Huawei RRU32602G6 Users Guide

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RRU3260

Installation Guide

Issue 10

Date 2015-12-30

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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RRU3260 Installation Guide

Purpose

This document describes the process of installing a DC blade RRU3260 (referred to as RRU in this document).

Product Versions

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

About This Document

Product Name

DBS3900 SRAN6.0 and later versions V100R004C00 and later

Intended Audience

This document is intended for:

Base station installation engineers

Organization

1 Changes in the RRU3260 Installation Guide

This chapter describes the changes in the RRU3260 Installation Guide.

Solution Version Product Version

versions

eRAN2.1 and later versions V100R003C00 and later

versions

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.

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About This Document

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 (Optional) Installing the Plastic Shells of the RRU

This section describes the procedure for installing the plastic shells of the RRU.

7 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.

8 Installing the RRU

This chapter describes the procedure for installing the RRU. The procedure for installing the RRU varies depending on installation options.

Conventions

9 Installing RRU Cables

This chapter describes the procedure for installing RRU cables.

10 Checking the RRU Hardware Installation

After an RRU is installed, check the hardware installation.

11 Powering On an RRU

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

12 Appendix

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

Symbol Conventions

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

Symbol

Description

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

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

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

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About This Document

Symbol Description

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.

[ ] 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.

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About This Document

Convention Description

[ 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.

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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RRU3260 Installation Guide Contents

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

1 Changes in the RRU3260 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..................................................................................................................................................................... 11

3.3 RRU Indicators............................................................................................................................................................. 14

3.4 Installation Scenarios....................................................................................................................................................16

3.5 Installation Clearance Requirements of an RRU..........................................................................................................24

3.5.1 Clearance for a Single RRU...................................................................................................................................... 24

3.5.2 Clearances for Three or More RRUs.........................................................................................................................27

3.5.3 Installation Spacing Between RRUs..........................................................................................................................31

4 Unpacking the Equipment.........................................................................................................34

5 Installation Process..................................................................................................................... 36

6 (Optional) Installing the Plastic Shells of the RRU..............................................................37

7 Hoisting an RRU and Related Cables onto a Tower............................................................ 39

7.1 Hoisting an RRU onto a Tower.................................................................................................................................... 40

7.2 Hoisting Fiber Optic Cables onto a Tower................................................................................................................... 43

7.3 Hoisting Power Cables onto a Tower........................................................................................................................... 46

8 Installing the RRU.......................................................................................................................49

8.1 Mounting Kits for an RRU........................................................................................................................................... 50

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

8.2.1 Installing a Single RRU.............................................................................................................................................51

8.2.2 Installing Two RRUs................................................................................................................................................. 54

8.2.3 Installing Three or More RRUs................................................................................................................................. 58

8.3 Installing the RRU on U-steel...................................................................................................................................... 63

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

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

8.6 Installing an RRU on an IFS06.....................................................................................................................................78

9 Installing RRU Cables................................................................................................................ 85

9.1 Cabling Requirements.................................................................................................................................................. 87

9.2 Cable Connections........................................................................................................................................................93

9.3 Installation Process....................................................................................................................................................... 95

9.4 RRU Cable List............................................................................................................................................................ 96

9.5 Installing an RRU PGND Cable...................................................................................................................................97

9.6 Installing an RRU RF Jumper...................................................................................................................................... 99

9.7 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable...................................................................102

9.8 Installing an RRU Alarm Cable..................................................................................................................................104

9.9 Opening the Cover Plate of an RRU Cabling Cavity................................................................................................. 106

9.10 Installing an RRU Power Cable................................................................................................................................108

9.11 Installing a CPRI Fiber Optic Cable......................................................................................................................... 110

9.12 Closing the Cover Plate of an RRU Cabling Cavity.................................................................................................113

10 Checking the RRU Hardware Installation..........................................................................116

11 Powering On an RRU............................................................................................................. 118

12 Appendix...................................................................................................................................120

12.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side.......................121

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1 Changes in the RRU3260 Installation Guide

This chapter describes the changes in the RRU3260 Installation Guide.

10 (2015-12-30)

09 (2015-08-30)

This is the tenth official release.

Compared with issue 09 (2015-08-30), this issue includes the following change:

Topic

9.11 Installing a CPRI Fiber Optic Cable Added the procedure of installing CPRI

Compared with issue 09 (2015-08-30), this issue does not include any new information and no information is deleted from this issue.

This is the ninth official release.

Compared with issue 08 (2015-03-23), this issue includes the following change:

Topic

The whole document Optimized the contents in this document.

Change Description

optical cables for single-fiber bidirectional optical modules.

Change Description

Compared with issue 08 (2015-03-23), this issue does not include any new information and no information is deleted from this issue.

08 (2015-03-23)

This is the eighth official release.

Compared with issue 07 (2014-11-10), this issue includes the following change:

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07 (2014-11-10)

1 Changes in the RRU3260 Installation Guide

Topic Change Description

The whole document Added security related precautions.

Compared with issue 07 (2014-11-10), this issue does not include any new information and no information is deleted from this issue.

This is the seventh official release.

Compared with issue 06 (2014-10-24), this issue includes the following change:

06 (2014-10-24)

Topic

9.10 Installing an RRU Power Cable Modified the precautions in the background

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

Compared with issue 06 (2014-10-24), this issue does not include any new information and no information is deleted from this issue.

This is the sixth official release.

Compared with issue 05 (2014-06-30), this issue includes the following change:

Topic

3.4 Installation Scenarios Optimized the description of restrictions.

Change Description

information.

Added the precaution that do not reversely connect the positive and negative poles in the procedure.

Change Description

8 Installing the RRU Optimized the description of the distance

between the mounting kit and the ground.

Compared with issue 05 (2014-06-30), this issue does not include any new information and no information is deleted from this issue.

05 (2014-06-30)

This is the fifth official release.

Compared with issue 04 (2013-12-30), this issue includes the following change:

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04 (2013-12-30)

1 Changes in the RRU3260 Installation Guide

Topic Change Description

3.5.1 Clearance for a Single RRU Added the clearance for a single RRU or

multiple RRUs on the bitumen ground.

3.5.2 Clearances for Three or More RRUs

Installing an RRU Alarm Cable Added notes under the procedure.

3.4 Installation Scenarios Added restrictions on RRU mounting kits in

assembled installation mode.

Compared with issue 04 (2013-12-30), this issue does not include any new information and no information is deleted from this issue.

This is the fourth official release.

03 (2013-12-23)

Compared with issue 03 (2013-12-23), this issue includes the following change:

Topic

3.4 Installation Scenarios Modified the figure showing the U-steel

Compared with issue 03 (2013-12-23), this issue does not include any new information and no information is deleted from this issue.

This is the third official release.

Compared with issue 02 (2013-06-26), this issue includes the following change:

Topic

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

Change Description

specifications.

Change Description

RRU onto a Tower.

Compared with issue 02 (2013-06-26), this issue does not include any new information and no information is deleted from this issue.

02 (2013-06-26)

This is the second official release.

Compared with issue 01 (2013-04-28), this issue includes the following change:

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01 (2013-04-28)

1 Changes in the RRU3260 Installation Guide

Topic Change Description

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

RRU.

Compared with issue 01 (2013-04-28), this issue does not include any new information and no information is deleted from this issue.

This is the first official release.

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About This Chapter

2 Installation Preparations

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 Safety Information

l RRU3260 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

2 Installation Preparations

Heat gun Phillips screwdriver (M3 to

M6)

Rubber mallet COAX crimping tool Wire stripper

Flat-head screwdriver (M3 to M6)

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2 Installation Preparations

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)

Multimeter Marker (diameter ≤ 10 mm

[0.39 in.])

Inner hexagon wrench

Fixed pulley(weightbearing capacity > 500 kg or 1102.5 lb)

Torque socket

Measuring tape

Lifting sling

5 mm

Hydraulic pliers - -

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2 Installation Preparations

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 Information About the Installation

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

3 Information About the Installation

Figure 3-2 shows RRU dimensions.

Figure 3-2 RRU dimensions

You can obtain the RRU frequency band and power supply information from the configuration label on the cover plate and obtain the RRU name from the nameplate on the side of RRU that accommodates the conversion bracket. Figure 3-3 shows the positions of the configuration label and nameplate on the RRU.

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NOTE

The actual label and nameplate may differ from what is shown in the figure.

Figure 3-3 Positions of the label and nameplate

(1) Configuration label (2) Nameplate (3) Frequency band

(4) Power supply type (5) Module name -

3.2 RRU Ports

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

Figure 3-4 shows the ports on the RRU panels.

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Figure 3-4 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

(1) Ports in the

Silkscreen Remarks

RTN(+) Power supply socket

cabling cavity

NEG(-)

CPRI0 Optical/electrical port 0, connected to the

BBU

CPRI1 Optical/electrical port 1, reserved

(2) 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 Remarks

EXT_ALM Alarm monitoring port used for monitoring

one RS485 signal and two dry contact signals

RET Communication port for the RET antenna,

supporting RET signal transmission

(3) Indicators RUN See 3.3 RRU Indicators.

ALM

ACT

VSWR

CPRI0

CPRI1

NOTE

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

Table 3-2 describes how to use RF ports.

Table 3-2 Usage of RF ports

Product Version

DBS3900 LTE V100R003C00 and later versions

TX/RX Channe l

1 x 2T4R

Number

Usage Remarks of Used RF Ports

4 ANT_TX/RXA, ANT_TX/

RXB, ANT_RXC, and

ANT_RXD are used

A single sector

together for one sector, with

ANT_TX/RXA and

ANT_RXC combined and

ANT_TX/RXB and

ANT_RXD combined.

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

V100R003C00 and later versions.

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Figure 3-5 Recommended usage of the RF ports on an RRU used for DBS3900 LTE V100R003C00 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 3-3 describes RRU indicators.

Table 3-3 RRU indicators

Indicator

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

Color Status Meaning

faulty.

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

faulty.

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

Blinking (on for

0.125s and off for

0.125s)

The board is functioning properly.

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.

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Indicator Color Status Meaning

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

VSWR alarms are generated on the ANT_TX/RXA and ANT_TX/RXB ports.

0.125s)

CPRI0 Red or

green

CPRI1 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.

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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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

Application scenarios:

To ensure proper heat dissipation of the RRU, the following requirements must be met:

l The RRU cannot be installed in an enclosed cabinet without a cooling system.

l The RRU cannot be installed in an enclosed camouflage box.

l The RRU cannot be installed in an enclosed equipment room without a cooling system.

l When multiple RRUs are installed in centralized mode, the minimum clearance

requirements must be met. For details about the minimum clearance requirements, see

3.5.2 Clearances for Three or More RRUs and 3.5.3 Installation Spacing Between RRUs.

l RRU mounting kits in assembled installation mode are not allowed in indoor scenarios.

3 Information About the Installation

NOTICE

If the RRU is improperly installed, heat dissipation of the RRU deteriorates and the RRU may not work properly, as shown in Figure 3-6.

Figure 3-6 Improperly installed RRUs

Method of installation:

l The installation supports' specifications described in this document are only based on the

exterior and dimensions of the mounting kits. Before installing equipment, assess the strength and reliability of the installation support to determine whether it can bear the weight of the equipment.

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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 3-7.

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

installation mode (one side instead of the rear of an RRU is mounted on the support) is recommended for RRUs on the main pole secured on a tower. This installation mode allows multiple RRUs to be installed next to each other at the same level on a pole. When the horizontal distance between the main and auxiliary poles on a tower is equal to or greater than 810 mm (23.62 in.), the side-mounted mode is recommended for installing RRUs on the auxiliary pole to meet the minimum clearance requirements. Otherwise, the standard mode is recommended for installing RRUs on the auxiliary pole.

Figure 3-7 Requirements for the vertical deviation angle of an RRU

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

Installing an RRU on a Pole

Figure 3-8 shows the diameter of a pole for installing an RRU.

Figure 3-8 Diameter of a pole

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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 and the side-mounted installation is recommended.

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.

Figure 3-9 shows a single RRU installed on a pole.

Figure 3-9 A single RRU installed on a pole

Figure 3-10 shows two RRUs installed on a pole.

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Figure 3-10 Two RRUs installed on a pole

Installing an RRU on U-steel

Figure 3-11 shows U-steel specifications.

Figure 3-11 U-steel specifications

NOTICE

U-steel supports the standard or reverse installation of a single RRU only.

Figure 3-12 shows an RRU installed on U-steel.

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Figure 3-12 RRU installed on U-steel

Installing an RRU on Angle Steel

Figure 3-13 shows angle steel specifications.

Figure 3-13 Angle steel specifications

NOTICE

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

Figure 3-14 shows an RRU installed on angle steel.

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Figure 3-14 RRU installed on angle steel

Installing an RRU on a Wall

The wall for installing RRUs must meet the following requirements:

l For each RRU, the wall must be able to bear a weight four times the RRU's weight and

the bolts' pulling force of 1.25 kN (281.25 lbf) vertical to the wall.

l Expansion anchor bolts must be tightened to 30 N·m (265.52 lbf·in.) so that the bolts

stay secured without damaging the wall.

NOTICE

l It is recommended that the RRU be installed on a wall in standard mode.

l When RRUs are installed on a wall in side-mounted mode, do not combine mounting

brackets for multiple RRUs, as shown in Figure 3-15.

Figure 3-15 Correct installation of mounting brackets for multiple RRUs installed on a wall in side-mounted mode

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Figure 3-16 shows an RRU installed on a wall.

Figure 3-16 RRU installed on a wall

Installing an RRU on an IFS06

In an IFS06 scenario:

l The upper and lower adjustable beams on an IFS06 can be moved up and down to fit for

heights of RRUs.

l The IFS06 supports at least three RRUs when the ambient temperature is higher than or

equal to the lowest operating temperature of the RRU and at least 5°C (41°F) lower than the highest operating temperature of the RRU. The IFS06 supports a maximum of six RRUs when the ambient temperature is higher than or equal to the lowest operating temperature of the RRU and at least 10°C (50°F) lower than the highest operating temperature of the RRU.

NOTE

For details about the operating temperature of the RRU, see section "Technical Specifications of RRUs" in 3900 Series Base Station Technical Description.

NOTICE

The mounting brackets for multiple RRUs cannot be combined when the RRUs are installed on an IFS06, as shown in Figure 3-17.

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Figure 3-17 Correct installation of mounting brackets for RRUs installed on an IFS06

Figure 3-18 and Figure 3-19 show RRUs installed on an IFS06.

Figure 3-18 Three RRUs installed on an IFS06

(1) Height-restricted scenario (2) Height-unrestricted scenario

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Figure 3-19 Six RRUs installed on an IFS06

(1) Height-restricted scenario (2) Height-unrestricted scenario

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.

3.5.1 Clearance for a Single RRU

This section describes the recommended and minimum clearance for a single RRU.

NOTICE

If an RRU is installed on the bitumen ground, the RRU must be at least 500 mm (700 mm or more as recommended) away from the bitumen ground. The following describes the space requirements for installing a single RRU on the non-bitumen ground.

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NOTE

l The recommended clearance ensures normal running and provides an appropriate space for

operation and maintenance (OM). If there is sufficient space, leave the recommended clearance after installing the equipment.

l The minimum clearance ensures normal running and heat dissipation, but OM activities such as

checking indicator status and opening the cabling cavity cannot be properly conducted. If the installation space is restricted, leave the minimum clearance after installing the equipment.

Clearance for a Single RRU in Standard or Reverse Mode

Figure 3-20 shows the clearance for a single RRU in standard or reverse mode.

Figure 3-20 Clearance for a single RRU in standard or reverse mode

3 Information About the Installation

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Clearance for a Single RRU in Side-Mounted Mode

Figure 3-21 shows the clearance for a single RRU in side-mounted mode.

Figure 3-21 Clearance for a single RRU in side-mounted mode

3 Information About the Installation

Clearance for a Single Tower-mounted RRU

Figure 3-22 and Figure 3-23 show the clearance for a single tower-mounted RRU in standard

or reverse mode and in side-mounted mode, respectively.

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Figure 3-22 Minimum clearance for a single tower-mounted RRU in standard or reverse mode

Figure 3-23 Minimum clearance for a single tower-mounted RRU in side-mounted mode

3.5.2 Clearances for Three or More RRUs

This section describes the recommended and minimum clearances for three or more RRUs.

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NOTICE

NOTE

l The recommended clearances ensure normal running and provide an appropriate space for operation

and maintenance (OM). If there is sufficient space, retain the recommended clearances.

l The minimum clearances ensure normal running and heat dissipation but do not allow OM activities

such as checking indicator status and opening the cabling cavity. If the installation space is insufficient, retain the minimum clearances after the installation.

Recommended Clearances for Three or More RRUs Installed on a Pole

Figure 3-24 shows the recommended clearances for multiple RRUs installed in centralized

mode.

Figure 3-24 Recommended clearances for three or more RRUs installed on a pole

Minimum Clearances for Three or More RRUs Installed on a Pole

Figure 3-25 shows the minimum clearances for multiple RRUs installed in centralized mode.

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Figure 3-25 Minimum clearances for three or more RRUs installed on a pole

Recommended Clearances for Three or More RRUs Installed on a Wall in Standard Mode

Figure 3-26 shows the recommended clearances for multiple RRUs installed on a wall in

standard mode.

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Figure 3-26 Recommended clearances for three or more RRUs installed on a wall in standard mode

Minimum Clearances for Three or More RRUs Installed on a Wall in Standard Mode

Figure 3-27 shows the minimum clearances for three or more RRUs installed on a wall in

standard mode.

Figure 3-27 Minimum clearances for three or more RRUs installed on a wall in standard mode

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Recommended Clearances for Three or More RRUs Installed on a Wall in SideMounted Mode

Figure 3-28 shows the recommended clearances for three or more RRUs side-mounted on a

wall.

Figure 3-28 Recommended clearances for three or more RRUs installed on a wall in sidemounted mode

3.5.3 Installation Spacing Between RRUs

This section describes the horizontal and vertical spacing between RRUs.

Recommended Horizontal Spacing Between RRUs

Figure 3-29 shows the recommended horizontal spacing between RRUs.

Figure 3-29 Recommended horizontal spacing between RRUs

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Minimum Horizontal Spacing Between RRUs

Figure 3-30 shows the minimum horizontal spacing between RRUs.

Figure 3-30 Minimum horizontal spacing between RRUs

Recommended Vertical Spacing Between RRUs

Figure 3-31 shows the recommended vertical spacing between RRUs.

3 Information About the Installation

Figure 3-31 Recommended vertical spacing between RRUs

Minimum Vertical Spacing Between RRUs

Figure 3-32 shows the minimum vertical spacing between RRUs.

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Figure 3-32 Minimum vertical spacing between RRUs

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Context

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.

Procedure

Step 1 Check the total number of articles in each case according to the packing list.

NOTE

When transporting, moving, or installing the equipment, components, or parts, you must:

l Prevent them from colliding with doors, walls, shelves, or other objects.

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

sweat-soaked gloves, or dirty gloves.

NOTICE

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

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

If ...

The total number tallies with the packing list

Then ...

Go to Step 2.

The total number does not tally with the packing list

Step 2 Check the exterior of the packing case.

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

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4 Unpacking the Equipment

If ... Then ...

The outer packing is intact Go to Step 3.

The outer packing is severely damaged or soaked

Step 3 Check the type and quantity of the equipment in the cases according to the packing list.

If ...

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

Either shipment shortage, wrong shipment or damaged articles.

Find out the cause and report it to the local Huawei office.

Then ...

Sign the Packing List with the customer.

Report to the local Huawei office.

CAUTION

l To protect the equipment and prevent damage to the equipment, you are advised to keep

the unpacked equipment and packing materials indoors, take photos of the stocking environment, packing case or carton, packing materials, and any rusted or eroded equipment, and then file the photos.

l Verify that the insulation layers of all RRU cables are intact. If the insulation layers are

damaged or broken, water will penetrate into the cables, which may cause damages to RRUs or human injury.

----End

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5 Installation Process

The installation process involves installing an RRU and RRU cables, checking the RRU hardware installation, and powering on the RRU.

Figure 5-1 shows the process of installing an RRU.

Figure 5-1 Process of installing an RRU

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6 (Optional) Installing the Plastic Shells of the RRU

6 (Optional) Installing the Plastic Shells of

the RRU

This section describes the procedure for installing the plastic shells of the RRU.

Context

Procedure

Step 1 Use an M6 Phillips screwdriver to loosen the two screws on the metal sheet of the RRU and

An RRU is equipped with a plastic shell only when necessary.

remove the metal sheet, as shown in Figure 6-1.

Figure 6-1 Removing the metal sheet

(1) Screw

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(2) Metal sheet

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Step 2 Install a buckle on each side at the bottom of the RRU, and use an M4 torque wrench to

6 (Optional) Installing the Plastic Shells of the RRU

tighten the screws on the buckles to 1.4 N·m (12.39 lbf·in.), as shown in Figure 6-2.

Figure 6-2 Installing buckles at the bottom

(1) Buckle

(2) Screw

Step 3 Use four hex screws to secure the plastic shells onto the RRU and use an M6 hex key wrench

to tighten the screws to 2.8 N·m (24.78 lbf·in.), as shown in Figure 6-3.

Figure 6-3 Installing the plastic shells of the RRU

----End

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7 Hoisting an RRU and Related Cables onto a Tower

7 Hoisting an RRU and Related Cables onto a

Tower

About This Chapter

This section describes the procedure for hoisting an RRU and related cables onto a tower and the precautions that must be taken.

7.1 Hoisting an RRU onto a Tower

This section describes the procedures and precautions for hoisting an RRU and its mounting kits onto a tower. In tower-mounted scenarios, the RRU can be installed on a pole, U-steel, or angle steel.

7.2 Hoisting Fiber Optic Cables onto a Tower

This section describes the procedure for hoisting fiber optic cables onto a tower and the precautions that must be taken.

7.3 Hoisting Power Cables onto a Tower

This section describes the procedure for hoisting power cables onto a tower and the precautions that must be taken.

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7 Hoisting an RRU and Related Cables onto a Tower

7.1 Hoisting an RRU onto a Tower

This section describes the procedures and precautions for hoisting an RRU and its mounting kits onto a tower. In tower-mounted scenarios, the RRU can be installed on a pole, U-steel, or angle steel.

Prerequisites

When the RRU is powered by an AC/DC power module, you need to install the AC/DC power module onto the RRU before hoisting them onto a tower. For detailed operations, see AC/DC Power Module User Guide or OPM15M User Guide.

NOTICE

l Place a foam pad or cardboard on the ground to protect the housing of the RRU from

damage before the binding. Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

Procedure

Step 1 After climbing up to the tower, technician A secures the fixed pulley to the tower platform

Step 2 Technician C binds the mounting kits using the lifting sling and traction sling on the ground,

l The routing and protection of power cables should follow the local safety regulations,

industry standards, and enterprise standards of the operator.

support and leads the lifting sling through the fixed pulley.

as shown in Figure 7-1. Then technician B pulls the lifting sling downwards, and technician C pulls the traction sling outwards to protect the mounting kits from colliding with the tower.

Figure 7-1 Binding mounting kits for the RRU

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Step 3 Technician A catches the mounting kits and then unties the slings.

Step 4 Install the mounting kits. For detailed operations, see steps 1 to 3 in 8.2.1 Installing a Single

Step 5 Technician C binds the RRU using the lifting sling and traction sling, as shown in Figure 7-2.

7 Hoisting an RRU and Related Cables onto a Tower

(1) Lifting sling (2) Traction sling

RRU.

The binding methods in Figure 7-3 and Figure 7-4 are incorrect.

Figure 7-2 Binding the RRU

(1) Handle (2) Lifting sling (3) Traction eye (4) Traction sling

Figure 7-3 Incorrect binding method (1)

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7 Hoisting an RRU and Related Cables onto a Tower

Figure 7-4 Incorrect binding method (2)

Step 6 Hoist the RRU onto the tower, as shown in Figure 7-5. Technician B pulls the lifting sling

downwards, and technician C pulls the traction sling outwards to protect the RRU from colliding with the tower.

Figure 7-5 Hoisting the RRU onto the tower

(1) Lifting sling (2) Fixed pulley (3) Traction sling

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Step 7 Technician A catches the RRU hoisted onto the tower.

Step 8 Technician A installs the RRU onto the main bracket and uses an inner hexagon torque

Step 9 Untie the lifting sling and traction sling.

7 Hoisting an RRU and Related Cables onto a Tower

NOTICE

l The load-bearing capacity of each sling must be greater than 200 kg (441 lb) and the

diameter of each sling must be less than 25 mm (0.98 in.).

l When hoisting each device onto a tower, protect them from colliding with the tower.

l Hoist the RRU onto the tower before it is installed on a pole, angle steel, or U-steel.

l Do not hoist any thing by the traction eye.

screwdriver to tighten the captive screw into the hole of the attachment plate and main bracket to 5 N·m (44.25 lbf·in.). For detailed operations, see steps 4 and 5 in 8.2.1 Installing a Single

RRU.

NOTE

The procedure for hoisting the RRU and its mounting kits onto the tower is for your reference only.

----End

7.2 Hoisting Fiber Optic Cables onto a Tower

This section describes the procedure for hoisting fiber optic cables onto a tower and the precautions that must be taken.

Context

Cabling requirements for power cables are met. For details, see 9.1 Cabling Requirements.

Procedure

Step 1 Hoist the fiber optic cables onto the tower, as shown in Figure 7-6.

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Figure 7-6 Hoisting fiber optic cables onto the tower

(1) Lifting sling (2) Fixed pulley (3) Traction sling

NOTICE

Before hoisting fiber optic cables onto the tower, connect the fiber optic cables to the RRU or BBU based on the labels on both ends of the cables and determine the hoisting direction.

1. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower platform support and leads the lifting sling through the fixed pulley.

2. Installation engineer B places the fiber coiler for coiling fiber optic cables on the fiber spools, and installation engineer D lead the lifting sling through the stretch sling of the fiber optic cables and use the other sling as a traction sling to secure the cables 4 m (13.12 ft) away from the lifting sling, as shown in Figure 7-7.

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Figure 7-7 Binding fiber optic cables

(1) Lifting sling (2) Stretch sling (3) Traction sling

NOTICE

Do not remove the stretch sling and protection pipe or bind fiber optic cables using one sling, as shown in Figure 7-8.

Figure 7-8 Incorrect binding method

3. Installation engineer B rotates the fiber spools at the speed of 5 m (16.4 ft) to 15 m (49.21 ft) per minute to coil the fiber optic cables.

4. Installation engineer C pulls the lifting sling downwards, and installation engineer D pulls the traction sling outwards to protect the fiber optic cables from colliding with the tower.

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Step 2 Secure the fiber optic cables to the tower vertically using cable clips.

Step 3 Remove the lifting sling, traction sling, and protection pipe.

NOTE

The procedure for hoisting the fiber optic cables onto the tower is for your reference only.

----End

7 Hoisting an RRU and Related Cables onto a Tower

7.3 Hoisting Power Cables onto a Tower

This section describes the procedure for hoisting power cables onto a tower and the precautions that must be taken.

Context

Cabling requirements for power cables are met. For details, see 9.1 Cabling Requirements.

The procedure for adding a connector to the RRU power cable on the RRU side is done under the tower.

Procedure

Step 1 Hoist the power cables onto the tower, as shown in Figure 7-9.

Figure 7-9 Hoisting power cables onto the tower

(1) Lifting sling (2) Fixed pulley

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1. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower platform support and leads the lifting sling through the fixed pulley.

2. Installation engineer B secures three cable ties to the power cable connector, and then secures the power cable to the lifting sling, as shown in Figure 7-10.

NOTE

The connector on the power cable in the figure is only an example. The actual connector may vary according to the situation.

Figure 7-10 Binding cable ties

3. Installation engineer B wraps the power cable connector with a layer of PVC insulation tape, as shown in Figure 7-11.

NOTE

Wrap the PVC insulation tape from 30 mm (1.18 in.) away from one end of the connector until it reaches the other end of the connector. The total length of the wrapped connector is 100 mm (3.94 in.).

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Figure 7-11 Wrapping the PVC insulation tape

4. Installation engineer C pulls the lifting sling downwards, and installation engineer B pulls the other end of the lifting sling outwards to protect the power cables from colliding with the tower.

Step 2 Secure the power cables to the tower vertically using cable clips.

Step 3 Remove the cable ties, PVC insulation tape, and lifting sling.

NOTE

The procedure for hoisting the power cables onto the tower is for your reference only.

----End

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About This Chapter

This chapter describes the procedure for installing the RRU. The procedure for installing the RRU varies depending on installation options.

8 Installing the RRU

8.1 Mounting Kits for an RRU

This section describes the bracket assembly and the attachment plate for an RRU.

8.2 Installing the RRU on a Pole

One or more RRUs can be installed on a pole.

8.3 Installing the RRU on U-steel

This section describes the procedure and precautions for installing the RRU on U-steel. An RRU can be installed on U-steel secured on the ground or a tower. Each piece of U-steel allows only one RRU to be installed in standard or reverse mode.

8.4 Installing the RRU on Angle Steel

This section describes the procedure and precautions for installing the RRU on angle steel. An RRU can be installed on angle steel secured on the ground or a tower. Each piece of angle steel allows only one RRU to be installed in standard or reverse mode.

8.5 Installing the RRU on a Wall

This section describes the procedure and precautions for installing the RRU on a wall.

8.6 Installing an RRU on an IFS06

This section describes the procedure and precautions for installing an RRU on an IFS06.

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8.1 Mounting Kits for an RRU

This section describes the bracket assembly and the attachment plate for an RRU.

Figure 8-1 shows the front and side of an RRU.

Figure 8-1 Front and side view of an RRU

8 Installing the RRU

(1) Front view (2) Side view (3) Attachment plate

Figure 8-2 shows the bracket assembly for an RRU.

Figure 8-2 12 L blade RRU mounting kit

(1) Plastic cap (2) Standard M10

nut

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(3) Spring washer (4) Thick flat washer (5) Square-neck bolt

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8 Installing the RRU

(6) Hoist clamp on the main bracket

(7) Main bracket (8) Inner hexagon

screw

8.2 Installing the RRU on a Pole

One or more RRUs can be installed on a pole.

8.2.1 Installing a Single RRU

This section describes the procedure and precautions for installing a single RRU on a pole.

Prerequisites

Before you install an RRU on a pole secured on a tower, the RRU and its mounting brackets are hoisted onto the tower. For details, see 7.1 Hoisting an RRU onto a Tower.

The hoist clamp on the main bracket is secured properly.

(9) Pole installation bracket

(10) Auxiliary bracket

Procedure

Step 1 Determine a position for installing the mounting brackets.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

l If the pole must be installed on a tower, determine a position for installing the mounting

brackets according to the instructions in 3.5.1 Clearance for a Single RRU.

l If the pole must be installed on the ground, determine a position for installing the

mounting brackets according to Figure 8-3.

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Figure 8-3 Distance between the mounting brackets and the ground

NOTE

As shown in the figure above, it is recommended that the mounting kits be installed at a position 1200 mm (47.24 in.) to 1600 mm (59.06 in.) high above the ground. If the space is insufficient, only the 3.5 Installation Clearance Requirements of an RRU needs to be provided.

Step 2 Install the RRU mounting brackets, as shown in Figure 8-4.

Figure 8-4 Installing the RRU mounting brackets

NOTE

Verify that the arrows on the mounting brackets are pointing up.

1. Adjust the position of the nut and remove one end of the square-neck bolt from the slot on the auxiliary bracket.

2. Slide the mounting brackets onto the pole horizontally and insert the square-neck bolt into the slot.

Step 3 Use a 16 mm (0.63 in.) M10 torque wrench to tighten the nuts to 40 N·m (354.03 lbf·in.) so

that the mounting brackets are secured onto the pole, as shown in Figure 8-5.

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8 Installing the RRU

NOTICE

Tighten the nuts on the two square-neck bolts alternatively. After the main and auxiliary brackets are secured properly, measure the spacing between the brackets on both sides and ensure that the spacing is the same on the two sides.

Figure 8-5 Securing the RRU mounting brackets

Step 4 Install the RRU onto the main bracket, as shown in Figure 8-6.

Figure 8-6 Installing the RRU onto the main bracket

Step 5 Use an inner hexagon torque screwdriver to tighten the captive screw into the holes on the top

of the attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in Figure 8-7.

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8 Installing the RRU

Figure 8-7 Securing the captive screw into the connection hole

----End

8.2.2 Installing Two RRUs

This section describes the procedure and precautions for installing two RRUs on a pole.

Prerequisites

The hoist clamp on the main bracket is secured properly.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

Procedure

Step 1 Install the first RRU onto the main bracket, as shown in Figure 8-8. For details, see 8.2.1

Installing a Single RRU.

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8 Installing the RRU

Figure 8-8 Installing the first RRU onto the main bracket

Step 2 Use an M6 inner hexagon screwdriver to remove the four inner hexagon screws from the

second set of mounting brackets, and remove the main bracket from the auxiliary bracket, as shown in Figure 8-9.

Figure 8-9 Removing the RRU main bracket

(1) Main bracket (2) Pole installation bracket

Step 3 Install the removed main bracket on one side of the first main bracket, as shown in Figure

8-10.

NOTICE

The second main bracket must be installed with the opening ends of U-shaped slots on both sides facing downwards.

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Figure 8-10 Installing the second main bracket

(1) Removed main bracket

NOTE

The main mounting bracket for installing a 12 L blade RRU can connect to the main mounting bracket for installing a common RRU in the scenarios of adding RRUs, as shown in Figure 8-11.

Figure 8-11 Connect to the main mounting bracket for installing a common RRU

(1) Main mounting bracket for a 12 L blade RRU (2) Main mounting bracket for a common RRU

Step 4 Install the second RRU onto the main bracket, as shown in Figure 8-12.

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Figure 8-12 Installing the second RRU onto the main bracket

NOTICE

After installing each RRU on its main bracket, use an inner hexagon torque screwdriver to tighten the captive screw into the holes of the attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in

Figure 8-13.

Figure 8-13 Securing the captive screw into the connection hole

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Step 5 Install the metal sheet for neighboring RRUs, as shown in Figure 8-14.

8 Installing the RRU

Figure 8-14 Installing the metal sheet

(1) Screw (2) Metal sheet

1. Use an M6 Phillips screwdriver to loosen the screw on the metal sheet farther from the handle of the second RRU and remove the screw.

2. Use an M6 Phillips screwdriver to loosen the screw on the metal sheet closer to handle of the second RRU. Then rotate the metal sheet to align the vacant hole in the metal sheet with a hole on the top of the first RRU.

3. Insert the removed screw into the hole on the top of the first RRU and use an M6 torque screwdriver to tighten the screw to 5 N·m (44.25 lbf·in.).

----End

8.2.3 Installing Three or More RRUs

The section describes the procedure and precautions for installing three or more RRUs on a pole.

Prerequisites

The hoist clamp on the main bracket is secured properly.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

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Context

Procedure

Step 1 Install the two RRUs, as shown in Figure 8-15. For details, see 8.2.2 Installing Two RRUs.

8 Installing the RRU

A pole supports the installation of three, four, or six RRUs. The procedures for installing them are the same. Following is the procedure of installing four RRUs on a pole.

NOTICE

Modules can be combined only when installed on one or more poles, and a maximum of three modules can be combined.

Figure 8-15 Two RRUs installed on a pole

Step 2 Use an M6 inner hexagon screwdriver to remove the four inner hexagon screws from the

second set of mounting brackets, and remove the main bracket from the auxiliary bracket, as shown in Figure 8-16.

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Step 3 Install the third main bracket and install the third RRU onto the third main bracket. Then use

8 Installing the RRU

Figure 8-16 Removing the RRU main bracket

(1) Main bracket (2) Pole installation bracket

an inner hexagon torque screwdriver to tighten the captive screw into the connection holes on the top of the attachment plate and main bracket for the RRU, with a torque of 5 N·m (44.25 lbf·in.), as shown in Figure 8-17.

NOTICE

The third main bracket must be installed with the opening ends of U-shaped slots on both sides facing downwards.

Figure 8-17 Installing the third RRU onto the third main bracket

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8 Installing the RRU

NOTE

The main mounting bracket for installing a 12 L blade RRU can connect to the main mounting bracket for installing a common RRU in the scenarios of adding RRUs, as shown in Figure 8-11.

Figure 8-18 Connect to the main mounting bracket for installing a common RRU

(1) Main mounting bracket for a 12 L blade RRU (2) Main mounting bracket for a common RRU

Step 4 Install the metal sheet for neighboring RRUs, as shown in Figure 8-19.

Figure 8-19 Installing the metal sheet

(1) Screw (2) Metal sheet

1. Use an M6 Phillips screwdriver to loosen the screw on the metal sheet farther from the handle of the first RRU and remove the screw.

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Step 5 Install the second set of RRU mounting brackets above or below the first set of RRU

8 Installing the RRU

2. Use an M6 Phillips screwdriver to loosen the screw on the metal sheet closer to handle of the first RRU. Then rotate the metal sheet to align the vacant hole in the metal sheet with a hole on the top of the third RRU.

3. Insert the removed screw into the hole on the top of the third RRU and use an M6 torque screwdriver to tighten the screw to 5 N·m (44.25 lbf·in.).

mounting brackets and maintain a space equal to or greater than 80 mm (3.15 in.) between the two sets of brackets, as shown in Figure 8-20.

Figure 8-20 Installing the second set of RRU mounting brackets

Step 6 Install the fourth RRU onto the fourth main bracket, use an inner hexagon torque screwdriver

to tighten the captive screw into the holes of the attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in

Figure 8-21.

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Figure 8-21 Installing the fourth RRU onto the fourth main bracket

----End

8.3 Installing the RRU on U-steel

Prerequisites

Before you install an RRU on U-steel secured on a tower, the RRU and its mounting brackets are hoisted onto the tower. For details, see 7.1 Hoisting an RRU onto a Tower.

The hoist clamp on the main bracket is secured properly.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

Context

Figure 8-22 shows the top view of the RRU installed on U-steel.

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NOTICE

When the width of the narrower edges of the U-steel is less than 40 mm (1.57 in.), only the a and b modes are supported.

Figure 8-22 Top view of the RRU

Procedure

Step 1 Determine a position for installing the mounting brackets.

(1) U-steel

l If the RRU must be installed on U-steel secured on a tower, see 3.5.1 Clearance for a

Single RRU to determine a position.

l If the RRU must be installed on U-steel secured on the ground, see Figure 8-23 to

determine a position.

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Figure 8-23 Distance between the mounting brackets and the ground

NOTE

Step 2 Install the RRU mounting brackets, as shown in Figure 8-24.

Figure 8-24 Installing the RRU mounting brackets

NOTE

Verify that the arrows on the mounting brackets are pointing up.

1. Adjust the position of the nut and remove one end of the square-neck bolt from the slot on the auxiliary bracket.

2. Slide the mounting brackets onto the U-steel horizontally and insert the square-neck bolt into the slot.

Step 3 Use a 16 mm (0.67 in.) M10 torque wrench to tighten the nuts to 40 N·m (354.03 lbf·in.) so

that the mounting brackets are secured onto the U-steel, as shown in Figure 8-25.

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NOTICE

Figure 8-25 Securing the RRU mounting brackets

Step 4 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU,

reinstall the attachment plate onto the rear of the RRU, and tighten the four stainless screws to 5 N·m (44.25 lbf·in.), as shown in Figure 8-26.

Figure 8-26 Installing the attachment plate onto the rear of the RRU

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Step 5 Install the RRU onto the main bracket, as shown in Figure 8-27.

8 Installing the RRU

Figure 8-27 Installing the RRU onto the main bracket

Step 6 Use an inner hexagon screwdriver to tighten the captive screw into the holes on the top of the

attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in Figure 8-28.

Figure 8-28 Securing the captive screw into the connection hole

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----End

8.4 Installing the RRU on Angle Steel

Prerequisites

Before you install an RRU on angle steel secured on a tower, the RRU and its mounting brackets are hoisted onto the tower. For details, see 7.1 Hoisting an RRU onto a Tower.

The hoist clamp on the main bracket is secured properly.

8 Installing the RRU

Context

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

Figure 8-29 shows the top view of the RRU installed on angle steel.

Figure 8-29 Top view of the RRU

(1) Angle steel

Procedure

Step 1 Determine a position for installing the mounting brackets.

l If the RRU must be installed on angle steel secured on a tower, see 3.5.1 Clearance for

a Single RRU to determine a position.

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l If the RRU must be installed on angle steel secured on the ground, see Figure 8-30 to

determine a position.

Figure 8-30 Distance between the mounting brackets and the ground

NOTE

Step 2 Install the RRU mounting brackets, as shown in Figure 8-31.

Figure 8-31 Installing the RRU mounting brackets

NOTE

Verify that the arrows on the mounting brackets are pointing up.

1. Adjust the position of the nut and remove one end of the square-neck bolt from the slot on the auxiliary bracket.

2. Slide the mounting brackets onto the angle steel horizontally and insert the square-neck bolt into the slot.

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Step 3 Use a 16 mm (0.67 in.) M10 torque wrench to tighten the nuts to 40 N·m (354.03 lbf·in.) so

8 Installing the RRU

that the mounting brackets are secured onto the angle steel, as shown in Figure 8-32.

NOTICE

Figure 8-32 Securing the RRU mounting brackets

Step 4 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU,

reinstall the attachment plate onto the rear of the RRU, and tighten the four stainless screws to 5 N·m (44.25 lbf·in.), as shown in Figure 8-33.

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Figure 8-33 Installing the attachment plate onto the rear of the RRU

Step 5 Install the RRU onto the main bracket, as shown in Figure 8-34.

Figure 8-34 Installing the RRU onto the main bracket

Step 6 Use an inner hexagon screwdriver to tighten the captive screw into the holes on the top of the

attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in Figure 8-35.

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Figure 8-35 Securing the captive screw into the connection hole

----End

8.5 Installing the RRU on a Wall

This section describes the procedure and precautions for installing the RRU on a wall.

Prerequisites

The hoist clamp on the main bracket is secured properly.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

Context

The wall on which RRUs are installed must meet the following requirements:

l For each RRU, the wall must be able to bear a weight four times the RRU's weight and

the bolts' pulling force of 1.25 kN (281.25 lbf) vertical to the wall.

l Expansion anchor bolts must be tightened to 30 N·m (265.52 lbf·in.) so that the bolts

stay secured without damaging the wall.

Procedure

Step 1 Disassemble the RRU mounting brackets, as shown in Figure 8-36.

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Figure 8-36 Disassembling the mounting brackets

(1) Main bracket (2) Square-neck bolt (3) Pole installation bracket (4) Auxiliary bracket

(5) Flat washer (6) Spring washer (7) Nut (8) Plastic cap

1. Use an M6 inner hexagon torque screwdriver to remove the four inner hexagon screws on the pole installation bracket, and remove the main bracket from the pole installation bracket.

2. Use an M10 torque wrench to loosen the nuts on the two square-neck bolts, and remove the plastic cap, nuts, spring washers, flat washers, square-neck bolts, and pole installation bracket from the auxiliary bracket.

Step 2 Place the pole installation bracket against the installation position, use a level to verify that

the pole installation bracket is placed horizontally, and then mark anchor points with a marker, as shown in Figure 8-37.

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Figure 8-37 Marking anchor points

(1) Level (2) Pole installation bracket (3) RRU

NOTE

As shown in the figure above, it is recommended that the pole installation bracket be installed at a position 1200 mm (47.24 in.) to 1600 mm (59.06 in.) high above the ground. If the space is insufficient, only the 3.5 Installation Clearance Requirements of an RRU needs to be provided.

Step 3 Drill holes at the anchor points, and then insert expansion anchor bolt assemblies, as shown in

Figure 8-38.

Figure 8-38 Drilling a hole and inserting expansion anchor bolt assemblies

(1) M10x80 bolt (2) Nut (3) Spring washer (4) Flat washer (5) Expansion tube

1. Use a hammer drill with a Ф12 bit to drill holes vertically at the marked anchor points with the depth ranging from 55 mm (2.17 in.) to 60 mm (2.36 in.), use a vacuum cleaner to clear the dust out from inside and around the holes, and measure the distances between

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holes. If any of the hole is beyond the acceptable range, mark a new anchor point and drill a new hole.

NOTICE

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

2. Tighten the expansion anchor bolts slightly and place one vertically into each hole.

3. Use a rubber mallet to pound the expansion anchor bolt until it goes all the way into the hole.

4. Tighten and then loosen the expansion bolt, and remove the M10 bolt, spring washer, and flat washer in sequence.

NOTICE

After dismantling an expansion anchor bolt, ensure that the top of the expansion tube is on the same level as the wall. Otherwise, the device cannot be installed on the wall evenly and securely.

Step 4 Install the pole installation bracket on the expansion anchor bolts, place the flat washers,

spring washers, and nuts through the expansion anchor bolts in sequence, and then use a 16 mm (0.63 in.) torque socket to tighten the nuts to 30 N·m (265.52 lbf·in.), as shown in Figure

8-39.

Figure 8-39 Installing the pole installation bracket on the expansion anchor bolts

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Step 5 Install the main bracket onto the pole installation bracket, and use an inner hexagon

8 Installing the RRU

NOTICE

Verify that the arrows on the pole installation bracket are pointing up.

screwdriver to tighten four M6x16 inner hexagon screws to 5 N·m (44.25 lbf·in.) so that the main bracket and pole installation bracket are firmly secured, as shown in Figure 8-40.

Figure 8-40 Installing the main bracket

(1) Main bracket

Step 6 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU,

reinstall the attachment plate onto the rear of the RRU, and tighten the four stainless screws to 5 N·m (44.25 lbf·in.), as shown in Figure 8-41.

(2) Pole installation bracket

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Figure 8-41 Installing the attachment plate onto the rear of the RRU

Step 7 Install the RRU onto the main bracket, as shown in Figure 8-42.

Figure 8-42 Installing the RRU onto the main bracket

Step 8 Use an inner hexagon screwdriver to tighten the captive screw into the holes on the top of the

attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in Figure 8-43.

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Figure 8-43 Securing the captive screw into the connection hole

----End

8.6 Installing an RRU on an IFS06

This section describes the procedure and precautions for installing an RRU on an IFS06.

Prerequisites

The hoist clamp on the main bracket is secured properly.

NOTICE

l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU.

l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage

during the installation.

Context

l The upper and lower adjustable beams on an IFS06 can be moved up and down to fit for

heights of RRUs.

l RRUs can be installed on an IFS06 only when the ambient temperature is higher than or

equal to the lowest working temperature of the RRU and at least 5°C (41°F) lower than the highest working temperature of the RRU. In this scenario, the IFS06 supports at least three RRUs. When the ambient temperature is higher than or equal to the lowest working temperature of the RRU and at least 10°C (50°F) lower than the highest working temperature of the RRU, the IFS06 supports a maximum of six RRUs.

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Procedure

Step 1 Disassemble the RRU mounting brackets, as shown in Figure 8-44.

8 Installing the RRU

NOTE

For details about the operating temperature of the RRU, see section "Technical Specifications of RRUs" in 3900 Series Base Station Technical Description.

l Install RRUs in the sequence from bottom to top and from left to right.

l This section describes how to install an RRU in height-unrestricted scenarios. The

procedure for installing an RRU in height-restricted scenarios is the same as that in height-unrestricted scenarios.

l When installing the pole installation bracket, you need to use the M10x50 bolts delivered

with the IFS06.

l Rubber washers are easily compressed or broken, whereas do not need to be replaced.

Figure 8-44 Disassembling the mounting brackets

(1) Main bracket (2) Square-neck bolt (3) Pole installation bracket (4) Auxiliary bracket

(5) Flat washer (6) Spring washer (7) Nut (8) Plastic cap

1. Use an M6 inner hexagon torque screwdriver to remove the four inner hexagon screws on the pole installation bracket, and remove the main bracket from the pole installation bracket.

Step 2 Use the M10x50 bolts delivered with the IFS06 to secure the pole installation bracket to the

IFS06, and then use an M10 torque socket wrench to secure the bolts to 30 N·m (265.52 lbf·in.).

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NOTICE

Ensure that the arrows on the pole installation bracket are pointing up.

l Height-restricted scenarios

Use one finger to push and remove the rubber plugs on the beam and then install the pole installation bracket, as shown in Figure 8-45.

Figure 8-45 Installing the pole installation bracket in height-restricted scenarios

(1) Spring washer (2) Rubber washer

l Height-unrestricted scenarios

Install the pole installation bracket, as shown in Figure 8-46.

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Figure 8-46 Installing the pole installation bracket in height-unrestricted scenarios

(1) Spring washer (2) Rubber washer

Step 3 Attach the main bracket to the pole installation bracket, and use an inner hexagon screwdriver

to tighten four M6x16 screws to 5 N·m (44.25 lbf·in.) so that the main bracket and pole installation bracket are firmly secured, as shown in Figure 8-47.

Figure 8-47 Installing the main bracket

(1) Main bracket (2) Pole installation bracket

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Step 4 Attach the RRU to the main bracket, and then use an inner hexagon screwdriver to tighten the

8 Installing the RRU

captive screw into the holes of the attachment plate and main bracket to 5 N·m (44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in Figure 8-48.

Figure 8-48 Installing the RRU onto the main bracket

Step 5 Install the RRUs on the lower level from left to right, as shown in Figure 8-49.

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Figure 8-49 Installing RRUs on the lower level

Step 6 Optional: When the ambient temperature is equal to or higher than the lowest operating

temperature of the RRU and at least 10°C (10°F) lower than the highest operating temperature of the RRU, repeat the preceding steps to install the RRUs on the higher level, as shown in

Figure 8-50.

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Figure 8-50 Installing RRUs on the higher level

----End

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About This Chapter

This chapter describes the procedure for installing RRU cables.

9 Installing RRU Cables

9.1 Cabling Requirements

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

9.2 Cable Connections

This section describes the cable connections for a single RRU and multiple RRUs.

9.3 Installation Process

This section describes the process of installing RRU cables.

9.4 RRU Cable List

This section describes RRU cable connections.

9.5 Installing an RRU PGND Cable

This section describes the procedure for installing an RRU PGND cable.

9.6 Installing an RRU RF Jumper

This section describes the procedure for installing an RRU RF jumper.

9.7 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable

This section describes the procedures for installing an RRU AISG multi-wire cable and AISG extension cable.

9.8 Installing an RRU Alarm Cable

This section describes the procedure for installing an RRU alarm cable.

9.9 Opening the Cover Plate of an RRU Cabling Cavity

This section describes the procedure for opening the cover plate of an RRU cabling cavity.

9.10 Installing an RRU Power Cable

This section describes the procedure for installing an RRU power cable.

9.11 Installing a CPRI Fiber Optic Cable

This section describes the procedure for installing a CPRI fiber optic cable.

9.12 Closing the Cover Plate of an RRU Cabling Cavity

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This section describes the procedure for closing the cover plate of an RRU cabling cavity.

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9.1 Cabling Requirements

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

NOTE

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

General Cabling Requirements

Bending radius requirements

l The bending radius of a 7/8'' feeder must be greater than 250 mm (9.84 in.), and the

bending radius of a 5/4'' feeder must be greater than 380 mm (14.96 in.).

l The bending radius of a 1/4'' jumper must be greater than 35 mm (1.38 in.). The bending

radius of a super-flexible 1/2'' jumper must be greater than 50 mm (1.97 in.), and the bending radius of an ordinary 1/2'' jumper must be greater than 127 mm (5 in.).

l The bending radius of a power cable or PGND cable must be at least three times its

diameter.

9 Installing RRU Cables

l The bending radius of a fiber optic cable is at least 20 times of its diameter, and the

bending radius of a breakout cable is at least 30 mm (1.18 in.).

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

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

Cable binding requirements

l Cables of the same type must be bound together.

l Different types of cables must be separately laid out and bound, with a minimum

distance of 30 mm (1.18 in.) from each other.

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

damaged.

l The cable ties must face the same direction, and those at the same horizontal line must be

in a straight line.

l The excess of the indoor cable ties is cut off. The excess of 5 mm (0.197 in.) of the

outdoor cable ties is reserved, and the cut surfaces are smooth without sharp edges.

l After cables are installed, labels or nameplates must be attached to the cables at their

ends, curves, and interconnection positions.

Security requirements

l When routing cables, avoid sharp objects, for example sharp edges on the wall. If

necessary, use tubes to protect the cables.

l When routing cables, keep the cables away from heat sources and use heat insulation

materials to insulate the cables from the heat sources.

l Reserve a proper distance (0.1 m or 3.937 in. is recommended) between equipment and

cables especially at the cable curves to protect the cables and equipment.

Indoor cabling requirements

l Route each cable into the room through the feeder window.

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l Reserve drip loops for all cables outside the feeder window before routing them into the

room. Ensure that the radiuses of the drip loops are greater than or equal to the minimum bending radiuses of the cables.

l When routing a cable into the room, ensure that a person is assisting you in the room.

l Apply waterproof treatment to the feeder window.

Outdoor Cabling Requirements

l After being connected to a ground clip on power cables, a ground cable must be routed

downwards to prevent water from entering the equipment to which the power cables connect.

l Protect outdoor cables against potential damage. For example, put the cables through

tubes.

l The cables to be protected include AC power cables, transmission cables, and cables laid

out underground.

l When routing cables through tubes on the ground below the cabinet, put a 30 mm to 50

mm (1.18 in. to 1.97 in.) length of the tubes into the base of the cabinet but do not put the tubes into the cabinet. Use waterproof tape or waterproof silicon gel to block both ends of the tubes and use sheet metal tabs to secure the tubes to the cable holes in the base.

l When routing cables through tubes along a metal cable trough below the cabinet, do not

put the tubes into the base of the cabinet but cover the cable trough and connect the tubes to the cable holes in the base.

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

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

l Use clips to secure cables outdoors. For the method of installing a clip, see the

installation guide delivered with the clip.

l Arrange cables neatly along the routing direction and use clips to secure the cables.

l Determine the positions where the clips are installed according to the actual situation.

For example, 7/8" feeders are secured with clips at an interval of 1.5 m to 2 m (4.92 ft to

6.56 ft), CPRI fiber optic cables and power cables are secured with clips at an interval of 1 m to 1.5 m (3.28 ft to 4.92 ft). Ensure that the clips are evenly spaced and in the same direction.

l When fastening cables with a clip, ensure that the cables are aligned neatly and are

routed through the holes in the clip. Do not stretch the cables too tightly.

9 Installing RRU Cables

NOTE

There are two types of clips: 3-hole clip and 6-hole clip, which are described as follows:

l A 3-hole clip is shown by illustration a in the following figure. It is often used to fasten feeders.

l A 6-hole clip is shown by illustration b in the following figure. It is often used to fasten power cables

and CPRI fiber optic cables.

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Figure 9-1 Exterior of the clips

(1) Cable hole for feeders (2) Cable hole for fiber optic cables (3) Cable hole for power cables

The following figure shows the cables secured on a cable tray.

Figure 9-2 Cables secured on a cable tray

(1) 3-hole clip (2) 6-hole clip

The following figure shows the cables secured on a tower.

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Figure 9-3 Cables secured on a tower

(1) 3-hole clip (2) 6-hole clip

Special Cabling Requirements

Cabling of power cables

l Power cables must be installed in the position specified in engineering design

documents.

l If the length of power cables is insufficient, replace the cables rather than adding

connectors or soldering joints to lengthen the cables.

l Cables can only be laid out under well-planned instructions. The cabling activities of

fiber optic cables are allowed only when qualified personnel and communication facilities are available.

l Do not circle and twist cables.

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l After routing a DC power cable onto the platform on a tower, route it along the shortest

path to the rails surrounding the platform, and route it along the inside of the rails.

l After routing a DC power cable close to the equipment on a tower, use clips to secure the

power cable onto a pole or the rails surrounding the platform. Ensure that there is no excessively long distance between the equipment and the position where the power cable is secured.

Cabling of PGND cables

l PGND cables for a base station must be connected to the same group of ground bars.

l PGND cables must be buried in the ground or routed indoors.

l The external conductor of the coaxial wire and the shield layer of the shielded cable must

have proper electrical contact with the metal surface of the equipment to which they are connected.

l PGND cables and signal cables must be installed separately. A certain distance must be

reserved between them to prevent interference from each other.

l Switches or fuses must not be installed on the PGND cables.

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

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

ground terminal.

Cabling of E1 cables

l E1 cables must not cross power cables, PGND cables, or RF cables when laid out. If

transmission cables are laid out with power cables, PGND cables, or RF cables in parallel, the spacing between them must be greater than 30 mm (1.18 in.).

l E1 cables are lined up straight and bound neatly with cable ties.

l Sufficient slack is provided for E1 cables at turns.

l E1 cables must not be pressed by the door of the cabinet when routed, as shown in the

following figure.

Figure 9-4 E1 cables routed in the cabinet

Cabling of fiber optic cables

l At least three people are required for laying out fiber optic cables. The cabling activities

of fiber optic cables are allowed only when qualified personnel and communication facilities are available.

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l The operating temperature of fiber optic cables ranges from -40ºC to +60ºC (-40ºF to

+140ºF). If the actual temperature is beyond this range, take protective measures or select another route.

l Do not circle and twist cables.

l Do not bind a fiber optic cable at the position where it bends.

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

cables away from sharp objects.

l When fiber optic cables are routed, the excess of the fiber optic cables must be coiled

around special devices, such as a fiber coiler.

l An unarmored fiber optic cable must be bound using binding straps. If a fiber optic patch

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

Figure 9-5 Binding fiber optic cables

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

with force.

l Unused optical connectors must be covered with dustproof caps.

l The fiber optic cables must not be pressed by the door of the cabinet when routed, as

shown in the following figures.

Figure 9-6 CPRI fiber optic cables routed in the cabinet (1)

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Huawei RRU32602G6 Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

About This Document

Contents

1 Changes in the RRU3260 Installation Guide

2 Installation Preparations

2.1 Reference Documents

2.2 Tools and Instruments

2.3 Skills and Requirements for Onsite Personnel

3 Information About the Installation

3.1 RRU Exterior

3.2 RRU Ports

3.3 RRU Indicators

3.4 Installation Scenarios

3.5 Installation Clearance Requirements of an RRU

3.5.1 Clearance for a Single RRU

3.5.2 Clearances for Three or More RRUs

3.5.3 Installation Spacing Between RRUs

4 Unpacking the Equipment

5 Installation Process

6 (Optional) Installing the Plastic Shells of the RRU

7 Hoisting an RRU and Related Cables onto a Tower

7.1 Hoisting an RRU onto a Tower

7.2 Hoisting Fiber Optic Cables onto a Tower

7.3 Hoisting Power Cables onto a Tower

8 Installing the RRU

8.1 Mounting Kits for an RRU

8.2 Installing the RRU on a Pole

8.2.1 Installing a Single RRU

8.2.2 Installing Two RRUs

8.2.3 Installing Three or More RRUs

8.3 Installing the RRU on U-steel

8.4 Installing the RRU on Angle Steel

8.5 Installing the RRU on a Wall

8.6 Installing an RRU on an IFS06

9 Installing RRU Cables

9.1 Cabling Requirements