aau3902 installation guide(04)(pdf)-en.pdf

AAU3902

Installation Guide

Issue 04

Date 2014-07-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent 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. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase 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 representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 04 (2014-07-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://www.huawei.com

mailto:[email protected]

About This Document

OverviewThis document describes procedures for installing an Active Antenna Unit 3902 (AAU3902,referred to as AAU in this document) and its cables. It also provides checklists for hardwareinstallation.

Product Version

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

Product Name Solution Version Product Version

DBS3900 SRAN7.0 and later versions V100R007C00 and laterversions

RAN14.0 and later versions V200R014C00 and laterversions

eRAN3.0 and later versions V100R005C00 and laterversions

Intended AudienceThis document is intended for:

l Base station installation personnel

Organization1 Changes in AAU3902 Installation Guide

This chapter describes the changes in AAU3902 Installation Guide.

2 Overview

This chapter describes the information to be known before the AAU installation, which includesthe installation scenarios and clearance requirements.

AAU3902Installation Guide About This Document


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3 Installation Preparations

This chapter lists the tools and instruments that must be obtained before the installation. It alsospecifies the skills that the onsite personnel must have.

4 Unpacking Check

Unpack and check the delivered equipment to ensure that all the materials are included and intact.

5 Moving an AAU

This section describes the method of moving an AAU and precautions that must be taken duringthe moving.

6 Installation Process

The process of installing an AAU consists of installing an AAU and its cables, checking theinstalled AAU, and performing a power-on check.

7 Installing an AAU

This chapter describes the process of installing an AAU.

8 Installing AAU Cables

This chapter describes the procedures for installing AAU cables.

9 Installation Checklist

This chapter describes how to check the hardware installation after an AAU is installed.

10 Powering On an AAU

This section describes the procedure for powering on an AAU.

ConventionsSymbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.



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Symbol Description

Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related to personalinjury.

Calls attention to important information, best practices andtips.NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration.

General Conventions

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

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are inCourier New.

Command Conventions

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


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 byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.



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


Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare 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 meansthe 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 movingthe pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move thepointer to a certain position.



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Contents

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

1 Changes in AAU3902 Installation Guide..................................................................................1

2 Overview.........................................................................................................................................32.1 Installation Scenarios......................................................................................................................................................42.2 Installation Clearance Requirements..............................................................................................................................7

3 Installation Preparations............................................................................................................123.1 Documents....................................................................................................................................................................133.2 Tools, Instruments, and Personal Protective Stuff.......................................................................................................133.3 Requirements for Onsite Personnel..............................................................................................................................14

4 Unpacking Check........................................................................................................................16

5 Moving an AAU...........................................................................................................................18

6 Installation Process.....................................................................................................................20

7 Installing an AAU........................................................................................................................217.1 Mounting Kits...............................................................................................................................................................227.2 Assembling Mounting Kits...........................................................................................................................................237.3 (Optional) Hoisting an AAU and Mounting Kits.........................................................................................................257.4 Installing an AAU on a Pole.........................................................................................................................................35

8 Installing AAU Cables................................................................................................................438.1 Cabling Requirements..................................................................................................................................................448.2 Cable Connections........................................................................................................................................................508.3 Cable Installation Process.............................................................................................................................................528.4 Installing an AAU PGND Cable..................................................................................................................................528.5 Opening the MU Cabling Cavity..................................................................................................................................548.6 Installing a CPRI Fiber Optic Cable.............................................................................................................................558.7 Installing an AAU Power Cable...................................................................................................................................568.8 Closing the MU Cabling Cavity...................................................................................................................................588.9 Installing a Feeder........................................................................................................................................................598.10 Installing an AISG Multi-Wire Cable and an AISG Extension Cable.......................................................................62

9 Installation Checklist..................................................................................................................66

AAU3902Installation Guide Contents


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10 Powering On an AAU...............................................................................................................67

AAU3902Installation Guide Contents


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1 Changes in AAU3902 Installation Guide

This chapter describes the changes in AAU3902 Installation Guide.

04 (2014-07-30)This is the fourth commercial release.

Compared with Issue 03 (2014-03-14), no information is added to or deleted from this issue.

Compared with Issue 03 (2014-03-14), this issue includes the following change.

Topic Change Description

The whole document Changed the PU22 module in slot 2 to a fillerpanel by moving the two RF ports on thePU22 module to the bottom of the AU.

03 (2014-03-14)This is the third commercial release.




8.9 Installing a Feeder Added the figure showing the routing of thefeeder.

02 (2013-12-23)This is the second commercial release.



AAU3902Installation Guide 1 Changes in AAU3902 Installation Guide


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2.1 Installation Scenarios Modified the specifications of the polesecured on a wall.

01 (2013-09-26)This is the first commercial release.

Compared with Draft A (2013-07-30), no information is added to or deleted from this issue.

Compared with Draft A (2013-07-30), this issue includes the following changes.


2.1 Installation Scenarios Added the installation scenario of theauxiliary pole and modified the specificationsof the pole.

7.3 (Optional) Hoisting an AAU andMounting Kits

Optimized the procedure for binding an AAUand added operations of the installationpersonnel on the tower when the cramp ringis close to the fixed pulley.

7.4 Installing an AAU on a Pole Separated the procedure for installing anAAU on a pole secured on a tower or the topof a building and the procedure for installingan AAU on a pole secured on a wall.

Draft A (2013-07-30)This is a draft.

AAU3902Installation Guide 1 Changes in AAU3902 Installation Guide


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2 Overview

About This Chapter

This chapter describes the information to be known before the AAU installation, which includesthe installation scenarios and clearance requirements.

2.1 Installation ScenariosAn AAU can be installed on a pole secured on a tower, a wall, or the top of a building.

2.2 Installation Clearance RequirementsThis section describes the recommended and minimum clearances for a single AAU and threeor more AAUs.

AAU3902Installation Guide 2 Overview


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2.1 Installation ScenariosAn AAU can be installed on a pole secured on a tower, a wall, or the top of a building.

On a Main Pole Secured on a Tower or the Top of a BuildingWhen an AAU is installed on a main pole, the pole bottom is secured on a stand. The followingfigure shows an AAU installed on a main pole.

Figure 2-1 AAU installed on a main pole secured on a tower or the top of a building

The following figure shows the diameter of a main pole for installing an AAU.

Figure 2-2 Diameter of a main pole



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NOTE

l The diameter of a main pole for installing an AAU ranges from 70 mm (2.76 in.) to 114 mm (4.49 in.).The thickness of a main pole must be greater than or equal to 4 mm (0.16 in.).

l When the diameter of a main pole ranges from 70 mm (2.76 in.) to 100 mm (3.94 in.), only one AAUcan be installed on the main pole.

l When the diameter of a main pole is greater than 100 mm (3.94 in.) and less than or equal to 114 mm(4.49 in.), a maximum of two AAUs can be installed on the main pole.

l When an AAU is installed on a main pole secured on the top of a building, a minimum of 2200 mm(86.61 in.) space must be reserved between the upper main bracket and the top of the building, and themain pole base must have a weight-bearing capacity of at least 300 kg (661.5 lb).

On an Auxiliary Pole Secured on a Tower or the Top of a BuildingWhen an AAU is installed on an auxiliary pole, the upper and lower ends of the auxiliary poleare secured on a support. The following figure shows an AAU installed on an auxiliary pole.

Figure 2-3 AAU installed on an auxiliary pole

The following figure shows the diameter of an auxiliary pole for installing an AAU.



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Figure 2-4 Diameter of an auxiliary pole

NOTE

l The diameter of an auxiliary pole for installing an AAU ranges from 50 mm (1.97 in.) to 114 mm (4.49in.).

l When the diameter of an auxiliary pole ranges from 50 mm (1.97 in.) to 60 mm (2.36 in.), the thicknessof the auxiliary pole must be greater than or equal to 4 mm (0.16 in.), and only one AAU can be installedon the auxiliary pole.

l When the diameter of an auxiliary pole is greater than 60 mm (2.36 in.) and less than or equal to 114mm (4.49 in.), the thickness of the auxiliary pole must be greater than or equal to 3 mm (0.12 in.), anda maximum of two AAUs can be installed on the auxiliary pole.

l When an AAU is installed on an auxiliary pole secured on the top of a building, a minimum of 2200mm (86.61 in.) space must be reserved between the upper main bracket and the top of the building,and the auxiliary pole base must have a weight-bearing capacity of 300 kg (661.5 lb).

l When an AAU is installed on an auxiliary pole secured on a tower, the length of the auxiliary polemust be greater than or equal to 1350 mm (53.15 in.).

On a Pole Secured on a WallThe following figure shows an AAU installed on a pole that is secured on a wall.



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Figure 2-5 On a pole secured on a wall

NOTE

l The distance between the pole and the wall ranges from 200 mm (7.87 in.) to 250 mm (9.84 in.), andthe wall must have a weight-bearing capacity of 240 kg (529 lb). These specifications are determinedby site survey and may vary in different scenarios.

l Specifications of a pole secured on a wall are the same as those of an auxiliary pole secured on the topof a building or a tower. For details, see Requirements of an auxiliary pole.

2.2 Installation Clearance RequirementsThis section describes the recommended and minimum clearances for a single AAU and threeor more AAUs.



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NOTE

l The recommended clearances ensure normal running and provide an appropriate space for operationand maintenance (OM). If there is sufficient space, retain the recommended clearances.

l The minimum clearances ensure normal running and heat dissipation, but OM activities such aschecking indicator status cannot be properly conducted. If the installation space is insufficient, retainthe minimum clearances after the installation.

Clearances for a Single AAUThe following figure shows the recommended clearances for a single AAU.

NOTE

The clearances to be reserved on one side (left or right) of an AAU must be greater than or equal to 300mm (11.81 in.), and the clearances to be reserved on the other side (right or left) must be greater than orequal to 600 mm (23.62 in.).

Figure 2-6 Recommended clearances for a single AAU

The following figure shows the minimum clearances for a single AAU installed on a pole securedon a tower or the top of a building.



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Figure 2-7 Minimum clearances for a single AAU installed on a pole secured on a tower or thetop of a building

The following figure shows the minimum clearances for a single AAU installed on a pole securedon a wall.



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Figure 2-8 Minimum clearances for a single AAU installed on a pole secured on a wall

Clearances for Three or More AAUsThe following figure shows the recommended clearances for three or more AAUs installed onpoles secured on a wall.



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Figure 2-9 Recommended clearances for three or more AAUs installed on poles secured on awall



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3 Installation Preparations

About This Chapter

This chapter lists the tools and instruments that must be obtained before the installation. It alsospecifies the skills that the onsite personnel must have.

3.1 DocumentsThis section lists the documents that must be obtained before the installation.

3.2 Tools, Instruments, and Personal Protective StuffThis section lists the tools and instruments that must be obtained before installation.

3.3 Requirements for Onsite PersonnelOnsite personnel must be qualified and trained. Before performing any operation, onsitepersonnel must be familiar with correct operation methods and safety precautions.

AAU3902Installation Guide 3 Installation Preparations


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3.1 DocumentsThis section lists the documents that must be obtained before the installation.

l Before the installation, familiarize yourself with related information in the followingdocuments:

– AAU3902 Hardware Description– Safety Precautions

l During the installation, refer to the following document:

– Installation Reference

3.2 Tools, Instruments, and Personal Protective StuffThis section lists the tools and instruments that must be obtained before installation.

Tools and Instruments

Wire stripper ESD gloves Compass

Torque screwdriver

(5 mm or 0.2 in.)

(M3 to M6)

(M3 to M6)

Phillips screwdriver (M3 toM6)

Flat-head screwdriver (M3to M6)

Adjustable wrench (size ≥ 32mm or 1.26 in.)

Torque wrenchSize: 16 mm (0.63 in.) or 32mm (1.26 in.)

Combination wrenchSize: 16 mm (0.63 in.) or 32mm (1.26 in.)

Hex key

(5 mm or 0.2 in.)

Multimeter



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Heat gun Measuring tape Cable cutter

Lifting sling Fixed pulley (weight-bearing capacity > 500 kg or1102.5 lb)

Utility knife

Diagonal pliers Hydraulic pliers -

Personal Protective Stuff

Slip-proof glove Safety helmet Safety belt

Antiskid shoes Union suit -

3.3 Requirements for Onsite PersonnelOnsite personnel must be qualified and trained. Before performing any operation, onsitepersonnel must be familiar with correct operation methods and safety precautions.



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Before the installation, pay attention to the following:

l The customer's technical engineers must be trained by Huawei and be familiar with theproper installation and operation methods.

l The number of onsite personnel depends on the engineering schedule and installationenvironment. Generally, three to five onsite personnel are necessary.



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4 Unpacking Check

Unpack and check the delivered equipment to ensure that all the materials are included and intact.

ContextNOTE

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

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

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

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

Go to 2.

The total number does not tally with thepacking list

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

Step 2 Check the exterior of the packing case.

AAU3902Installation Guide 4 Unpacking Check


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If... Then...

The outer packing case is intact Go to 3.

The outer packing case is severely damagedor soaked

Find out the cause and report the situation tothe local Huawei office.

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 withthose on the packing list

Sign the Packing List with the customer.

There is any shipment shortage or wrongshipment

Fill in and submit the Cargo Shortage andMishandling Report.

Articles are damaged. Fill in and submit the Article ReplacementReport.

CAUTIONTo protect the equipment and prevent damage to the equipment, you are advised to keep theunpacked 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 thephotos.

Step 4 Take the recording form out from the packing case for the antenna and fill out the form basedon the onsite situation.

NOTICEl In the AAU cascading scenarios, you must fill out the recording form.l Before filling out the recording form, ensure that the RET SN on the nameplate of the antenna

is the same as the RET SN in the recording form.

----End

AAU3902Installation Guide 4 Unpacking Check


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5 Moving an AAU

This section describes the method of moving an AAU and precautions that must be taken duringthe moving.

Procedure

Step 1 Move an AAU to the installation position, as shown in the following figure.

NOTICEl Hold the upper and lower handles of the AAU with both hands to prevent the AAU from

sliding.l Moving methods in illustrations b and c are not recommended because the AAU may slide

off your hands.

AAU3902Installation Guide 5 Moving an AAU


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Figure 5-1 Moving methods

----End

AAU3902Installation Guide 5 Moving an AAU


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6 Installation Process

The process of installing an AAU consists of installing an AAU and its cables, checking theinstalled AAU, and performing a power-on check.

The following figure shows the installation process.

Figure 6-1 Installation process

AAU3902Installation Guide 6 Installation Process


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7 Installing an AAU

About This Chapter

This chapter describes the process of installing an AAU.

7.1 Mounting KitsThis section describes mounting kits for an AAU.

7.2 Assembling Mounting KitsThis section describes the procedure and precautions for assembling the mounting kits andpreinstalling the lower main bracket on the AAU.

7.3 (Optional) Hoisting an AAU and Mounting KitsThis section describes the procedure and precautions for hoisting an AAU and mounting kits.

7.4 Installing an AAU on a PoleThis section describes the procedure and precautions for installing an AAU on a pole.

AAU3902Installation Guide 7 Installing an AAU


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7.1 Mounting KitsThis section describes mounting kits for an AAU.

Complete Set of Mounting KitsThe following figure shows a complete set of mounting kits.

Figure 7-1 Complete set of mounting kits

(A) Upper main bracket(1) (B) Lower main bracket (C) Angle adjusting component

(D) Auxiliary bracket (E) M10x200 bolt (F) M10x25 screws

NOTE

(1) The lifting eye on the upper main bracket can be used for hoisting an antenna or a module using a fixedpulley.

Lower Main BracketThe following figure shows the exterior of a lower main bracket.



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Figure 7-2 Lower main bracket

The distance between upper main bracket and lower main bracket is 1.22 m (4 ft). The angle ofthe antenna is adjusted by using the angle adjusting component that is installed onto the lowermain bracket, and corresponds to the signs on the upper line: -3°, -1.5°, 0°, +1.5°, and +3°.

7.2 Assembling Mounting KitsThis section describes the procedure and precautions for assembling the mounting kits andpreinstalling the lower main bracket on the AAU.

Procedure

Step 1 Optional: The angle adjusting component is installed in position +3° before delivery, and canbe adjusted according to the site requirements, as shown in the following figure.

NOTICEEnsure that the DOWN side of the angle adjusting component and the arrows on the lower mainbracket face the same direction.



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Figure 7-3 Installing the angle adjusting component on the lower main bracket

(A) Angle adjusting component (B) Lower main bracket

1. Use an M10 torque wrench to loosen the four M10 screws on the angle adjusting component,and remove the angle adjusting component.

2. Adjust the position of the angle adjusting component in the lower main bracket as required.Use an M10 torque wrench to tighten the four M10 screws on the angle adjusting componentto 40 N·m (354.03 lbf·in.).

Step 2 Partially tighten a bolt on the auxiliary bracket, and preinstall the auxiliary bracket on the angleadjusting component, as shown in the following figure.

Figure 7-4 Preinstalling the auxiliary bracket on the angle adjusting component

(A) Bolt (B) Auxiliary bracket

Step 3 Preinstall the lower main bracket on the lower attachment plate of the AAU, as shown in thefollowing figure.



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NOTICEEnsure that the arrows on the lower main bracket are pointing to the top of the AAU.

Figure 7-5 Preinstalling the lower main bracket on the AAU

Step 4 Partially tighten a bolt on the other auxiliary bracket, and preinstall the auxiliary bracket on theupper main bracket, as shown in the following figure.

Figure 7-6 Preinstalling the other auxiliary bracket on the upper main bracket

----End

7.3 (Optional) Hoisting an AAU and Mounting KitsThis section describes the procedure and precautions for hoisting an AAU and mounting kits.



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Prerequisites

NOTICEl Do not stand the AAU upright because the radio frequency (RF) ports at the bottom cannot

support the weight of the AAU.l Place a foam pad or cardboard under an AAU to protect the AAU housing from damage

during the installation.l When installing an AAU on a tower, a lifting sling and a fixed pulley must be used to securely

bind the AAU. The lifting sling can be removed only after the AAU is securely installed.This prevents personal injury caused by any falling AAU.

Contextl An AAU can be hoisted manually or using a winch.l If a fixed pulley is used, the load-bearing capacity of the fixed pulley must be greater than

500 kg (1102.5 lb).l If a winch is used, you are advised to choose a winch that meets the following requirements:

1. The lifting capacity must be greater than 200 kg (441 lb).2. The winch can use many adapting pieces, such as, the round steel, U-steel, angle steel,

T-beam, and I-beam.3. Either the external or internal power supply is supported.4. There is a low risk that the lifted object may fall.5. The lifting sling provided by the customer can be used.6. The size is small, the weight is light, and the operation can be conveniently finished

by a single person.

Procedure

Step 1 An installation technician packs the fixed pulley and the assembled upper main and auxiliarybrackets into a tool package. Then the installation technician climbs the tower with the toolpackage and a lifting sling.

NOTE

l The upper main and auxiliary brackets must be hoisted and installed onto the tower before the AAUis hoisted onto the tower. If the installation technician does not bring the brackets up to the tower, thebrackets need to be hoisted using the fixed pulley.

l The upper main and auxiliary brackets can be hoisted onto the tower in the same way as the AAU. Fordetails, see Figure 7-16. Bind the upper main and auxiliary brackets, as shown in the following figure.



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Figure 7-7 Binding the upper main and auxiliary brackets

Step 2 The installation technician on the tower marks the installation position for the upper main bracketbased on requirements in 2.2 Installation Clearance Requirements.

Step 3 Secure the upper main and auxiliary brackets onto the pole.

1. Manually adjust the two M10 nuts based on the diameter of the pole, and fit the bracketson the pole. Then, partially tighten the untightened bolt on the auxiliary bracket into theupper main bracket, as shown in the following figure.

NOTICEEnsure that the arrows on the upper main bracket are pointing up.

Figure 7-8 Securing the upper main and auxiliary brackets onto the pole

2. The installation technician stands at a proper location and uses a compass to adjust theazimuth according to the site requirements, as shown in the following figure.



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Figure 7-9 Adjusting the azimuth

(1) Compass

3. Use an M10 torque wrench to tighten the two M10 bolts on the upper main brackets to 40N·m (354.03 lbf·in.) so that the main and auxiliary brackets are tightly secured onto thepole, as shown in the following figure.

NOTICEl Tighten the head of an M10 bolt until the locknut at the front of the bolt closely contacts

with the upper main bracket, and secure the two M10 nuts on the bolt.l Tighten the two bolts alternatively and ensure that the spacing between the upper main

and auxiliary brackets is the same on both sides.



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(A) Locknut (B) M10 nut (C) Head of the M10 bolt

Step 4 The installation technician on the tower installs the fixed pulley on the lifting eye on the uppermain bracket, lead the lifting sling through the fixed pulley, and lower both ends of the liftingsling down to the ground, as shown in the following figure.

Figure 7-11 Installing the fixed pulley and lifting sling

(1) Lifting eye (2) Fixed pulley (3) Cramp ring



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Step 5 The installation technician under the tower uses the lifting sling and traction sling to bind theAAU.1. Under the tower, wind the end with a cramp ring on the lifting sling round the lower handle

of the AAU for two circles and then the upper handle of the AAU for two circles, as shownin the following figure.

Figure 7-12 Winding the lifting sling round the AAU

(1) Lower handle (2) Upper handle

2. Reserve a length of 300 mm (11.81 in.) to 350 mm (13.78 in.) between the upper handleand the cramp ring, and tie the lifting sling to the upper handle, as shown in the followingfigure.



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Figure 7-13 Tying the lifting sling to the upper handle

(1) Tying position

3. Open the cramp ring, clasp the lifting sling into the cramp ring, and close the cramp ring,as shown in the following figure.

Figure 7-14 Clasping the lifting sling into the cramp ring

4. Use the traction sling to securely bind the lower handle of the AAU and make a secureknot, as shown in the following figure.



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NOTICEThe lower handle must be bound by the lifting sling on one side and traction sling on theother side. This is to ensure the balance of the AAU during the lift.

Figure 7-15 Binding the lower handle with the traction sling

(1) Lifting sling (2) Traction sling

Step 6 Hoist the AAU with its lower main and auxiliary brackets to the tower and protect the AAUfrom colliding with the tower, as shown in the following figure.



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Figure 7-16 Hoisting the AAU (manually)

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

1. Installation technicians A, B, and C pull the lifting sling downwards, and installationtechnician E pulls the traction sling outwards to protect the AAU from colliding with thetower.

2. When the cramp ring is close to the fixed pulley, installation technician D moves the AAUupright and hangs the upper handle of the AAU on the U-shaped slot of the upper mainbracket, as shown in the following figure.



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Figure 7-17 Hanging the upper handle of the AAU on the U-shaped slot of the upper mainbracket

3. Installation technician D unties the slings.



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Figure 7-18 Hoisting the AAU (using a winch)

(1) Lifting sling (2) Fixed pulley (3) Traction sling (4) Winch

1. Installation technician A operates the winch, and installation technician B pulls the tractionsling outwards to protect the AAU from colliding with the tower.

2. When the cramp ring is close to the fixed pulley, installation technician C moves the AAUupright and hangs the upper handle of the AAU on the U-shaped slot of the upper mainbracket, as shown in Figure 7-17.

3. Installation technician D unties the slings.

----End

7.4 Installing an AAU on a PoleThis section describes the procedure and precautions for installing an AAU on a pole.

Prerequisites

Bind an AAU (with the lower main and auxiliary brackets) and the assembled upper main andauxiliary brackets, and hoist them separately onto a tower. For details, see (Optional) Hoistingan AAU and Mounting Kits.



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Procedurel Installing an AAU on a pole secured on a tower or the top of a building

1. Partially tighten the two screws on both sides of the upper main bracket into the AAU,as shown in the following figure.

Figure 7-19 Partially securing the AAU to the upper main bracket

2. Install the lower main bracket and the auxiliary bracket on the pole, partially tightenthe untightened bolt, and use an M10 torque wrench to tighten both bolts to 40 N·m(354.03 lbf·in.), as shown in the following figure.

NOTICESecure the two bolts alternatively and ensure that the spacing between the lower mainand auxiliary brackets is the same on both sides.



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Figure 7-20 Securing the AAU to the lower main bracket

(A) M10×200 bolt (B) M10 nut

3. Use an M10 torque wrench to secure the two bolts on both sides of the upper mainbracket and the two bolts on both sides of the lower main bracket to 40 N·m (354.03lbf·in.), as shown in the following figure.

Figure 7-21 Tightening the bolts connecting the main brackets and the attachmentplates on the AAU

l Installing an AAU on a pole secured on a wall1. Mark the installation position of the upper main bracket, as shown in the following

figure.



37

Figure 7-22 Distance between the upper main bracket and the ground

2. Secure the upper main and auxiliary brackets onto the pole.

a. Manually adjust the two M10 nuts based on the diameter of the pole, and fit thebrackets on the pole. Then, partially tighten the untightened bolt on the auxiliarybracket into the upper main bracket, as shown in the following figure.

NOTICEEnsure that the arrows on the upper main bracket are pointing up.


b. The installation technician stands at a proper location and uses a compass toadjust the azimuth according to the site requirements, as shown in the followingfigure.



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Figure 7-24 Adjusting the azimuth

(1) Compass

c. Use an M10 torque wrench to tighten the two M10 bolts on the upper mainbrackets to 40 N·m (354.03 lbf·in.) so that the main and auxiliary brackets aretightly secured onto the pole, as shown in the following figure.

NOTICEl Tighten the head of an M10 bolt until the locknut at the front of the bolt closely

contacts with the upper main bracket, and secure the two M10 nuts on thebolt.

l Tighten the inner M10 nut on the bolt before tightening the outer M10 nut.l Secure the two bolts alternatively and ensure that the spacing between the

upper main and auxiliary brackets is the same on both sides.



39


(A) Locknut (B) M10 nut (C) Head of the M10 bolt

3. Hang the upper handle of the AAU on the U-shaped slot of the upper main bracket,and partially tighten the two bolts on the upper main bracket into the AAU, as shownin the following figure.

Figure 7-26 Partially securing the AAU to the upper main bracket

4. Install the lower main bracket and the auxiliary bracket on the pole, partially tightenthe untightened bolt, and use an M10 torque wrench to tighten both bolts to 40 N·m(354.03 lbf·in.), as shown in the following figure.



40

NOTICETighten the two bolts alternatively and ensure that the spacing between the lower mainand auxiliary brackets is the same on both sides.

Figure 7-27 Securing the AAU to the lower main bracket

(A) M10x200 bolt (B) M10 nut

5. Use an M10 torque wrench to secure the two bolts on both sides of the upper mainbracket and the two bolts on both sides of the lower main bracket to 40 N·m (354.03lbf·in.), as shown in the following figure.



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Figure 7-28 Tightening the bolts connecting the main brackets and the attachmentplates on the AAU

----End



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8 Installing AAU Cables

About This Chapter

This chapter describes the procedures for installing AAU cables.

8.1 Cabling RequirementsCables must be laid out according to the specified cabling requirements to prevent signalinterference.

8.2 Cable ConnectionsThis section describes the cable connections for a single AAU and multiple AAUs.

8.3 Cable Installation ProcessThis section describes the cable installation process.

8.4 Installing an AAU PGND CableThis section describes the procedure for installing an AAU PGND cable.

8.5 Opening the MU Cabling CavityThis section describes the procedure and precautions for opening the MU cabling cavity.

8.6 Installing a CPRI Fiber Optic CableThis section describes the procedure and precautions for installing a CPRI fiber optic cable.

8.7 Installing an AAU Power CableThis section describes the procedure for installing an AAU power cable.

8.8 Closing the MU Cabling CavityThis section describes the procedure and precautions for closing the MU cabling cavity.

8.9 Installing a FeederThis section describes the procedure and precautions for installing a feeder for the AAU.

8.10 Installing an AISG Multi-Wire Cable and an AISG Extension CableThis section describes the procedures for installing an AISG multi-wire cable and an AISGextension cable.

AAU3902Installation Guide 8 Installing AAU Cables


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8.1 Cabling RequirementsCables must be laid out according to the specified cabling requirements to prevent signalinterference.

NOTE

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

General Cabling Requirements

Bending radius requirements

l The bending radius of a 7/8'' feeder must be greater than 250 mm (9.84 in.), and the bendingradius of a 5/4'' feeder must be greater than 380 mm (14.96 in.).

l The bending radius of a 1/4'' jumper must be greater than 35 mm (1.38 in.). The bendingradius of a super-flexible 1/2'' jumper must be greater than 50 mm (1.97 in.), and the bendingradius of an ordinary 1/2'' jumper must be greater than 127 mm (5 in.).

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

l The bending radius of a fiber optic cable is at least 20 times of its diameter, and the bendingradius of a breakout cable is at least 30 mm (1.18 in.).

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

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

Cable binding requirements

l Cables of the same type must be bound together.

l Different types of cables must be separately laid out and bound, with a minimum distanceof 30 mm (1.18 in.) from each other.

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

l The cable ties must face the same direction, and those at the same horizontal line must bein a straight line.

l The excess of the indoor cable ties is cut off. The excess of 5 mm (0.197 in.) of the outdoorcable ties is reserved, and the cut surfaces are smooth without sharp edges.

l After cables are installed, labels or nameplates must be attached to the cables at their ends,curves, and interconnection positions.

Security requirements

l When routing cables, avoid sharp objects, for example sharp edges on the wall. If necessary,use tubes to protect the cables.

l When routing cables, keep the cables away from heat sources and use heat insulationmaterials to insulate the cables from the heat sources.

l Reserve a proper distance (0.1 m or 3.937 in. is recommended) between equipment andcables especially at the cable curves to protect the cables and equipment.

Indoor cabling requirements

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



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l Reserve drip loops for all cables outside the feeder window before routing them into theroom. Ensure that the radiuses of the drip loops are greater than or equal to the minimumbending radiuses of the cables.

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

l Apply waterproof treatment to the feeder window.

Outdoor Cabling Requirementsl Protect outdoor cables against potential damage. For example, put the cables through tubes.

l The cables to be protected include AC power cables, transmission cables, and cables laidout underground.

l When routing cables through tubes on the ground below the cabinet, put a 30 mm to 50mm (1.18 in. to 1.97 in.) length of the tubes into the base of the cabinet but do not put thetubes into the cabinet. Use waterproof tape or waterproof silicon gel to block both ends ofthe tubes and use sheet metal tabs to secure the tubes to the cable holes in the base.

l When routing cables through tubes along a metal cable trough below the cabinet, do notput the tubes into the base of the cabinet but cover the cable trough and connect the tubesto the cable holes in the base.

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

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

l Determine the positions where the clips are installed according to the actual situation. Forexample, 7/8" feeders are secured with clips at an interval of 1.5 m to 2 m (4.92 ft to 6.56ft), CPRI fiber optic cables and power cables are secured with clips at an interval of 1 mto 1.5 m (3.28 ft to 4.92 ft). Ensure that the clips are evenly spaced and in the same direction.

l When fastening cables with a clip, ensure that the cables are aligned neatly and are routedthrough the holes in the clip. Do not stretch the cables too tightly.

NOTE

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

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

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

Figure 8-1 Exterior of the clips

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



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

Figure 8-2 Cables secured on a cable tray

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

The following figure shows the cables secured on a tower.



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Figure 8-3 Cables secured on a tower

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

Special Cabling Requirements

Cabling of power cables

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

l If the length of power cables is insufficient, replace the cables rather than adding connectorsor soldering joints to lengthen the cables.

l Cables can only be laid out under well-planned instructions. The cabling activities of fiberoptic cables are allowed only when qualified personnel and communication facilities areavailable.

l Do not circle and twist cables.



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l After routing a DC power cable onto the platform on a tower, route it along the shortestpath to the rails surrounding the platform, and route it along the inside of the rails.

l After routing a DC power cable close to the equipment on a tower, use clips to secure thepower cable onto a pole or the rails surrounding the platform. Ensure that there is noexcessively long distance between the equipment and the position where the power cableis secured.

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

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

l The external conductor of the coaxial wire and the shield layer of the shielded cable musthave proper electrical contact with the metal surface of the equipment to which they areconnected.

l PGND cables and signal cables must be installed separately. A certain distance must bereserved between them to prevent interference from each other.

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

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

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

Cabling of E1 cablesl E1 cables must not cross power cables, PGND cables, or RF cables when laid out. If

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

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

l Sufficient slack is provided for E1 cables at turns.

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

Figure 8-4 E1 cables routed in the cabinet

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

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



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l The operating temperature of fiber optic cables ranges from -40ºC to +60ºC (-40ºF to+140ºF). If the actual temperature is beyond this range, take protective measures or selectanother route.

l Do not circle and twist cables.l Do not bind a fiber optic cable at the position where it bends.l Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the fiber optic

cables away from sharp objects.l When fiber optic cables are routed, the excess of the fiber optic cables must be coiled around

special devices, such as a fiber coiler.l An unarmored fiber optic cable must be bound using binding straps. If a fiber optic patch

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

Figure 8-5 Binding fiber optic cables

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

with force.l Unused optical connectors must be covered with dustproof caps.l The fiber optic cables must not be pressed by the door of the cabinet when routed, as shown

in the following figures.

Figure 8-6 CPRI fiber optic cables routed in the cabinet (1)



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Figure 8-7 CPRI fiber optic cables routed in the cabinet (2)

Figure 8-8 FE/GE fiber optic cables routed in the cabinet

l After routing a fiber optic cable onto the platform on a tower, route it along the shortest

path to the rails surrounding the platform, and route it along the inside of the rails.l After routing a fiber optic cable close to the equipment on a tower, use clips to secure the

fiber optic cable onto a pole or the rails surrounding the platform. Ensure that there is noexcessively long distance between the equipment and the position where the cable issecured.

l Coil the excess of the fiber optic cables near the equipment on the tower before securingthe cables on the tower.

8.2 Cable ConnectionsThis section describes the cable connections for a single AAU and multiple AAUs.

Cable Connections for a Single AAUThe following figure shows the cable connections for a single AAU.



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Figure 8-9 Cable connections for a single AAU

Cable Connections for Multiple AAUsThe following figure shows the cable connections for multiple AAUs.

Figure 8-10 Cable connections for multiple AAUs



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8.3 Cable Installation ProcessThis section describes the cable installation process.

The cable installation process is shown in the following figure.

Figure 8-11 Cable installation process

8.4 Installing an AAU PGND CableThis section describes the procedure for installing an AAU PGND cable.

ContextThe following table lists the specifications of a PGND cable.

Table 8-1 Specifications of a PGND cable

Cable Connector atOne End (forthe ExternalGround Bar)

Connector atthe Other End(for the AAU)

Cross-sectional Area

Color

PGND cable OT terminal(M8)

OT terminal(M6)

16 mm2 (0.025in.2)

Green andyellow



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Procedure

Step 1 Prepare a PGND cable.1. Cut the cable to the length suitable for the actual cable route.2. Add OT terminals to both ends of the cable according to the instructions in Assembling the

OT Terminal and the Power Cable.

Step 2 Install the PGND cable.1. Secure the M6 OT terminal at one end of the PGND cable to the ground terminal on the

AAU to 4.8N·m (42.48 lbf·in.), then secure the M8 OT terminal at the other end to theexternal ground copper bar to 8 N·m (70.81 lbf·in.), as shown in the following figure.

Figure 8-12 Installing the PGND cable

NOTE

Crimp the OT terminal in correct directions, as shown in the following figure.

Figure 8-13 Correct direction of an OT terminal

2. Secure the M8 OT terminal at the other end of the PGND cable to an external ground bar.

Step 3 Label the installed cable according to the instructions in Attaching a Sign Plate Label.

----End



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8.5 Opening the MU Cabling CavityThis section describes the procedure and precautions for opening the MU cabling cavity.

Procedure

Step 1 Put on an ESD wrist strap or a pair of ESD gloves.

NOTICETake proper ESD protection measures, for example, put on an ESD wrist strap or a pair of ESDgloves, to prevent electrostatic damage to the boards, modules, or other electronic components.

Step 2 Open an MU cabling cavity, as shown in the following figure.

1. Use an M4 Phillips screwdriver to loosen the screw on the handle of the cabling cavity.

2. Raise the handle and push the handle inwards to open the MU cabling cavity.

NOTICEAfter the screw on the handle is loosened, the handle springs open. Push the handle fromthe original position with an angle less than or equal to 60°.

Figure 8-14 Opening a cabling cavity



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Step 3 Use an M4 Phillips screwdriver to loosen the screws on the corresponding cable clips and openthe cable clips, as shown in the following figure.

Figure 8-15 Opening the cable clips

Step 4 Remove the waterproof blocks for the cables.

----End

8.6 Installing a CPRI Fiber Optic CableThis section describes the procedure and precautions for installing a CPRI fiber optic cable.

Contextl A CPRI fiber optic cable transmits CPRI signals between a BBU and an AAU.l For details about CPRI fiber optic cable connections, see section "CPRI Cable Connections"

in DBS3900 Hardware Description.

Procedure

Step 1 Lower the pullers of two optical modules, insert one optical module into the CPRI0 port on theAAU and the other one into the CPRI port on the BBU, and raise the pullers, as shown in thefollowing figure.



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Figure 8-16 Installing an optical module

Step 2 Take out a CPRI fiber optic cable and cut off the traction cable at its end.

Step 3 Remove the protection bag and white cap.

Step 4 Insert one end of the CPRI fiber optic cable into the CPRI0 port on the AAU, as shown in thefollowing figure.

Figure 8-17 Installing a CPRI fiber optic cable

Step 5 Insert the other end of the fiber optic cable into the optical module on the BBU side.

Step 6 Lay out the cables according to the instructions in Cabling Requirements, and use cable ties tobind them.

Step 7 Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

8.7 Installing an AAU Power CableThis section describes the procedure for installing an AAU power cable.

Context

The following figure shows the power cable diagram on the AAU.



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Figure 8-18 Power cable diagram on the AAU

(1) Power cable diagram on the AAU

Procedure

Step 1 Add an EPC5 connector to one end of the AAU power cable according to the instructions inAssembling the EPC5 Connector and the Power Cable, and add a connector to the other end ofthe power cable depending on the external power equipment.

Step 2 Connect the EPC5 connector at one end of the AAU power cable to the PWR port on the AAU,as shown in the following figure.

Figure 8-19 Installing an AAU power cable

Step 3 Connect the connector at other end of the AAU power cable to the corresponding port on thepower equipment.

NOTE

l One DCDU-11B can supply power to a maximum of six AAUs. The AAU power cable can be connectedto any wiring terminal from LOAD0 to LOAD5 on the DCDU-11B.

l The EPU can supply power to a maximum of six AAUs. The AAU power cable can be connected toany of RRU0 to RRU5 ports on the EPU.


Step 5 Label the installed cables according to the instructions in Attaching a Cable-Tying Label.

----End



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8.8 Closing the MU Cabling CavityThis section describes the procedure and precautions for closing the MU cabling cavity.

Procedure

Step 1 Close the cable clips for the installed cables. Use an M4 torque screwdriver to tighten the threescrews on each clip in the sequence shown in the following figure to 2 N·m (17.7 lbf·in.).

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

Figure 8-20 Closing and tightening cable clips

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

NOTICEThe cables and waterproof blocks should be securely placed in the correct slots.



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Figure 8-21 Correct placement of waterproof blocks

Step 3 Close the cabling cavity and press the handle. Use an M4 Phillips screwdriver to tighten thescrew on the handle to 2 N·m (17.7 lbf·in.), as shown in the following figure.

Figure 8-22 Closing a cabling cavity

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

----End

8.9 Installing a FeederThis section describes the procedure and precautions for installing a feeder for the AAU.

Procedure

Step 1 Connect one end of the feeder with a DIN male connector to the RF port on the AAU and tightenthe connector to 25 N·m (221.27 lbf·in.), as shown in the following figure.



59

Figure 8-23 Installing a feeder

Step 2 Connect the other end of the feeder to the external RF module.

Step 3 Waterproof the connector of the feeder, as shown in the following figure.

Figure 8-24 Waterproofing the connector of the feeder

(1) Waterproof tape (2) Insulation tape



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NOTE

l Before wrapping waterproof tape, stretch the tape evenly until the length of the tape becomes twice itsoriginal length.

l Do not stretch the PVC insulation tape when wrapping the PVC insulation tape.

l Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlapsmore than 50% of the preceding layer. Ensure that neighboring layers are stuck to each other.

l Ensure that the adhesive surface of the tape overlaps the lower layer.

l When 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. Start wrapping the connector at aposition 50 mm (1.97 in.) away from 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 redundanttape 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 bottomup, then from top down, and finally from bottom up. Cut off the redundant tape after threelayers 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.) awayfrom one end of the PVC insulation tape.

Step 4 Check the dustproof caps on antenna connectors. In outdoor scenarios, dustproof caps must bewaterproofed, as shown in the following figure.

NOTICEDo not remove dustproof caps from vacant antenna connectors.

Figure 8-25 Waterproofing a dustproof cap

(1) Dustproof cap (2) Waterproof tape (3) Insulation tape

NOTE

l Before wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice its originallength. Stretch and press the tape tightly to avoid wrinkles or spaces. Ensure that the tape is tightly wrappedand stuck and will not fall off.

l When wrapping tape, ensure that each layer of tape overlaps more than 50% of the preceding layer.




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1. Verify that dustproof caps are not removed.

2. Wrap each connector with three layers of waterproof tape, first from bottom up, then fromtop down, and finally from bottom up. Do not cut the tape until all the three layers of thetape are already wrapped. Wrap each layer of tape around the connector tightly.

3. Wrap each connector with three layers of insulation tape, first from bottom up, then fromtop down, and finally from bottom up. Do not cut the tape until all the three layers of thetape are already wrapped. Wrap each layer of tape around the connector tightly.



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

Step 7 Attach the color-coding to the installed cable according to the instructions in Attaching the ColorRing.

----End

8.10 Installing an AISG Multi-Wire Cable and an AISGExtension Cable

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

Context

When the distance between the RET port at the bottom of an RRU and the AISG IN port at thebottom of an AAU is longer than 5 m (16.4 ft), an AISG multi-wire cable cannot connect theRRU and the AAU because it is not long enough. In this case, an AISG extension cable is usedto extend the AISG multi-wire cable.

Procedure

Step 1 Install an AISG multi-wire cable and an AISG extension cable.

l The following figure shows how to install an AISG multi-wire cable when an AISGextension cable is not used.

1. Connect one end of the AISG multi-wire cable with a standard AISG female connectorto the AISG IN port at the bottom of the AAU, and use a 19 mm (0.75 in.) torquewrench to tighten the connector to 2 N·m (17.7 lbf in.).

2. Use an M3 flat-head screwdriver to loosen the screws on the dustproof cap on the RETport at the bottom of an RRU and remove the dustproof cap.

3. Connect the other end of the AISG multi-wire cable with a waterproof DB9 connectorto the RET port at the bottom of the RRU, and use an M3 flat-head screwdriver totighten the screws on the waterproof DB9 connector to 0.4 N·m (3.54 lbf in.).



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Figure 8-26 Installing an AISG multi-wire cable

l The following figure shows how to install an AISG multi-wire cable and an AISG extensioncable.

1. Connect one end of the AISG extension cable with a standard AISG female connectorto the AISG IN port at the bottom of the AAU, and use a 19 mm (0.75 in.) torquewrench to tighten the connector to 2 N·m (17.7 lbf in.).

2. Connect the other end of the AISG extension cable with a standard AISG maleconnector to the standard female connector on the AISG multi-wire cable.

3. Use an M3 flat-head screwdriver to loosen the screws on the dustproof cap on the RETport at the bottom of an RRU and remove the dustproof cap.

4. Connect the other end of the AISG multi-wire cable with a waterproof DB9 connectorto the RET port at the bottom of the RRU, and use an M3 flat-head screwdriver totighten the screws on the waterproof DB9 connector to 0.4 N·m (3.54 lbf in.).



63

Figure 8-27 Installing an AISG multi-wire cable and an AISG extension cable

(1) AISG extension cable (2) AISG multi-wire cable

Step 2 Waterproof the connectors on the AISG multi-wire cable.

Figure 8-28 Waterproofing the connectors on the AISG multi-wire cable

(1) Waterproof tape (2) PVC insulation tape



64

NOTE

l Before wrapping the waterproof tape, stretch the tape evenly until the length of the tape is twice its originallength.

l Do not stretch the PVC insulation tape when wrapping it.

l Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlapsmore than 50% of the lower layer.


l Leave an extra length of 3 mm (0.118 in.) to 5 mm (0.197 in.) when cutting the extra part off the cable ties.

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. 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 on the connector, first from bottom up, then fromtop down, and finally from bottom up. Cut off the redundant tape after three layers arewrapped. Wrap each layer of tape around the connector tightly.



Step 4 Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End



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9 Installation Checklist

This chapter describes how to check the hardware installation after an AAU is installed.

The following table describes the AAU hardware installation checklist.

Table 9-1 AAU installation checklist

No. Item

1 The position for each device conforms to the engineering drawing and meetsclearance requirements. Sufficient space is reserved for equipment maintenance.

2 The AAU is securely installed.

3 Vacant RF ports are covered with waterproof caps and the caps are tightened.

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

5 The terminals at both ends of each power cable or PGND cable are securely solderedor crimped.

6 None of power cables and PGND cables can be short-circuited or reverselyconnected. In addition, these cables are not damaged or broken.

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

8 The protection ground of the AAU and the surge protection ground of the buildingshare one group of ground body.

9 The connectors of each signal cable are intact and securely linked, and these cablesare not damaged or broken.

10 Labels are correct, legible, and complete at both ends of each cable, feeder, andjumper.

AAU3902Installation Guide 9 Installation Checklist


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10 Powering On an AAU

This section describes the procedure for powering on an AAU.

NOTICEAn AAU must be powered on within 24 hours after being unpacked. During maintenance, thepower-off time of an AAU cannot exceed 24 hours.

The following figure shows the procedure for powering on an AAU.

Figure 10-1 Powering on an AAU

AAU3902Installation Guide 10 Powering On an AAU


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