Huawei Technologies RRU3804B2 Distributed NodeB Remote Radio Unit User Manual User Guide

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RRU3804B2 User Manual HTML Version

User Manual

RRU

V200R001

User Guide

Issue 01

Date 2008-04-18

Part Number 00394301

Huawei Proprietary and Confidential

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any

assistance, please contact our local office or company headquarters.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

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People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

No part of this document may be reproduced or transmitted in any form or by any means without prior written

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and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

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 the statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Proprietary and Confidential

Contents

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

1 Safety Information.....................................................................................................................1-1

1.1 Safety Precautions...........................................................................................................................................1-1

1.2 Electricity Safety.............................................................................................................................................1-3

1.3 Inflammable Environment...............................................................................................................................1-5

1.4 Battery.............................................................................................................................................................1-5

1.5 Radiation.........................................................................................................................................................1-7

1.6 Working at Heights.........................................................................................................................................1-9

1.7 Mechanical Safety.........................................................................................................................................1-11

1.8 Others............................................................................................................................................................1-12

2 RRU and SRXU Hardware........................................................................................................2-1

2.1 RRU Equipment..............................................................................................................................................2-2

2.1.1 Appearance of the RRU.........................................................................................................................2-2

2.1.2 LEDs on the RRU..................................................................................................................................2-3

2.1.3 Panels of the RRU..................................................................................................................................2-4

2.2 SRXU Equipment............................................................................................................................................2-6

2.2.1 Appearance of the SRXU.......................................................................................................................2-7

2.2.2 LEDs on the SRXU................................................................................................................................2-7

2.2.3 Panels of the SRXU................................................................................................................................2-8

2.3 RRU Cables...................................................................................................................................................2-10

2.3.1 PGND cable of the RRU......................................................................................................................2-11

2.3.2 Power Cable of the RRU......................................................................................................................2-11

2.3.3 CPRI Optical Cable..............................................................................................................................2-12

2.3.4 AISG Multi-Wire Cable of the RRU/SRXU........................................................................................2-13

2.3.5 AISG Extension Cable of the RRU/SRXU..........................................................................................2-14

2.3.6 RF Jumper of the RRU/SRXU.............................................................................................................2-15

2.3.7 Alarm Cable of the RRU......................................................................................................................2-18

2.4 SRXU Cables................................................................................................................................................2-19

2.4.1 PGND Cable of the SRXU...................................................................................................................2-20

2.4.2 Power Cable of the SRXU...................................................................................................................2-20

2.4.3 AISG Multi-Wire Cable of the RRU/SRXU........................................................................................2-21

2.4.4 AISG Extension Cable of the RRU/SRXU..........................................................................................2-22

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2.4.5 CPRI Optical Cable..............................................................................................................................2-23

2.4.6 RF Jumper of the RRU/SRXU.............................................................................................................2-24

3 Installing RRU and SRXU Hardware.....................................................................................3-1

3.1 Information About the Installation..................................................................................................................3-3

3.1.1 Installation Modes of the RRU and SRXU............................................................................................3-3

3.1.2 Space Requirements of the RRU and SRXU.........................................................................................3-7

3.1.3 Cabling Specifications for the NodeB..................................................................................................3-11

3.1.4 Requirements for the RRU Cabling on a Tower..................................................................................3-13

3.1.5 Connections of RRU and SRXU Cables..............................................................................................3-19

3.1.6 Labels for DBS3836 Cables.................................................................................................................3-23

3.2 Procedure for Installing the RRU and SRXU...............................................................................................3-26

3.3 Preparing for the NodeB Installation............................................................................................................3-27

3.3.1 Unpacking Inspection for the NodeB...................................................................................................3-27

3.3.2 Tools and Instruments for NodeB Installation.....................................................................................3-29

3.4 Installing the RRU on the Ground or Rooftop..............................................................................................3-30

3.4.1 Installing a Single RRU........................................................................................................................3-30

3.4.2 Install Two RRUs.................................................................................................................................3-42

3.4.3 Install Three RRUs...............................................................................................................................3-57

3.5 Installing the RRU on the Tower..................................................................................................................3-75

3.5.1 Assembling the Parts of the RRU........................................................................................................3-75

3.5.2 Lifting the Assembled RRU.................................................................................................................3-79

3.5.3 Installing the Assembled RRU on the Tower.......................................................................................3-80

3.6 Installing the SRXU......................................................................................................................................3-83

3.6.1 Installing the SRXU on a Single RRU.................................................................................................3-84

3.6.2 Installing the SRXUs on the Two RRUs..............................................................................................3-87

3.6.3 Installing the SRXUs on the Three RRUs............................................................................................3-94

3.7 Installing RRU and SRXU Cables................................................................................................................3-97

3.7.1 Installing the PGND Cable of the RRU/SRXU...................................................................................3-98

3.7.2 Installing the -48 V DC Power Cable of the RRU/SRXU.................................................................3-100

3.7.3 Installing the RF Jumper of the RRU/SRXU.....................................................................................3-106

3.7.4 Installing the CPRI Optical Cable of the RRU/SRXU.......................................................................3-108

3.7.5 Installing the Alarm Cable of the RRU..............................................................................................3-112

3.7.6 Installing the AISG Multi-Wire Cable of the RRU/SRXU................................................................3-113

3.7.7 Installing the AISG Extension Cable of the RRU/SRXU..................................................................3-114

3.7.8 Opening and Closing the Cover Plate of the RRU Cabling Cavity...................................................3-114

3.7.9 Opening and Closing the Cover Plate of the SRXU Cabling Cavity.................................................3-114

3.8 Powering On the RRU/SRXU.....................................................................................................................3-114

3.9 Installing the Housing of the RRU and SRXU...........................................................................................3-116

3.10 Checklists for Hardware Installation of Distributed NodeBs and Mini NodeBs......................................3-117

4 Maintaining RRU and SRXU Hardware................................................................................4-1

4.1 Equipment Maintenance Items for the RRU/SRXU.......................................................................................4-2

4.2 Powering On/Off the RRU/SRXU..................................................................................................................4-2

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4.2.1 Powering On the RRU/SRXU................................................................................................................4-2

4.2.2 Powering Off the RRU/SRXU...............................................................................................................4-4

4.3 Replacing an RRU...........................................................................................................................................4-4

4.4 Replacing an SRXU........................................................................................................................................4-6

4.5 Replacing an Optical Module..........................................................................................................................4-8

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

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Figures

Figure 1-1 Wearing an ESD wrist strap...............................................................................................................1-5

Figure 1-2 Lifting a weight................................................................................................................................1-10

Figure 1-3 Slant angle........................................................................................................................................1-11

Figure 1-4 One meter higher than the eave........................................................................................................1-11

Figure 2-1 RRU....................................................................................................................................................2-2

Figure 2-2 Panels of the RRU..............................................................................................................................2-5

Figure 2-3 SRXU..................................................................................................................................................2-7

Figure 2-4 Panels of the SRXU............................................................................................................................2-9

Figure 2-5 PGND cable......................................................................................................................................2-11

Figure 2-6 2-hole terminal..................................................................................................................................2-11

Figure 2-7 –48 V DC power cable.....................................................................................................................2-12

Figure 2-8 CPRI optical cable............................................................................................................................2-13

Figure 2-9 AISG multi-wire cable......................................................................................................................2-14

Figure 2-10 AISG extension cable.....................................................................................................................2-15

Figure 2-11 Feeder jumper.................................................................................................................................2-16

Figure 2-12 Interconnect jumper........................................................................................................................2-16

Figure 2-13 Alarm cable.....................................................................................................................................2-18

Figure 2-14 PGND cable....................................................................................................................................2-20

Figure 2-15 2-hole terminal................................................................................................................................2-20

Figure 2-16 DC power cable..............................................................................................................................2-20

Figure 2-17 AISG multi-wire cable....................................................................................................................2-21

Figure 2-18 AISG extension cable.....................................................................................................................2-22

Figure 2-19 CPRI optical cable..........................................................................................................................2-23

Figure 2-20 Feeder jumper.................................................................................................................................2-24

Figure 2-21 Interconnect jumper........................................................................................................................2-25

Figure 3-1 Installation modes of one RRU..........................................................................................................3-4

Figure 3-2 Installation modes of one RRU and one SRXU.................................................................................3-4

Figure 3-3 Installation modes of two RRUs.........................................................................................................3-5

Figure 3-4 Installation modes of two RRUs and two SRXUs..............................................................................3-5

Figure 3-5 Installation modes of three RRUs.......................................................................................................3-6

Figure 3-6 Installation modes of three RRUs and three SRXUs..........................................................................3-7

Figure 3-7 Recommended space requirements of one RRU with and without the SRXU (unit: mm)................3-8

Figure 3-8 Minimal space requirements of one RRU with and without the SRXU (unit: mm)...........................3-9

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

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

.............................................................................................................................................................................3-10

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

Figure 3-12 Scenario of RRU cabling on a tower..............................................................................................3-14

Figure 3-13 PVC protection tube.......................................................................................................................3-15

Figure 3-14 Installing the cable clip...................................................................................................................3-16

Figure 3-15 Routing the cables in the cable rack...............................................................................................3-17

Figure 3-16 Installing the cable clip on the tower..............................................................................................3-18

Figure 3-17 Routing the cables in the cable rack...............................................................................................3-19

Figure 3-18 Cable connections of one RRU without the SRXU........................................................................3-20

Figure 3-19 Cable connections of one RRU with the SRXU.............................................................................3-21

Figure 3-20 Cable connections of multiple RRUs without the SRXUs.............................................................3-22

Figure 3-21 Cable connections of multiple RRUs with the SRXUs..................................................................3-22

Figure 3-22 Label for the BBU power cable (unit: mm)....................................................................................3-23

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

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

Figure 3-25 Label for the CPRI optical cable (unit: mm)..................................................................................3-24

Figure 3-26 Label for the RRU alarm cable (unit: mm).....................................................................................3-25

Figure 3-27 Label for the BBU alarm cable (unit: mm).....................................................................................3-25

Figure 3-28 Leading cable ties through the holes..............................................................................................3-25

Figure 3-29 Binding the label to the cable.........................................................................................................3-26

Figure 3-30 Mounting the upper fixture assembly.............................................................................................3-31

Figure 3-31 Holes in the fixture assembly.........................................................................................................3-31

Figure 3-32 Measuring L1 and L2.....................................................................................................................3-32

Figure 3-33 Holes in the multi-purpose attachment plate..................................................................................3-32

Figure 3-34 Securing the multi-purpose attachment plate to the mounting plate..............................................3-33

Figure 3-35 Installing the third pole fixture.......................................................................................................3-33

Figure 3-36 Installing the mounting plate..........................................................................................................3-34

Figure 3-37 Mounting the lower fixture assembly.............................................................................................3-35

Figure 3-38 Installed expansion bolt assemblies and the RRU..........................................................................3-36

Figure 3-39 Determining the anchor points.......................................................................................................3-36

Figure 3-40 Drilling a hole and installing the expansion bolt assembly............................................................3-37

Figure 3-41 Securing the mounting plate...........................................................................................................3-38

Figure 3-42 Filling tube, insulating washer, and insulating block.....................................................................3-38

Figure 3-43 One RRU in ordinary mode and the other in reverse mode...........................................................3-39

Figure 3-44 Securing the attachment plate.........................................................................................................3-40

Figure 3-45 Installing the module......................................................................................................................3-41

Figure 3-46 Securing the module.......................................................................................................................3-42

Figure 3-47 Top view of the two modules using the side-mounted installation method...................................3-43

Figure 3-48 Top view of the two modules using the rear-mounted installation method...................................3-44

Figure 3-49 Holes in the multi-purpose attachment plate..................................................................................3-44

Figure 3-50 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-44

Figures

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Figure 3-51 Installing the second mounting plate..............................................................................................3-45

Figure 3-52 Securing the second mounting plate to the first one.......................................................................3-46

Figure 3-53 Installing the second mounting plate..............................................................................................3-47

Figure 3-54 Securing the second mounting plate...............................................................................................3-47

Figure 3-55 Holes in the multi-purpose attachment plate..................................................................................3-48

Figure 3-56 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-48

Figure 3-57 Installing the second mounting plate..............................................................................................3-49

Figure 3-58 Securing the second mounting plate to the first one.......................................................................3-50

Figure 3-59 Removing the plastic housing.........................................................................................................3-51

Figure 3-60 Installing the module in reverse mode in the housing....................................................................3-52

Figure 3-61 Securing the attachment plate to the module that is in reverse mode.............................................3-52

Figure 3-62 Installing the first module...............................................................................................................3-53

Figure 3-63 Securing the first module................................................................................................................3-54

Figure 3-64 Securing the attachment plate to the module that is in ordinary mode...........................................3-55

Figure 3-65 Installing the second module..........................................................................................................3-55

Figure 3-66 Securing the second module...........................................................................................................3-56

Figure 3-67 Rear-mounted RRUs with the cabling cavities on the same side...................................................3-57

Figure 3-68 Top view of the three modules using the side-mounted installation method.................................3-58

Figure 3-69 Top view of the three modules using the hybrid installation method.............................................3-59

Figure 3-70 Holes in the multi-purpose attachment plate..................................................................................3-59

Figure 3-71 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-60

Figure 3-72 Installing the second mounting plate..............................................................................................3-60

Figure 3-73 Securing the second mounting plate to the first one.......................................................................3-61

Figure 3-74 Installing the third mounting plate..................................................................................................3-62

Figure 3-75 Securing the third mounting plate to the first one..........................................................................3-63

Figure 3-76 Holes in the multi-purpose attachment plate..................................................................................3-63

Figure 3-77 Securing the multi-purpose attachment plate to the bottom of the second mounting plate............3-64

Figure 3-78 Installing the second mounting plate..............................................................................................3-64

Figure 3-79 Securing the second mounting plate to the first one.......................................................................3-65

Figure 3-80 Installing the third mounting plate..................................................................................................3-66

Figure 3-81 Securing the second mounting plate to the first one.......................................................................3-67

Figure 3-82 Securing the attachment plate to the first module..........................................................................3-68

Figure 3-83 Installing the first module...............................................................................................................3-69

Figure 3-84 Securing the first module................................................................................................................3-70

Figure 3-85 Removing the plastic housing.........................................................................................................3-70

Figure 3-86 Installing the module in reverse mode in the housing....................................................................3-71

Figure 3-87 Securing the attachment plate to the module that is in reverse mode.............................................3-71

Figure 3-88 Installing the second module..........................................................................................................3-72

Figure 3-89 Securing the second module...........................................................................................................3-73

Figure 3-90 Installing the third module..............................................................................................................3-74

Figure 3-91 Securing the third module...............................................................................................................3-75

Figure 3-92 Holes in the multi-purpose attachment plate..................................................................................3-76

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Figure 3-93 Securing the multi-purpose attachment plate.................................................................................3-76

Figure 3-94 Installing a pole fixture...................................................................................................................3-77

Figure 3-95 Securing the attachment plate.........................................................................................................3-77

Figure 3-96 Assembling the module and mounting plate..................................................................................3-78

Figure 3-97 Securing the module and mounting plate.......................................................................................3-79

Figure 3-98 Assembled RRU tied with the rope................................................................................................3-79

Figure 3-99 Mounting the upper fixture assembly.............................................................................................3-80

Figure 3-100 Holes in the fixture assembly.......................................................................................................3-81

Figure 3-101 Measuring L1 and L2...................................................................................................................3-81

Figure 3-102 Installing the assembled RRU......................................................................................................3-82

Figure 3-103 Mounting the lower fixture assembly...........................................................................................3-83

Figure 3-104 SRXU installed on the single RRU..............................................................................................3-84

Figure 3-105 Remove the plastic housing..........................................................................................................3-85

Figure 3-106 Securing the connecting boards....................................................................................................3-85

Figure 3-107 Securing the attachment plate to the SRXU.................................................................................3-86

Figure 3-108 Installing the SRXU......................................................................................................................3-86

Figure 3-109 Securing the SRXU......................................................................................................................3-87

Figure 3-110 SRXUs installed on the two RRUs...............................................................................................3-88

Figure 3-111 Remove the plastic housings........................................................................................................3-89

Figure 3-112 Securing the connecting boards to the RRU module that is in ordinary mode.............................3-90

Figure 3-113 Securing the attachment plate to one SRXU................................................................................3-90

Figure 3-114 Installing the SRXU......................................................................................................................3-91

Figure 3-115 Securing the SRXU......................................................................................................................3-92

Figure 3-116 Remove the plastic housings........................................................................................................3-93

Figure 3-117 SRXUs installed on the two rear-mounted RRUs........................................................................3-93

Figure 3-118 SRXUs installed on the three RRUs.............................................................................................3-94

Figure 3-119 Remove the plastic housings........................................................................................................3-95

Figure 3-120 Securing the connecting boards....................................................................................................3-96

Figure 3-121 Installing the third SRXU.............................................................................................................3-96

Figure 3-122 Securing the third SRXU..............................................................................................................3-97

Figure 3-123 Connecting the PGND cable (1)...................................................................................................3-98

Figure 3-124 Connecting the OT terminal.........................................................................................................3-99

Figure 3-125 Connecting the PGND cable (2)...................................................................................................3-99

Figure 3-126 Cable trough for the PGND cable of the SRXU.........................................................................3-100

Figure 3-127 Power cable with two OT terminals...........................................................................................3-101

Figure 3-128 Determining lengths of power cable for different operation......................................................3-101

Figure 3-129 Stripping the cable......................................................................................................................3-102

Figure 3-130 Two OT terminals on the power cable.......................................................................................3-102

Figure 3-131 Removing the jacket from the power cable................................................................................3-103

Figure 3-132 Cable troughs in the cabling cavity............................................................................................3-103

Figure 3-133 Opening the cover.......................................................................................................................3-104

Figure 3-134 Shielding layer pressed by the strap...........................................................................................3-104

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Figure 3-135 Twisting the shielding layer into one strand...............................................................................3-105

Figure 3-136 Power cable with the heat-shrinkable tube.................................................................................3-105

Figure 3-137 Waterproofed joints....................................................................................................................3-107

Figure 3-138 CPRI_W port in the RRU cabling cavity...................................................................................3-109

Figure 3-139 Strap and waterproof filler..........................................................................................................3-110

Figure 3-140 CPRI_W port in the SRXU cabling cavity.................................................................................3-111

Figure 3-141 Cable trough for the optical cable in the SRXU cabling cavity.................................................3-112

Figure 3-142 Cable troughs in the cabling cavity............................................................................................3-113

Figure 3-143 Installing the housing..................................................................................................................3-116

Figure 3-144 Securing the housing..................................................................................................................3-117

Figure 4-1 Removing the screws at the bottom of the mounting plate................................................................ 4-5

Figure 4-2 Removing the screws at the bottom of the SRXU..............................................................................4-7

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Tables

Table 2-1 LEDs on the RRU................................................................................................................................ 2-3

Table 2-2 Ports and LEDs on the panels of the RRU...........................................................................................2-6

Table 2-3 LEDs on the SRXU..............................................................................................................................2-7

Table 2-4 Ports and LEDs on the panels of the SRXU......................................................................................2-10

Table 2-5 Pin assignment for the wires of the –48 V DC power cable (North American Standard).................2-12

Table 2-6 Pin assignment for the wires of the –48 V DC power cable (European Standard)............................2-12

Table 2-7 Pin assignment for the fiber tails of the CPRI optical cable..............................................................2-13

Table 2-8 Installation positions of the CPRI optical cable.................................................................................2-13

Table 2-9 Pin assignment for the wires of the AISG multi-wire cable..............................................................2-14

Table 2-10 Pin assignment for the wires of the AISG extension cable..............................................................2-15

Table 2-11 RF jumper connections of the RRU.................................................................................................2-17

Table 2-12 Pin assignment for the wires of the alarm cable...............................................................................2-19

Table 2-13 Pin assignment for the wires of the DC power cable.......................................................................2-21

Table 2-14 Pin assignment for the wires of the AISG multi-wire cable............................................................2-22

Table 2-15 Pin assignment for the wires of the AISG extension cable..............................................................2-23

Table 2-16 Pin assignment for the fiber tails of the CPRI optical cable............................................................2-24

Table 2-17 Installation positions of the CPRI optical cable...............................................................................2-24

Table 2-18 RF jumper connections of the RRU.................................................................................................2-25

Table 3-1 Tools and instruments........................................................................................................................3-29

Table 3-2 Connecting the antenna jumper to the appropriate RF port.............................................................3-106

Table 3-3 LEDs on the RRU............................................................................................................................3-115

Table 3-4 LEDs on the SRXU..........................................................................................................................3-115

Table 3-5 Checklist for NodeB installation......................................................................................................3-117

Table 3-6 Checklist for cable connections.......................................................................................................3-118

Table 3-7 Checklist for power cable connections.............................................................................................3-119

Table 3-8 Checklist for PGND cable connections............................................................................................3-119

Table 3-9 Checklist for signal cable connections.............................................................................................3-120

Table 4-1 Equipment maintenance items for the RRU/SRXU.............................................................................4-2

Table 4-2 LEDs on the RRU................................................................................................................................ 4-3

Table 4-3 LEDs on the SRXU..............................................................................................................................4-3

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About This Document

Purpose

This document describes the RRU hardware and provides instructions in hardware installation,

cable connections, hardware installation check, and hardware maintenance. This document is

applicable to RRU3804 and RRU3801E.

Product Versions

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

Product Name Product Version

RRU V100R009

V100R010

V200R001

Intended Audience

This document is intended for:

lNodeB installers

lSystem engineers

lSite maintenance engineers

Change History

For changes in the document, refer to Changes in RRU User Guide.

Organization

1 Safety Information

2 RRU and SRXU Hardware

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

3 Installing RRU and SRXU Hardware

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This describes how to install the hardware, route the cables, and check the hardware installation

of the RRU and SRXU.

4 Maintaining RRU and SRXU Hardware

After the RRU and SRXU are deployed, accepted, and put into use, routine maintenance is

performed to ensure the functionality of the modules.

Conventions

1. Symbol Conventions

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

Symbol Description

DANGER

Indicates a hazard with a high level of risk that, if not avoided,

will result in death or serious injury.

WARNING

Indicates a hazard with a medium or low level of risk which, if

not avoided, could result in minor or moderate injury.

CAUTION

Indicates a potentially hazardous situation that, if not avoided,

could cause equipment damage, data loss, and performance

degradation, or unexpected results.

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

time.

NOTE Provides additional information to emphasize or supplement

important points of the main text.

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files,directories,folders,and users are in boldface. For

example,log in as user root .

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

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Convention Description

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

{x | y | ...} Alternative items are grouped in braces and separated by vertical

bars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets and

separated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by vertical

bars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by vertical

bars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions

Convention Description

Boldface 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 .

5. Keyboard Operation

Convention Description

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

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+A

means the three keys should be pressed concurrently.

Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the two

keys should be pressed in turn.

6. Mouse Operation

Action Description

Click Select and release the primary mouse button without moving the

pointer.

Double-click Press the primary mouse button twice continuously and quickly

without moving the pointer.

Drag Press and hold the primary mouse button and move the pointer

to a certain position.

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1 Safety Information

1.1 Safety Precautions

This section describes certain safety precautions and helps to choose the measurement device

and testing device. Read and follow these safety precautions before installing, operating, and

maintaining Huawei devices.

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully to

minimize the possibility of accidents.

The Danger, Caution, and Note items in the package of documents do not cover all the safety

precautions that must be followed. They only provide the generic safety precautions for

operations.

Symbols

DANGER

This symbol indicates that casualty or serious accident may occur if you ignore the safety

instruction.

CAUTION

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

NOTE

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

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Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautions

provided in the documents are supplementary. You must comply with the local safety

regulations.

General Installation Requirements

The personnel in charge of installation and maintenance must be trained and master the correct

operating methods and safety precautions before beginning work.

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

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

lOnly the qualified specialists are allowed to remove the safety facilities, and repair the

device.

lAny replacement of the device or part of the device (including the software) or any change

made to the device must be performed by qualified or authorized personnel of Huawei.

lAny fault or error that might cause safety problems must be reported immediately to the

personnel in charge.

Grounding Requirements

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

lGround the device before installation and remove the ground cable after uninstallation.

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

conductor.

lThe unit (or system) must be permanently connected to the protection ground before

operation. Check the electrical connection of the device before operation and ensure that

the device is reliably grounded.

Safety of Personnel

Ensure the following:

lWhen lightning strikes, do not operate the device and cables.

lWhen lightning strikes, unplug the AC power connector. Do not use the fixed terminal or

touch the terminal or antenna connector.

NOTE

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

lTo prevent electric shock, do not connect safety extra-low voltage (SELV) circuits to

telecommunication network voltage (TNV) circuits.

lTo prevent laser radiation from injuring your eyes, never look into the optical fiber outlet

with unaided eyes.

lTo prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, gloves

and wrist strap, and remove conductors such as jewelry and watch before operation.

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Device Safety

lBefore operation, the device must be secured on the floor or other fixed objects, such as

the walls and the mounting racks.

lDo not block ventilation openings while the system is running.

lWhen installing the panel, tighten the screw with the tool.

1.2 Electricity Safety

High Voltage

DANGER

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

the high voltage power supply or contact through damp objects may result in fatal danger.

lNon-standard and improper high voltage operations may result in fire and electric shock.

lThe personnel who install the AC facility must be qualified to perform operations on high

voltage and AC power supply facilities.

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

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

lWhen operating the high voltage and AC power supply facilities, use the specific tools

instead of common tools.

lWhen the operation is performed in a damp environment, ensure that water is kept off the

device. If the cabinet is damp or wet, shut down the power supply immediately.

Thunderstorm

The following requirements are suitable only for the wireless base station or the device with an

antenna or GPS antenna.

DANGER

In a thunderstorm, do not perform operations on high voltage and AC power supply facilities or

on a steel tower and mast.

High Electrical Leakage

CAUTION

Ground the device before powering on the device. Otherwise, the personnel and device are in

danger.

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If the "high electrical leakage" flag is stuck to the power terminal of the device, you must ground

the device before powering it on.

Power Cable

CAUTION

Do not install and remove the power cable with a live line. Transient contact between the core

of the power cable and the conductor may generate electric arc or spark, which may cause fire

or eye injury.

lBefore installing or removing the power cable, turn off the power switch.

lBefore connecting the power cable, ensure that the power cable and label comply with the

requirements of the actual installation.

Fuse

CAUTION

To ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same type

and specifications.

Electrostatic Discharge

CAUTION

The static electricity generated by the human body may damage the electrostatic sensitive

components on the circuit board, such as the large-scale integrated circuit (LIC).

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

lMovement of body parts

lClothes friction

lFriction between shoes and the ground

lHolding plastic in hand

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

Before contacting the device, plug boards, circuit boards, and application specific integrated

circuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components from

being damaged by the static electricity in the human body.

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

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Figure 1-1 Wearing an ESD wrist strap

1.3 Inflammable Environment

DANGER

Do not place the device in the environment that has inflammable and explosive air or fog. Do

not perform any operation in this environment.

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

1.4 Battery

Storage Battery

DANGER

Before handling the storage battery, read the safety precautions for the handling and connection

of the storage battery.

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

following:

lPrevent any short-circuit.

lPrevent the electrolyte from overflowing and leakage.

Electrolyte overflow may damage the device. It will corrode the metal parts and the circuit

boards, and ultimately damage the device and cause short-circuit of the circuit boards.

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General Operations

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

lUse special insulation tools.

lUse eye protection devices and operate with care.

lWear rubber gloves and an apron in case of an electrolyte overflow.

lAlways keep the battery upright when moving. Do not place the battery upside down or tilt

it.

Short-Circuit

DANGER

Short-circuit of the battery may cause injury. Although the voltage of a battery is low, high

transient current generated by short-circuit will release a surge of power.

Keep metal objects away from the battery to prevent short circuit. If they have to be used,

disconnect the battery in use before performing any other operation.

Harmful Gas

CAUTION

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

in fire or device corrosion.

lLay the storage battery horizontally and fix it properly.

The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place with

good ventilation and take precautions against fire.

High Temperature

CAUTION

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

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

overflow occurs, handle the acid immediately.

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Acid

CAUTION

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

When handling a leaky battery, protect against the possible damage caused by the acid. Use the

following materials to absorb and neutralize acid spills:

lSodium bicarbonate (baking soda): NaHCO3

lSodium carbonate (soda): Na2CO3

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

Lithium Battery

CAUTION

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

lReplace the lithium battery with the same or equivalent type recommended by the

manufacturer.

lDispose of the used battery according to the instructions provided by the manufacturer.

lDo not dispose of the lithium battery in fire.

1.5 Radiation

Electromagnetic Field Exposure

CAUTION

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

Before installing or maintaining an antenna on a steel tower or mast with a large number of

transmitter antennas, the operator should coordinate with all parties to ensure that the transmitter

antennas are shut down.

The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for the

installation and operation of BTSs are given in the following section. Operators are also required

to comply with the related local regulations on erecting BTSs.

lThe antenna should be located in an area that is inaccessible to the public where the RF

radiation exceeds the stipulated value.

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lIf the areas where RF radiation exceeds the stipulated value are accessible to workers,

ensure that workers know where these areas are. They can shut down the transmitters before

entering these areas. Such areas may not exist; but if they exist, the areas must be within a

range of less than 10 m around the antennas.

lEach forbidden zone should be indicated by a physical barrier and striking sign to warn the

public or workers.

Laser

CAUTION

When handling optical fibers, do not stand close to, or look into the optical fiber outlet with

unaided eyes.

Laser transceivers or transmitters are used in the optical transmission system and associated test

tools. Because the laser that is transmitted through the optical fiber produces a small beam of

light, it has a very high power density and is invisible to human eyes. If a beam of light enters

the eye, the retina may be damaged.

Normally, staring into the end of an unterminated optical fiber or broken optical fiber with the

unaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyes

may, however, be damaged if an optical tool such as a microscope, magnifying glass or eye

loupe is used to stare into the bare optical fiber end.

Read the following guidelines to prevent laser radiation:

lOnly the trained and authorized personnel can perform the operation.

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

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

lNever look into the end of an exposed optical fiber or an open connector if you cannot

ensure that the optical source is switched off.

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

lBefore opening the front door of an optical transmission system, ensure that you are not

exposed to laser radiation.

lNever use an optical tool such as a microscope, a magnifying glass, or an eye loupe to look

into the optical fiber connector or end.

Read the following instructions before handling optical fibers:

lOnly the trained personnel can cut and splice optical fibers.

lBefore cutting or splicing an optical fiber, ensure that the optical fiber is disconnected from

the optical source. After disconnecting the optical fiber, use protecting caps to protect all

the optical connectors.

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1.6 Working at Heights

CAUTION

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

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

lThe personnel who work at heights must be trained.

lThe operating machines and tools should be carried and handled safely to prevent them

from falling.

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

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

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

Lifting Weights

CAUTION

Do not access the areas under the arm of the crane and the goods in suspension when lifting

weights.

lEnsure that the operators have been trained and qualified.

lCheck the weight lifting tools and ensure that they are intact.

lLift the weight only when the weight lifting tools are firmly mounted onto the weight-

bearing object or the wall.

lUse a concise instruction to prevent incorrect operation.

lThe angle between the two cables should be less than or equal to 90o in the lifting of weights

(See Figure 1-2).

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Figure 1-2 Lifting a weight

Safety Guide on Ladder Use

Checking the Ladder

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

lNever overload the ladder.

Placing the Ladder

lThe slant angle is preferred to be 75o. The slant can be measured with the angle square or

with arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladder

on the ground and take protective measures on the base of the ladder against slippage. Place

the ladder on a stable ground.

When climbing the ladder, ensure the following:

lThe gravity of the body does not shift from the edge of the ladder.

lKeep balance on the ladder before performing any operation.

lDo not climb higher than the fourth highest step of the ladder.

If you tend to climb to the roof, the length of the ladder should be at least one meter higher than

the eave, as shown in Figure 1-4.

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Figure 1-3 Slant angle

Figure 1-4 One meter higher than the eave

1.7 Mechanical Safety

Drilling

CAUTION

Do not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damage

the electromagnetic shielding and internal cables. Metal shavings from the drilling may result

in a short-circuit of the circuit board if they get into the cabinet.

lBefore drilling a hole on the cabinet, remove the cables from the cabinet.

lDuring the drilling, wear blinkers to protect your eyes.

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lDuring the drilling, wear the protective gloves.

lPrevent the metal shavings from getting into the cabinet. After drilling, clean the metal

shavings in time.

Handling Sharp Objects

CAUTION

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

Handling Fans

lWhen replacing a component, place the component, screw, and tool at a safe place to prevent

them from falling into the running fan.

lWhen replacing the ambient equipment around the fan, do not place the finger or board

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

Moving Heavy Objects

Wear the protective gloves when moving heavy objects.

CAUTION

lBe careful when moving heavy objects.

lWhen moving the chassis outwards, be aware about the unfixed or heavy objects on the

chassis to prevent injury.

lTwo persons should be available to move a chassis; one person must not move a heavy

chassis. When moving a chassis, keep your back straight and move stably to prevent a

sprain.

lWhen moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold the

handle of the installed modules in the chassis, such as the power module, fan module, or

board.

1.8 Others

Inserting and Removing a Board

CAUTION

When inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to prevent

any bent pins on the backplane.

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lInsert the board along the guide rail.

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

lDo not remove the active board before powering off.

lWhen holding a board in hand, do not touch the board circuit, components, connectors, or

connection slots.

Bundling Signal Cables

CAUTION

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

Cabling Requirements

At a very low temperature, movement of the cable may damage the plastic skin of the cable. To

ensure the construction safety, comply with the following requirements:

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

lIf cables are stored in the place below 0oC, move the cables into a place at a room

temperature and store the cables for more than 24 hours before installation.

lMove the cables with care, especially at a low temperature. Do not drop the cables directly

from the vehicle.

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2 RRU and SRXU Hardware

About This Chapter

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

2.1 RRU Equipment

The RRU is a remote radio unit.

2.2 SRXU Equipment

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

2.3 RRU Cables

The RRU cables include the PGND cable, power cable, AISG multi-wire cable, AISG extension

cable, CPRI optical cable, RF jumper, and alarm cable.

2.4 SRXU Cables

The SRXU cables include the PGND cable, power cable, AISG multi-wire cable, AISG

extension cable, CPRI optical cable, and RF jumper.

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2.1 RRU Equipment

The RRU is a remote radio unit.

The RRU has the following functions:

lThe RRU receives RF signals from the antenna system, down-converts the signals to IF

signals, and then transmits them to the BBU or the macro NodeB after amplification,

analog-to-digital conversion, digital down-conversion, matched filtering, and Digital

Automatic Gain Control (DAGC).

lThe RRU receives downlink baseband signals from the BBU or the macro NodeB, forwards

data from its cascaded RRU, performs filtering and digital-to-analog conversion, and up-

converts RF signals to the transmitting frequency band.

lThe RRU multiplexes RX and TX signals over RF channels and filters the RX signals and

TX signals. This enables the RX signals and TX signals to share the same antenna path.

2.1.1 Appearance of the RRU

The RRU features a modular structure with its ports at the module bottom and on the cabling

cavity.

2.1.2 LEDs on the RRU

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

2.1.3 Panels of the RRU

The RRU has a bottom panel, a cabling cavity panel, and an LED panel.

2.1.1 Appearance of the RRU

The RRU features a modular structure with its ports at the module bottom and on the cabling

cavity.

Figure 2-1 shows the RRU. On the left is a front view of the RRU without the housing, in the

middle is a side view of the RRU without the housing, and on the right is a front view of the

RRU housing.

Figure 2-1 RRU

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2.1.2 LEDs on the RRU

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

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

Table 2-1 describes the LEDs and their status.

Table 2-1 LEDs on the RRU

Label Color Status Description

RUN Green ON The module has power input,

yet the module is faulty.

OFF The module has no power input

or is reporting alarms.

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

0.5s ON, 0.5s OFF Software is being loaded to the

module.

ALM Red ON The RRU is reporting alarms

(excluding VSWR-related

alarms).

OFF The module is operational.

TX_ACT Green ON The module is running.

OFF No specific meaning

VSWR Red ON VSWR-related alarms are

reported.

OFF No VSWR-related alarm is

reported.

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

ON (red) The optical module receives

local alarms related to LOS.

0.5s ON, 0.5s OFF

(red)

The CPRI link is out of lock.

OFF The optical module is not in

position or is powered off.

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

ON (red) The optical module receives

local alarms related to LOS.

0.5s ON, 0.5s OFF

(red)

The CPRI link is out of lock.

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Label Color Status Description

OFF The optical module is not in

position or is powered off.

2.1.3 Panels of the RRU

The RRU has a bottom panel, a cabling cavity panel, and an LED panel.

Figure 2-2 shows the panels of the RRU.

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Figure 2-2 Panels of the RRU

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

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

No. Item Label Remarks

1Ports at the

bottom

RX_IN/OUT Port for interconnection between

combined cabinets

RET/PWR_SRXU Port for the RET antenna or power output

to the SRXU

ANT_TX/RXA Port for main TX/RX diversity

ANT_RXB Port for RX diversity

2 Ports on the

cabling cavity

RS485/EXT_ALM Port for alarms

CPRI_E Optical ports

CPRI_W

RTN(+) Ports for power supply

NEG(-)

PGND Grounding bolt

3 LED RUN For details, refer to 2.1.2 LEDs on the

RRU.

ALM

TX_ACT

VSWR

CPRI_W

CPRI_E

2.2 SRXU Equipment

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

The SRXU receives RF signals from the antenna system, down-converts the RF signals to IF

signals, and then transmits them to the RRU after amplification, analog-to-digital conversion,

digital down-conversion, matched filtering, and DAGC. The RRU forwards the signals to the

BBU or the macro NodeB.

2.2.1 Appearance of the SRXU

The SRXU features a modular structure with its ports at the module bottom and on the cabling

cavity.

2.2.2 LEDs on the SRXU

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

2.2.3 Panels of the SRXU

The SRXU has a bottom panel, a cabling cavity panel, and an LED panel.

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2.2.1 Appearance of the SRXU

The SRXU features a modular structure with its ports at the module bottom and on the cabling

cavity.

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

view of the SRXU.

Figure 2-3 SRXU

2.2.2 LEDs on the SRXU

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

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

Table 2-3 describes the LEDs and their status.

Table 2-3 LEDs on the SRXU

Label Color Status Description

RUN Green ON The module has power input,

yet the module is faulty.

OFF The module has no power input,

or the module is faulty.

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

0.5s ON, 0.5s OFF Software is being loaded to the

module.

ALM Red ON The module is reporting alarms.

OFF The module is operational.

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

ON (red) The optical module receives

local alarms related to LOS.

0.5s ON, 0.5s OFF

(red)

The CPRI link is out of lock.

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Label Color Status Description

OFF The optical module is not in

position or is powered off.

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

ON (red) The optical module receives

local alarms related to LOS.

0.5s ON, 0.5s OFF

(red)

The CPRI link is out of lock.

OFF The optical module is not in

position or is powered off.

2.2.3 Panels of the SRXU

The SRXU has a bottom panel, a cabling cavity panel, and an LED panel.

Figure 2-4 shows the panels of the SRXU.

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Figure 2-4 Panels of the SRXU

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

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

No. Item Label Description

1Ports at the

bottom

PWR_SRXU Socket for power supply

ANT_RXC Port for RX diversity

ANT_RXD Port for RX diversity

RX_IN/OUT Port for interconnection between

combined cabinets

RET Port for the RET antenna

2 Ports on the

cabling cavity

CPRI_E Optical ports

CPRI_W

PGND Grounding bolt

3 LEDs RUN For details, refer to 2.1.2 LEDs on the

RRU.

ALM

CPRI_W

CPRI_E

2.3 RRU Cables

The RRU cables include the PGND cable, power cable, AISG multi-wire cable, AISG extension

cable, CPRI optical cable, RF jumper, and alarm cable.

2.3.1 PGND cable of the RRU

The PGND cable ensures the grounding of the RRU.

2.3.2 Power Cable of the RRU

The RRU uses a shielded -48 V DC power cable. The cable feeds external -48 V DC power to

the RRU.

2.3.3 CPRI Optical Cable

This describes the CPRI optical cable. It connects the BBU3836 to the RRU and transmits CPRI

signals between them.

2.3.4 AISG Multi-Wire Cable of the RRU/SRXU

The five-meter-long AISG multi-wire cable connects the RRU/SRXU to the Remote Control

Unit (RCU). If both RRU and SRXU are installed, the AISG multi-wire cable only connects the

SRXU and the RCU. This cable is optional.

2.3.5 AISG Extension Cable of the RRU/SRXU

When the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-

wire cable is not long enough to cover the distance. In this case, the AISG extension cable is

used. The AISG extension cable is 15 m long.

2.3.6 RF Jumper of the RRU/SRXU

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The RF jumper of the RRU can be categorized into two types: feeder jumper and interconnect

jumper. The interconnect jumper is optional, depending on the site configuration.

2.3.7 Alarm Cable of the RRU

The cable transmits the 2-channel Boolean alarm signals and 1-channel RS485 signals from

external devices to the RRU. Thus, the external signals are monitored.

2.3.1 PGND cable of the RRU

The PGND cable ensures the grounding of the RRU.

Appearance

The green and yellow PGND cable is a single cable with a cross-sectional area of 16 mm2. Both

ends of the cable are OT terminals. If you prepare the cable by yourself, it is recommended to

use a copper-based cable with a minimum cross-sectional area of 16 mm2.

Figure 2-5 shows the PGND cable.

Figure 2-5 PGND cable

OT terminals need to be added on site. You can determine the color of the cable and whether to

use 2-hole terminals according to local standards.

Figure 2-6 shows the 2-hole terminal.

Figure 2-6 2-hole terminal

Installation Position

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

is connected to the nearest grounding bar.

2.3.2 Power Cable of the RRU

The RRU uses a shielded -48 V DC power cable. The cable feeds external -48 V DC power to

the RRU.

Appearance

The cable has two OT terminals at one end and bare wire at the other end, as shown in Figure

2-7.

The OT terminals need to be made on site.

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Figure 2-7 –48 V DC power cable

Pin Assignment

The -48 V DC power cable is a 2-wire cable. Table 2-5 and Table 2-6 describes the pin

assignment for the wires of the -48 V DC power cable.

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

Wire Type Wire Color

NEG Blue

RTN Black

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

Wire Type Wire Color

NEG Blue

RTN Brown

Installation Position

At one end of the cable, the OT terminal on the blue wire is connected to the NEG(-) port on the

cabling cavity of the RRU, and the OT terminal on the black or brown wire is connected to the

RTN(+) port on the cabling cavity of the RRU.

At the other end of the cable, a proper terminal is made depending on field requirements and is

then connected to the power supply on site.

2.3.3 CPRI Optical Cable

This describes the CPRI optical cable. It connects the BBU3836 to the RRU and transmits CPRI

signals between them.

Appearance

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

Figure 2-8 shows the CPRI optical cable.

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Figure 2-8 CPRI optical cable

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

(3) Fiber tail

Pin Assignment

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

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

Label Color Connect to...

1A Orange RX port on the RRU

1B Gray TX port on the RRU

2A Orange TX port on the WBBPa

2B Gray RX port on the WBBPa

Installation Position

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

Table 2-8 Installation positions of the CPRI optical cable

One End The Other End

CPRI port on the WBBPa CPRI_W port on the RRU

2.3.4 AISG Multi-Wire Cable of the RRU/SRXU

The five-meter-long AISG multi-wire cable connects the RRU/SRXU to the Remote Control

Unit (RCU). If both RRU and SRXU are installed, the AISG multi-wire cable only connects the

SRXU and the RCU. This cable is optional.

Appearance

The cable has a waterproof DB9 connector at one end and a standard AISG female connector at

the other end, as shown in Figure 2-9.

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Figure 2-9 AISG multi-wire cable

Pin Assignment

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

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

X1 End X2 End Wire Type Remarks

X1.1 X2.1 Twisted pair +12 V

X1.7 X2.7 Twisted pair DC-GND

X1.9 AISG_Switch

X1.3 X2.3 Twisted pair RS485 -

X1.5 X2.5 RS485 +

Installation Position

If only the RRU is installed, the waterproof DB9 connector is linked to the RET/PWR_SRXU

port at the bottom of the RRU, and the standard AISG female connector is linked to the

corresponding connector on the RCU or to the AISG extension cable.

If both the RRU and the SRXU are installed, the waterproof DB9 connector is linked to the RET

port at the bottom of the SRXU, and the standard AISG female connector is linked to the

corresponding connector on the RCU or to the AISG extension cable.

2.3.5 AISG Extension Cable of the RRU/SRXU

When the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-

wire cable is not long enough to cover the distance. In this case, the AISG extension cable is

used. The AISG extension cable is 15 m long.

Appearance

The cable has a standard AISG male connector at one end and a standard AISG female connector

at the other end, as shown in Figure 2-10.

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Figure 2-10 AISG extension cable

Pin Assignment

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

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

X1 End X2 End Wire Color Wire Type Remarks

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

Blue

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

Orange

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

X1.5 X2.5 Green RS485 A

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

Brown

Installation Position

The AISG female connector is linked to the corresponding connector on the RCU, and the AISG

male connector is linked to the AISG female connector of the AISG multi-wire cable.

2.3.6 RF Jumper of the RRU/SRXU

The RF jumper of the RRU can be categorized into two types: feeder jumper and interconnect

jumper. The interconnect jumper is optional, depending on the site configuration.

2.3.6.1 Antenna Jumper of the RRU/SRXU

The antenna jumper transmits and receives RF signals.

2.3.6.2 Interconnect Jumper of the RRU/SRXU

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

2.3.6.3 RF Jumper Connections of the RRU

One end of the RF jumper is connected to the RF ports on the RRU and the other end to the

feeder. Which RF port to use depends on the networking modes.

Antenna Jumper of the RRU/SRXU

The antenna jumper transmits and receives RF signals.

Appearance

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

Figure 2-11 Feeder jumper

Installation Position

The antenna jumper with indefinite length is selected according to the distance between the

antenna and the RRU/SRXU. Connectors are made on site.

lWhen the distance between the antenna and the RRU/SRXU is shorter than 14 m, the RRU/

SRXU is directly connected to the antenna through the antenna jumper.

lWhen the distance between the antenna and the RRU/SRXU is longer than 14 m, the antenna

jumper should be shorter than 2 m. If you prepare the jumper by yourself, it is recommended

that the feeder jumper be 2 m long at most. Ensure that the antenna jumper is connected to

the feeder before being connected to the RRU/SRXU and the antenna.

Interconnect Jumper of the RRU/SRXU

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

Appearance

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

2-12.

Figure 2-12 Interconnect jumper

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Installation Position

The 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeled

RX_IN/OUT on two RRUs or two SRXUs respectively.

RF Jumper Connections of the RRU

One end of the RF jumper is connected to the RF ports on the RRU and the other end to the

feeder. Which RF port to use depends on the networking modes.

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

Table 2-11 RF jumper connections of the RRU

Typical

Networking

Mode

Antenna Type and

Quantity of RRUs

Cable Connection

1 x 1 in no TX

diversity mode

lOne RRU

lOne dual polarization

antenna

lTwo antenna jumpers

lThe DIN connectors of the two feeder

jumpers link to the ANT_TX/RXA and

ANT_RXB ports at the bottom of the

RRU.

1 x 2 in no TX

diversity mode

2 x 1 in no TX

diversity mode

lTwo RRUs

lTwo dual polarization

antennas

lFour antenna jumpers

lThe DIN connectors of the four

antenna jumpers are linked to the

ANT_TX/RXA ports and ANT_RXB

ports on RRU 0 and RRU 1.

2 x 2 in no TX

diversity mode

1 x 1 in TX diversity

mode

lTwo RRUs

lOne dual polarization

antenna

lTwo feeder jumpers and one

interconnect jumper

lThe DIN connectors of the two feeder

jumpers are linked to the ANT_TX/

RXA ports on RRU 0 and RRU 1.

lThe interconnect jumper is connected

to the RX_IN/OUT ports on RRU 0 and

RRU 1 that are combined.

1 x 2 in TX diversity

mode

3 x 1 in no TX

diversity mode

lThree RRUs

lThree dual polarization

antennas

lSix antenna jumpers

lThe DIN connectors of the six antenna

jumpers are linked to the ANT_TX/

RXA ports and ANT_RXB ports on

RRU 0, RRU 1, and RRU 2.

3 x 2 in no TX

diversity mode

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Typical

Networking

Mode

Antenna Type and

Quantity of RRUs

Cable Connection

4-way RX diversity lOne RRU

lOne SRXU

lTwo antenna jumpers and one DC

power cable

lThe DIN connectors of the two antenna

jumpers are linked to the ANT_RXC

and ANT_RXD ports at the bottom of

the SRXU.

lOne end of the DC power cable is

connected to the RET/PWR_SRXU

port at the bottom of the RRU, and the

other end is connected to the

PWR_SRXU socket at the bottom of

the SRXU.

2.3.7 Alarm Cable of the RRU

The cable transmits the 2-channel Boolean alarm signals and 1-channel RS485 signals from

external devices to the RRU. Thus, the external signals are monitored.

Appearance

The cable has a DB15 male connector at one end and eight cord end terminals at the other end,

as shown in Figure 2-13.

NOTE

If the cord end terminals of the cable do no match the ports on the external devices, cut off the cord end

terminals and make proper terminals on site.

Figure 2-13 Alarm cable

Pin Assignment

The cable can transmit 2-channel Boolean alarm signals and 1-channel RS485 signals. Table

2-12 describes the pin assignment for the wires of the alarm cable.

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

X1 End Cord End

Terminal

Wire Color Wire Type Label

X1.2 X2 White and

blue

Twisted pair SWITCH_INPUT0+

X1.3 X3 Blue GND

X1.6 X4 White and

orange

Twisted pair SWITCH_INPUT1+

X1.7 X5 Orange GND

X1.10 X6 White and

green

Twisted pair RS485_TX-

X1.11 X7 Green RS485_TX+

X1.13 X8 White and

brown

Twisted pair RS485_RX-

X1.14 X9 Brown RS485_RX+

Installation Position

The DB15 male connector is linked to the RS485/EXT_ALM port on the cabling cavity of the

RRU, and the other end of the cable is connected to the ports for Boolean alarm signals on the

external device.

2.4 SRXU Cables

The SRXU cables include the PGND cable, power cable, AISG multi-wire cable, AISG

extension cable, CPRI optical cable, and RF jumper.

2.4.1 PGND Cable of the SRXU

The PGND cable ensures the grounding of the SRXU.

2.4.2 Power Cable of the SRXU

The SRXU uses a shielded DC power cable. The cable feeds power from the RRU to the SRXU.

2.4.3 AISG Multi-Wire Cable of the RRU/SRXU

The five-meter-long AISG multi-wire cable connects the RRU/SRXU to the Remote Control

Unit (RCU). If both RRU and SRXU are installed, the AISG multi-wire cable only connects the

SRXU and the RCU. This cable is optional.

2.4.4 AISG Extension Cable of the RRU/SRXU

When the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-

wire cable is not long enough to cover the distance. In this case, the AISG extension cable is

used. The AISG extension cable is 15 m long.

2.4.5 CPRI Optical Cable

This describes the CPRI optical cable. It connects the BBU3836 to the RRU and transmits CPRI

signals between them.

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2.4.6 RF Jumper of the RRU/SRXU

The RF jumper of the RRU can be categorized into two types: feeder jumper and interconnect

jumper. The interconnect jumper is optional, depending on the site configuration.

2.4.1 PGND Cable of the SRXU

The PGND cable ensures the grounding of the SRXU.

Appearance

The green and yellow PGND cable is a single cable with a cross-sectional area of 16 mm2. Both

ends of the cable are OT terminals.

Figure 2-14 shows the PGND cable.

Figure 2-14 PGND cable

OT terminals need to be added on site. You can determine the color of the cable and whether to

use 2-hole terminals according to local standards.

Figure 2-15 shows the 2-hole terminal.

Figure 2-15 2-hole terminal

Installation Position

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

is connected to the grounding bolt on the RRU.

2.4.2 Power Cable of the SRXU

The SRXU uses a shielded DC power cable. The cable feeds power from the RRU to the SRXU.

Appearance

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

Figure 2-16 DC power cable

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Pin Assignment

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

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

X1 End X2 End Wire Color Wire Type Remarks

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

Cable

Blue

X1.7 X2.7 White and

orange

Twisted pair GND

Orange

Installation Position

One end of the DC power cable is connected to the RET/PWR_SRXU port at the bottom of the

RRU, and the other end is connected to the PWR_SRXU socket at the bottom of the SRXU.

2.4.3 AISG Multi-Wire Cable of the RRU/SRXU

The five-meter-long AISG multi-wire cable connects the RRU/SRXU to the Remote Control

Unit (RCU). If both RRU and SRXU are installed, the AISG multi-wire cable only connects the

SRXU and the RCU. This cable is optional.

Appearance

The cable has a waterproof DB9 connector at one end and a standard AISG female connector at

the other end, as shown in Figure 2-17.

Figure 2-17 AISG multi-wire cable

Pin Assignment

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

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

X1 End X2 End Wire Type Remarks

X1.1 X2.1 Twisted pair +12 V

X1.7 X2.7 Twisted pair DC-GND

X1.9 AISG_Switch

X1.3 X2.3 Twisted pair RS485 -

X1.5 X2.5 RS485 +

Installation Position

If only the RRU is installed, the waterproof DB9 connector is linked to the RET/PWR_SRXU

port at the bottom of the RRU, and the standard AISG female connector is linked to the

corresponding connector on the RCU or to the AISG extension cable.

If both the RRU and the SRXU are installed, the waterproof DB9 connector is linked to the RET

port at the bottom of the SRXU, and the standard AISG female connector is linked to the

corresponding connector on the RCU or to the AISG extension cable.

2.4.4 AISG Extension Cable of the RRU/SRXU

When the distance between the RCU and the RRU/SRXU is longer than 5 m, the AISG multi-

wire cable is not long enough to cover the distance. In this case, the AISG extension cable is

used. The AISG extension cable is 15 m long.

Appearance

The cable has a standard AISG male connector at one end and a standard AISG female connector

at the other end, as shown in Figure 2-18.

Figure 2-18 AISG extension cable

Pin Assignment

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

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

X1 End X2 End Wire Color Wire Type Remarks

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

Blue

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

Orange

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

X1.5 X2.5 Green RS485 A

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

Brown

Installation Position

The AISG female connector is linked to the corresponding connector on the RCU, and the AISG

male connector is linked to the AISG female connector of the AISG multi-wire cable.

2.4.5 CPRI Optical Cable

This describes the CPRI optical cable. It connects the BBU3836 to the RRU and transmits CPRI

signals between them.

Appearance

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

Figure 2-19 shows the CPRI optical cable.

Figure 2-19 CPRI optical cable

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

(3) Fiber tail

Pin Assignment

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

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

Label Color Connect to...

1A Orange RX port on the RRU

1B Gray TX port on the RRU

2A Orange TX port on the WBBPa

2B Gray RX port on the WBBPa

Installation Position

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

Table 2-17 Installation positions of the CPRI optical cable

One End The Other End

CPRI port on the WBBPa CPRI_W port on the RRU

2.4.6 RF Jumper of the RRU/SRXU

The RF jumper of the RRU can be categorized into two types: feeder jumper and interconnect

jumper. The interconnect jumper is optional, depending on the site configuration.

Antenna Jumper of the RRU/SRXU

The antenna jumper transmits and receives RF signals.

Appearance

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

Figure 2-20 Feeder jumper

Installation Position

The antenna jumper with indefinite length is selected according to the distance between the

antenna and the RRU/SRXU. Connectors are made on site.

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lWhen the distance between the antenna and the RRU/SRXU is shorter than 14 m, the RRU/

SRXU is directly connected to the antenna through the antenna jumper.

lWhen the distance between the antenna and the RRU/SRXU is longer than 14 m, the antenna

jumper should be shorter than 2 m. If you prepare the jumper by yourself, it is recommended

that the feeder jumper be 2 m long at most. Ensure that the antenna jumper is connected to

the feeder before being connected to the RRU/SRXU and the antenna.

Interconnect Jumper of the RRU/SRXU

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

Appearance

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

2-21.

Figure 2-21 Interconnect jumper

Installation Position

The 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeled

RX_IN/OUT on two RRUs or two SRXUs respectively.

RF Jumper Connections of the RRU

One end of the RF jumper is connected to the RF ports on the RRU and the other end to the

feeder. Which RF port to use depends on the networking modes.

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

Table 2-18 RF jumper connections of the RRU

Typical

Networking

Mode

Antenna Type and

Quantity of RRUs

Cable Connection

1 x 1 in no TX

diversity mode

lOne RRU

lOne dual polarization

antenna

lTwo antenna jumpers

lThe DIN connectors of the two feeder

jumpers link to the ANT_TX/RXA and

ANT_RXB ports at the bottom of the

RRU.

1 x 2 in no TX

diversity mode

2 x 1 in no TX

diversity mode

lTwo RRUs

lTwo dual polarization

antennas

lFour antenna jumpers

lThe DIN connectors of the four

antenna jumpers are linked to the

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Typical

Networking

Mode

Antenna Type and

Quantity of RRUs

Cable Connection

2 x 2 in no TX

diversity mode

ANT_TX/RXA ports and ANT_RXB

ports on RRU 0 and RRU 1.

1 x 1 in TX diversity

mode

lTwo RRUs

lOne dual polarization

antenna

lTwo feeder jumpers and one

interconnect jumper

lThe DIN connectors of the two feeder

jumpers are linked to the ANT_TX/

RXA ports on RRU 0 and RRU 1.

lThe interconnect jumper is connected

to the RX_IN/OUT ports on RRU 0 and

RRU 1 that are combined.

1 x 2 in TX diversity

mode

3 x 1 in no TX

diversity mode

lThree RRUs

lThree dual polarization

antennas

lSix antenna jumpers

lThe DIN connectors of the six antenna

jumpers are linked to the ANT_TX/

RXA ports and ANT_RXB ports on

RRU 0, RRU 1, and RRU 2.

3 x 2 in no TX

diversity mode

4-way RX diversity lOne RRU

lOne SRXU

lTwo antenna jumpers and one DC

power cable

lThe DIN connectors of the two antenna

jumpers are linked to the ANT_RXC

and ANT_RXD ports at the bottom of

the SRXU.

lOne end of the DC power cable is

connected to the RET/PWR_SRXU

port at the bottom of the RRU, and the

other end is connected to the

PWR_SRXU socket at the bottom of

the SRXU.

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3 Installing RRU and SRXU Hardware

About This Chapter

This describes how to install the hardware, route the cables, and check the hardware installation

of the RRU and SRXU.

3.1 Information About the Installation

This describes the installation modes and space requirements of the RRU and SRXU.

3.2 Procedure for Installing the RRU and SRXU

The procedure for installing the RRU and SRXU varies with the installation scenarios. The

procedure involves making preparations, installing the RRU and SRXU, connecting related

cables, checking the hardware installation, and installing the housing of the RRU and SRXU.

3.3 Preparing for the NodeB Installation

This describes how to prepare for the NodeB installation. Before installing the NodeB, you need

to unpack the NodeB and prepare necessary tools.

3.4 Installing the RRU on the Ground or Rooftop

When the RRU needs to be installed on the ground or rooftop, it supports one-module, two-

module centralized, and three-module centralized installation modes.

3.5 Installing the RRU on the Tower

Before installing the RRU on the tower, you need to assemble the parts and then lift them up to

the tower.

3.6 Installing the SRXU

This describes how to install the SRXU on the RRU in one-module, two-module centralized, or

three-module centralized installation mode.

3.7 Installing RRU and SRXU Cables

This describes how to install the cables of the RRU and SRXU and how to open and close the

cover plate of the RRU or SRXU cabling cavity.

3.8 Powering On the RRU/SRXU

This describes how to power on the RRU/SRXU. The RRU, supplied with -48 V DC power,

feeds power to the SRXU through a power cable. During power-on, you need to check the status

of the LEDs on the RRU/SRXU.

3.9 Installing the Housing of the RRU and SRXU

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

3.10 Checklists for Hardware Installation of Distributed NodeBs and Mini NodeBs

This describes the checklists for hardware installation and cable connections.

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3.1 Information About the Installation

This describes the installation modes and space requirements of the RRU and SRXU.

3.1.1 Installation Modes of the RRU and SRXU

The RRU supports one-module, two-module centralized, and three-module centralized

installation modes. It can be mounted on a metal pole or wall. If an SRXU is configured, the

SRXU must be fixed to the RRU.

3.1.2 Space Requirements of the RRU and SRXU

In different installation modes, the RRU and SRXU have the minimal space requirements for

cabling and OM. Based on the engineering practice, Huawei offers the recommended space

requirements.

3.1.3 Cabling Specifications for the NodeB

This describes the cabling specifications for the power cables and PGND cables. The power

cables and signal cables must be routed in compliance with the cabling specifications to avoid

electromagnetic interference to the signals.

3.1.4 Requirements for the RRU Cabling on a Tower

This describes the requirements for the RRU cabling on a tower. Routing RRU cables on a tower

should meet certain requirements to prevent damages to the cables or prevent interference to the

signals.

3.1.5 Connections of RRU and SRXU Cables

This describes the cable connections between the RRU, SRXU, and other devices such as

BBU3806, external power supply, and antenna system.

3.1.6 Labels for DBS3836 Cables

This presents the types, appearance, and installation of the labels for DBS3836 cables. The labels

are attached to the power cable of the BBU3836, power cable of the RRU, E1 cable, CPRI optical

cable, and alarm cable.

3.1.1 Installation Modes of the RRU and SRXU

The RRU supports one-module, two-module centralized, and three-module centralized

installation modes. It can be mounted on a metal pole or wall. If an SRXU is configured, the

SRXU must be fixed to the RRU.

NOTE

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

lThe depth of the metal ranges from 30 mm to 40 mm and the outer diameter of the pole ranges from

60 mm to 114 mm.

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

Installation Modes of One RRU

Figure 3-1 shows the installation modes of one RRU.

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Figure 3-1 Installation modes of one RRU

Installation Modes of One RRU and One SRXU

Figure 3-2 shows the installation modes of one RRU and one SRXU.

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

Installation Modes of Two RRUs

Figure 3-3 shows the installation modes of two RRUs.

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Figure 3-3 Installation modes of two RRUs

Installation Modes of Two RRUs and Two SRXUs

Figure 3-4 shows the installation modes of two RRUs and two SRXUs.

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

Installation Modes of Three RRUs

Figure 3-5 shows the installation modes of three RRUs.

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Figure 3-5 Installation modes of three RRUs

Installation Modes of Three RRUs and Three SRXUs

Figure 3-6 shows the installation modes of three RRUs and three SRXUs.

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

NOTE

The RRU can be also installed in an indoor centralized rack. For details about how to install the RRU in

the indoor centralized rack, refer to Indoor Centralized Installation Guide.

3.1.2 Space Requirements of the RRU and SRXU

In different installation modes, the RRU and SRXU have the minimal space requirements for

cabling and OM. Based on the engineering practice, Huawei offers the recommended space

requirements.

NOTE

The following figures related to the space requirements assume that the cabling cavities are on the left side

of the RRU and SRXU. If the RRU and SRXU are installed with the cabling cavities on the right, the

horizontal space requirements are opposite to what are shown in the figures.

Space Requirements of One RRU with and Without the SRXU

Figure 3-7 shows the recommended space requirements of one RRU with and without the

SRXU.

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

mm)

The recommended space around the equipment is as follows:

lAt least 500 mm under the equipment for cabling. It is recommended that the space is 1,200

mm between the bottom and the ground for easy maintenance.

lAt least 800 mm in front of the equipment for maintenance.

lAt least 200 mm above the equipment for maintenance.

lAt least 600 mm on the left of the equipment for maintenance.

lAt least 300 mm on the right of the equipment for maintenance.

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

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

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

The minimal space around the equipment is as follows:

l300 mm under the equipment for cabling. It is recommended that the space is 1,200 mm

between the equipment bottom and the ground for easy maintenance.

l600 mm in front of the equipment for maintenance.

l200 mm above the equipment for maintenance.

l400 mm on the left of the equipment for maintenance.

l100 mm on the right of the equipment for maintenance.

When two RRUs need to be combined, space requirements of each RRU must be met. In addition,

the space between the two RRUs should stay within the range shown in Figure 3-9.

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

The space between the two RRUs is as follows:

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

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

NOTE

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

Space Requirements of Multiple RRUs with and Without the SRXUs

Figure 3-10 shows the recommended space requirements of multiple RRUs with and without

the SRXUs.

Figure 3-10 Recommended space requirements of multiple RRUs with and without the SRXUs

(unit: mm)

The recommended space around the equipment is as follows:

lAt least 500 mm under the equipment for cabling. It is recommended that the space is 1,200

mm between the bottom and the ground for easy maintenance.

lAt least 800 mm in front of the equipment for maintenance.

lAt least 200 mm above the equipment for maintenance.

lAt least 800 mm on the left of the equipment for maintenance.

lAt least 800 mm on the right of the equipment for maintenance.

lRegardless of whether the SRXUs are fixed to the RRU, the space requirements are the

same.

lRegardless of whether the RRUs are in two-module or three-module centralized installation

mode, the space requirements are the same.

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

SRXUs.

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

mm)

The minimal space around the equipment is as follows:

l300 mm under the equipment for cabling. It is recommended that the space is 1,200 mm

between the equipment bottom and the ground for easy maintenance.

l600 mm in front of the equipment for maintenance.

l200 mm above the equipment for maintenance.

l600 mm on the left of the equipment for maintenance.

l600 mm on the right of the equipment for maintenance.

3.1.3 Cabling Specifications for the NodeB

This describes the cabling specifications for the power cables and PGND cables. The power

cables and signal cables must be routed in compliance with the cabling specifications to avoid

electromagnetic interference to the signals.

Requirements for Bending Radius of the Cables

Cable Requirements for the

Bending Radius

Feeder 1/2" feeder ≥ 127 mm

7/8" feeder ≥ 250 mm

5/4" feeder ≥ 380 mm

13/8" feeder ≥ 510 mm

Jumper 1/4" jumper ≥ 35 mm

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Cable Requirements for the

Bending Radius

1/2" jumper ≥ 50 mm

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

D ≥ 4.5 mm R ≥ 3D

Two-wire or multi-wire

cables with/without

shielding layers

6.5 mm ≤ D ≤ 12.5 mm R ≥ 2D

D ≥ 12.5 mm R ≥ 3D

Optical cable R ≥ 20D

NOTE

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

cable.

Requirements for Binding Cables

lCables of different types are bound separately. The cables cannot be coiled.

lThe cables are tightly and neatly bundled. Ensure that the jackets of the cables are not

damaged.

lTwo adjacent cable ties are spaced 200 mm and face the same direction. The cable ties at

the same position are placed at the same level. All cuts of the cable ties are smooth without

sharp projections.

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

General Cabling Specifications

lCables of different types are routed separately.

lCables of different types are not crossed.

lThe space between cables of different types are greater than 30 mm when the cables are

routed parallel inside the cabinet. The space between cables of different types are greater

than 100 mm when the cables are routed parallel outside the cabinet. If such requirements

cannot be met, If such requirements cannot be met, the cables must be separated with

specified objects.

Cabling Specifications for Power Cables and PGND Cables

lThe optical cables are routed in compliance with the engineering design and general cabling

specifications.

lIf the cable is not long enough, replace the cable. Do not add connectors or solder joints to

lengthen the cable.

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

lFuses or switches are not allowed on the cables.

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

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lBoth ends of the PGND cables are anti-corrosive and antirust. Connections of the PGND

cables are secure.

lThe low-voltage AC power cable for the NodeB is covered with a metallic conduit and

buried in the ground for at least 50 m before they are led into the equipment room. Note

that if such cables are shorter than 50 m, they must be completely buried in the ground. If

such cables are routed overhead and led into the room, surge protection for the connectors

of the AC power cables are affected.

lThe PGND cables are buried in the ground or routed indoors. The PGND cables cannot be

routed overhead before they are led into the equipment room.

Cabling Specifications for E1/T1 Cables

lThe optical cables are routed in compliance with the engineering design and general cabling

specifications.

lThe E1/T1 cables cannot be routed overhead outdoors.

lIf the E1/T1 cables are routed outdoors, coat the E1/T1 cables with PVC jackets and route

them underground based on the site conditions.

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

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

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

Cabling Specifications for Optical Cables

lThe optical cables are routed in compliance with the engineering design and general cabling

specifications.

lReserve proper cable surpluses where the optical cables are curved.

lDo not stretch, step, or place heavy objects on the optical cables. Keep the cables away

from sharp objects to avoid damage. The optical cable that is curved or pressed or the optical

connector which is damaged cannot be used.

lExtra optical cables are coiled on the specific device such as the fiber coiler. Coil extra

optical cables properly. Do not bend the cables forcibly to avoid damaging the cables.

lUse protection tubes to coat the bare fibers.

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

lIf one end of the optical cable is connected to an optical device, do not look directly at the

end face of the optical connector. Otherwise, you may damage your eyes.

lFill soft materials such as fireproof cottons in the optical cable inlets at the top of the cabinet

to protect the optical cables.

lYou need to check whether the optical connectors are clean before installation. If the optical

connectors are dirty, clean them by using the dustfree cloth or fiber cleaner.

3.1.4 Requirements for the RRU Cabling on a Tower

This describes the requirements for the RRU cabling on a tower. Routing RRU cables on a tower

should meet certain requirements to prevent damages to the cables or prevent interference to the

signals.

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Scenario of RRU Cabling on a Tower

In RRU installation scenarios, if you choose to install the RRU on the mast of a tower, you need

to route the RRU cables on the tower. Figure 3-12 shows the installation scenario.

Figure 3-12 Scenario of RRU cabling on a tower

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

lCPRI optical cable between the BBU and the RRU.

lRRU power cable.

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

Cabinet

Routing RRU cables through the cable hole at the bottom of the cabinet should meet the following

requirements:

lIf you route the cable through the cable hole at the bottom of the cabinet, coat the cable

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

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Figure 3-13 PVC protection tube

lIf you route the cable coated with the protection tube on the ground or in the cable trough,

do not step on or crush the cable.

Requirements for Routing Cables in the Cable Rack

Routing RRU cables in the cable rack should meet the following requirements:

lUse the cable clip to fasten the cables.

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

lThe cables should be put in order according to the routing direction, and then should be

fastened using the cable clips.

lDetermine the installation points of the clips according to the field requirements. Usually

the distance between two clips should be less than or equal to 1.5 m. Install the clips with

even spacing and in the same direction.

lThe clip should be vertical to the cables and should not be bent. The cables fastened by the

same clip should be parallel, as shown in Figure 3-14.

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Figure 3-14 Installing the cable clip

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

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

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Figure 3-15 Routing the cables in the cable rack

Requirements for Routing Cables on the Tower

Routing RRU cables on the tower should meet the following requirements:

lUse the cable clip to fasten the cables.

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

lArrange the cables in order from top down to ensure that the cables are not twisted or tangled

with other cables. Then use clips to fasten the cables.

lDetermine the installation points of the clips according to the field requirements. Usually

the distance between two clips should be less than or equal to 1.5 m. Install the clips with

even spacing and in the same direction.

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lThe clip should be vertical to the cables and should not be bent. The cables fastened by the

same clip should be parallel, as shown in Figure 3-16.

lFigure 3-16 Installing the cable clip on the tower

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

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

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Figure 3-17 Routing the cables in the cable rack

3.1.5 Connections of RRU and SRXU Cables

This describes the cable connections between the RRU, SRXU, and other devices such as

BBU3806, external power supply, and antenna system.

Cable Connections of One RRU with and Without the SRXU

Figure 3-18 and Figure 3-19 show the cable connections of one RRU with and without the

SRXU.

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

NOTE

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

lThe AISG multi-wire cable connects the RRU to the RCU. When the distance between the RRU and

the RCU is too long, the AISG extension cable is used between the AISG multi-wire cable and the

RCU.

lThe antenna jumper directly connects the RRU to the antenna. When the distance between the RRU

and the antenna is longer than 14 m, the feeder is required.

3 Installing RRU and SRXU Hardware

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

NOTE

Interconnect jumper is used to implement the interconnection between combined RRUs or between

combined SRXUs. The interconnection between the RRU and the SRXU, however, cannot be implemented.

Cable Connections of Multiple RRUs with and Without the SRXUs

Figure 3-20 and Figure 3-21 show the cable connections of multiple RRUs with and without

the SRXUs.

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

NOTE

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

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

NOTE

Interconnect jumper is used to implement the interconnection between combined RRUs or between

combined SRXUs. The interconnection between the RRU and the SRXU, however, cannot be implemented.

3 Installing RRU and SRXU Hardware

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3.1.6 Labels for DBS3836 Cables

This presents the types, appearance, and installation of the labels for DBS3836 cables. The labels

are attached to the power cable of the BBU3836, power cable of the RRU, E1 cable, CPRI optical

cable, and alarm cable.

Labels for the Cables

lLabel for the BBU power cable

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

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

Same labels are attached to both ends of the power cable. X ranges from 0 to 3, indicating

BBU0 through BBU3, as shown in Figure 3-22.

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

lLabel for the RRU power cable

Quantity of delivered labels: quantity of RRU power cables x 2

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

Same labels are attached to both ends of the power cable. X ranges from 0 to 5, indicating

RRU0 through RRU5, as shown in Figure 3-23.

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

lLabel for the E1 cable

Quantity of delivered labels: quantity of E1 cables x 2

Installation positions of the labels: 3 cm away from each end of the E1 cable

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Same labels are attached to both ends of the E1 cable. X ranges from 0 to 3, indicating Iub0

through Iub3, as shown in Figure 3-24.

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

lLabel for the CPRI optical cable

Quantity of delivered labels: quantity of CPRI optical cables x 2

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

Same labels are attached to both ends of the CPRI optical cable. X ranges from 0 to 5,

indicating the optical ports on the BBU and RRU, as shown in Figure 3-25.

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

lLabel for the alarm cable

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

Installation positions of the labels: near the cable hole where the RRU alarm cable is routed

out of the cabling cavity

A label is attached near the cable hole where the RRU alarm cable is routed out of the

cabling cavity. X ranges from 0 to 5, indicating RRU0 through RRU5, as shown in Figure

3-26.

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

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

Installation positions of the labels: near the cable hole where the BBU alarm cable is routed

out of the cabling cavity

A label is attached near the cable hole where the BBU alarm cable is routed out of the

cabling cavity. X ranges from 0 to 5, indicating BBU0 through BBU5, as shown in Figure

3-27.

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

Attaching a Label to a Cable

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

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

Figure 3-28 Leading cable ties through the holes

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

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

tie.

Figure 3-29 Binding the label to the cable

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

NOTE

Ensure that the labels are arranged in an orderly and neat manner and the cable ties are installed in

the same direction. An extra length ranging from 3 mm to 5 mm should be left for each cable tie.

3.2 Procedure for Installing the RRU and SRXU

The procedure for installing the RRU and SRXU varies with the installation scenarios. The

procedure involves making preparations, installing the RRU and SRXU, connecting related

cables, checking the hardware installation, and installing the housing of the RRU and SRXU.

Context

CAUTION

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

NOTE

Contact Huawei engineers for confirmation if:

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

lYou need to shorten the cable of a specified length.

Procedure

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

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

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l3.4 Installing the RRU on the Ground or Rooftop

If... Then...

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

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

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

l3.5 Installing the RRU on the Tower

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

If... Then...

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

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

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

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

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

Hardware Installation.

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

the RRU and SRXU.

----End

3.3 Preparing for the NodeB Installation

This describes how to prepare for the NodeB installation. Before installing the NodeB, you need

to unpack the NodeB and prepare necessary tools.

3.3.1 Unpacking Inspection for the NodeB

This describes how to unpack the NodeB and check the integrity of the equipment. This is a

prerequisite for the successful installation.

3.3.2 Tools and Instruments for NodeB Installation

This describes the general tools, special tools, and instruments required for the NodeB

installation.

3.3.1 Unpacking Inspection for the NodeB

This describes how to unpack the NodeB and check the integrity of the equipment. This is a

prerequisite for the successful installation.

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Context

CAUTION

When transporting, moving or installing the equipment, components, or parts, you must:

lAvoid collision with doors, walls, shelves, and other objects.

lAvoid touching the uncoated metal surface of the equipment, components, or parts with sweat

soaked or dirty gloves.

Procedure

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

packing list.

If… Then…

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

The quantity does not match with the

packing list,

Find out the cause and contact the local

Huawei office.

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

If… Then…

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

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

office.

Step 3 Open the packing case. Check the shipped components according to the Packing List, and then

perform the next step according to the checking result.

If… Then…

The shipped components match with the packing

list,

Sign the packing list with the customer.

There is any short shipment, wrong shipment, or

damage to the goods,

Fill in the Cargo Problems Report.

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CAUTION

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

lStore the unpacked equipment and packing materials indoors.

lTake photos of the storage environment, rusted or corroded devices, and packing cases and

materials, and then file the photos.

----End

3.3.2 Tools and Instruments for NodeB Installation

This describes the general tools, special tools, and instruments required for the NodeB

installation.

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

Table 3-1 Tools and instruments

General tools Measuring

tools

Long tape, 50 mm ribbon tape, 5 m measuring tape, 400

mm level bar, and level instrument

Marking

tools

Marking pen and pencil

Drilling tools Percussion drill (with the Ф6, Ф8, Ф10, Ф12, Ф14, and

Ф16 bits) and vacuum cleaner

Clamping

tools

Straight screwdrivers (M3-M6)

Cross screwdrivers (M3-M6)

Adjustable wrench

Socket wrenches (M6, M8, M12, M14, M17, and M19)

Double offset ring wrenches (M6, M8, M12, M14, M17,

and M19)

Combination wrench M17 and M19

Long-arm wrench

Pliers Sharp-nose pliers, diagonal pliers, pincer pliers, hand-

held electric drill, file, handsaw, crowbar, rubber

hammer, and claw hammer

Auxiliary

tools

Brush, tweezers, paper knife, bellows, plumb, soldering

iron, solder wires, fork, ladder, heat blower, solder

absorber, insulating tape, and USB memory

Special tools Earth resistance tester, ESD wrist strap, a pair of ESD gloves, wire

stripper, a clamping pincers, feeder cutter, a pair of crimping pliers for

SMB, RJ-45 connector crimping pliers, wire punchdown tool, wire cutter,

non-conductive screwdriver, safety knife, stripper for 75-ohm coaxial

cables, a pair of connector crimping pliers for 75-ohm coaxial cables, and

a pair of multi-purpose crimping pliers

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Instruments Multimeter, 500 V megohmmeter (for testing insulation resistance), BER

tester, and optical power meter

NOTE

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

3.4 Installing the RRU on the Ground or Rooftop

When the RRU needs to be installed on the ground or rooftop, it supports one-module, two-

module centralized, and three-module centralized installation modes.

3.4.1 Installing a Single RRU

This describes how to install a single RRU module and its mounting plate. The single RRU can

be installed on a metal pole or wall.

3.4.1 Installing a Single RRU

This describes how to install a single RRU module and its mounting plate. The single RRU can

be installed on a metal pole or wall.

Procedure

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

If... Then...

The RRU needs to be installed on a metal

pole,

Go to 3.4.1.1 Installing the Mounting Plates

of the Single RRU on the Metal Pole.

The RRU needs to be installed on a wall, Go to 3.4.1.2 Installing the Mounting Plate

of the Single RRU on the Wall.

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

----End

Installing the Mounting Plates of the Single RRU on the Metal Pole

This describes how to install the mounting plates on the metal pole.

Prerequisite

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

Procedure

Step 1 Determine the position of the mounting plate by referring to the engineering design and 3.1.2

Space Requirements of the RRU and SRXU.

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NOTE

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

Step 2 Mount the upper fixture assembly on the metal pole. Ensure that the four ends of the fixture

assembly are on the same plane, as shown in Figure 3-30.

Figure 3-30 Mounting the upper fixture assembly

NOTE

Two pairs of holes can be used for mounting the fixture assembly, as shown in Figure 3-31. If the 60-95

mm bolts are used, use pair 1. If the 90-114 mm bolts are used, use pair 2.

Figure 3-31 Holes in the fixture assembly

Step 3 Use the level bar to check whether the four ends of the fixture assembly are on the same plane.

Use the tape measure to check whether the two pole fixtures are parallel.

NOTE

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

not parallel.

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Figure 3-32 Measuring L1 and L2

If... Then...

The pole fixtures are neither horizontal nor

parallel,

Go to Step 2 to adjust the fixture assembly.

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

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

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

Step 5 Use three screws M6 x 20 to secure the multi-purpose attachment plate to the mounting plate,

as shown in Figure 3-34.

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

Step 6 Install the third pole fixture on the mounting plate at the lower part of its back by tightening two

bolts M10 x 40, as shown in Figure 3-35.

Figure 3-35 Installing the third pole fixture

Step 7 Install the mounting plate by fitting the tabs on the mounting plate into the anchor slots in the

pole fixture, as shown in Figure 3-36.

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Figure 3-36 Installing the mounting plate

Step 8 Mount the fourth pole fixture to the metal pole by tightening two bolts M10 x 110 between the

third and the fourth pole fixtures, as shown in Figure 3-37.

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Figure 3-37 Mounting the lower fixture assembly

NOTE

Two pairs of holes can be used for mounting the fixture assembly, as shown in Figure 3-31. If the 60-95

mm bolts are used, use pair 1. If the 90-114 mm bolts are used, use pair 2.

----End

Installing the Mounting Plate of the Single RRU on the Wall

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

Procedure

Step 1 Determine the position of the mounting plate.

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

3.1.2 Space Requirements of the RRU and SRXU. Figure 3-38 shows the installed

expansion bolt assemblies and the RRU.

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Figure 3-38 Installed expansion bolt assemblies and the RRU

NOTE

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

2. Place the mounting plate against the wall, and then use the marking pen to mark the four

anchor points. You can also mark four points according to the inter-hole distance, as shown

in Figure 3-39.

Figure 3-39 Determining the anchor points

Step 2 Drill a hole at each anchor point and install the expansion bolt assembly, as shown in Figure

3-40.

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

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

CAUTION

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

inhale the dust.

NOTE

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

2. After the holes are drilled, use the cleaner to clean the dust both inside and around the holes.

If the inter-hole distance is too long or too short, locate and drill holes again.

3. Screw the expansion bolt slightly and put it into the hole. Hammer the assembly until the

expansion tube is completely buried into the hole.

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

CAUTION

After disassembling the expansion bolt assembly, ensure that the top of the expansion tube

is completely buried into the wall. If it is not completely buried, the mounting plate cannot

be steady on the wall.

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

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Figure 3-41 Securing the mounting plate

1. Place the mounting plate against the wall, and then align the mounting plate with the four

marked anchor points.

2. Lead each bolt M10 x 75 through the spring washer 10, flat washer 10, and insulating

washer in turn. Then, lead each assembled bolt through the hole in the mounting plate,

insulating block, and finally into the expansion tube through the hole in the wall.

CAUTION

When installing the bolt, remove the filling tube, and then use the insulating washer and

insulating block that are delivered with the mounting plate, as shown in Figure 3-42.

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

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

----End

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Installing the Single RRU Module

This describes how to install the RRU module on a metal pole. Regardless of whether the

mounting plate is installed on a metal pole or on a wall, the procedures for installing the module

are the same.

Prerequisite

lThe RRU mounting plate is installed.

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

Context

The RRU module can be installed in either ordinary mode or reverse mode. In reverse mode,

the front of the RRU is fixed to the mounting plate. Figure 3-43 shows two RRUs with one in

ordinary mode and the other in reverse mode.

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

NOTE

lBefore delivery, the plastic housing of the RRU is already fixed to the module. The previous figure

omits the plastic housing for a better illustration of ordinary and reverse modes.

lBefore delivery, the plastic housing of the RRU is fixed in the assumption that the RRU needs to be

installed in ordinary mode. If you want to install the RRU in reverse mode, remove the plastic housing

first. For detailed procedure, refer to 3.4.2.3 Installing the Two RRU Modules.

Procedure

Step 1 Use two screws M6 x 20 to secure the attachment plate to the module, as shown in Figure

3-44.

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Figure 3-44 Securing the attachment plate

CAUTION

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

lIf you find that the plastic housing is put face down when unpacking the RRU, install the

attachment plate before taking out the RRU.

lIf you find that the plastic housing is put face up, lay cardboards or packing bags on the

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

Step 2 Fit the tabs on the attachment plate into the anchor slots of the mounting plate, as shown in

Figure 3-45.

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Figure 3-45 Installing the module

CAUTION

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

plate.

Step 3 Lead two screws M6 x 20 through the holes in the bottom of the module. Then, secure the module

to the mounting plate, as shown in Figure 3-46.

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Figure 3-46 Securing the module

----End

3.4.2 Install Two RRUs

This describes how to install two RRU modules and their mounting plates. The two RRUs can

be installed on a metal pole or wall.

Procedure

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

If... Then...

The RRU needs to be installed on a metal

pole,

Go to 3.4.2.1 Installing the Mounting Plates

of the Two RRUs on the Metal Pole.

The RRU needs to be installed on a wall, Go to 3.4.2.2 Installing the Mounting Plates

of the Two RRUs on the Wall.

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

----End

3.4.2.1 Installing the Mounting Plates of the Two RRUs on the Metal Pole

This describes how to install the mounting plates on the metal pole.

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Huawei Technologies RRU3804B2 Distributed NodeB Remote Radio Unit User Manual User Guide

Huawei Technologies Co.,Ltd Distributed NodeB Remote Radio Unit User Guide

User Manual

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