according to the actual interconnection scenarios.

Step 2

Install the optical modules in BBU 0, as shown in

Figure 11-32

and

Figure 11-33

.

1.

Remove the dustproof caps from the corresponding ports on BBU 0.

2.


3.

Insert the optical modules into the ports.

4.


Figure 11-32

Removing the dustproof cap from the port

Figure 11-33

Installing the optical module

Step 3

Install the inter-BBU signal cable, as shown in

Figure 11-34

and

Figure 11-35

.

1.

Remove the dustproof caps from the optical connectors at the end labeled 2A and 2B on the fiber optic cables, and insert the optical connectors into the optical modules in BBU 0.

2.

Route one end of the inter-BBU signal cable into BBU1 in the extension cabinet through the cable outlet on the right top of the basic cabinet and then the cable outlet on the top of the extension cabinet.

3.

On BBU 1, install optical modules of the same type as those on BBU 0.

NOTE

Optical modules with the same labels are of the same type.

4.

Remove the dustproof caps from the optical connectors at the end labeled 1A and 1B on the fiber optic cables, and insert the optical connectors into the optical modules in BBU 1.



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NOTICE

The TX ports on BBU 0 must be connected to the RX ports on BBU 1, and the RX ports on BBU 0 must be connected to the TX ports on BBU 1.

Figure 11-34

Removing the dustproof cap from the fiber optic cable



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Figure 11-35

Installing the inter-BBU signal cable




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Step 4

Lay out the cables according to the instructions in Cabling Requirements. If a fiber optic patch cord is used as a BBU interconnection signal cable, use binding straps to bind the BBU interconnection signal cable before using cable ties to secure it. If another type of cable is used as a BBU interconnection signal cable, directly use cable ties to secure it.

Step 5

Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

11.7.2 (Optional)Installing the Monitoring Signal Cable for the

EMU

The monitoring signal cable for the EMU transmits monitoring signals from the EMU to the

BBU3900.



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Procedure

Step 1

Insert the RJ45 connector at one end of the monitoring signal cable for the EMU into the port labeled MON1 on the UPEU in the BBU3900.

Step 2

Link the DB9 male connector at the other end of the monitoring signal cable for the EMU to the port labeled RS485 on the EMU, and then tighten the screws.

Step 3

Route the cable by referring to


and


.

Step 4

Attach labels to the installed cables by referring to Attaching an L-Shaped Label.

----End

11.7.3 Installing a BBU Alarm Cable

A BBU alarm cable transmits the alarm signals from external alarm devices to the BBU.

Procedure

Step 1

Install a BBU alarm cable, as shown in the following figure.

1.

Connect the RJ45 connector at one end of the BBU alarm cable to the EXT-ALM0/EXT-

ALM1 port on the UPEU in the BBU.

2.

Connect the RJ45 connector at the other end of the cable to the external alarm device.

Figure 11-36

Installing the BBU alarm cable

Step 2

Lay out the cable according to the instructions in Cabling Requirements and use cable ties to bind it.

Step 3

Label the installed cable according to the instructions in Attaching an L-Shaped Label.

----End



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BTS3900L (Ver.C)


11.8 Installing an RF Jumper

An RF jumper connects an RFU to the antenna system for signal exchange between a base station and the antenna system.

Procedure

Step 1

Lead an RF jumper into the cabinet through a cable hole, and then route the jumper by referring to


.

NOTE

Cut the RF jumper to the required length based on the actual cable route.

Step 2

Link the DIN connector of the jumper to the ANT port on the panel of the RFU, as shown in

Figure 11-37

.

Figure 11-37

Installing RF jumpers



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BTS3900L (Ver.C)


Step 3

Use a 32 mm torque wrench to tighten the DIN connector until the fastening torque reaches 25

N·m to 35 N·m.

Step 4

Attach colored insulation tape to the RF jumper by referring to Color Ring for the Antenna

System and Attaching the Color Ring.

NOTE

Inter-RFU RF signal cables are installed inside a cabinets based on the configurations of the cabinet before delivery. You only need to check connections of the cable onsite.

----End

11.9 Installing the CPRI Cable

The CPRI electrical cable between RF module and the BBU is used to transmit the CPRI signals between the RF module and the BBU.

Procedure

Step 1

Remove the dustproof bag from the connector at each end of the CPRI electrical cable.

Step 2

Insert the SFP connector at one end of the CPRI cable into the CPRI port on the panel of the

BBU.

NOTE

l For details about the connections for the CPRI cables, see the chapter

"CPRI Cable Connections"

in the

BTS3900L (Ver.C) Hardware Description

.

l For details about how to install or remove a CPRI cable, see Inserting and Removing CPRI Cables.

Step 3

Lead the other end of the CPRI cable through the left cable hole on the storage battery cabinet, through the radio frequency cabinet (RFC), into the extension RFC, and to the corresponding

RFU, as shown in

Figure 11-38

.



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Installation Guide

Figure 11-38

Installing the CPRI cable


Step 4

Insert the SFP connector at the other end of the CPRI cable into the CPRI0 port on the RFU, as shown in Figure 1.

Step 5



and use cable ties to bind the

cables.

NOTE

The cabling path of the CPRI cable can be changed and the cable can be routed at the opposite side if the length of the CPRI cable is insufficient from the CPRI interface on RFU (Slot0) to that (CPRI0) on GTMU

(Slot6) in BBU. In the process of cable routing, you should remain some margins against interference on plugging or unplugging board.

l Bind the cable during the cable routing. Tie the cable on the binding bracket by leading the cable tie through the cable and upper and lower cabling teeth. Ensure that the heads of all the cable ties are outside the cabling teeth, as shown in

Figure 11-39

.



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Installation Guide

Figure 11-39

Binding CPRI cables


(1) Cabling teeth (2) Binding bracket (3) Cable tie

Step 6

Attach labels to the installed cables. For details, see Attaching an L-Shaped Label.

----End

11.10 (Optional)Installing a CPRI Optical Fiber

A CPRI fiber optic cable transmits CPRI signals between a BBU and an RRU.

Context

l Single-mode optical modules are labeled as SM and multimode optical modules are labeled as MM.



l The figures in this section show the routing of the CPRI fiber optic cables in a UL scenario.

Connect the CPRI fiber optic cables according to the onsite configurations and instructions in section "CPRI Cable Connections" in the

BTS900L Hardware Description

.

NOTICE

The performance of an optical module that is exposed to the air for more than 20 minutes may be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module within 20 minutes.



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Procedure

Step 1

Install an optical module, as shown in

Figure 11-40

.

1.


2.

Insert the optical module into the CPRI port in the GTMU/WBBP/LBBP, and then insert an optical module of the same type into the CPRI_W, CPRI0 or CPRI0/IR0 port in the RF module.

NOTE

The optical modules with the same label are of the same type.

3.


Figure 11-40

Installing an optical module


Step 2

Install a CPRI optical fiber, as shown in

Figure 11-41

.

1.

Remove the dustproof caps from the connectors of the optical fiber.

2.

Insert the DLC connectors labeled 2A and 2B at one end of the CPRI fiber optic cable into the optical module on the GTMU, WBBP, or LBBP, and then insert the DLC connectors labeled 1A and 1B at the other end into the optical module on the RF module.

NOTICE

l The optical fibers on the BBU side is 0.34 m (0.013 in.). When a fiber optical cable connects a BBU and an RF module, the optical fibers on the BBU side and RF module side are 0.34 m (0.013 in.) and 0.03 m (0.0012 in.) long, respectively.

l If an LC-LC optical fiber is used, the TX port on the BBU must be connected to the TX port on the RF module, and the RX port on the BBU must be connected to the RX port on the RF module.



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Figure 11-41

Installing a CPRI optical fiber


Step 3

Route the CPRI optical fiber out of the cabinet from the cable outlet on the left or right top. For

details about how to route the cable according to the instructions in

11.1 Cabling

Requirements

, as shown in

Figure 11-42

NOTE

CPRI fiber optic cables are routed out of the cabinet through the nearer (left or right) cable outlet. One cable outlet allows a maximum of 12 CPRI fiber optic cables. Therefore, the remaining cables besides the 12 ones must be routed through the other cable outlet.



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Figure 11-42

Installing the CPRI optical fiber


Step 4

Attach labels on the fiber optic cable. For details, see Attaching a Sign Plate Label.

----End



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BTS3900L (Ver.C)

Installation Guide 12 Installation Checklist

12

Installation Checklist

Check the installation items, installation environment, and cable-related items after the cabinets and devices are all installed.

Cabinet Installation Checklist

Table 12-1

describes the cabinet installation checklist.

3

4

5

Table 12-1

Cabinet installation checklist

No.

1

Item

The base is securely installed.

2 All the bolts, especially those for electrical connections, are tightened. Both the spring washer and the flat washer are installed in a correct sequence.

The surface of the cabinet is neat and clean.

6

The cabinet meets the dust-free requirement.

The paint on the surface is satisfactory. The surface where the paint had flaked off has been repainted.

All labels, tags, and nameplates are correct, legible, and complete.

Installation Environment Checklist

Table 12-2

describes the installation environment checklist.

Table 12-2

Installation environment checklist

No.

1

Item

No redundant tapes or cable ties are left on the cables.



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No.

2

Item

No tapes, tails of cable ties, paper, or packing bags are left inside or outside the cabinet.

All the items around the cabinet are neat, clean, and intact.

3

Electric Connection Checklist

Table 12-3

describes the electric connection checklist of the cabinet.

Table 12-3

Electric connection checklist of the cabinet

No.

Item

1 All self-made PGND cables are copper-based with the proper wire diameters. No breaking device such as switch and fuse is allowed for the electric connection of the grounding system. No short circuit is allowed. Each terminal on the ground bar can be connected with only one wiring terminal of the PGND cable.

2 The redundant part of the power cable or PGND cable is stripped off rather than coiled.

3

4

5

The lugs at both ends of the power cable or PGND cable are securely soldered or crimped.

The bare wires and the OT terminals are coated with heat-shrinkable tubes.

The flat washer and the spring washer are well mounted on all OT terminals.

Cable Installation Checklist

Table 12-4

describes the cable installation checklist.

Table 12-4

Cable Installation Checklist

No.

1

Item

All cables are connected accurately. All cables are connected securely and reliably. Pay special attention to the communication cable connections and cable connections at the bottom of the cabinet.

2

3

The cables are neatly and tightly bound. The cable ties are evenly spaced and face the same direction.

Different types of cable, such as the power cable, ground cable, feeder, optical cable, E1/T1 cable, and FE cable are separately bound.



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No.

4

5

6

7

8

Item

The layout of all cables must facilitate the maintenance and capacity expansion.

For example, the maintenance transfer cable must be bound to the BBU cable claw and oriented outwards, as shown in

Figure 12-1

.

All the labels at both ends of the cables are legible.

The extra length of the indoor cable ties is cut, and the cut surfaces are smooth without sharp edges. The extra length of 3 mm to 5mm of the outdoor cable ties is reserved when the cable ties are cut.

The idle port that no cable is connected to is properly protected.

The connectors of the RF cables are fixed in position to avoid false connection that may cause an abnormal voltage standing wave ratio (VSWR).

Figure 12-1

Check the maintenance transfer cable



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BTS3900L (Ver.C)

Installation Guide 13 Powering On the BTS3900L

13

Powering On the BTS3900L

Prerequisites

l The input power cables are correctly and securely connected.

l The power input of the BTS3900L meets the specifications listed in Power Supply

Requirements of the BTS3900L.

l The power switches on the DCDU-11A or DCDU-11B (DCDU for short) in the BTS3900L are set to OFF.

l The external power supply to the BTS3900L is shut off.

Context

This section describes how to power on the BTS3900L cabinet and handle the power supply failure to the components in the cabinet.

NOTICE

After unpacking a cabinet, power on it within 7 days. If you power off the cabinet for maintenance, restore power to the cabinet within 48 hours.

Figure 13-1

shows the positions of the circuit breakers on the DCDU.

Figure 13-1

DCDU panel



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Table 13-1

describes the power switches on the DCDU-11A.

Table 13-1

Power switches on the DCDU-11A

Power switches on the DCDU-11A

LOAD0

Module

RFU in slot 0

LOAD1

LOAD2

LOAD3

RFU in slot 1

RFU in slot 2

RFU in slot 3

LOAD4

LOAD5

LOAD6

LOAD7

LOAD8

LOAD9

RFU in slot 4

RFU in slot 5

FAN module

BBU

BBU

Reserved

NOTE

The numbers of the slots where the RFUs are installed are 0 to 5 from left to right.

Table 13-2

lists the circuit breakers on the DCDU-11B panel.

Table 13-2

Circuit breakers on the DCDU-11B panel

Circuit Breaker on the DCDU-11B Panel Module

LOAD0 to LOAD5

LOAD6 to LOAD9

RRUs

Reserved

Procedure

Step 1

Turn on the switch of the external power supply to power on the BTS3900L.

Step 2

Check whether the input voltage of the DCDU in the BTS3900L is normal.

If Then

The input voltage of the DCDU is not in the range from -38.4 V DC to -57 V DC

Power supply to the cabinet fails. Go to

Step

3

.



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If

The input voltage of the DCDU is in the range from -38.4 V DC to -57 V DC

Then

The power-on check for the cabinet is

complete. Go to

Step 6

.

Step 3

Turn off the switch of the external power supply to power off the BTS3900L.

Step 4

Check the connections and routing of the power cables for the DCDU.

Step 5

Go to

Step 2

to ensure that the output voltage of the DCDU is normal.

Step 6

Turn on the power switches on the DCDU, and then check the power supply to the internal

components of the cabinet by referring to

Table 13-3

.

Table 13-3

Indication of normal power supply to the components

Component LED Status

BBU UPEU

FAN

The RUN LED (green) is steady on.

The STATE LED (green) blinks (on for 1s and off for 1s).

Other boards

Fan box

The RUN LED (green) blinks (on for 1s and off for 1s).

The fan works properly. The RUN LED (green) blinks (on for 1s and off for 1s).

RFU The RUN LEDs (green) on the panels of the RFUs blink

(on for 1s and off for 1s).

Step 7 Optional:

If the power supply to a component fails after the cabinet is powered on, handle the fault according to the instructions in the following table.

Table 13-4

Troubleshooting

Failure Type

Failure in the power supply to all components in the cabinet

Handling Measure

Check whether the power cables are reversely connected.

l If the cables are incorrectly connected, set all the circuit breakers to OFF, and then reconnect the power cables.

l If the cables are correctly connected, replace the power units.



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Failure Type

Failure in the power supply to a board in the

BBU

Failure in the power supply to other components in the cabinet

Handling Measure

Check as follows:

1. Remove the board, and check whether any pin of the slot on the backplane is bent, broken, or missing. Replace the subrack if necessary.

2. Insert the board into the subrack, and check the status of indicators on the board.

3. If the indicators indicate an exception, remove the board, insert it into a vacant slot holding the boards of the same type, and check the status of the indicators.

l If the board works properly, the original slot is faulty. In this case, replace the subrack.

l If the fault persists, the board is faulty. In this case, replace the board.

Check as follows:

1. Check whether the indicator on the fuse terminal block that connects power supply to the component is on. Skip this step and go to

step b

if this component does not use any fuse terminal block.

l If the indicator on the fuse terminal block is on, the fuse is faulty. In this case, replace the fuse according to the instructions in Replacing a Fuse.

l If the indicator on the fuse terminal block is off, go to

step b

.

2. Use a multimeter to measure the input power to the component.

l If the input power is normal, replace the component.

l If the input power is abnormal, check whether the power cable for the component is connected securely. If the power cable is not securely connected, turn off the circuit breaker for the component (if there is no circuit breaker for the component, remove the connector from the power unit) and reconnect the power cable. If the power cable is securely connected, the circuit breaker or fuse for the component may be faulty. In this case, replace the circuit breaker or fuse.

----End



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