Huawei Technologies RRU3260 Remote Radio Unit User Manual Installation Guide

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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 a DC RRU3260 (referred to as RRU in this

document).

Product Versions

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

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 RRU3260 Installation Guide

This chapter describes the changes in the RRU3260 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

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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 RRU can be installed on a pole,

U-steel, angle steel, wall, or an IFS06 . The procedure for installing the RRU varies depending

on installation options.

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.

Conventions

Symbol Conventions

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

Symbol Description

Indicates a hazard with a high level or medium level of risk

which, if not avoided, could result in death or serious injury.

Indicates a hazard with a low level of risk which, if not

avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation that, if not

avoided, could result in equipment damage, data loss,

performance deterioration, or unanticipated results.

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Symbol Description

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

time.

Provides additional information to emphasize or supplement

important points of the main text.

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.

[ 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.

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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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Contents

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

1 Changes in the RRU3260 Installation Guide...........................................................................1

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

2.1 Reference Documents.........................................................................................................................................3

2.2 Tools and Instruments........................................................................................................................................3

2.3 Skills and Requirements for Onsite Personnel...................................................................................................4

3 Information About the Installation...........................................................................................5

3.1 RRU Exterior......................................................................................................................................................6

3.2 RRU Ports...........................................................................................................................................................7

3.3 RRU Indicators.................................................................................................................................................10

3.4 Installation Scenarios........................................................................................................................................12

3.5 Installation Clearance Requirements of an RRU..............................................................................................25

3.5.1 Clearance for a Single RRU....................................................................................................................25

3.5.2 Clearance for Multiple RRUs..................................................................................................................28

3.5.3 Installation Spacing Between RRUs........................................................................................................32

4 Unpacking the Equipment.........................................................................................................35

5 Installation Process.....................................................................................................................37

6 (Optional) Installing the Plastic Shells of the RRU..............................................................38

7 Hoisting an RRU and Related Cables onto a Tower............................................................41

7.1 Hoisting an RRU onto a Tower........................................................................................................................42

7.2 Hoisting Fiber Optic Cables onto a Tower.......................................................................................................46

7.3 Hoisting Power Cables onto a Tower...............................................................................................................49

8 Installing the RRU.......................................................................................................................53

8.1 Mounting Kits for an RRU...............................................................................................................................54

8.2 Installing the RRU on a Pole............................................................................................................................55

8.2.1 Installing a Single RRU...........................................................................................................................55

8.2.2 Installing Two RRUs...............................................................................................................................58

8.2.3 Installing Three or More RRUs...............................................................................................................62

8.3 Installing the RRU on U-steel..........................................................................................................................67

8.4 Installing the RRU on Angle Steel...................................................................................................................72

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8.5 Installing the RRU on a Wall...........................................................................................................................77

8.6 Installing an RRU on an IFS06.........................................................................................................................83

9 Installing RRU Cables................................................................................................................91

9.1 Cabling Requirements......................................................................................................................................93

9.2 Cable Connections............................................................................................................................................98

9.3 Installation Process.........................................................................................................................................100

9.4 RRU Cable List..............................................................................................................................................101

9.5 Installing an RRU PGND Cable.....................................................................................................................103

9.6 Installing an RRU RF Jumper........................................................................................................................104

9.7 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable.......................................................107

9.8 Installing an RRU Alarm Cable......................................................................................................................110

9.9 Opening the Cover Plate of an RRU Cabling Cavity.....................................................................................111

9.10 Installing an RRU Power Cable....................................................................................................................112

9.11 Installing a CPRI Fiber Optic Cable.............................................................................................................114

9.12 Closing the Cover Plate of an RRU Cabling Cavity....................................................................................116

10 Checking the RRU Hardware Installation..........................................................................120

11 Powering On an RRU.............................................................................................................121

12 Appendix...................................................................................................................................123

12.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side..........124

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1 Changes in the RRU3260 Installation Guide

This chapter describes the changes in the RRU3260 Installation Guide.

01 (2013-03-18)

This is the first official release.

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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

All tools and instruments required for RRU installation must be ready 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:

lDBS3900 Installation Guide

lOCB User Guide

2.2 Tools and Instruments

All tools and instruments required for RRU installation must be ready before the installation.

Hammer drill (a φ 12 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

Utility knife Cable cutter Adjustable wrench (capacity

≥ 32 mm [1.26 in.])

Torque wrench

Capacity: 16 mm [0.63 in.],

and 32 mm [1.26 in.]

Combination wrench

Capacity: 16 mm [0.63 in.],

and 32 mm [1.26 in.]

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Level Torque screwdriver

5 mm (0.2 in.)

(M3 to M6)

Torque socket

Multimeter Marker (diameter ≤ 10 mm

[0.39 in.])

Measuring tape

Inner hexagon spanner

5 mm (0.2 in.)

Fixed pulley Rope

Hydraulic pliers - -

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:

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

proper installation and operation methods.

lThe 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, 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

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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 3-3 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 RRU ports and indicators on the panels

Item Silkscreen Description

(1) Ports in the cabling

cavity

RTN(+) Power port

NEG(-)

CPRI0 Optical/electrical port 0

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Item Silkscreen Description

CPRI1 Optical/electrical port 1

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

transmission

ANT_RXC RX port C

ANT_RXD RX port D

ANT_TX/RXB TX/RX port B

EXT_ALM Alarm port

RET Communication port for the RET antenna,

supporting RET signal transmission

(3) Indicators RUN For details, see 3.3 RRU Indicators.

ALM

ACT

VSWR

CPRI0

CPRI1

Table 3-2 describes how to use RF ports.

Table 3-2 Usage of RF ports

Product Version TX/RX

Channe

Number

of Used

RF Ports

Usage Remarks

lDBS3900

V100R004C00

lDBS3900

WCDMA

V200R013C00

1x2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

lDBS3900

V100R007C00

and later versions

lDBS3900

WCDMA

V200R014C00

and later versions

1x1T2R 2 Recommended: ANT_TX/

RXA and ANT_RXC are

used together.

Optional: ANT_TX/RXB

and ANT_RXD are used

together.

A single

sector

1x2T2R 2 ANT_TX/RXA and

ANT_TX/RXB are used

together.

A single

sector

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Product Version TX/RX

Channe

Number

of Used

RF Ports

Usage Remarks

1x2T4R 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

2x1T2R 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

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

V100R004C00, or DBS3900 WCDMA V200R013C00.

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

DBS3900 WCDMA V200R013C00

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

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

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Figure 3-5 Recommended usage of RF ports on an RRU used for DBS3900 V100R007C00 and

later versions, or DBS3900 WCDMA V200R014C00 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.

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Table 3-3 RRU indicators

Indicator Color Status Meaning

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

faulty.

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 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.

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Indicator Color Status Meaning

Steady off The optical module cannot be detected, or the

optical module is powered off.

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.

3.4 Installation Scenarios

An RRU can be installed on a pole, U-steel, angle steel, 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:

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

lThe RRU cannot be installed in an enclosed camouflage box.

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

lWhen 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

Clearance for Multiple RRUs and 3.5.3 Installation Spacing Between RRUs.

CAUTION

In improper installation scenarios, the heat dissipation efficiency decreases and therefore the

RRU may not work properly. Figure 3-6 shows an improper installation scenario.

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Figure 3-6 Improper installation scenario

Method of installation:

lTo ensure proper heat dissipation and waterproofing of the RRU, the RRU must be installed

with the ports at the bottom and the vertical deviation angle of the RRU must be less than

or equal to 10 degrees, as shown in Figure 3-7.

lThe side-mounted mode 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)

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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

CAUTION

lThe 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.).

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

Figure 3-11, Figure 3-12, and Figure 3-14 show three or more RRUs installed on a pole.

Figure 3-11 Three RRUs installed on a pole

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Figure 3-12 Four RRUs installed on a pole

Figure 3-13 Four RRUs installed on a pole

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Figure 3-14 Six RRUs installed on a pole

Figure 3-15 Six RRUs installed on a pole

Installing an RRU on U-steel

Figure 3-16 shows U-steel specifications.

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Figure 3-16 U-steel specifications

CAUTION

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

Figure 3-17 shows an RRU installed on U-steel.

Figure 3-17 RRU installed on U-steel

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Figure 3-18 RRU installed on U-steel

Installing an RRU on Angle Steel

Figure 3-19 shows angle steel specifications.

Figure 3-19 Angle steel specifications

CAUTION

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

Figure 3-20 shows an RRU installed on angle steel.

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Figure 3-20 RRU installed on angle steel

Figure 3-21 RRU installed on angle steel

Installing an RRU on a Wall

The wall for installing RRUs must meet the following requirements:

lWhen a single RRU is installed, the wall has a capacity of bearing at least four times the

weight of the RRU.

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

secured without damaging the wall.

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CAUTION

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

lWhen multiple RRUs are installed on an outdoor wall in side-mounted mode, it is

recommended that the mounting brackets not be combined, as shown in Figure 3-22. When

multiple RRUs are installed on an indoor wall in side-mounted mode, the mounting brackets

cannot be combined, as shown in Figure 3-23.

Figure 3-22 Correct installation of mounting brackets for multiple RRUs installed on an outdoor

wall in side-mounted mode

Figure 3-23 Correct installation of mounting brackets for multiple RRUs installed on an indoor

wall in side-mounted mode

Figure 3-24 shows an RRU installed on a wall.

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Figure 3-24 RRU installed on a wall

Figure 3-25 RRU installed on a wall

Installing an RRU on an IFS06

In an IFS06 scenario:

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

heights of RRUs.

lThe 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

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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.

CAUTION

The mounting brackets for multiple RRUs cannot be combined when the RRUs are installed on

an IFS06, as shown in Figure 3-26.

Figure 3-26 Correct installation of mounting brackets for RRUs installed on an IFS06

Figure 3-27 and Figure 3-28 show RRUs installed on an IFS06.

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Figure 3-27 Three RRUs installed on an IFS06

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

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Figure 3-28 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.

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NOTE

lThe 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.

lThe 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.

Clearances for a Single RRU in Standard or Reverse Mode

Figure 3-29 shows the clearances for a single RRU in standard or reverse mode.

Figure 3-29 Clearances for a single RRU in standard or reverse mode

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Clearances for a Single RRU in Side-Mounted Mode

Figure 3-30 shows the clearances for a single RRU in side-mounted mode.

Figure 3-30 Clearances for a single RRU in side-mounted mode

Clearances for a Single Tower-mounted RRU

Figure 3-31 and Figure 3-32 show the clearances for a single tower-mounted RRU in standard

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

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Figure 3-31 Minimum clearance for a single tower-mounted RRU in standard or reverse mode

Figure 3-32 Minimum clearance for a single tower-mounted RRU in side-mounted mode

3.5.2 Clearance for Multiple RRUs

This section describes the recommended and minimum clearance for multiple RRUs.

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NOTE

lThe 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.

lThe 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.

Recommended Clearance for Multiple RRUs Installed in Centralized Mode

Figure 3-33 shows the recommended clearance for multiple RRUs installed in centralized mode.

Figure 3-33 Recommended clearances for three or more RRUs installed on a pole

Minimum Clearance for Multiple RRUs Installed in Centralized Mode

Figure 3-34 shows the minimum clearance for multiple RRUs installed in centralized mode.

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Figure 3-34 Minimum clearances for three or more RRUs installed on a pole

Recommended Clearance for Multiple RRUs Installed on a Wall in Standard Mode

Figure 3-35 shows the recommended clearance for multiple RRUs installed on a wall in standard

mode.

Figure 3-35 Recommended clearances for three or more RRUs installed on a wall in standard

mode

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Minimum Clearance for Multiple RRUs Installed on a Wall in Standard Mode

Figure 3-36 shows the minimum clearance for multiple RRUs installed on a wall in standard

mode.

Figure 3-36 Minimum clearances for three or more RRUs installed on a wall in standard mode

Recommended Clearance for Multiple RRUs Side-Mounted on a Wall

Figure 3-37 shows the recommended clearance for multiple RRUs side-mounted on a wall.

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Figure 3-37 Recommended clearances for three or more RRUs installed on a wall in side-

mounted mode

3.5.3 Installation Spacing Between RRUs

This section describes the horizontal and vertical spacing between RRUs.

Recommended Horizontal Spacing Between RRUs

Figure 3-38 shows the recommended horizontal spacing between RRUs.

Figure 3-38 Recommended horizontal spacing between RRUs

Minimum Horizontal Spacing Between RRUs

Figure 3-39 shows the minimum horizontal spacing between RRUs.

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Figure 3-39 Minimum horizontal spacing between RRUs

Recommended Vertical Spacing Between RRUs

Figure 3-40 shows the recommended vertical spacing between RRUs.

Figure 3-40 Recommended vertical spacing between RRUs

Minimum Vertical Spacing Between RRUs

Figure 3-41 shows the minimum vertical spacing between RRUs.

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Figure 3-41 Minimum vertical spacing between RRUs

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4 Unpacking the Equipment

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

materials are included and intact.

Context

NOTE

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

lEnsure that they are transported in the delivered packages instead of being unpacked or in non-

standard packages. If boards are used for a trial and then transported to sites, pack the boards again

before transportation.

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

lWear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweat-

soaked gloves, or dirty gloves.

CAUTION

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

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

Procedure

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

If ... Then ...

The total number tallies with the packing

list

Go to Step 2.

The total number does not tally with the

packing list

Find out the cause and report any missing

articles to the local Huawei office.

Step 2 Check the exterior of the packing case.

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If ... Then ...

The outer packing is intact Go to Step 3.

The outer packing is severely damaged or

soaked

Find out the cause and report it to the local

Huawei office.

The shockwatch label is red Stop unpacking the wooden crate, and then

report it to the transportation company.

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

If ... Then ...

Types and quantity of the article tally with

those on the packing list

Sign the Packing List with the customer.

Either shipment shortage, wrong shipment

or damaged articles.

Report to the local Huawei office.

WARNING

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.

----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

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

Context

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

Procedure

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

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

Figure 6-1 Removing the metal sheet

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(1) Screw (2) Metal sheet

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

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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

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 scenario, 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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7.1 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 scenario, the RRU can be installed on a pole, U-steel, or angle

steel.

Prerequisites

When the RRU is used with an AC/DC power module, you need to install the AC/DC power

module onto the RRU before hoisting the RRU onto a tower. For details about how to install an

AC/DC power module onto the RRU, see Installing an AC/DC Power Module onto an RRU.

CAUTION

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

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

during the installation.

Procedure

Step 1 Hoist the RRU and mounting kits onto the tower respectively, as shown in Figure 7-1.

NOTE

Hoist mounting kits onto the tower and then install the mounting kits before hoisting the RRU onto the

tower. When hoisting the mounting kits and RRU, protect them from colliding with the tower.

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Figure 7-1 Hoisting the RRU onto the tower

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

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 C binds the RRU mounting kits properly using a lifting sling, as shown

in Figure 7-2, and binds the RRU using a lifting sling and a traction sling, as shown in

Figure 7-3.

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Figure 7-2 Binding mounting kits for the RRU

Figure 7-3 Binding the RRU

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

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CAUTION

lThe 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.).

lWhen hoisting the RRU onto a tower, protect them from colliding with the tower and

ground.

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

lDo not hoist any thing by the traction eye.

lDo not hoist the RRU by the handle or traction eye only, as shown in Figure 7-4 and

Figure 7-5.

Figure 7-4 Incorrect binding method

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Figure 7-5 Incorrect binding method

3. Installation engineer B pulls the lifting sling downwards, and installation engineer C pulls

the traction sling outwards to protect the RRU from colliding with the tower.

Step 2 Installation engineer A catches the RRU, install the RRU on the main bracket, use an inner

hexagon screwdriver to tighten the captive screw into the hole of the attachment plate to 5 N·m

(44.25 lbf·in.) for connecting the attachment plate and the main bracket, see 8 Installing the

RRU.

Step 3 Remove the lifting sling and traction sling.

NOTE

The procedure for hoisting the RRU and 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

CAUTION

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

CAUTION

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.

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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.

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

7.3 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.

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Figure 7-9 Hoisting power cables onto the tower

(1) Lifting sling (2) Fixed pulley

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.

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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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8 Installing the RRU

About This Chapter

This chapter describes the procedure for installing the RRU. The RRU can be installed on a pole,

U-steel, angle steel, wall, or an IFS06 . The procedure for installing the RRU varies depending

on installation options.

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 rear of an RRU.

Figure 8-1 Front and side view of an RRU

(1) Attachment plate

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

Figure 8-2 12 L blade RRU mounting kit

(1) Main bracket (2) Pole installation

bracket

(3) Auxiliary bracket (4) Nut (5) Square-neck

bolt

(6) Hoist clamp on

the main bracket

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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.

CAUTION

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

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

during the installation.

Procedure

Step 1 Determine a position for installing the mounting brackets.

lIf 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.

lIf the pole must be installed on the ground, determine a position for installing the mounting

brackets according to Figure 8-3.

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

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NOTE

It is recommended that the mounting brackets be installed at a height of 1200 mm (47.24 in.) to 1600

mm (62.99 in.) above the ground.

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.

CAUTION

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.

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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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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.

CAUTION

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

lPlace 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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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.

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CAUTION

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

facing downwards.

Figure 8-10 Installing the second main bracket

(1) Removed main bracket

Step 4 Install the second RRU onto the main bracket, as shown in Figure 8-11.

Figure 8-11 Installing the second RRU onto the main bracket

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CAUTION

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 8-12.

Figure 8-12 Securing the captive screw into the connection hole

Step 5 Install the metal sheet for neighboring RRUs, as shown in Figure 8-13.

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Figure 8-13 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.

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 second RRU.

3. Insert the removed screw into the hole on the top of the second 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.

CAUTION

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

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

during the installation.

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Context

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.

Procedure

Step 1 Install the two RRUs, as shown in Figure 8-14. For details, see 8.2.2 Installing Two RRUs.

Figure 8-14 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 8-15.

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Figure 8-15 Removing the RRU main bracket

(1) Main bracket (2) Pole installation bracket

Step 3 Install the third main bracket and install the third RRU onto the third main bracket. Then use 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 8-16.

CAUTION

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

facing downwards.

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Figure 8-16 Installing the third RRU onto the third main bracket

Step 4 Install the metal sheet for neighboring RRUs, as shown in Figure 8-17.

Figure 8-17 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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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 second RRU.

3. Insert the removed screw into the hole on the top of the second RRU and use an M6 torque

screwdriver to tighten the screw to 5 N·m (44.25 lbf·in.).

Step 5 At a position 80 mm (3.15 in.) above or below the first set of RRU mounting brackets, install

the second set of RRU mounting brackets, as shown in Figure 8-18.

Figure 8-18 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 8-19.

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Figure 8-19 Installing the fourth RRU onto the fourth main bracket

----End

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.

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.

CAUTION

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

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

during the installation.

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Context

Figure 8-20 shows the top view of the RRU installed on U-steel.

CAUTION

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 8-20 Top view of the RRU

(1) U-steel

Procedure

Step 1 Determine a position for installing the mounting brackets.

lIf 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.

lIf the RRU must be installed on U-steel secured on the ground, see Figure 8-21 to determine

a position.

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Figure 8-21 Distance between the mounting brackets and the ground

NOTE

It is recommended that the mounting brackets be installed at a height of 1200 mm (47.24 in.) to 1600

mm (62.99 in.) above the ground.

Step 2 Install the RRU mounting brackets, as shown in Figure 8-22.

Figure 8-22 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.

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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 that

the mounting brackets are secured onto the U-steel, as shown in Figure 8-23.

CAUTION

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 8-23 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 8-24.

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Figure 8-24 Installing the attachment plate onto the rear of the RRU

Step 5 Install the RRU onto the main bracket, as shown in Figure 8-25.

Figure 8-25 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 8-26.

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Figure 8-26 Securing the captive screw into the connection hole

----End

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.

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.

CAUTION

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

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

during the installation.

Context

Figure 8-27 shows the top view of the RRU installed on angle steel.

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Figure 8-27 Top view of the RRU

(1) Angle steel

Procedure

Step 1 Determine a position for installing the mounting brackets.

lIf 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.

lIf the RRU must be installed on angle steel secured on the ground, see Figure 8-28 to

determine a position.

Figure 8-28 Distance between the mounting brackets and the ground

NOTE

It is recommended that the mounting brackets be installed at a height of 1200 mm (47.24 in.) to 1600

mm (62.99 in.) above the ground.

Step 2 Install the RRU mounting brackets, as shown in Figure 8-29.

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Figure 8-29 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.

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 angle steel, as shown in Figure 8-30.

CAUTION

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.

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Figure 8-30 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 8-31.

Figure 8-31 Installing the attachment plate onto the rear of the RRU

Step 5 Install the RRU onto the main bracket, as shown in Figure 8-32.

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Figure 8-32 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 8-33.

Figure 8-33 Securing the captive screw into the connection hole

----End

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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.

CAUTION

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

lPlace 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:

lWhen a single RRU is installed, the wall must be capable of bearing at least four times the

weight of the RRU.

lExpansion 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 8-34.

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Figure 8-34 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 8-35.

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Figure 8-35 Marking anchor points

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

NOTE

It is recommended that the pole installation bracket be installed at a height of 1200 mm (47.24 in.) to 1600

mm (62.99 in.) above the ground.

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

Figure 8-36.

Figure 8-36 Drilling a hole and inserting expansion anchor bolt assemblies

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

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1. Use a hammer drill with a Ф12 bit to drill holes vertically at the marked anchor points.

Ensure that the depth of each hole ranges from 55 mm (2.17 in.) to 60 mm (2.36 in.).

CAUTION

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.

CAUTION

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 8-37.

Figure 8-37 Installing the pole installation bracket on the expansion anchor bolts

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CAUTION

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

Step 5 Install the main bracket onto the pole installation bracket, and use an inner hexagon 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 8-38.

Figure 8-38 Installing the main bracket

(1) Main bracket (2) Pole installation 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 8-39.

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Figure 8-39 Installing the attachment plate onto the rear of the RRU

Step 7 Install the RRU onto the main bracket, as shown in Figure 8-40.

Figure 8-40 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 8-41.

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Figure 8-41 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.

CAUTION

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

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

during the installation.

Context

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

heights of RRUs.

lRRUs 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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NOTE

For details about the operating temperature of the RRU, see section "Technical Specifications of

RRUs" in 3900 Series Base Station Technical Description.

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

lThis 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.

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

with the IFS06.

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

Procedure

Step 1 Disassemble the RRU mounting brackets, as shown in Figure 8-42.

Figure 8-42 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 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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CAUTION

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

lHeight-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 8-43.

Figure 8-43 Installing the pole installation bracket in height-restricted scenarios

(1) Spring washer (2) Rubber washer

lHeight-unrestricted scenarios

Install the pole installation bracket, as shown in Figure 8-44.

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Figure 8-44 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 8-45.

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Figure 8-45 Installing the main bracket

(1) Main bracket (2) Pole installation bracket

Step 4 Attach the RRU to the main bracket, and then use an inner hexagon 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 8-46.

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Figure 8-46 Installing the RRU onto the main bracket

Step 5 Install the RRUs on the lower level from left to right, as shown in Figure 8-47.

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Figure 8-47 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 8-48.

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Figure 8-48 Installing RRUs on the higher level

----End

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9 Installing RRU Cables

About This Chapter

This chapter describes the procedure for installing RRU cables.

9.1 Cabling Requirements

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

interference.

NOTE

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

General Cabling Requirements

Requirements for Bending Radius

lThe bending radius of the 7/8'' feeder must be more than 250 mm (9.84 in.), and the bending

radius of the 5/4'' feeder must be more than 380 mm (14.96 in.).

lThe bending radius of the 1/4'' jumper must be more than 35 mm (1.38 in.). The bending

radius of the super-flexible 1/2'' jumper must be more than 50 mm (1.97 in.), and the bending

radius of the ordinary 1/2'' jumper must be more than 127 mm (5 in.).

lThe bending radius of the power cable or PGND cable must be at least three times the

diameter of the cable.

lThe bending radius of a fiber optic cable is at least 20 times the diameter of the fiber optic

cable, and the minimum bending radius of the breakout cable at each end of the fiber optic

cable is 30 mm (1.18 in.).

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

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

Requirements for Cable Binding

lThe same types of cable must be bound together.

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

(1.18 in.) and cannot be entangled.

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

lCable ties are installed in the same direction, and those at the same horizontal line must be

in a straight line.

lThe excess of indoor cable ties is trimmed off, and the excess of outdoor cable ties allows

about 5 mm (0.2 in.), without remaining rough edges.

lLabels or nameplates must be attached to both ends, joints, or turns of cables after they are

installed.

Security Requirements

lCables should be placed away from sharp objects or wall burrs. If these positions are

inevitable, protect the cables with protection pipes.

lCables must be routed away from heat sources, or heat-insulation materials are added

between cables and heat sources.

lSufficient slack (recommended for about 0.1 m [0.33 ft]) is provided in cables at turns or

the position close to a device, facilitating cable and device maintenance.

Indoor Cabling Requirements

lCables are routed indoors through the feeder window.

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lDrip loops must be made outside the feeder window, and the requirements for the minimum

bending radius are met.

lWhen cables are routed indoors, engineers are required indoors for cooperation.

lThe feeder window must be waterproofed.

Outdoor Cabling Requirements

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

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

lIf cables at the cabinet bottom need to be routed through a pipe along the ground, lead the

pipe into the cabinet base for about 30 mm (1.18 in.) to 50 mm (1.97 in.), not into the

cabinet. Block the pipe with waterproof tape or silicon gel, and secure the pipe to the cable

hole at the cabinet bottom with metal piece.

lIf cables at the cabinet bottom need to be routed through a pipe along the metal cable trough,

do not lead the pipe into the cabinet base. The cable trough must be sealed and routed

through the cable hole at the cabinet bottom.

lCables are secured with cable clips.

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

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

7/8" feeder are installed at the spacing of 1.5 m (4.92 ft) to 2 m (6.56 ft) in the same direction,

and the cable clips for the power cables are installed at the spacing of 1.5 m (4.92 ft) to 2

m (6.56 ft) in the same direction.

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

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

Secure cables on the cable tray, as shown in Figure 9-1.

Figure 9-1 Securing cables on the cable tray

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Secure cables on the tower, as shown in Figure 9-2.

Figure 9-2 Securing cables on the tower

Special Cabling Requirements

Cabling Requirements for Power Cables

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

lIf the length of power cables is insufficient, replace the cables rather than adding connectors

or soldering joints to lengthen the cables.

lCables must be routed by only qualified and trained personnel before all preparations are

made.

lCables are routed in an untangled and orderly fashion.

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lIf DC power cables need to be routed on the tower platform, lay out the cables on the

guardrail with the shortest distance and route the cables along the guardrail.

lIf DC power cables need to be routed close to a device on the tower, secure the cables to

the guardrail or pole with cable clips. The device cannot be far away from the position for

securing the cables.

Cabling Requirements for PGND Cables

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

lPGND cables must be buried in the ground or routed indoors. They should not be routed

overhead before they are led into the equipment room.

lThe exterior of the coaxial wire and the shield layer of the shielded cable must have proper

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

lPGND cables and signal cables must be installed in an untangled and orderly fashion. A

certain distance must be reserved between them to prevent interference from each other.

lFuses or switches must not be installed on the PGND cables.

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

lAll the metal parts in the housing of the equipment must be reliably connected to the ground

terminal.

Cabling Requirements for E1 Cables

lE1 cables must not cross power cables, PGND cables, or RF cables when routed. If

transmission cables are routed with power cables, PGND cables, or RF cables in parallel,

the spacing between them must be greater than 30 mm (1.18 in.).

lE1 cables are routed straightly and bound neatly with cable ties.

lSufficient slack is provided in E1 cables at turns.

lE1 cables cannot be squeezed by the cabinet door when routed through the cabinet, as

shown in Figure 9-3.

Figure 9-3 E1 cables routed through the cabinet

Cabling Requirements for Fiber Optic Cables

lFiber optic cables must be routed by at least three qualified and trained personnel before

all preparations are made.

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lFiber optic cables are used within the temperature range of -40°C to 60°C. If the current

temperature is out of the range, make protection measures or route the cables again.

lCables are routed in an untangled and orderly fashion.

lDo not bind fiber optic cables at turns.

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

from sharp objects.

lWhen fiber optic cables are routed, the excess of the cables must be coiled around special

devices, such as a fiber coiler.

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

lVacant optical connectors must be covered with dustproof caps.

lFiber optic cables cannot be squeezed by the cabinet door when routed through the cabinet,

as shown in Figure 9-4, Figure 9-5 and Figure 9-6.

Figure 9-4 CPRI fiber optic cables routed through the cabinet (1)

Figure 9-5 CPRI fiber optic cables routed through the cabinet (2)

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Figure 9-6 FE/GE cables routed through the cabinet

lIf fiber optic cables need to be routed on the tower platform, lay out the cables on the

guardrail with the shortest distance and route the cables along the guardrail.

lIf fiber optic cables need to be routed close to a device on the tower, secure the cables to

the guardrail or pole with cable clips. The device cannot be far away from the position for

securing the cables.

lIf the fiber optic cables close to a device are too long, coil the excess of the cables and

secure them on the tower.

9.2 Cable Connections

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

NOTE

lA lower-level RRU obtains power directly from the external power system, but not from an upper-

level RRU using a power cable.

Figure 9-7 shows the cable connections for a single RRU.

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Figure 9-7 Cable connections for a single RRU

(1) PGND cable (2) RRU RF jumper (3) RRU AISG multi-wire cable

(4) RRU AISG extension cable (5) RRU power cable (6) CPRI fiber optic cable

(7) RRU alarm cable - -

Figure 9-8 shows the cable connections for multiple RRUs.

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Figure 9-8 Cable connections for multiple RRUs

(1) PGND cable (2) RRU RF jumper (3) RRU power cable

(4) CPRI fiber optic cable - -

9.3 Installation Process

This section describes the process of installing RRU cables.

Figure 9-9 shows the process of installing RRU cables.

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Figure 9-9 Process of installing RRU cables

9.4 RRU Cable List

This section describes RRU cable connections.

Table 9-1 lists RRU cables.

Table 9-1 RRU cables

Cable One End The Other End

Connector Installation

Position

Connector Installation

Position

RRU PGND

Cable

OT terminal (16

mm2 or 0.025 in.

2, M6)

Ground

terminal on the

RRU

OT terminal (16

mm2 or 0.025 in.

2, M8)

Ground terminal

on the ground bar

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101

Cable One End The Other End

Connector Installation

Position

Connector Installation

Position

RRU Power

Cable

Tool-less female

connector

(pressfit type)

NEG(-) and

RTN(+) ports

on the RRU

Tool-less female

connector

(pressfit type)

One of RRU0 to

RRU5 ports on

the EPU or EPS

One of LOAD0 to

LOAD5 ports on

the DCDU-11B

OT terminal (3.3

mm2 or 0.005 in.

2, 5.3 mm2 or

0.0082 in.2, M4),

complying with

North American

standards

OT terminal (4

mm2 or 0.006 in.

2, 6 mm2 or

0.0093 in.2, M4),

complying with

European

standards

One of LOAD0 to

LOAD5 ports on

the DCDU-03B

RRU Alarm

Cable

DB15 waterproof

male connector

EXT_ALM

port on the

RRU

Cord end

terminal

External alarm

device

CPRI Fiber

Optic Cable

DLC connector CPRI0 port on

the RRU

DLC connector CPRI port on the

WBBP in the

BBU

CPRI1 port on

the RRU

CPRI0 port on the

RRU

RRU RF

Jumper

DIN male

connector

ANT_TX/

RXA or

ANT_TX/

RXB port on

the RRU

DIN male

connector

Antenna system

RRU AISG

Multi-Wire

Cable

DB9

waterproofed

male connector

RET port on

the RRU

Standard AISG

female connector

Standard AISG

male connector

on the RCU or on

the AISG

extension cable

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Cable One End The Other End

Connector Installation

Position

Connector Installation

Position

RRU AISG

Extension

Cable

Standard AISG

male connector

Standard AISG

female

connector on

the AISG

multi-wire

cable

Standard AISG

female connector

Standard AISG

male connector

on the RCU

9.5 Installing an RRU PGND Cable

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

Context

The cross-sectional area of an RRU PGND cable is 16 mm2 (0.025 in.2). The cable has an M6

OT terminal at one end and an M8 terminal at the other end.

Procedure

Step 1 According to the actual cable route, cut the PGND cable into a proper length to prepare an RRU

PGND cable. Then add an OT terminal at each end of the cable according to the instructions in

Assembling the OT Terminal and the Power Cable.

Step 2 Install the RRU PGND cable.

Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at the RRU

bottom and the M8 OT terminal at the other end to the external ground bar, as shown in Figure

9-10.

Figure 9-10 Installing an RRU PGND cable

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NOTE

Crimp OT terminals in correct positions, as shown in Figure 9-11.

Figure 9-11 Correct position of an OT terminal

Step 3 Label the installed cables according to the instructions in Attaching a Cable-Tying Label.

----End

9.6 Installing an RRU RF Jumper

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

Procedure

Step 1 Connect the DIN male connector at one end of the RRU RF jumper to the ANT port on the RRU,

and use a torque wrench to tighten the connector to 25 N·m (221.27 lbf·in.), as shown in Figure

9-12.

Figure 9-12 Installing an RRU RF jumper

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CAUTION

On AC-powered electric railways, such as high speed railways, when leaky cables are connected

to RRUs installed in tunnels, high-voltage-resistance DC blocks must be installed between RRU

RF jumpers and the leaky cables to protect the RRUs against damage.

Step 2 Link the other end of the RF jumper to the external antenna system.

Step 3 Waterproof the connectors of the RF jumper by referring to Figure 9-13.

Figure 9-13 Waterproofing a connector of the RF jumper

(1) Waterproof tape (2) PVC insulation tape

NOTE

lBefore wrapping waterproof tape, stretch the tape evenly until the length of the tape becomes twice its

original length.

lDo not stretch the PVC insulation tape when wrapping the PVC insulation tape.

lWrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlaps

more than 50% of the preceding layer. Ensure that neighboring layers are stuck to each other.

lEnsure that the adhesive surface of the tape overlaps the lower layer.

lWhen cutting off the cable ties, reserve a redundant length of 3 mm (0.12 in.) to 5 mm (0.2 in.).

1. Wrap three layers of waterproof tape on the connector, first from bottom up, then from top

down, and finally from bottom up. Start wrapping the connector at a position 50 mm (1.97

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in.) away below the bottom of the connector to the top of the connector, first from bottom

up, then from top down, and finally from bottom up. Cut off the redundant tape after three

layers are wrapped. Wrap each layer of tape around the connector tightly.

2. Wrap three layers of PVC insulation tape. Start the wrapping at a position 30 mm (1.18 in.)

away below the bottom of the waterproof tape to the top of the connector, first from bottom

up, then from top down, and finally from bottom up. Cut off the redundant tape after three

layers are wrapped. Wrap each layer of tape around the connector tightly.

3. Start binding cable ties to the cable at a position 3 mm (0.12 in.) to 5 mm (0.2 in.) away

from one end of the PVC insulation tape.

Step 4 Check the dustproof caps on antenna connectors. In outdoor scenarios, dustproof caps must be

waterproofed, as shown in Figure 9-14.

CAUTION

Do not remove dustproof caps from vacant antenna connectors.

Figure 9-14 Waterproofing a dustproof cap

(1) Dustproof cap (2) Waterproof tape (3) PVC insulation tape

NOTE

lBefore wrapping waterproof tape, stretch the tape evenly until the length of the tape becomes twice its

original length.

lDo not stretch the PVC insulation tape when wrapping the PVC insulation tape.

lWrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlaps

more than 50% of the preceding layer. Ensure that neighboring layers are stuck to each other.

lEnsure that the adhesive surface of the tape overlaps the lower layer.

lWhen cutting off the cable ties, reserve a redundant length of 3 mm (0.12 in.) to 5 mm (0.2 in.).

1. Verify that dustproof caps are not removed.

2. Wrap three layers of waterproof tape on the connector, first from bottom up, then from top

down, and finally from bottom up. Wrap each connector with three layers of waterproof

tape, from bottom up, then from top down, and finally from bottom up. Do not cut the tape

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until all the three layers of the tape are already wrapped. Cut off the redundant tape after

three layers are wrapped. Wrap each layer of tape around the connector tightly.

3. Wrap three layers of PVC insulation tape. Wrap each connector with three layers of

waterproof tape, from bottom up, then from top down, and finally from bottom up. Do not

cut the tape until all the three layers of the tape are already wrapped. Cut off the redundant

tape after three layers are wrapped. Wrap each layer of tape around the connector tightly.

4. Start binding cable ties to the cable at a position 3 mm (0.12 in.) to 5 mm (0.2 in.) away

from one end of the PVC insulation tape.

Step 5 Route the cables according to the instructions in 9.1 Cabling Requirements, and then use cable

ties to bind the cables.

Step 6 Label the installed cables according to the instructions in Attaching a Sign Plate Label.

Step 7 Attach color-coding to the installed RF jumper according to the instructions in Attaching the

Color Ring.

----End

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.

Context

When the distance between an RRU and a Remote Control Unit (RCU) is longer than 5 m (16.4

ft.), an AISG multi-wire cable is not long enough to connect the RRU and the RCU. In this case,

an AISG extension cable is used to extend the AISG multi-wire cable.

Procedure

lInstall an AISG multi-wire cable that is not configured with an AISG extension cable.

1. Use an M3 flat-head screwdriver to loosen the screws on the dustproof cap on the RET

port and remove the dustproof cap.

2. Link the waterproofed DB9 connector at one end the AISG multi-wire cable to the

RET port on the RRU bottom, as shown in Figure 9-15.

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Figure 9-15 Installing an RRU AISG multi-wire cable

3. Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof

DB9 connector to 0.4 N·m (3.54 lbf·in.).

4. Connect the other end of the cable to the standard AISG male connector on the RCU.

5. Route the cables according to the instructions in 9.1 Cabling Requirements, and then

use cable ties to bind the cables.

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

Label.

lInstall an AISG multi-wire cable that is configured with an AISG extension cable.

1. Use an M3 flat-head screwdriver to loosen the screws on the dustproof cap on the RET

port and remove the dustproof cap.

2. Link the waterproofed DB9 connector at one end of the AISG multi-wire cable to the

RET port on the RRU bottom, and link the other end to the standard AISG male

connector of the AISG extension cable, as shown in Figure 9-16.

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Figure 9-16 Installing an RRU AISG multi-wire cable

3. Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof

DB9 connector to 0.4 N·m (3.54 lbf·in.).

4. Connect the other end of the AISG extension cable to the standard AISG male

connector on the RCU, as shown in Figure 9-17.

Figure 9-17 Installing an RRU AISG extension cable

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5. Route the cables according to the instructions in 9.1 Cabling Requirements, and then

use cable ties to bind the cables.

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

Label.

----End

9.8 Installing an RRU Alarm Cable

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

Procedure

Step 1 Use an M3 Phillips screwdriver to loosen the screws on the dustproof cap on the EXT_ALM

port and remove the dustproof cap.

Step 2 Connect the waterproof DB15 connector at one end of the RRU alarm cable to the EXT_ALM

port on the RRU, and connect the eight cord end terminals at the other end to external alarm

devices, as shown in Figure 9-18.

Figure 9-18 Installing an RRU alarm cable

Step 3 Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof DB15 male

connector to 0.4 N·m (3.54 lbf·in.).

Step 4 Route the cables according to the instructions in 9.1 Cabling Requirements, and then use cable

ties to bind the cables.

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Step 5 Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

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.

Procedure

Step 1 Wear ESD gloves.

CAUTION

Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic

damage to the boards, modules, or electronic components.

Step 2 Use an M5 Phillips screwdriver to loosen the three screws on the cover plate of the RRU cabling

cavity, and open the cover plate, as shown in Figure 9-19.

Figure 9-19 Opening the cover plate of the RRU cabling cavity

(1) Cover plate (2) Cabling cavity (3) Clip

(4) Cable trough for the power cable (5) Waterproof block (6) Cable trough for the fiber optic cable

Step 3 Loosen the screws on the clip, and open the clip, as shown Figure 9-20.

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NOTE

Open the clip only for the associated cable.

Figure 9-20 Opening clips

Step 4 Remove the waterproof block.

NOTE

Remove only the waterproof blocks for the cables to be installed.

----End

9.10 Installing an RRU Power Cable

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

Prerequisites

lAn easy power receptacle (pressfit type) connector is added to the RRU power cable on

the RRU side. For details, see 12.1 Adding a Tool-Less Female Connector (Pressfit

Type) to the RRU Power Cable on the RRU Side.

lAdd a connector or OT terminals to the RRU power cable on the power device side. For

details, see the DBS3900 Installation Guide.

Context

There are four types of RRU power cables in terms of cross-sectional areas: 3.3 mm2 (0.005 in.

2) (12 AWG) and 5.3 mm2 (0.0082 in.2) (10 AWG) complying with North American standards,

4 mm2 (0.006 in.2) and 6 mm2 (0.0093 in.2) complying with European standards.

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Table 9-2 describes the power cable connections.

Table 9-2 Power cable connections

Cabl

Powe

Devic

One End The Other End Re

mar

Connector Instal

latio

Positi

Connector Installation

Position

RRU

power

cable

DCD

U-11

Tool-less female

connector

(pressfit type)

Power

port

on an

RRU

Tool-less female

connector

(pressfit type)

One of the

LOAD0 to

LOAD5 ports

on the

DCDU-11B

Blac

EPU One of the

RRU0 to

RRU5 ports on

the EPU

WARNING

When installing the RRU power cable, connect the RRU power cable first to the RRU and then

to the power device. Operations in the reverse sequence may cause damage to the components

and injury of human bodies.

Procedure

Step 1 Connect the tool-less female connector (pressfit type) at one end of the RRU power cable to the

power supply socket on the RRU, as shown in Figure 9-21.

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Figure 9-21 Installing an RRU power cable

CAUTION

Ensure that the exposed shield layer of the power cable is properly tightened using the clip.

Step 2 Connect the tool-less female connector (pressfit type) at the other end of the RRU power cable

to the corresponding position on the power device.

NOTE

lA DCDU-11B can supply power to a maximum of six RRUs. The RRU power cables are connected

to the LOAD0 to LOAD5 terminals on the DCDU-11B.

lAn EPU can supply power to a maximum of six RRUs. The RRU power cables are connected to the

RRU0 to RRU5 ports on the EPU.

lWhen the RRU power cable is connected to the EPU, the blue core wire in the tool-less female connector

(pressfit type) is connected to the left part of a port on the EPU, and the black/brown core wire is

connected to the right part of the port on the EPU.

Step 3 Route the cables according to the instructions in 9.1 Cabling Requirements, and then use cable

ties to bind the cables.

Step 4 Label the installed cables according to the instructions in Attaching a Cable-Tying Label.

----End

9.11 Installing a CPRI Fiber Optic Cable

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

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Prerequisites

Before the installation, single-mode optical modules can be distinguished from multi-mode

optical modules in either of the following ways:

lSM and MM labels on an optical module: SM indicates a single-mode optical module, and

MM indicates a multi-mode optical module.

lColor of the puller on an optical module: Blue indicates a single-mode optical module, and

black or gray indicates a multi-mode optical module.

CAUTION

The optical modules to be installed must match CPRI rates.

Context

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

lFor details about CPRI fiber optic cable connections, see section "CPRI Cable Connections"

in the BBU3900 Hardware Description or DBS3900 Hardware Description.

Procedure

Step 1 Lower the pullers of two optical modules, insert one optical module into the CPRI0 port on the

RRU and the other optical module into the CPRI port on the BBU, and raise the pullers, as shown

in Figure 9-22.

Figure 9-22 Installing an optical module

CAUTION

The performance of an optical module that is exposed to the air for more than 20 minutes may

be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module

within 20 minutes.

Step 2 Connect the end labeled 1A and 1B of the fiber optic cable to the optical module on the RRU

side, as shown in Figure 9-23.

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Figure 9-23 Installing a CPRI fiber optic cable

CAUTION

lTo avoid any damage to fiber optic cables, the cables connected to the RRU must be installed

according to the installation process. For details about the installation process, see 9.3

Installation Process.

Step 3 Connect the end labeled 2A and 2B of the fiber optic cable to the optical module on the BBU

side.

Step 4 Route the cables according to the instructions in 9.1 Cabling Requirements, and then use cable

ties to bind the cables.

Step 5 Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

9.12 Closing the Cover Plate of an RRU Cabling Cavity

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

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Procedure

Step 1 Close the clips for the installed cables. Use a torque screwdriver to tighten the screws on each

clip to 1.4 N·m (12.39 lbf·in.), as shown in Figure 9-24.

CAUTION

Ensure that the exposed shield layer of the power cable is properly tightened using the clip.

Figure 9-24 Closing clips

Step 2 Insert waterproof blocks into vacant cable troughs in the cabling cavity, as shown in Figure

9-25.

CAUTION

Ensure that cables and waterproof blocks are properly inserted into troughs.

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Figure 9-25 Correct placement of waterproof blocks

Step 3 Close the cover plate of the RRU cabling cavity. Use an M5 torque screwdriver to partially

tighten the screws on the cover plate in the sequence shown in Figure 9-26. Then tighten the

screws to 2 N·m (17.7 lbf·in.) in the same sequence.

Figure 9-26 Closing the cover plate of an RRU cabling cavity

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Step 4 Take off the ESD gloves, and pack up all the tools.

----End

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10 Checking the RRU Hardware

Installation

After an RRU is installed, check the hardware installation.

Table 10-1 provides the checklist for the RRU hardware installation.

Table 10-1 Checklist for the RRU hardware installation

SN Item

1The position for each device conforms to the engineering drawing and meets the

space requirement. Sufficient space is reserved for equipment maintenance.

2 The RRU is securely installed.

3 The cover plate is securely installed on the RRU cabling cavity.

4 Waterproof blocks are securely installed in vacant cable troughs of the RRU cabling

cavity, and the cover plate for the cabling cavity is securely installed. In addition,

vacant RF ports are covered with dustproof caps and the caps are tightened.

5 There are no connectors or joints on each power cable or PGND cable.

6 The terminals at two ends of each power cable or PGND cable are securely soldered

or crimped.

7 None of power cables and PGND cables can be short-circuited or reversely

connected. In addition, these cables are not damaged or broken.

8 Power cables and PGND cables are separately bound from other cables.

9 The protection grounding of the RRU and the surge protection grounding of the

building share one group of ground conductors.

10 The connectors of each signal cable are intact and securely linked, and these cables

are not damaged or broken.

11 Labels are correct, legible, and complete at both ends of each cable, feeder, and

jumper.

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11 Powering On an RRU

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

CAUTION

After you unpack an RRU, you must power on it within 24 hours. If you power off the RRU for

maintenance, you must restore power to the RRU within 24 hours.

Figure 11-1 shows the RRU power-on check process.

NOTE

For details about how to power on an RRU, see Powering On an RRU. For details about how to power off

an RRU, see section "Powering-Off the RRU" in RRU Maintenance Guide.

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Figure 11-1 RRU power-on check process

(a) The normal input voltage of an RRU is -48 V DC. The voltage of the external power supply should range

from -36 V DC to -57 V DC.

(b) The RUN indicator on the RRU is on for 1s and off for 1s. The ALM indicator is steady off.

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12 Appendix

About This Chapter

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

connector.

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

RRU Side

This section describes the procedure for adding a tool-less female connector (pressfit type) to

the RRU power cable on the RRU side.

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12.1 Adding a Tool-Less Female Connector (Pressfit Type)

to the RRU Power Cable on the RRU Side

This section describes the procedure for adding a tool-less female connector (pressfit type) to

the RRU power cable on the RRU side.

Context

Figure 12-1 shows the cable diagram on labels.

Figure 12-1 Cable diagram on labels

(1) Cable diagram on labels

Procedure

Step 1 Determine the length of the power cable for different operations based on the labels, as shown

in Figure 12-2.

Figure 12-2 Determining the length of the power cable

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Step 2 Strip the specified length of the sheath off the power cable, as shown in Figure 12-3.

Figure 12-3 Stripping the specified length of sheath

Step 3 Strip a specified length of sheath off each core wire. The length must be consistent with the

length of the notch in the tool-less female connector (pressfit type), as shown in Figure 12-4.

Figure 12-4 Stripping the sheath off each core wire

Figure 12-5 Matched length

Step 4 Add a tool-less female connector (pressfit type) to two core wires.

1. Tighten the screws using a Phillips screwdriver, as shown in Figure 12-6.

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Figure 12-6 Tightening screws

2. Connect the blue core wire labeled NEG(-) to the - port and the black/brown core wire

labeled RTN(+) to the + port on the tool-less female connector (pressfit type), and then

tighten the screws using a Phillips screwdriver, as shown in Figure 12-7.

Figure 12-7 Adding a tool-less female connector (pressfit type) to two core wires

Step 5 Strip the specified length of the sheath off the power cable to expose the intact shield layer, as

shown in Figure 12-8.

Figure 12-8 Stripping the sheath off the power cable

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CAUTION

Each core wire is exposed outside the tool-less female connector (pressfit type) for 1.5 mm

(0.059 [in.]), as shown in Figure 12-9.

Figure 12-9 Inserting core wires into the tool-less female connector (pressfit type)

----End

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Huawei Technologies RRU3260 Remote Radio Unit User Manual Installation Guide

Huawei Technologies Co.,Ltd Remote Radio Unit Installation Guide

Installation guide of RRU3260

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