Huawei RRU3268 Users 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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RRU3268 Installation Guide About This Document

About This Document

Purpose

This document describes the process of installing a DC RRU3268 (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 RRU3268 Installation Guide

This chapter describes the changes in the RRU3268 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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RRU3268 Installation Guide About This Document

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.

Conventions

9 Installing RRU Cables

This chapter describes the procedure for installing RRU cables.

10 Checking the RRU Hardware Installation

After an RRU is installed, check the hardware installation.

11 Powering On an RRU

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

12 Appendix

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

Symbol Conventions

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

Symbol

Description

Indicates 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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iii

RRU3268 Installation Guide About This Document

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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RRU3268 Installation Guide About This Document

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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RRU3268 Installation Guide Contents

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

1 Changes in the RRU3268 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...................................................................................................5

3 Information About the Installation...........................................................................................6

3.1 RRU Exterior......................................................................................................................................................7

3.2 RRU Ports...........................................................................................................................................................8

3.3 RRU Indicators...................................................................................................................................................9

3.4 Installation Scenarios........................................................................................................................................11

3.5 Installation Clearance Requirements of an RRU..............................................................................................21

3.5.1 Clearance for a Single RRU....................................................................................................................21

3.5.2 Clearance for Multiple RRUs..................................................................................................................24

3.5.3 Installation Spacing Between RRUs........................................................................................................28

4 Unpacking the Equipment.........................................................................................................31

5 Installation Process.....................................................................................................................33

6 (Optional) Installing the Plastic Shells of the RRU..............................................................34

7 Hoisting an RRU and Related Cables onto a Tower............................................................37

7.1 Hoisting an RRU onto a Tower........................................................................................................................38

7.2 Hoisting Fiber Optic Cables onto a Tower.......................................................................................................42

7.3 Hoisting Power Cables onto a Tower...............................................................................................................45

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

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

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

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

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

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

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

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

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RRU3268 Installation Guide Contents

8.5 Installing the RRU on a Wall...........................................................................................................................73

8.6 Installing an RRU on an IFS06.........................................................................................................................79

9 Installing RRU Cables................................................................................................................87

9.1 Cabling Requirements......................................................................................................................................89

9.2 Cable Connections............................................................................................................................................94

9.3 Installation Process...........................................................................................................................................96

9.4 RRU Cable List................................................................................................................................................97

9.5 Installing an RRU PGND Cable.......................................................................................................................99

9.6 Installing an RRU RF Jumper........................................................................................................................100

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

9.8 Installing an RRU Alarm Cable......................................................................................................................106

9.9 Opening the Cover Plate of an RRU Cabling Cavity.....................................................................................107

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

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

9.12 Closing the Cover Plate of an RRU Cabling Cavity....................................................................................112

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

11 Powering On an RRU.............................................................................................................117

12 Appendix...................................................................................................................................119

12.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side..........120

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RRU3268 Installation Guide 1 Changes in the RRU3268 Installation Guide

1 Changes in the RRU3268 Installation Guide

This chapter describes the changes in the RRU3268 Installation Guide.

01 (2013-03-18)

This is the first official release.

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RRU3268 Installation Guide 2 Installation Preparations

2 Installation Preparations

About This Chapter

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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RRU3268 Installation Guide 2 Installation Preparations

2.1 Reference Documents

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

The following reference documents are required during RRU installation:

l RRU3268 Hardware Description

l DBS3900 Installation Guide

l OCB 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)

Heat gun Phillips screwdriver (M3 to

Rubber mallet COAX crimping tool Wire stripper

ESD gloves Vacuum cleaner

Flat-head screwdriver (M3 to

M6)

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RRU3268 Installation Guide 2 Installation Preparations

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.]

Level

Multimeter

Inner hexagon spanner

Torque screwdriver

Torque socket

5 mm (0.2 in.)

(M3 to M6)

Marker (diameter ≤ 10 mm

Measuring tape

[0.39 in.])

Fixed pulley Rope

5 mm (0.2 in.)

Hydraulic pliers - -

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RRU3268 Installation Guide 2 Installation Preparations

2.3 Skills and Requirements for Onsite Personnel

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

Before the installation, pay attention to the following items:

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

proper installation and operation methods.

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

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

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RRU3268 Installation Guide 3 Information About the Installation

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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RRU3268 Installation Guide 3 Information About the Installation

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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RRU3268 Installation Guide 3 Information About the Installation

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

(1) Ports in the cabling cavity

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Silkscreen Description

RTN(+) Power port

NEG(-)

CPRI0 Optical/electrical port 0

RRU3268 Installation Guide 3 Information About the Installation

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_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

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 3-2 describes RRU indicators.

Table 3-2 RRU indicators

Indicator

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

CPRI1

Color Status Meaning

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)

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

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Software is being loaded to the module, or the module is not started.

be replaced.

RRU3268 Installation Guide 3 Information About the Installation

Indicator Color Status Meaning

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

Alarms are generated. The alarms may be caused by the faults on the related boards or ports. Therefore, you need to locate the fault before deciding whether to replace the module.

Steady off No alarm is generated.

ACT Green Steady on The module is running properly with TX

channels enabled or the software is being loaded without RRU running.

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

The module is running properly with TX channels disabled.

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

alarm is generated.

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

VSWR alarms are generated on the ANT_TX/RXB port.

Steady on VSWR alarms are generated on the

ANT_TX/RXA port.

Blinking (on for

0.125s and off for

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

0.125s)

CPRI0 Red or

green

CPRI1 Red or

green

Steady green The CPRI link is functioning properly.

Steady red An optical module fails to transmit or receive

signals because the optical module is faulty or the fiber optic cable is broken.

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

The CPRI link is out of lock because of a failure in clock lock between two modes or mismatched data rates over CPRI ports.

Steady off The optical module cannot be detected, or the

optical module is powered off.

Steady green The CPRI link is functioning properly.

Steady red An optical module fails to transmit or receive

signals because the optical module is faulty or the fiber optic cable is broken.

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

The CPRI link is out of lock because of a failure in clock lock between two modes or mismatched data rates over CPRI ports.

Steady off The optical module cannot be detected, or the

optical module is powered off.

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RRU3268 Installation Guide 3 Information About the Installation

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:

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

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

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

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

requirements must be met. For details about the minimum clearance requirements, see 3.5.2

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 3-4 shows an improper installation scenario.

Figure 3-4 Improper installation scenario

Method of installation:

l To 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 3-5.

l The 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

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RRU3268 Installation Guide 3 Information About the Installation

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 3-5 Requirements for the vertical deviation angle of an RRU

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

Installing an RRU on a Pole

Figure 3-6 shows the diameter of a pole for installing an RRU.

Figure 3-6 Diameter of a pole

CAUTION

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

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

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-7 shows a single RRU installed on a pole.

Figure 3-7 A single RRU installed on a pole

Figure 3-8 shows two RRUs installed on a pole.

Figure 3-8 Two RRUs installed on a pole

Figure 3-9, Figure 3-10, and Figure 3-11 show three or more RRUs installed on a pole.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-9 Three RRUs installed on a pole

Figure 3-10 Four RRUs installed on a pole

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-11 Six RRUs installed on a pole

Installing an RRU on U-steel

Figure 3-12 shows U-steel specifications.

Figure 3-12 U-steel specifications

CAUTION

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

Figure 3-13 shows an RRU installed on U-steel.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-13 RRU installed on U-steel

Installing an RRU on Angle Steel

Figure 3-14 shows angle steel specifications.

Figure 3-14 Angle steel specifications

CAUTION

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

Figure 3-15 shows an RRU installed on angle steel.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-15 RRU installed on angle steel

Installing an RRU on a Wall

The wall for installing RRUs must meet the following requirements:

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

weight of the RRU.

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

secured without damaging the wall.

CAUTION

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

l When 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 3-16. When multiple RRUs are installed on an indoor wall in side-mounted mode, the mounting brackets cannot be combined, as shown in Figure 3-17.

Figure 3-16 Correct installation of mounting brackets for multiple RRUs installed on an outdoor wall in side-mounted mode

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-17 Correct installation of mounting brackets for multiple RRUs installed on an indoor wall in side-mounted mode

Figure 3-18 shows an RRU installed on a wall.

Figure 3-18 RRU installed on a wall

Installing an RRU on an IFS06

In an IFS06 scenario:

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

heights of RRUs.

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

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

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RRU3268 Installation Guide 3 Information About the Installation

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 3-19.

Figure 3-19 Correct installation of mounting brackets for RRUs installed on an IFS06

Figure 3-20 and Figure 3-21 show RRUs installed on an IFS06.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-20 Three RRUs installed on an IFS06

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

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-21 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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RRU3268 Installation Guide 3 Information About the Installation

NOTE

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

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

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

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

Clearances for a Single RRU in Standard or Reverse Mode

Figure 3-22 shows the clearances for a single RRU in standard or reverse mode.

Figure 3-22 Clearances for a single RRU in standard or reverse mode

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RRU3268 Installation Guide 3 Information About the Installation

Clearances for a Single RRU in Side-Mounted Mode

Figure 3-23 shows the clearances for a single RRU in side-mounted mode.

Figure 3-23 Clearances for a single RRU in side-mounted mode

Clearances for a Single Tower-mounted RRU

Figure 3-24 and Figure 3-25 show the clearances for a single tower-mounted RRU in standard

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

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-24 Minimum clearance for a single tower-mounted RRU in standard or reverse mode

Figure 3-25 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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RRU3268 Installation Guide 3 Information About the Installation

NOTE

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

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

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

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

Recommended Clearance for Multiple RRUs Installed in Centralized Mode

Figure 3-26 shows the recommended clearance for multiple RRUs installed in centralized mode.

Figure 3-26 Recommended clearances for three or more RRUs installed on a pole

Minimum Clearance for Multiple RRUs Installed in Centralized Mode

Figure 3-27 shows the minimum clearance for multiple RRUs installed in centralized mode.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-27 Minimum clearances for multiple RRUs installed in centralized mode

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

Figure 3-28 shows the recommended clearance for multiple RRUs installed on a wall in standard

mode.

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

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RRU3268 Installation Guide 3 Information About the Installation

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

Figure 3-29 shows the minimum clearance for multiple RRUs installed on a wall in standard

mode.

Figure 3-29 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 3-30 shows the recommended clearance for multiple RRUs side-mounted on a wall.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-30 Recommended clearances for three or more RRUs installed on a wall in sidemounted mode

3.5.3 Installation Spacing Between RRUs

This section describes the horizontal and vertical spacing between RRUs.

Recommended Horizontal Spacing Between RRUs

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

Figure 3-31 Recommended horizontal spacing between RRUs

Minimum Horizontal Spacing Between RRUs

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

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-32 Minimum horizontal spacing between RRUs

Recommended Vertical Spacing Between RRUs

Figure 3-33 shows the recommended vertical spacing between RRUs.

Figure 3-33 Recommended vertical spacing between RRUs

Minimum Vertical Spacing Between RRUs

Figure 3-34 shows the minimum vertical spacing between RRUs.

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RRU3268 Installation Guide 3 Information About the Installation

Figure 3-34 Minimum vertical spacing between RRUs

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RRU3268 Installation Guide 4 Unpacking the Equipment

4 Unpacking the Equipment

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

Context

Procedure

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

NOTE

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

l Ensure 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.

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

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

soaked gloves, or dirty gloves.

CAUTION

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

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

If ...

Then ...

The total number tallies with the packing list

The total number does not tally with the packing list

Step 2 Check the exterior of the packing case.

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Go to Step 2.

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

RRU3268 Installation Guide 4 Unpacking the Equipment

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

Sign the Packing List with the customer.

those on the packing list

Either shipment shortage, wrong shipment

Report to the local Huawei office.

or damaged articles.

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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RRU3268 Installation Guide 5 Installation Process

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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RRU3268 Installation Guide 6 (Optional) Installing the Plastic Shells of the RRU

6 (Optional) Installing the Plastic Shells of the

RRU

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

Context

Procedure

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

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

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

Figure 6-1 Removing the metal sheet

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RRU3268 Installation Guide 6 (Optional) Installing the Plastic Shells of the RRU

(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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RRU3268 Installation Guide 6 (Optional) Installing the Plastic Shells of the RRU

Figure 6-3 Installing the plastic shells of the RRU

----End

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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

7 Hoisting an RRU and Related Cables onto a

Tower

About This Chapter

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

7.1 Hoisting an RRU onto a Tower

This section describes the procedures and precautions for hoisting an RRU and its mounting kits onto a tower. In tower-mounted 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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

7.1 Hoisting an RRU onto a Tower

This section describes the procedures and precautions for hoisting an RRU and its mounting kits onto a tower. In tower-mounted 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

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

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

during the installation.

Procedure

Step 1 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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

CAUTION

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

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

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

ground.

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

l Do not hoist any thing by the traction eye.

l Do 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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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.

Procedure

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

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

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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

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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RRU3268 Installation Guide 8 Installing the RRU

8 Installing the RRU

About This Chapter

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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RRU3268 Installation Guide 8 Installing the RRU

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

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(2) Pole installation bracket

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

bolt

(6) Hoist clamp on the main bracket

RRU3268 Installation Guide 8 Installing the RRU

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

Procedure

Step 1 Determine a position for installing the mounting brackets.

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

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

during the installation.

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

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

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

brackets according to Figure 8-3.

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

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

----End

8.2.2 Installing Two RRUs

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

Prerequisites

The hoist clamp on the main bracket is secured properly.

CAUTION

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

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

during the installation.

Procedure

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

Installing a Single RRU.

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RRU3268 Installation Guide 8 Installing the RRU

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

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

set of mounting brackets, and remove the main bracket from the auxiliary bracket, as shown in

Figure 8-9.

Figure 8-9 Removing the RRU main bracket

(1) Main bracket

(2) Pole installation bracket

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

8-10.

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

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

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

during the installation.

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the 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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RRU3268 Installation Guide 8 Installing the RRU

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

----End

8.3 Installing the RRU on U-steel

Prerequisites

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

The hoist clamp on the main bracket is secured properly.

CAUTION

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

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

during the installation.

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RRU3268 Installation Guide 8 Installing the RRU

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.

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

Single RRU to determine a position.

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

a position.

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

----End

8.4 Installing the RRU on Angle Steel

Prerequisites

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

The hoist clamp on the main bracket is secured properly.

CAUTION

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

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

during the installation.

Context

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

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RRU3268 Installation Guide 8 Installing the RRU

Figure 8-27 Top view of the RRU

(1) Angle steel

Procedure

Step 1 Determine a position for installing the mounting brackets.

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

Single RRU to determine a position.

l If 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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RRU3268 Installation Guide 8 Installing the RRU

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

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

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

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

during the installation.

Context

Procedure

Step 1 Disassemble the RRU mounting brackets, as shown in Figure 8-34.

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

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

weight of the RRU.

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

secured without damaging the wall.

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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

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

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

during the installation.

Context

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

heights of RRUs.

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

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

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RRU3268 Installation Guide 8 Installing the RRU

NOTE

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

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

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

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

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

with the IFS06.

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

Procedure

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

Figure 8-42 Disassembling the mounting brackets

(1) Main bracket

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

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

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

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

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

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RRU3268 Installation Guide 8 Installing the RRU

CAUTION

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

l Height-restricted scenarios

Use one finger to push and remove the rubber plugs on the beam and then install the pole installation bracket, as shown in Figure 8-43.

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

(1) Spring washer

(2) Rubber washer

l Height-unrestricted scenarios

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

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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

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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RRU3268 Installation Guide 8 Installing the RRU

Figure 8-48 Installing RRUs on the higher level

----End

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RRU3268 Installation Guide 9 Installing RRU Cables

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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RRU3268 Installation Guide 9 Installing RRU Cables

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

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RRU3268 Installation Guide 9 Installing RRU Cables

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

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

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

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

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

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

diameter of the cable.

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

cable, and the minimum bending radius of the breakout cable at each end of the fiber optic cable is 30 mm (1.18 in.).

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

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

Requirements for Cable Binding

l The same types of cable must be bound together.

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

(1.18 in.) and cannot be entangled.

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

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

in a straight line.

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

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

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

installed.

Security Requirements

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

inevitable, protect the cables with protection pipes.

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

between cables and heat sources.

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

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

Indoor Cabling Requirements

l Cables are routed indoors through the feeder window.

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RRU3268 Installation Guide 9 Installing RRU Cables

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

bending radius are met.

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

l The feeder window must be waterproofed.

Outdoor Cabling Requirements

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

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

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

pipe into the cabinet base for about 30 mm (1.18 in.) to 50 mm (1.97 in.), not into the cabinet. Block the pipe with waterproof tape or silicon gel, and secure the pipe to the cable hole at the cabinet bottom with metal piece.

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

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

l Cables are secured with cable clips.

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

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

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

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

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

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

Figure 9-1 Securing cables on the cable tray

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RRU3268 Installation Guide 9 Installing RRU Cables

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

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

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

or soldering joints to lengthen the cables.

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

made.

l Cables are routed in an untangled and orderly fashion.

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RRU3268 Installation Guide 9 Installing RRU Cables

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

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

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

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

Cabling Requirements for PGND Cables

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

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

overhead before they are led into the equipment room.

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

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

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

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

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

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

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

terminal.

Cabling Requirements for E1 Cables

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

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

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

l Sufficient slack is provided in E1 cables at turns.

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

shown in Figure 9-3.

Figure 9-3 E1 cables routed through the cabinet

Cabling Requirements for Fiber Optic Cables

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

all preparations are made.

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Huawei RRU3268 Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

About This Document

Contents

1 Changes in the RRU3268 Installation Guide

2 Installation Preparations

2.1 Reference Documents

2.2 Tools and Instruments

2.3 Skills and Requirements for Onsite Personnel

3 Information About the Installation

3.1 RRU Exterior

3.2 RRU Ports

3.3 RRU Indicators

3.4 Installation Scenarios

3.5 Installation Clearance Requirements of an RRU

3.5.1 Clearance for a Single RRU

3.5.2 Clearance for Multiple RRUs

3.5.3 Installation Spacing Between RRUs

4 Unpacking the Equipment

5 Installation Process

RRU3268 Installation Guide 6 (Optional) Installing the Plastic Shells of the RRU

RRU3268 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower

7.1 Hoisting an RRU onto a Tower

7.2 Hoisting Fiber Optic Cables onto a Tower

7.3 Hoisting Power Cables onto a Tower

8 Installing the RRU

8.1 Mounting Kits for an RRU

8.2 Installing the RRU on a Pole

8.2.1 Installing a Single RRU

8.2.2 Installing Two RRUs

8.2.3 Installing Three or More RRUs

8.3 Installing the RRU on U-steel

8.4 Installing the RRU on Angle Steel

8.5 Installing the RRU on a Wall

8.6 Installing an RRU on an IFS06

9 Installing RRU Cables

9.1 Cabling Requirements