Huawei RRU3942-1900M, RRU3942-850 User Manual

RRU3942&RRU3642

Installation Guide

Issue 07

Date 2013-12-30

HUAWEI TECHNOLOGIES CO., LTD.

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

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

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

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

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

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

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

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About This Document

Purpose

This document describes the process of installing DC RRU3942 and RRU3642 (referred to as

RRU in this document).

Product Version

The following table lists the product version related to this document for RRU3942.

Product Name Product Version

DBS3900 V100R004C00 and later versions

DBS3900 GSM V100R013C00 and later versions

DBS3900 WCDMA V200R013C00 and later versions

DBS3900 LTE V100R005C00 and later versions

The following table lists the product version related to this document for RRU3642.

Product Name Product Version

DBS3900 V100R008C00 and later versions

DBS3900 LTE V100R006C00 and later versions

Intended Audience

This document is intended for:

Base station installation engineers

Organization

1 Changes in the RRU3942&RRU3642 Installation Guide

RRU3942&RRU3642

Installation Guide

About This Document

Issue 07 (2013-12-30) Huawei Proprietary and Confidential

This chapter describes the changes in the RRU3942&RRU3642 Installation Guide.

2 Installation Preparations

This chapter describes the reference documents, tools, and instruments that must be ready before

the installation. In addition, it specifies the skills and prerequisites that installation engineers

must have.

3 Information About the Installation

Before installing an RRU, you must be familiar with its exterior, ports, indicators, installation

options and installation clearance requirements.

4 Unpacking the Equipment

This chapter describes how to unpack and check the delivered equipment to ensure that all the

materials are included and intact.

5 Installation Process

The installation process involves installing an RRU and RRU cables, checking the RRU

hardware installation, and powering on the RRU.

6 Hoisting an RRU and Related Cables onto a Tower

This section describes the procedure for hoisting an RRU and related cables onto a tower and

the precautions that must be taken.

7 Installing the RRU

This chapter describes the procedure for installing the RRU. The procedure for installing the

RRU varies depending on installation options.

8 Installing RRU Cables

This chapter describes the procedure for installing RRU cables.

9 Checking the RRU Hardware Installation

After an RRU is installed, check the hardware installation.

10 Powering On an RRU

After all the devices are installed, check the power-on status of an RRU.

11 Appendix

This section describes the procedure for adding an easy power receptacle (pressfit type)

connector.

Conventions

Symbol Conventions

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

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Symbol Description

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in equipment damage, data loss,

performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal

injury.

Calls attention to important information, best practices and

tips.

NOTE is used to address information not related to personal

injury, equipment damage, and environment deterioration.

General Conventions

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

Convention 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

Examples of information displayed on the screen are in

Courier New.

Command Conventions

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

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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Installation Guide About This Document

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Convention Description

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

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

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }

Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]

Optional items are grouped in brackets and separated by

vertical bars. Several items or no item can be selected.

GUI Conventions

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

Convention 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.

Keyboard Operations

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

Format Description

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

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

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

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Action Description

Click Select and release the primary mouse button without 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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Installation Guide About This Document

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

1 Changes in the RRU3942&RRU3642 Installation Guide.......................................................1

2 Installation Preparations..............................................................................................................5

2.1 Reference Documents.....................................................................................................................................................6

2.2 Tools and Instruments....................................................................................................................................................6

2.3 Skills and Requirements for Onsite Personnel...............................................................................................................8

3 Information About the Installation...........................................................................................9

3.1 RRU Exterior................................................................................................................................................................10

3.2 RRU Ports.....................................................................................................................................................................10

3.3 RRU Indicators.............................................................................................................................................................18

3.4 Installation Scenarios....................................................................................................................................................20

3.5 Installation Clearance Requirements of an RRU..........................................................................................................28

3.5.1 Clearance for a Single RRU......................................................................................................................................28

3.5.2 Clearances for Three or More RRUs.........................................................................................................................30

3.5.3 Installation Spacing Between RRUs..........................................................................................................................34

4 Unpacking the Equipment.........................................................................................................37

5 Installation Process.....................................................................................................................39

6 Hoisting an RRU and Related Cables onto a Tower............................................................40

6.1 Hoisting an RRU onto a Tower....................................................................................................................................41

6.2 Hoisting Fiber Optic Cables onto a Tower...................................................................................................................45

6.3 Hoisting Power Cables onto a Tower...........................................................................................................................47

7 Installing the RRU.......................................................................................................................50

7.1 Mounting Kits for an RRU...........................................................................................................................................51

7.2 Installing the RRU on a Pole........................................................................................................................................51

7.2.1 Installing a Single RRU.............................................................................................................................................52

7.2.2 Installing Two RRUs.................................................................................................................................................55

7.2.3 Installing Three or More RRUs.................................................................................................................................60

7.3 Installing the RRU on U-steel......................................................................................................................................64

7.4 Installing the RRU on Angle Steel...............................................................................................................................68

7.5 Installing the RRU on a Wall.......................................................................................................................................72

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7.6 Installing an RRU on an IFS06.....................................................................................................................................76

8 Installing RRU Cables................................................................................................................82

8.1 Cabling Requirements..................................................................................................................................................84

8.2 Cable Connections........................................................................................................................................................90

8.3 Installation Process.......................................................................................................................................................94

8.4 RRU Cable List............................................................................................................................................................95

8.5 Installing an RRU PGND Cable...................................................................................................................................97

8.6 Installing an RRU RF Jumper......................................................................................................................................98

8.7 Installing an Inter-RRU RF Cable..............................................................................................................................102

8.8 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable...................................................................103

8.9 Opening the Cover Plate of an RRU Cabling Cavity.................................................................................................105

8.10 Installing an RRU Power Cable................................................................................................................................107

8.11 Installing a CPRI Fiber Optic Cable.........................................................................................................................109

8.12 Installing an RRU Alarm Cable................................................................................................................................111

8.13 Closing the Cover Plate of an RRU Cabling Cavity................................................................................................111

9 Checking the RRU Hardware Installation............................................................................114

10 Powering On an RRU.............................................................................................................115

11 Appendix...................................................................................................................................117

11.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side......................118

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Installation Guide Contents

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1 Changes in the RRU3942&RRU3642

Installation Guide

This chapter describes the changes in the RRU3942&RRU3642 Installation Guide.

07 (2013-12-30)

This is the seventh official release.

Compared with issue 06 (2013-12-23), this issue includes the following change:

Topic Change Description

3.4 Installation Scenarios Modified the figure showing the U-steel

specifications.

Compared with issue 06 (2013-12-23), this issue does not include any new information and no

information is deleted from this issue.

06 (2013-12-23)

This is the sixth official release.

Compared with issue 05 (2013-06-26), this issue includes the following change:

Topic Change Description

6.1 Hoisting an RRU onto a Tower Optimized the procedure for hoisting an RRU

onto a Tower.

Compared with issue 05 (2013-06-26), this issue does not include any new information and no

information is deleted from this issue.

RRU3942&RRU3642

Installation Guide

1 Changes in the RRU3942&RRU3642 Installation Guide

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05 (2013-06-26)

This is the fifth official release.

Compared with issue 04 (2013-04-28), this issue includes the following change:

Topic Change Description

8.10 Installing an RRU Power Cable Added the power device DCDU-12B for the

RRU.

Compared with issue 04 (2013-04-28), this issue does not include any new information and no

information is deleted from this issue.

04 (2013-04-28)

This is the fourth official release.

Compared with issue 03 (2013-01-14), this issue includes the following new information:

l 7.6 Installing an RRU on an IFS06

Compared with issue 03 (2013-01-14), this issue includes the following change:

Topic Change Description

The whole document Modified the figures showing the mounting kits for

an RRU, which have been modified.

About This Document Changed the document name from RRU3942

Installation Guide to RRU3942&RRU3642

Installation Guide.

2.2 Tools and Instruments Modified the specifications of the hammer drill and

wrench.

3.4 Installation Scenarios Modified the installation scenarios of the RRU.

4 Unpacking the Equipment Added requirements for checking the insulation layer

of RRU cables.

7 Installing the RRU Changed the procedures for installing the RRU in

different scenarios because RRU mounting kits and

attachment plates are redesigned.

8.1 Cabling Requirements Added requirements for routes of RRU cables.

Compared with issue 03 (2013-01-14), no information is deleted from this issue.

03 (2013-01-14)

This is the third official release.

RRU3942&RRU3642

Installation Guide

1 Changes in the RRU3942&RRU3642 Installation Guide

Issue 07 (2013-12-30) Huawei Proprietary and Confidential

Compared with issue 02 (2012-09-15), this issue does not include any new information.

Compared with issue 02 (2012-09-15), this issue includes the following change:

Topic Change Description

8.10 Installing an RRU Power Cable Added the attention for installing the RRU

power cable.

Compared with issue 02 (2012-09-15), no information is deleted from this issue.

02 (2012-09-15)

This is the second official release.

Compared with issue 01 (2012-04-25), this issue does not include any new information.

Compared with issue 01 (2012-04-25), this issue includes the following change:

Topic Change Description

8.6 Installing an RRU RF Jumper Optimized the procedure for waterproofing

the connectors on an RRU RF jumper and the

dustproof caps.

6.2 Hoisting Fiber Optic Cables onto a

Tower

Optimized the procedure for hoisting.

6.3 Hoisting Power Cables onto a Tower

Compared with issue 01 (2012-04-25), no information is deleted from this issue.

01 (2012-04-25)

This is the first official release.

Compared with draft B (2012-04-16), this issue does not include any modification.

Draft B (2012-04-16)

This is the draft.

Compared with issue draft A (2012-01-10), this issue does not include any new information.

Compared with issue draft A (2012-01-10), this issue includes the following change:

Topic Change Description

3.4 Installation Scenarios Optimized the contents in this document.

Compared with issue draft A (2012-01-10), no information is deleted from this issue.

RRU3942&RRU3642

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1 Changes in the RRU3942&RRU3642 Installation Guide

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Draft A (2012-01-10)

This is a draft.

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2 Installation Preparations

About This Chapter

This chapter describes the reference documents, tools, and instruments that must be ready before

the installation. In addition, it specifies the skills and prerequisites that installation engineers

must have.

2.1 Reference Documents

Before the installation, you must be familiar with reference documents.

2.2 Tools and Instruments

You must prepare the following tools and instruments before the installation.

2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite

personnel must be familiar with correct operation methods and safety precautions.

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2.1 Reference Documents

Before the installation, you must be familiar with reference documents.

The following reference documents are required during RRU installation:

l RRU3942&RRU3642 Hardware Description

l DBS3900 Installation Guide

l OCB User Guide

l OCB-01M User Guide

2.2 Tools and Instruments

You must prepare the following tools and instruments before the installation.

Hammer drill (a φ12 bit)

ESD gloves Vacuum cleaner

Heat gun Phillips screwdriver (M3 to

M6)

Flat-head screwdriver (M3 to

M6)

Rubber mallet COAX crimping tool Wire stripper

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Utility knife Cable cutter

Adjustable wrench (size ≥ 32

mm [1.26 in.])

Torque wrench

Size: 16 mm (0.63 in.) and 32

mm (1.26 in.)

Combination wrench

Size: 16 mm (0.63 in.) and 32

mm (1.26 in.)

Level

Torque screwdriver

5 mm

(M3 to M6)

Torque socket

Multimeter

Marker (diameter ≤ 10 mm

[0.39 in.])

Measuring tape

Inner hexagon wrench Fixed pulley Lifting sling

Hydraulic pliers - -

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2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite

personnel must be familiar with correct operation methods and safety precautions.

Before the installation, pay attention to the following items:

l The customer's technical engineers must be trained by Huawei and be familiar with the

proper installation and operation methods.

l The number of onsite personnel depends on the engineering schedule and installation

environment. Generally, only three to five onsite personnel are necessary.

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3 Information About the Installation

About This Chapter

Before installing an RRU, you must be familiar with its exterior, ports, indicators, installation

options and installation clearance requirements.

3.1 RRU Exterior

This section describes the exterior and dimensions of an RRU.

3.2 RRU Ports

This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity

panel, and indicator panel.

3.3 RRU Indicators

This section describes six indicators on an RRU. They indicate the running status.

3.4 Installation Scenarios

An RRU can be installed on a pole, U-steel, angle steel, wall, or IFS06. Installation scenarios

must meet heat-dissipation and waterproofing requirements of the RRU.

3.5 Installation Clearance Requirements of an RRU

This section describes the requirements for the installation clearance of a single RRU and

multiple RRUs and the requirements for the installation spacing between RRUs.

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3.1 RRU Exterior

This section describes the exterior and dimensions of an RRU.

Figure 3-1 shows an RRU.

Figure 3-1 RRU exterior

Figure 3-2 shows RRU dimensions.

Figure 3-2 RRU dimensions

3.2 RRU Ports

This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity

panel, and indicator panel.

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Figure 3-3 shows the ports on the RRU panels.

Figure 3-3 Ports on the RRU panels

Table 3-1 describes ports and indicators on the RRU panels.

Table 3-1 Ports and indicators on the RRU panels

Item Silkscreen Description

(1) Ports at the bottom ANT_TX/RXA TX/RX port A, supporting RET signal

transmission

ANT_RXC RX port C

ANT_RXD Port RX port D

ANT_TX/RXB TX/RX port B

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Item Silkscreen Description

RX_IN/OUT Interconnection port

RET Communication port for the RET antenna,

supporting RET signal transmission

(2) Ports in the cabling

cavity

RTN(+) Power supply socket

NEG(-)

CPRI0 Optical/electrical port 0

CPRI1 Optical/electrical port 1

EXT_ALM Alarm monitoring port used for monitoring

one RS485 signal and two dry contact signals

(3) Indicators RUN See 3.3 RRU Indicators.

ALM

ACT

VSWR

CPRI0/IR0

CPRI1/IR1

NOTE

l The port for transmitting RET signals is determined by the software.

l For the RRU3942, both CPRI0 and CPRI1 can be conected to the BBU. Use the CPRI0 by default in

the single-mode scenario.

l For the RRU3642, CPRI0 is connected to the BBU and the CPRI1 is reserved. The RX_IN/OUT is not

used.

Table 3-2 describes how to use RF ports for RRU3942.

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Table 3-2 Usage of RF ports for RRU3942

Product Version TX/RX

Channe

Number

of Used

RF Ports

Usage Remarks

l DBS3900

V100R004C00

l DBS3900 GSM

V100R013C00

l DBS3900 GSM

V300R013C00

l DBS3900

WCDMA

V200R013C00

1 x 2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

l DBS3900 GSM

V100R014C00

and later versions

l DBS3900 GSM

V300R014C00

and later versions

1 x 1T2R 2 It is recommended that

ANT_TX/RXA and

ANT_RXC be used

together.

You can also use ANT_TX/

RXB and ANT_RXD

together.

A single

sector

1 x 2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

2 x 1T2R 4 ANT_TX/RXA and

ANT_RXC are used for one

sector; ANT_TX/RXB and

ANT_RXD are used for the

other sector.

Two sectors

l DBS3900

V100R007C00

and later versions

l DBS3900

WCDMA

V200R014C00

and later versions

l DBS3900 LTE

V100R005C00

and later versions

1 x 1T2R 2 It is recommended that

ANT_TX/RXA and

ANT_RXC be used

together.

You can also use ANT_TX/

RXB and ANT_RXD

together.

A single

sector

1 x 2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

2 x 1T2R 4 ANT_TX/RXA and

ANT_RXC are used for one

sector; ANT_TX/RXB and

ANT_RXD are used for the

other sector.

Two sectors

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Product Version TX/RX

Channe

Number

of Used

RF Ports

Usage Remarks

1 x 2T4R 4 ANT_TX/RXA, ANT_TX/

RXB, ANT_RXC, and

ANT_RXD are used

together for one sector, with

ANT_TX/RXA and

ANT_RXC combined and

ANT_TX/RXB and

ANT_RXD combined.

A single

sector

Figure 3-4 shows the recommended usage of RF ports on an RRU3942 used for DBS3900

V100R004C00, DBS3900 GSM V100R013C00, DBS3900 GSM V300R013C00, or DBS3900

WCDMA V200R013C00.

Figure 3-4 Recommended usage of RF ports on an RRU3942 used for DBS3900 V100R004C00,

DBS3900 GSM V100R013C00, DBS3900 GSM V300R013C00, or DBS3900 WCDMA

V200R013C00

Figure 3-5 shows the recommended usage of RF ports on an RRU3942 used for DBS3900 GSM

V100R014C00 and later versions or DBS3900 GSM V300R014C00 and later versions.

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Figure 3-5 Recommended usage of RF ports on an RRU3942 used for DBS3900 GSM

V100R014C00 and later versions or DBS3900 GSM V300R014C00 and later versions

Figure 3-6 shows the recommended usage of RF ports on an RRU3942 used for DBS3900

V100R007C00 and later versions, DBS3900 WCDMA V200R014C00 and later versions, or

DBS3900 LTE V100R005C00 and later versions.

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Figure 3-6 Recommended usage of RF ports on an RRU3942 used for DBS3900 V100R007C00

and later versions, DBS3900 WCDMA V200R014C00 and later versions, or DBS3900 LTE

V100R005C00 and later versions

Table 3-3 describes how to use RF ports for RRU3642.

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Table 3-3 Usage of RF ports for RRU3642

Product Version TX/RX

Channe

Number

of Used

RF Ports

Usage Remarks

l DBS3900 LTE

V100R006C00

and later versions

1 x 1T2R 2 It is recommended that

ANT_TX/RXA and

ANT_RXC be used

together.

You can also use ANT_TX/

RXB and ANT_RXD

together.

A single

sector

1 x 2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

2 x 1T2R 4 ANT_TX/RXA and

ANT_RXC are used for one

sector; ANT_TX/RXB and

ANT_RXD are used for the

other sector.

Two sectors

1 x 2T4R 4 ANT_TX/RXA, ANT_TX/

RXB, ANT_RXC, and

ANT_RXD are used

together for one sector, with

ANT_TX/RXA and

ANT_RXC combined and

ANT_TX/RXB and

ANT_RXD combined.

A single

sector

Figure 3-7 shows the recommended usage of RF ports on an RRU3642 used for DBS3900 LTE

V100R006C00 and later versions.

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Figure 3-7 Recommended usage of RF ports on an RRU3642 used for DBS3900 LTE

V100R006C00 and later versions

3.3 RRU Indicators

This section describes six indicators on an RRU. They indicate the running status.

For detailed positions of RRU indicators, see 3.2 RRU Ports.

Table 3-4 describes RRU indicators.

Table 3-4 RRU indicators

Indicator Color Status Meaning

RUN Green Steady on There is power supply, but the module is

faulty.

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Indicator Color Status Meaning

Steady off There is no power supply, or the module is

faulty.

Blinking (on for

1s and off for 1s)

The board is functioning properly.

Blinking (on for

0.125s and off for

0.125s)

Software is being loaded to the module, or

the module is not started.

ALM Red Steady on Alarms are generated, and the module must

be replaced.

Blinking (on for

1s and off for 1s)

Alarms are generated. The alarms may be

caused by the faults on the related boards or

ports. Therefore, you need to locate the fault

before deciding whether to replace the

module.

Steady off No alarm is generated.

ACT Green Steady on The module is running properly with TX

channels enabled or the software is being

loaded without RRU running.

Blinking (on for

1s and off for 1s)

The module is running properly with TX

channels disabled.

VSWR Red Steady off No Voltage Standing Wave Ratio (VSWR)

alarm is generated.

Blinking (on for

1s and off for 1s)

VSWR alarms are generated on the

ANT_TX/RXB port.

Steady on VSWR alarms are generated on the

ANT_TX/RXA port.

Blinking (on for

0.125s and off for

0.125s)

VSWR alarms are generated on the

ANT_TX/RXA and ANT_TX/RXB ports.

CPRI0/IR0 Red or

green

Steady green The CPRI link is functioning properly.

Steady red An optical module fails to transmit or receive

signals because the optical module is faulty

or the fiber optic cable is broken.

Blinking red (on

for 1s and off for

1s)

The CPRI link is out of lock because of a

failure in clock lock between two modes or

mismatched data rates over CPRI ports.

Steady off The optical module cannot be detected, or the

optical module is powered off.

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Indicator Color Status Meaning

CPRI1/IR1 Red or

green

Steady green The CPRI link is functioning properly.

Steady red An optical module fails to transmit or receive

signals because the optical module is faulty

or the fiber optic cable is broken.

Blinking red (on

for 1s and off for

1s)

The CPRI link is out of lock because of a

failure in clock lock between two modes or

mismatched data rates over CPRI ports.

Steady off The optical module cannot be detected, or the

optical module is powered off.

3.4 Installation Scenarios

An RRU can be installed on a pole, U-steel, angle steel, wall, or IFS06. Installation scenarios

must meet heat-dissipation and waterproofing requirements of the RRU.

Requirements for the Installation Scenarios

Method of installation:

l To ensure the heat dissipation of the RRU and waterproofing of the ports at the bottom of

the RRU, the vertical deviation angle of an RRU must be less than or equal to 10 degrees,

as shown in Figure 3-8.

l On a tower, an RRU can be installed on a pole, angle steel, or U-steel. U-steel and angle

steel support the standard or reverse installation of a single RRU only.

Figure 3-8 Requirements for the vertical deviation angle of an RRU

(1) RRU

(2) Installation support (pole, U-steel, angle steel, or wall)

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Installing an RRU on a Pole

Figure 3-9 shows the diameter of a pole for installing an RRU.

Figure 3-9 Diameter of a pole

NOTICE

l The diameter of a pole for installing an RRU ranges from 60 mm (2.36 in.) to 114 mm (4.49

in.). The recommended diameter is 80 mm (3.15 in.).

l When the diameter of a pole ranges from 60 mm (2.36 in.) to 76 mm (2.99 in.), a maximum

of three RRUs can be installed on the pole.

l Only a pole whose diameter ranges from 76 mm (2.99 in.) to 114 mm (4.49 in.) supports

more than three RRUs.

l The recommended thickness of the wall of a pole is 3.5 mm (0.14 in.) or above.

A single RRU can be installed in either side-mounted or standard mode.Figure 3-10 shows a

single RRU installed on a pole.

Figure 3-10 A single RRU installed on a pole

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