Huawei Technologies PRRU3911 pico Remote Radio Unit User Manual Installation Guide

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DBS3900 LampSite

Installation Guide

Issue 07

Date 2015-12-30

HUAWEI TECHNOLOGIES CO., LTD.

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

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

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

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

holders.

Notice

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

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

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

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

representations of any kind, either express or implied.

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

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

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

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

About This Document

Overview

This document describes how to install the modules and cables for the BBU, DCU3900,

RHUB3908, pRRU3901, pRRU3902, pRRU3907, and pRRU3911. It also provides checklists

for hardware installation.

NOTE

lUnless otherwise specified, BBU in this document refers to BBU3900 and BBU3910.

lDCU3900 in this document refers to DCU.

lRHUB3908 in this document refers to RHUB.

lUnless otherwise specified, pRRU in this document refers to pRRU3901, pRRU3902, pRRU3907, and

pRRU3911.

Product Version

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

Product Name Solution Version Product Version

DBS3900 LampSite lSRAN10.1 and later versions

lRAN17.1 and later versions

leRAN8.1 and later versions

leRAN TDD 8.1 and later

versions

V100R010C10 and later

versions

Intended Audience

This document is intended for:

lBTS installation personnel

DBS3900 LampSite

Installation Guide About This Document

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

Contents

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

1 Changes in DBS3900 LampSite Installation Guide................................................................1

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

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

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

2.3 Requirements for Installation Personnel.........................................................................................................................7

3 Unpacking and Checking............................................................................................................ 8

4 Installing a BBU...........................................................................................................................10

5 Installing a DCU.......................................................................................................................... 11

6 Installing an RHUB.....................................................................................................................12

6.1 Information About the Installation............................................................................................................................... 13

6.1.1 Installation Scenarios.................................................................................................................................................13

6.1.2 Installation Clearance Requirements......................................................................................................................... 18

6.1.3 Installation Environment........................................................................................................................................... 20

6.2 Installation Process....................................................................................................................................................... 22

6.3 Installing an RHUB...................................................................................................................................................... 23

6.3.1 Installing an RHUB in a 19-Inch Cabinet or Rack....................................................................................................23

6.3.2 Installing an RHUB in a 19-Inch Shelf..................................................................................................................... 26

6.3.3 Installing an RHUB on a Wall...................................................................................................................................29

6.4 Installing RHUB Cables............................................................................................................................................... 33

6.4.1 Requirements for Cable Layout.................................................................................................................................33

6.4.2 Cable List...................................................................................................................................................................36

6.4.3 Cable Connections.....................................................................................................................................................38

6.4.4 Cable Installation Process..........................................................................................................................................39

6.4.5 Installing PGND Cable..............................................................................................................................................40

6.4.6 Installing Ethernet Cable........................................................................................................................................... 42

6.4.7 Installing CRPI Optical Cables..................................................................................................................................45

6.4.8 Installing Alarm Cable (Optional).............................................................................................................................47

6.4.9 Installing Power Cable...............................................................................................................................................48

6.5 Checking the RHUB Hardware Installation................................................................................................................. 49

6.6 Power-on Check on an RHUB......................................................................................................................................51

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iii

7 Installing a pRRU3901................................................................................................................ 53

7.1 Information About the Installation............................................................................................................................... 54

7.1.1 Product Family.......................................................................................................................................................... 54

7.1.2 Installation Scenario.................................................................................................................................................. 55

7.1.3 Space Requirements.................................................................................................................................................. 59

7.1.4 Installation Environment Requirements.................................................................................................................... 60

7.2 Obtaining the MAC Address (Optional) ..................................................................................................................... 61

7.3 Installation Process....................................................................................................................................................... 61

7.4 Installing a pRRU3901................................................................................................................................................. 62

7.4.1 pRRU3901 Mounting Kits.........................................................................................................................................63

7.4.2 Installing a pRRU3901 on a Wall..............................................................................................................................64

7.4.3 Installing a pRRU3901 on a Ceiling..........................................................................................................................67

7.4.4 Installing a pRRU3901 on a Pole.............................................................................................................................. 70

7.4.5 Installing a pRRU3901 on a Plate............................................................................................................................. 72

7.4.6 Installing a pRRU3901 on a Keel..............................................................................................................................75

7.4.7 Installing the Cabinet.................................................................................................................................................78

7.5 Installing pRRU3901 Cables........................................................................................................................................ 85

7.5.1 Requirements for Cable Layout.................................................................................................................................85

7.5.2 pRRU3901 Cable List............................................................................................................................................... 87

7.5.3 Cable Connections (Indoor).......................................................................................................................................88

7.5.4 Cable Connections (Outdoor)....................................................................................................................................91

7.5.5 Cable Connections (LTE TDD)................................................................................................................................. 92

7.5.6 pRRU3901 cable installation process........................................................................................................................94

7.5.7 Installing an Ethernet Cable...................................................................................................................................... 94

7.5.8 Installing an RF jumpers (Optional)..........................................................................................................................96

7.6 Checking the pRRU3901 Hardware Installation.......................................................................................................... 98

7.7 Powering on the pRRU3901.......................................................................................................................................100

8 Installing a pRRU3902 or pRRU3911.....................................................................................101

8.1 Information About the Installation............................................................................................................................. 102

8.1.1 Product Family........................................................................................................................................................ 102

8.1.2 Installation Scenario................................................................................................................................................ 104

8.1.3 Space Requirements................................................................................................................................................ 108

8.1.4 Installation Environment Requirements.................................................................................................................. 109

8.2 Installation Process..................................................................................................................................................... 110

8.3 Installing a pRRU3902 or pRRU3911........................................................................................................................ 110

8.3.1 Mounting Kits.......................................................................................................................................................... 111

8.3.2 Installing a pRRU3902 or pRRU3911 on a Wall.....................................................................................................112

8.3.3 Installing a pRRU3902 or pRRU3911 on a Ceiling................................................................................................ 115

8.3.4 Installing a pRRU3902 or pRRU3911 on a Plate.................................................................................................... 119

8.3.5 Installing a pRRU3902 or pRRU3911 on a Keel.................................................................................................... 126

8.3.6 Installing a pRRU3902 or pRRU3911 on Steel Hangers........................................................................................ 129

8.3.7 Installing the Cabinet...............................................................................................................................................133

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8.4 Installing pRRU3902 or pRRU3911 Cables...............................................................................................................137

8.4.1 Requirements for Cable Layout...............................................................................................................................137

8.4.2 Cable List.................................................................................................................................................................138

8.4.3 Cable Connections...................................................................................................................................................140

8.4.4 Cable Installation Process........................................................................................................................................144

8.4.5 Installing a pRRU3902 Ethernet Cable................................................................................................................... 144

8.4.6 Installing a pRRU3911 Ethernet Cable................................................................................................................... 146

8.4.7 Installing a pRRU3902 RF Jumper (Optional)........................................................................................................148

8.4.8 Installing a pRRU3911 RF Jumper (Optional)........................................................................................................ 150

8.5 (Optional) Installing a Combiner................................................................................................................................152

8.6 Checking the pRRU Hardware Installation................................................................................................................ 154

8.7 Powering on the pRRU...............................................................................................................................................155

9 Installing a pRRU3907.............................................................................................................. 157

9.1 Information About the Installation............................................................................................................................. 158

9.1.1 pRRU3907 Product Family..................................................................................................................................... 158

9.1.2 Constraints and Limitations.....................................................................................................................................158

9.1.3 Installation Clearance and Space Requirements......................................................................................................161

9.1.4 Installation Environment Requirements.................................................................................................................. 163

9.2 Installation Process..................................................................................................................................................... 164

9.3 Installing a pRRU3907............................................................................................................................................... 164

9.3.1 pRRU3907 Mounting Kits.......................................................................................................................................165

9.3.2 Installing a pRRU3907 on a Wall............................................................................................................................166

9.3.3 Installing a pRRU3907 on a Pole............................................................................................................................ 170

9.4 Installing pRRU3907 Cables...................................................................................................................................... 172

9.4.1 Cabling Requirements............................................................................................................................................. 172

9.4.2 pRRU3907 Cable List............................................................................................................................................. 174

9.4.3 pRRU3907 Cable Connections................................................................................................................................175

9.4.4 pRRU3907 cable installation process......................................................................................................................175

9.4.5 Installing a PGND Cable......................................................................................................................................... 176

9.4.6 Installing an RF Jumper...........................................................................................................................................177

9.4.7 Opening the Cover Plate of a pRRU3907 Cabling Cavity...................................................................................... 181

9.4.8 Installing an Ethernet Cable.................................................................................................................................... 182

9.4.9 Closing the Cover Plate of a pRRU3907 Cabling Cavity....................................................................................... 184

9.5 Checking the pRRU3907 Hardware Installation........................................................................................................ 185

9.6 Powering on the pRRU3907.......................................................................................................................................187

10 (Optional) Installing the PoE Surge Protector and Cables..............................................189

11 (Optional) Installing the RF Surge Protector and Cables................................................191

12 (Optional) Installing the Extender....................................................................................... 193

13 (Optional) Installing the Cabinet and Cabinet Cables.................................................... 197

13.1 Installation Clearance Requirements........................................................................................................................ 198

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13.2 Mounting Bracket and Attachment Plate..................................................................................................................198

13.2.1 Mounting Bracket.................................................................................................................................................. 198

13.2.2 Attachment Plate....................................................................................................................................................199

13.3 Installing a Cabinet...................................................................................................................................................200

13.3.1 Installing the Cabinet on a Wall.............................................................................................................................200

13.3.2 Installing the Cabinet on a Pole.............................................................................................................................205

13.3.3 Installing the Cabinet on U-steel........................................................................................................................... 207

13.3.4 Installing the Cabinet on Angle Steel.................................................................................................................... 211

13.3.5 Installing the Cabinet on Metal Grid..................................................................................................................... 214

13.3.6 Installing the Cabinet on the Floor........................................................................................................................ 219

13.4 Installing Cabinet Cables..........................................................................................................................................223

13.4.1 Cable Connections.................................................................................................................................................223

13.4.2 Installing a PGND Cable for the Cabinet.............................................................................................................. 226

14 Appendix...................................................................................................................................228

14.1 MAC Collection Template........................................................................................................................................229

14.2 Assembling a Shielded RJ45 Connector and an Ethernet Cable.............................................................................. 229

14.3 DBS3900 LampSite Engineering Label................................................................................................................... 233

14.4 Attaching an L-Shaped Label................................................................................................................................... 236

14.5 Attaching a Sign Plate Label.................................................................................................................................... 237

Index................................................................................................................................................240

DBS3900 LampSite

Installation Guide Contents

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

1 Changes in DBS3900 LampSite Installation

Guide

This chapter describes the changes in the DBS3900 LampSite Installation Guide.

07 (2015-12-30)

This is the seventh commercial release.

Compared with 06 (2015-10-30), this issue incorporates the following new topics:

l8.4.6 Installing a pRRU3911 Ethernet Cable

l10 (Optional) Installing the PoE Surge Protector and Cables

l11 (Optional) Installing the RF Surge Protector and Cables

l13 (Optional) Installing the Cabinet and Cabinet Cables

Compared with 06 (2015-10-30), this issue incorporates the following changes:

Content Change Description

Entire document Added the information about pRRU3911

and the cabinet used in the outside scenario.

Compared with 06 (2015-10-30), no information is deleted.

06 (2015-10-30)

This is the sixth commercial release.

Compared with 05 (2015-08-30), this issue includes the following new topics:

l9 Installing a pRRU3907

Compared with 05 (2015-08-30), no information is changed.

Compared with 05 (2015-08-30), no information is deleted.

DBS3900 LampSite

Installation Guide 1 Changes in DBS3900 LampSite Installation Guide

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

05 (2015-08-30)

This is the fifth commercial release.

Compared with 04 (2015-07-30), no information is added.

Compared with 04 (2015-07-30), this issue incorporates the following changes

Content Change Description

6.4.7 Installing CRPI Optical Cables Added the descriptions about the CPRI

optical fiber connection in sharing BBUs

with Macro Networks scenario.

Compared with 04 (2015-07-30), no information is deleted.

04 (2015-07-30)

This is the fourth commercial release.

Compared with 03 (2015-06-30), no information is added.

Compared with 03 (2015-06-30), this issue incorporates the following changes.

Content Change Description

Entire document Added the RHUB that has no electrical

transmission port.

Compared with 03 (2015-06-30), no information is deleted.

03 (2015-06-30)

This is the third commercial release.

Compared with 02 (2015-05-08), this issue includes the following new topics:

l5 Installing a DCU

Compared with 02 (2015-05-08), this issue incorporates the following changes:

Content Change Description

Entire document Added the descriptions about the DCU.

Compared with 02 (2015-05-08), no information is deleted.

02 (2015-05-08)

This is the second commercial release.

Compared with 01 (2015-03-23), no information is added.

DBS3900 LampSite

Installation Guide 1 Changes in DBS3900 LampSite Installation Guide

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

Compared with 01 (2015-03-23), this issue incorporates the following changes:

Content Change Description

6.4.9 Installing Power Cable Modified the RHUB configurations of

upper-level circuit breakers.

8.1.2 Installation Scenario Deleted the minimum space requirements of

the pRRU3901.

8.1.3 Space Requirements Deleted the minimum space requirements of

the pRRU3902.

8.3.2 Installing a pRRU3902 or

pRRU3911 on a Wall

Added the step about locking the protection

screw of pRRU3902.

8.3.3 Installing a pRRU3902 or

pRRU3911 on a Ceiling

8.3.4 Installing a pRRU3902 or

pRRU3911 on a Plate

8.3.5 Installing a pRRU3902 or

pRRU3911 on a Keel

Compared with 01 (2015-03-23), no information is deleted.

01 (2015-03-23)

This is the first commercial release.

Compared with draft B (2015-02-10), this issue includes the following new topics:

l8 Installing a pRRU3902 or pRRU3911

Compared with draft B (2015-02-10), this issue incorporates the following changes:

Content Change Description

Entire document Added the descriptions about the

pRRU3902.

Compared with draft B (2015-02-10), no information is deleted.

Draft B (2015-02-10)

This is a draft release.

Compared with draft A (2015-01-15), no information is added.

Compared with draft A (2015-01-15), this issue incorporates the following change:

DBS3900 LampSite

Installation Guide 1 Changes in DBS3900 LampSite Installation Guide

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

Content Change Description

6.1.1 Installation Scenarios Added the descriptions about the RHUB

panel must not face upwards.

Compared with draft A (2015-01-15), no information is deleted.

Draft A (2015-01-15)

This is a draft release.

Compared with Issue 08 (2014-12-30) of V100R009C00, no information is added.

Compared with Issue 08 (2014-12-30) of V100R009C00, this issue incorporates the following

change:

Content Change Description

Entire document The base station in the LampSite solution is

renamed DBS3900 LampSite.

Compared with Issue 08 (2014-12-30) of V100R009C00, no information is deleted.

DBS3900 LampSite

Installation Guide 1 Changes in DBS3900 LampSite Installation Guide

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

2 Installation Preparations

About This Chapter

Before starting the installation, you must obtain the required reference documents, tools, and

instruments, and familiarize yourself with the skills required.

2.1 Reference Documents

Before the installation, you must read the following documents:

2.2 Preparing Tools and Instruments

This section describes the tools and instruments that must be prepared before the installation.

2.3 Requirements for Installation Personnel

This section describes requirements for installation engineers. They must be qualified and

trained, and familiar with correct operation methods and safety precautions before performing

any operations.

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Installation Guide 2 Installation Preparations

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2.1 Reference Documents

Before the installation, you must read the following documents:

lDBS3900 LampSite Hardware Description

lInstallation Reference

2.2 Preparing Tools and Instruments

This section describes the tools and instruments that must be prepared before the installation.

Marker

Level

Torque screwdriver

(M4 to M6)

Diagonal pliers

Power cable crimping tool RJ11 crimping tool Cable cutter

Rubber mallet Crown saw (Ø60) Wire stripper

Hammer drill (Ø6, Ø8 and

Ø12)

Torque wrench (Ø10 mm) Protective gloves

Guarded blade utility knife ESD gloves Long measuring tape

DBS3900 LampSite

Installation Guide 2 Installation Preparations

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Multimeter Network cable tester Vacuum cleaner

Ladder Torque wrench for SMA

connector

Socket wrench (M6)

Hole screwdriver (T20) –-

2.3 Requirements for Installation Personnel

This section describes requirements for installation engineers. They must be qualified and

trained, and familiar with correct operation methods and safety precautions before performing

any operations.

Before the installation, pay attention to the following items:

lTechnical engineers must take Huawei training and be familiar with proper installation

and operation methods.

lThe number of installation personnel depends on the engineering schedule and

installation environment. Generally, three to five persons are required. Generally, only

three to five onsite personnel are necessary.

DBS3900 LampSite

Installation Guide 2 Installation Preparations

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3 Unpacking and Checking

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

materials are complete and intact.

Context

NOTE

The following lists important notes when you are transporting, lifting, or installing the equipment or

components:

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

lWear clean gloves and do not touch them with bare hands, sweat-soaked gloves, or dirty gloves.

NOTICE

You must power on the RHUB or pRRU within 7 days after it is unpacked.

Procedure

Step 1 Count the total number of the shipments.

If... Then...

The total number of the components is

consistent with that recorded in the

packing lists on all packing boxes

Go to Step 2.

The total number of the components is

inconsistent with that recorded in the

packing lists on all packing boxes

Report the problems and causes to the local

Huawei office.

Step 2 Check the exterior of each packing box.

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Installation Guide 3 Unpacking and Checking

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If... Then...

The exterior of each packing box is intact Go to Step 3.

It is damaged or soaked Report the problems and causes to the local

Huawei office.

The collision label is red Do not unpack the packing box and claim for

compensation from the transportation

company.

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

If... Then...

The type and number are consistent with

the packing list on each packing list

Sign the Packing List with the operator.

There is any shortage, wrong delivery, or

damaged equipment

Report the problems and causes to the local

Huawei office.

NOTICE

Perform the following operations to protect the components from any damages and help find

out the cause of any damage in future: 1. Store the unpacked equipment and packing materials

indoors. 2. Take photos of the storeroom, rusted or eroded equipment, packing box, and

packing materials. 3. File the photos.

----End

DBS3900 LampSite

Installation Guide 3 Unpacking and Checking

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4 Installing a BBU

This chapter describes the process of installing a BBU.

For details about the installation of the BBU, see DBS3900 Installation Guide.

DBS3900 LampSite

Installation Guide 4 Installing a BBU

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5 Installing a DCU

This chapter describes the process of installing a DCU.

For details about the installation of the DCU, see DCU3900 Installation Guide.

DBS3900 LampSite

Installation Guide 5 Installing a DCU

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6 Installing an RHUB

About This Chapter

This chapter describes the process of installing an RHUB. RHUBs are classified into those

with electrical transmission ports and those with no electrical transmission ports. Unless

otherwise specified, this document uses the RHUBs with no electrical transmission ports as an

example.

6.1 Information About the Installation

This section describes the information to be learnt before RHUB installation, including the

RHUB installation scenarios, clearance, and installation environment.

6.2 Installation Process

The RHUB installation involves installing an RHUB module, installing RHUB cables,

checking the RHUB hardware installation, and powering on the RHUB.

6.3 Installing an RHUB

An RHUB can be installed in a cabinet, rack, shelf, or on a wall.

6.4 Installing RHUB Cables

This section describes how to install cables for an RHUB.

6.5 Checking the RHUB Hardware Installation

After an RHUB is installed, check the installation of hardware including the devices and

related cables.

6.6 Power-on Check on an RHUB

This section describes the power-on check on the RHUB after the RHUB hardware is

installed and checked.

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Installation Guide 6 Installing an RHUB

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6.1 Information About the Installation

This section describes the information to be learnt before RHUB installation, including the

RHUB installation scenarios, clearance, and installation environment.

6.1.1 Installation Scenarios

An RHUB can be installed in a 19-inch cabinet, rack, shelf, or on a wall.

NOTICE

To prevent the RHUB from water drops, the RHUB panel must not face upwards (shown in

Figure 6-1) in any installation scenarios.

Figure 6-1 Improper installation mode

The RHUB mounting ears are installed in standard mode or reverse mode. The reverse mode

is used by default. The two installation modes are defined as follows:

lIn standard mode, the front of the mounting ear is aligned with the RHUB panel, as

shown in Figure 6-2.

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Installation Guide 6 Installing an RHUB

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Figure 6-2 Installing mounting ears in standard mode

lIn reverse mode, the front of the mounting ear is 31 mm away from the RHUB panel, as

shown in Figure 6-3.

Figure 6-3 Installing mounting ears in reverse mode

Installing an RHUB in a 19-Inch Cabinet or Rack

Installing an RHUB in a 19-inch cabinet or rack: Secure the mounting ear to the mounting

bracket by using M6 screws.

lIf there are no other modules installed in the 1 U space near the RHUB, install the

RHUB directly. Otherwise, remove the modules before installing the RHUB.

lBefore installation, you need to check the installation mode supported by the rack and

adjust the position of the mounting ear.

Figure 6-4 and Figure 6-5 show RHUBs installed in a cabinet or rack, respectively.

DBS3900 LampSite

Installation Guide 6 Installing an RHUB

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Figure 6-4 Installing an RHUB in a 19-inch cabinet or rack in standard mode

Figure 6-5 Installing an RHUB in a 19-inch cabinet in reverse mode

Installing an RHUB in a 19-Inch Shelf

When an RHUB is installed in a 19-inch shelf, the shelf must be installed on a wall. One shelf

can house multiple RHUBs with 1 U space between two RHUBs.

Figure 6-6 and Figure 6-7 show RHUBs installed in a 19-inch shelf.

DBS3900 LampSite

Installation Guide 6 Installing an RHUB

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Figure 6-6 RHUB installed in a 19-inch shelf in standard mode

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Installation Guide 6 Installing an RHUB

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Figure 6-7 RHUB installed in a 19-inch shelf in reverse mode

Installing an RHUB on a Wall

An RHUB can be installed on a wall.

The wall on which an RHUB is installed must meet the following requirements:

lWhen a single RHUB is installed, the wall must have a capacity of bearing at least four

times the weight of the RHUB.

lExpansion bolts must be tightened to 10 N·m (88.507 bf·in.) to ensure the bolts work

properly and the wall remains intact without cracks in it.

Figure 6-8 shows an RHUB installed on a wall.

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Installation Guide 6 Installing an RHUB

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Figure 6-8 RHUB installed on a wall

6.1.2 Installation Clearance Requirements

When an RHUB is installed in a 19-inch cabinet, rack, shelf, or on a wall, a minimum

clearance is required for easy cabling and operation and maintenance. A recommended

installation clearance is provided based on experience.

NOTICE

lDo not install or place inflammable materials above or under an RHUB.

lA clearance of 350 mm must be reserved in front of the air intake vent of the fan of the

power supply unit (PSU) for maintenance.

Figure 6-9 shows the installation clearance for the RHUB installed in a 19-inch cabinet, rack,

or shelf.

DBS3900 LampSite

Installation Guide 6 Installing an RHUB

Issue 07 (2015-12-30) Huawei Proprietary and Confidential

Figure 6-9 Installation clearance for an RHUB installed in a 19-inch cabinet, rack, or shelf

Figure 6-10 and Figure 6-11 shows the recommended and minimum installation clearance

respectively when the RHUB is installed on a wall.

Figure 6-10 Recommended installation clearance for a wall-mounted RHUB (unit: mm)

DBS3900 LampSite

Installation Guide 6 Installing an RHUB

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Figure 6-11 Minimum installation clearance for a wall-mounted RHUB (unit: mm)

6.1.3 Installation Environment

The installation environment of an RHUB involves the running environment specifications

for the RHUB and other specifications.

RHUB Running Environment Specifications

Table 6-1 shows the environment specifications for the RHUB installed indoors.

lThe temperature and humidity of the installation position must ensure normal operation.

A cool and ventilated place is recommended.

lThe heat dissipation holes on the RHUB cannot be blocked.

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Installation Guide 6 Installing an RHUB

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Table 6-1 RHUB environment specifications

Specifi

cations

Installation

Scenario

RHUB

Quantity

Condition Remarks

Operati

tempera

ture

Installed on a

wall or in a 19-

inch rack.

N/A -5°C to

+50°C

N/A

Installed in a

shelf.

1 -5°C to

+45°C

N/A

2 -5°C to

+43°C

N/A

3 -5°C to

+40°C

N/A

Relativ

humidit

Installed in all

scenarios.

N/A 5% RH to

95% RH

N/A

Altitude N/A N/A -60 m to

+1800 m

Works properly.

1800 m to

4000 m

Above the 1800 m altitude,

the maximum operating

temperature decreases by

1°C each time the altitude

increases by 220 m.

NOTE

Installing more than one RHUB, 1 U space is required between two RHUBs.

Other Running Environment Specifications

lThe RHUB cannot be installed at an air outlet of the heat dissipation box of an air

conditioner or other heat-generating appliances.

lThe RHUB cannot be installed near a strong heat source.

lThe RHUB cannot be installed in a position with water dripping, such as outdoor

equipment of air conditioners, pipe, and leaking or dripping roofs.

lThe installation position must be far from rains. If the RHUB is installed on a wall, there

must be no window on either side of the wall.

lThe installation position must be far away from high voltage, highly corrosive devices,

flammable or explosive substances, and electromagnetic interference such as power

stations, high-voltage substations, and wired TV towers.

lThe RHUB must be installed in a dry, ventilating, and dust-proof place.

lIf the RHUB is installed in parking areas or basements, the installation position must be

well-ventilated.

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Requirements for the Upper-level Circuit Breaker

Type C upper-level AC circuit breakers or slow-blow fuses must be used for power cables.

The maximum current must not exceed 16 A. Table 6-2 describes the recommended

specifications.

Table 6-2 Circuit breaker specifications for power cables

Power Supply Upper-level AC Circuit

Breaker (For a single

RHUB)

Cross-Sectional Area of

the Input Power Cable

220 V AC single-phase ≥ 6 A 1.5 mm2

110 V AC dual-live-wire

110 V AC single-phase ≥ 12 A

6.2 Installation Process

The RHUB installation involves installing an RHUB module, installing RHUB cables,

checking the RHUB hardware installation, and powering on the RHUB.

Figure 6-12 shows the RHUB installation process.

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Figure 6-12 RHUB installation process

6.3 Installing an RHUB

An RHUB can be installed in a cabinet, rack, shelf, or on a wall.

6.3.1 Installing an RHUB in a 19-Inch Cabinet or Rack

This section describes how to install an RHUB in a 19-inch cabinet.

Procedure

lThe following describes how to install an RHUB with mounting ears in reverse mode:

NOTE

If necessary, request one more person for assistance.

a. With one hand holding it, align the mounting holes with the installation holes,

slowly push the RHUB into the required position in the cabinet, as shown in Figure

6-13.

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Figure 6-13 Pushing an RHUB into a cabinet

b. Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws

with a torque of 2 N•m, as shown in Figure 6-14.

Figure 6-14 Tightening screws

lThe following describes how to install an RHUB with mounting ears aligned with the

RHUB panel:

NOTE

If necessary, request one more person for assistance.

a. Remove the mounting ears on both sides of the RHUB by removing the four M4×8

screws, as shown in Figure 6-15.

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Figure 6-15 Removing mounting ears and screws

b. Use a torque screwdriver or Phillips screwdriver to tighten the four M4×8 screws

with a torque of 1.4 N•m to install the removed mounting ears again, as shown in

Figure 6-16. The mounting ears must be aligned with the RHUB panel.

Figure 6-16 Installing mounting ears in standard mode

c. With one hand holding it, align the mounting holes with the installation holes,

slowly push the RHUB into the required position in the cabinet, as shown in Figure

6-17.

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Figure 6-17 Pushing an RHUB into a cabinet

d. Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws

with a torque of 2 N•m, as shown in Figure 6-18.

Figure 6-18 Tightening screws

----End

6.3.2 Installing an RHUB in a 19-Inch Shelf

If a shelf houses more than one RHUB, 1 U space is required between two RHUBs. The PSU

must be installed at the bottom of the cabinet.

Procedure

lThe following describes how to install an RHUB with mounting ears installed in reverse

mode:

NOTE

If necessary, request one more person for assistance.

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a. With one hand holding it, align the mounting holes with the installation holes,

slowly push the RHUB into the required position in the shelf.

b. Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws

with a torque of 2 N•m, as shown in Figure 6-19.

Figure 6-19 Tightening screws

lThe following describes how to install an RHUB with mounting ears installed in

standard mode:

NOTE

If necessary, request one more person for assistance.

a. Remove the mounting ears on both sides of the RHUB by removing the four M4×8

screws, as shown in Figure 6-20.

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Figure 6-20 Removing mounting ears and screws

b. Use a torque screwdriver or Phillips screwdriver to tighten the four M4×8 screws

with a torque of 1.4 N•m to install the removed mounting ears again, as shown in

Figure 6-21. The mounting ears must be aligned with the RHUB panel.

Figure 6-21 Installing mounting ears in standard mode

c. With one hand holding it, align the mounting holes with the installation holes,

slowly push the RHUB into the required position in the cabinet, as shown in .

d. Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws

with a torque of 2 N•m, as shown in Figure 6-22.

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Figure 6-22 Tightening screws

----End

6.3.3 Installing an RHUB on a Wall

An RHUB can be installed on a wall.

Procedure

Step 1 The mounting ears are installed in reverse mode by default. Before installing an RHUB on a

wall, modify the installation mode of the mounting ears on the RHUB.

lUse a torque screwdriver or Phillips screwdriver to remove the mounting ears on both

sides of the RHUB by removing the four M4×8 screws, as shown in Figure 6-23.

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Figure 6-23 Removing screws and mounting ears

lRotate the mounting ears 90 degrees clockwise, and use a torque screwdriver or Phillips

screwdriver to secure the mounting ear with a torque of 1.4 N•m, as shown in Figure

6-24.

Figure 6-24 Installing mounting ears and screws

Step 2 Determine the position on the wall for installing the RHUB based on the requirements in the

engineering blueprint and 6.1.2 Installation Clearance Requirements. Place the RHUB to

the position to be installed against the wall, and then mark the four anchor points where the

mounting ear screws are fastened using a marker, as shown in Figure 6-25.

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Figure 6-25 Anchor points for installing an RHUB on a wall

(1) Level (2) RHUB (3) Wall

CAUTION

To prevent inhalation or eye contact with dust, take adequate preventive measures when

drilling holes.

Step 3 Drill holes at the anchor point and install expansion bolts, as shown in Figure 6-26.

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Figure 6-26 Drilling holes and installing expansion bolts

(1) M6×60

expansion bolt

(2) Nut (3) Spring washer (4) Flat washer (5) Extension tub

1. Use a hammer drill with bit 8 to drill holes with a diameter of 8 mm and a depth of 45

mm to 50 mm at the marked anchor points. All the holes have the same depth.

2. Use a vacuum cleaner to clear the dust inside and around each hole. If the distance

between two holes is incorrect, mark and drill holes again.

3. Partially tighten an expansion bolt and place it vertically into each hole.

4. Use a rubber mallet to hit the expansion bolt until the entire expansion sleeve is in the

hole.

5. Remove the M6×60 bolt, nut, spring washer, and flat washer from each expansion bolt in

sequence.

NOTICE

After removing an expansion bolt, ensure that the top of the expansion sleeve is level

with the wall. If it is not level, the RHUB cannot be installed on the concrete floor

evenly and securely.

Step 4 Align the mounting holes with the four M6×60 expansion bolts. Install spring washer 6 and

flat washer 6 in sequence on each M6×60 expansion bolt, insert the bolts to each expansion

tub, and then use a torque wrench or socket wrench to tighten the four M6×60 bolts with a

torque of 5 N•m to secure the RHUB to the wall, as shown in Figure 6-27.

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Figure 6-27 Installing an RHUB on a wall

NOTE

As shown in the preceding figure, when the RHUB is placed against the wall, ensure that the RHUB

panel is vertical to the ground and the PSU is on the lower part of the RHUB panel.

----End

6.4 Installing RHUB Cables

This section describes how to install cables for an RHUB.

6.4.1 Requirements for Cable Layout

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 requirements for routing the cable.

General Requirements for Cable Layout

National Standards

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lCode for Engineering Design of Generic Cabling System for Building and Campus (GB

50311-2007)

lCode for Engineering Acceptance of Generic Cabling System for Building and Campus

(GB50312-2007).

lSecurity Protection Engineering Technology Specifications (GB 50348-2004)

lCode for Construction and Acceptance of the Electronic Information System Room (GB

50462-2008)

lCode for Quality Acceptance of the Intelligent Building Engineering (GB 50339-2003)

lCode for Quality Acceptance of Electric Engineering Construction in Building (GB

50303-2002)

lTechnical Specification for Construction and Acceptance of Telecommunication Conduit

Engineering (GB 50374-2006)

International Standards

lGeneric Cabling for Customer Premises (ISO/IEC 11801)

lCommercial Building Telecommunications Cabling Standard (EIA/TIA 568)

lCommercial Building Standard for Telecommunication Pathways and Spaces (EIA/TIA

569)

lAdministration Standard for Commercial Telecommunications Infrastructure (EIA/TIA

606)

lGrounding and Bonding Requirements for Telecommunications in Commercial

Buildings (EIA/TIA 607)

lGeneric Cabling Systems for Information Technology (EN 50173)

lCabling Installation for Information Technology (EN 50174)

Bending radius

lThe bending radius of a power cable or a protection ground (PGND) cable is at least five

times the diameter of the cable.

lThe bending radius of an optical cable is at least 20 times the diameter of the optical

cable, and the minimum bending radius of the branch at each end of the optical cable is

30 mm.

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

cable.

Cable Binding

lCables of the same type are bound together.

lDifferent types of cables must be separately routed with a minimum spacing of 30 mm

and cannot be entangled or crossed.

lThe cables are bound tightly and neatly and the cable sheath is intact.

lThe cable ties face the same direction and all cable ties bound at similar positions must

be in a straight line.

lThe extra length of each indoor cable tie must be cut off. A slack of 5 mm is reserved for

each outdoor cable tie. All cut surfaces have no sharp edges.

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

installed.

Safety

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lThe steel pipe or fire-resistant rigid polyvinyl chloride pipe should be used for the cable

duct or for routing cables. The cross-sectional usage of the cable duct should be 30% to

50% and that of the pipe for routing cables should be 25% to 30%.

lCables are placed away from sharp objects or wall burrs. If these positions are inevitable,

protection pipes are required for the cables.

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

between cables and heat sources.

lCables are routed away the cooling vents of the RHUB.

lA clearance is reserved at turns of a cable or the position close to a device, facilitating

cable and device maintenance. The recommended clearance is about 0.1 m.

Requirements for Special Cables

Ethernet Cable

lA maximum of 100 Ethernet cables can be bundled if no PVC pipes are used. If pipes are

used, a maximum of 24 Ethernet cables can be led through a pipe. In this case, ensure

that 1/3 space inside the pipes must be vacant.

lThe point at which an Ethernet cable is bundled must be spaced 400 mm or less from the

Ethernet port on an RHUB.

lFor the RHUB used in the elevator engine room on the rooftop, generator set for the

subway engine, and equipment room with central air conditioning, Ethernet cables must

be led through metallic conduits that are reliably grounded at both ends.

Power cable

lPositions for routing power cables meet requirements of the engineering design.

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

made.

lCables are routed in an untangled and orderly fashion.

PGND cable

lPGND cables are buried in the ground or routed indoors. They cannot be routed

overhead before they are routed into the equipment room.

lOuter conductors of coaxial cables and both ends of the shield layers on shielded cables

are in proper electrical contact with the metal surface of the equipment to which they are

connected.

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

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

lFuses or switches are not allowed on PGND cables.

lOther devices cannot be used for electrical connections of PGND cables.

lAll the metal parts in the equipment are reliably connected to the ground terminal.

Optical cable

lCables are routed in an untangled and orderly fashion.

lOptical fibers cannot be bound at turns.

lOptical fibers cannot be stretched with too much force or stepped on, and they are far

away from sharp objects. Heavy objects cannot be placed on optical cables.

lWhen optical cables are routed, the extra length of the cables is coiled around special

devices, such as a fiber coiler.

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lEven strength is applied when optical cables are coiled and optical cables cannot be bent

in a forcible manner.

lVacant optical connectors are covered with dust-proof caps.

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

cabinet.

lIf optical cables need to be routed on the tower platform, the optical cables are routed

along the inner side of the guard rail and the distance between the guard rail and the

cable is the shortest one.

lIf optical cables need to be routed close to a device on the tower, the optical cables are

secured to the guard rail or pole with cable clips and the device cannot be far away from

the position for securing the optical cables.

lIf the optical cable close to a device on the tower is too long, the optical cables are

wrapped and secured to the tower.

6.4.2 Cable List

This section describes the connector types and connections of the RHUB cables.

Table 6-3 lists RHUB cables.

Table 6-3 RHUB cable list

Cable One End The Other End

Connector Connected

to...

Connector Connected to...

PGND cable OT terminal

(M4, 6 mm2

[0.009 in.2])

Ground screws

on the RHUB

OT terminal

(M6, 6 mm2

[0.009 in.2])

Ground terminal

on the external

ground bar

Power

Supply Cable

C13 female

connector

AC power

input socket on

the RHUB

3-pin connector External power

input socket

CPRI Optical

Fiber

DLC connector CPRI port on

the LBBP,

WBBP or

UBBP in the

BBU

DLC connector CPRI0 or CPRI1

port on the

RHUB

CPRI port on

the LBBP,

WBBP or

UBBP in the

BBU

DLC connector CPRI port on the

DCU

CPRI port on

the DCU

CPRI0 or CPRI1

port on the

RHUB

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Cable One End The Other End

Connector Connected

to...

Connector Connected to...

CPRI0 or

CPRI1 port on

the RHUB

DLC connector CPRI0 or CPRI1

port on the

RHUB

CPRI port on

the LBBP,

WBBP or

UBBP in the

BBU

FC connector,

SC connector, or

LC connector

ODF

CPRI port on

the DCU

CPRI0 or

CPRI1 port on

the RHUB

Ethernet

Cable

RJ45 connector CPRI_E0~CP

RI_E7 port on

the RHUB

RJ45 connector CPRI_E0~CPRI_

E1 port on the

pRRU

RJ45 connector CPRI_E0~CP

RI_E7 port on

the RHUB

RJ45 connector Protect port on

the PoE surge

protector 2

RJ45 connector Surge port on

the PoE surge

protector 2

RJ45 connector Surge port on the

PoE surge

protector 1

RJ45 connector Protect port on

the PoE surge

protector 1

RJ45 connector CPRI_E0~CPRI_

E1 port on the

pRRU3902

(Optional)

Alarm Cable

RJ45 connector EXT_ALM

port on the

RHUB

Bare end Alarm signal port

of the monitored

equipment

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NOTE

lIf one end of the CPRI cable is connected to the DLC connector, the other end connects the BBU,

DCU or RHUB through the DLC connector. If one end of the CPRI cable is connected to the ODF

adapter, the other end connects the BBU or RHUB through a connector corresponding to the adapter.

The connectors include the FC connector, SC connector, and LC connector.

lThe Extender can be used to lengthen the distance between the RHUB and the pRRU connected

using the Ethernet cable. If the Extender is used, the Ethernet cable is divided into two parts, one

between the RHUB and the Extender and the other between the Extender and the pRRU.

lWhen the RHUB and the pRRU connected using the Ethernet cable. If the Extender is used,

lIn the indoor scenario, the Ethernet cable is divided into two parts, one between the RHUB

and the Extender and the other between the Extender and the pRRU.

lIn the outdoor scenario (only pRRU3901 and pRRU3902) , the Ethernet cable is divided into

two parts, one among RHUB-PoE surge protector 2- PoE surge protector 3-Extender and the

other among the Extender- PoE surge protector 4- PoE surge protector 1-pRRU.

6.4.3 Cable Connections

This section describes the cable connections for an RHUB.

Figure 6-28, Figure 6-29 shows the cable connections for an RHUB. The port of ETH are

reserved.

Figure 6-28 Cable connections for an RHUB (indoor)

(1) CPRI optical cable (2) Alarm cable (3) Ethernet cable

(4) Power cable (5) PGND cable -

NOTE

The Extender can be used to lengthen the distance between the RHUB and the pRRU connected using

the Ethernet cable. If the Extender is used, the Ethernet cable is divided into two parts, one between the

RHUB and the Extender and the other between the Extender and the pRRU.

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Figure 6-29 Cable connections for an RHUB (outdoor)

(1) CPRI optical cable (2) Alarm cable (3) Ethernet cable

(4) Power cable (5) PGND cable -

NOTE

The Extender can be used to lengthen the distance between the RHUB and the pRRU connected using

the Ethernet cable. If the Extender is used, the Ethernet cable is divided into two parts, one between the

RHUB and the Extender and the other between the Extender and the pRRU.

6.4.4 Cable Installation Process

This section describes the process of installing RHUB cables.

Figure 6-30 shows the RHUB cable installation process.

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Figure 6-30 RHUB cable installation process

6.4.5 Installing PGND Cable

An RHUB PGND cable ensures proper grounding of an RHUB.

Prerequisites

The OT terminals at both ends of the PGND cable are prepared.

Context

The yellow and green or green PGND cable is a single cable. The cross-sectional area of the

PGND cable is 6 mm2 (0.009 in.2). Both ends of the cable are OT terminals, as shown in

Figure 1.

Figure 6-31 Exterior of a PGND cable

(1) OT terminal (6 mm2 [0.009 in.2], M4) (2) OT terminal (6 mm2 [0.009 in.2], M6)

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NOTE

lIf the PGND cable is provided by the customer, a copper-core cable with a minimum cross-sectional

area of 6 mm2 (0.009 in.2) or 10 AWG is recommended.

lThe OT terminals at both ends of the PGND cable are assembled at the site.

lThe M6 OT terminal has the default size. You can replace it with another OT terminal of the

expected size based on the site requirement.

NOTICE

lEnsure proper grounding of the RHUB using a PGND cable.

lWhen installing the PGND cable, tightly press the OT terminal in the correct direction, as

shown in Figure 6-32.

Figure 6-32 Correct direction of an OT terminal for the PGND cable

Procedure

Step 1 Route the PGND cable by referring to 6.4.1 Requirements for Cable Layout.

Step 2 Use a torque screwdriver or Phillips screwdriver to secure the M4 OT terminal at one end of

the PGND cable to the ground screw on the RHUB panel with a torque of 1.4 N•m. If the OT

terminal is a one-hole OT terminal, connect it to the ground screw on the lower part of the

RHUB panel, as shown in Figure 6-33.

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Figure 6-33 Installing an RHUB PGND cable

Step 3 Use a torque screwdriver or Phillips screwdriver to secure the M8 OT terminal at one end of

the PGND cable to the wiring terminal on the ground bar at the site with a torque of 1.4 N•m.

----End

Follow-up Procedure

1. Route the cable, and then use a cable tie to bind the cable. For details, see 6.4.1

Requirements for Cable Layout.

2. Label the installed cable. For details, see section 14.4 Attaching an L-Shaped Label.

6.4.6 Installing Ethernet Cable

This section describes how to install an Ethernet cable.

Prerequisites

lThe Ethernet cable must be of Category 5e (enhanced) or higher. In addition, its cross-

sectional area must be 24 AWG or larger and frame spread rating must be CM or higher.

lThe Ethernet cables can be straight-through cables or crossover cables.

lWith the internal PoE module providing power, the maximum length of an Ethernet

cable is 100 m. With the Extender, the distance of the pRRU and RHUB can be extended

by the Extender up to a total distance of 200 m.

lEthernet cables are not delivered, and they must be prepared onsite. You need to use a

network cable tester to test the Ethernet cable connection.

Context

The Ethernet cable has the following functions:

lProvides power supply for the pRRU when connected to the CPRI_E0 port on the

pRRU.

lTransmits CPRI signals between an RHUB and a pRRU.

For details about the cable connections in the different scenarios, see 6.4.3 Cable

Connections. The Ethernet cable connections between RHUB and pRRUs are the same. The

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following section describes the connections between RHUB-Extender-pRRU3901 as an

example.

In the outdoor scenario, PoE surge protector is needed to provide surge protection for the

Ethernet ports. For details about the installation of PoE surge protector, see 10 (Optional)

Installing the PoE Surge Protector and Cables.

Procedure

Step 1 Make the Ethernet cables.

1. Assemble an RJ45 connector and an Ethernet cable by following instructions in

Assembling the Unshielded RJ45 Connector and the Ethernet Cable of Installation

Reference.

NOTE

Follow pin assignment instructions described in section Ethernet Cable in DBS3900 LampSite

Hardware Description to assemble the unshielded RJ45 connector and the Ethernet cable. Otherwise,

the transmission signal quality deteriorates and CPRI links may be disconnected.

2. Check whether the made RJ45 connector is qualified by following instructions in

Checking the Appearance of Metal Contact Strips.

3. To complete the assembly of the other end, repeat Step 1.1 and Step 1.2.

4. Check whether the touch points on the connectors at both ends are normally conducted

and well contacted and whether the connections are correct by following instructions in

Testing the Connection of Assembled Cables of Installation Reference.

Step 2 Connect the RJ45 connector at the other end of the Ethernet cable to any port ranging from

CPRI_E0 to CPRI_E7 on the RHUB panel based on the engineering design.

Step 3 Optional: Connect the RJ45 connector at the other end of the Ethernet cable to the output

port of the Extender. Then, connect the RJ45 connector at one end of another Ethernet cable

to the input port of the Extender.

If the Extender is used, the Ethernet cable is divided into two parts, one between the RHUB

and the Extender and the other between the Extender and the pRRU.

Step 4 Remove the dustproof cap of the CPRI_E0 port on the pRRU.

Step 5 Connect the RJ45 connector at one end of the Ethernet cable to the CPRI_E0 port on the

pRRU panel, as shown in Figure 6-34, Figure 6-35.

Figure 6-34 Install an Ethernet cable between an RHUB and a pRRU3901

(1) Ethernet cable (2) CPRI_E0 port on the pRRU3901

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Figure 6-35 Install an Ethernet cable between an RHUB and a pRRU3902 or pRRU3911

(1) Ethernet cable (2) CPRI_E0 port on the pRRU3902

Figure 6-36 Install an Ethernet cable between an RHUB and a pRRU3907

(1) Ethernet cable (2) CPRI_E0 port on the pRRU

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----End

Follow-up Procedure

1. Route the cable, and then use a cable tie to bind the cable. For details, see 6.4.1

Requirements for Cable Layout.

2. Label the installed cable. For details, see section 14.4 Attaching an L-Shaped Label.

6.4.7 Installing CRPI Optical Cables

Optical fibers can be used to interconnect BBU and RHUBs, or cascade RHUBs.

Context

lMulti-mode optical modules for CPRI ports are labeled MM and each has a black or gray

puller.

lSingle-mode optical modules are labeled SM and each has a blue puller.

lFor details about the connection of CPRI optical cables, see CPRI Topology in

DBS3900 LampSite Technical Description.

lAn optical module to be installed must match the rate of its corresponding port.

NOTE

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

Therefore, you must insert a fiber optic cable into an unpacked optical module within 20 minutes.

Procedure

Step 1 Install an optical module, as shown in Figure 6-37 and Figure 6-38.

1. Remove the dust-proof cap from the CPRI port on the RHUB panel.

2. Remove the dust-proof cap on the optical module.

3. Lower the puller of the optical module.

4. Insert the optical module into the CPRI port on the RHUB, DCU, BBU or ODF.

5. Raise the puller of the optical module.

Figure 6-37 Removing the dust-proof cap from a port

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Figure 6-38 Installing an optical module

Step 2 Install a CPRI optical cable, as shown in Figure 6-39.

1. Remove the dust-proof cap from the optical cable connector.

2. Install the optical cables by referring to Table 6-4.

Table 6-4 CPRI optical cable connections

One End The Other End

Connect

Connected to Connector Connected to

DLC

connecto

BBU/LBBP&WBBP/CPRI

port

DLC connector CPRI0 or CPRI1 port on

the RHUB

BBU/LBBP&WBBP/CPRI

port

DLC connector CPRI port on the DCU

CPRI port on the DCU CPRI0 or CPRI1 port on

the RHUB

CPRI0 or CPRI1 port on the

RHUB

DLC connector CPRI0 or CPRI1 port on

the RHUB

BBU/LBBP&WBBP/CPRI

port

FC, SC, or LC

connector

ODF

CPRI port on the DCU

CPRI0 or CPRI1 port on the

RHUB

NOTE

lIn sharing BBUs with Macro Networks scenario, RHUBs share only main control boards with with

RF modules on macro base stations, not baseband processing units.

lIf one end of the CPRI cable is connected to the DLC connector, the other end connects the BBU or

RHUB through the DLC connector. If one end of the CPRI cable is connected to the ODF adapter,

the other end connects the BBU/DCU or RHUB through a connector corresponding to the adapter.

The connectors include the FC connector, SC connector, and LC connector.

lWhen connecting the CPRI cable to the TX and RX ports of the optical module through connectors

in a cross manner, ensure that one end of a core of the CPRI cable is connected to the TX port and

the other end is connected to the RX port. Figure 6-39 shows how to install a CPRI optical cable for

connecting the BBU and RHUBs.

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Figure 6-39 Installing an CRPI optical cable

----End

Follow-up Procedure

1. Route the cable, and then use a cable tie to bind the cable. For details, see 6.4.1

Requirements for Cable Layout.

2. Label the installed cable. For details, see section 14.4 Attaching an L-Shaped Label.

6.4.8 Installing Alarm Cable (Optional)

An RHUB alarm cable transmits dry node alarm signals.

Prerequisites

Connectors for an alarm cable are prepared.

Context

Figure 6-40 shows the exterior of an RHUB alarm cable. 6.4.2 Cable List shows the

installation position on both ends of the RHUB cable.

Figure 6-40 RHUB alarm cable

Procedure

Step 1 Connect the RJ45 connector on one end of the alarm cable to the EXT_ALM port on the

RHUB.

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Step 2 Connect the other end of the alarm cable to the alarm cable port on the device to be

monitored.

----End

Follow-up Procedure

1. Route the cable, and then use a cable tie to bind the cable. For details, see 6.4.1

Requirements for Cable Layout.

2. Label the installed cable. For details, see section 14.4 Attaching an L-Shaped Label.

6.4.9 Installing Power Cable

The RHUB power cable provides 110 V AC/220 V AC power supply for the RHUB.

Context

Table 6-5 lists the recommended configurations of upper-level circuit breakers and power

cables for a RHUB.

Table 6-5 Configurations of upper-level circuit breakers and power cables

Power Supply Upper-level AC Circuit

Breaker (For a single

RHUB)

Cross-Sectional Area of

the Input Power Cable

220 V AC single-phase ≥ 6 A 1 mm2

110 V AC single-phase ≥ 10 A 1.25 mm2

Procedure

Step 1 Route the power cable by referring to 6.4.1 Requirements for Cable Layout.

Step 2 Connect the power connector on the X1 end to the AC power input port on the RHUB panel,

as shown in Figure 6-41.

Step 3 Connect the power connector on the X2 end to the external power supply port, as shown in

Figure 6-41.

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Figure 6-41 Installing an RHUB power cable

----End

Follow-up Procedure

1. Route the cable, and then use a cable tie to bind the cable. For details, see 6.4.1

Requirements for Cable Layout.

2. Label the installed cable. For details, see section 14.4 Attaching an L-Shaped Label.

6.5 Checking the RHUB Hardware Installation

After an RHUB is installed, check the installation of hardware including the devices and

related cables.

Table 6-6 lists the hardware installation checking items.

Table 6-6 Hardware installation checking list

No. Item

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

space requirement.

2 Ensure that the RHUB is properly installed.

3 The surface of the RHUB is neat and clean. The external paint is intact. The

labels, tags, and nameplates are correct, legible, and complete.

Table 6-7 lists the checking list of the power cable and PGND cable connections.

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Table 6-7 Checklist for power cable and PGND cable connections

No. Item

1 The power cables and PGND cables comply with the requirements of local

regulations.

2 The power cables or the PGND cables are not inversely connected or short-

circuited.

3 The power cables and PGND cables are bound separately from other cables.

4 Labels are attached to both ends of the power cables, PGND cables, optical

fibers, and Ethernet cables.

5 The power cables and PGND cables are intact.

6 The power cables and PGND cables have no weld nugget.

7 No breaking device such as a switch or fuse lies in the electric connection of

the grounding system.

8 The redundant part of PGND cable is stripped off.

9 The lugs at both ends of the power cable or PGND cable are securely soldered

or crimped.

10 The flat washers and spring washers are fixed securely and closely at all the

wiring terminals.

11 The work GND cable and PGND cable of the BTS share a group of grounding

conductors with the lightning and GND cables of the building.

Table 6-8 lists the check items of the signal cable connection.

Table 6-8 Checklist for the signal cable connection

No. Item

1 The connectors of the signal cables must securely connected.

2 The connectors of the signal cables are intact.

3 The signal cables are intact.

4 The cable ties are evenly spaced. The signal cables are bound neatly with cable

ties to proper tightness, and arranged at even intervals in the same direction.

5 The extra length of the cable ties is cut and removed. The cut surfaces of the

indoor cables are smooth and have no sharp edges.

6 The cable layout facilitates maintenance and expansion.

7 Correct and clear labels are attached to both ends of the signal cables.

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No. Item

8 The distance between the bundled fiber tails and the RHUB panel is less than

70 mm.

Table 6-9 lists the checking items for other cable connections.

Table 6-9 Checklist for other cable connections

No. Item

1 The connectors of the other cables must securely connected.

2 Labels on the cables are legible and bound based on the engineering

requirements. The cables must be bound tightly and neatly. The sheaths of the

cables must not be damaged.

3 Positions for routing the cables must meet requirements of the engineering

design.

6.6 Power-on Check on an RHUB

This section describes the power-on check on the RHUB after the RHUB hardware is

installed and checked.

Context

After the RHUB and pRRUs are installed and connected to each other, power on them no

matter whether the BBU is installed.

DANGER

Power-on check involves high-voltage operation. Be cautious when conducting the power-on

check. Any direct contact with the input voltage or indirect contact through damp objects

might endanger your life.

Procedure

Step 1 Measure the RHUB earth resistance.

If... Then...

The RHUB earth resistance is less than

10 ohms

Go to Step 2.

The RHUB earth resistance is equal to

or larger than 10 ohms

Find out the cause and ensure that the resistance

meets requirement. Then, go to Step 2.

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Step 2 Measure the voltage of the RHUB.

If... Then...

The external power supply ranges from

100 V AC to 240 V AC

Go to Step 3.

The external power supply does not

range from 100 V AC to 240 V AC

Find out the cause and ensure that the resistance

meets requirement. Then, go to Step 3.

Step 3 Power on the RHUB. Wait 3 to 5 minutes, check the status of the RUN indicator of the RHUB

after the RHUB runs properly.

If the Status of

the RUN

Indicator...

It Indicates that... Then...

Steady on The power supply is

normal while the board

is faulty.

Power off the RHUB, and power on it again

after rectifying the board fault.

Steady off There is no power input

or the board is faulty.

Power off the RHUB, and check the power

input again. Rectify the board faulty and

power on the RHUB again if the power

input is normal.

On for 1s and off

for 1s

The devices work

properly.

End the operation.

On for 0.125s

and off for 0.125s

The board software is

being uploaded.

Power off the RHUB if the uploading is not

finished in 5 minutes, and check whether

the configuration file is correct. Power on

the RHUB again after the fault is rectified.

NOTE

If an RHUB is not connected to any BBU, the RHUB is considered normally powered on when any indicator

on the RHUB is on.

----End

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7 Installing a pRRU3901

About This Chapter

This chapter describes the pRRU3901 installation process. The pRRU3901 can have two

transmission ports (plus PWR port) or three transmission ports (plus PWR port or no PWR

port). Unless otherwise specified, this document uses the pRRU3901 with three transmission

ports plus no PWR port as an example.

7.1 Information About the Installation

This section describes the information that you must be familiar with before installing a

pRRU3901, including the pRRU3901 product family, installation scenarios, installation space

and environment requirements.

7.2 Obtaining the MAC Address (Optional)

Before installing a pRRU3901, record the media access control (MAC) address, which will be

used during pRRU3901 commissioning. This section applies only when a pRRU3901 with

three transmission ports is configured with a Wi-Fi daughter board.

7.3 Installation Process

This section describes the pRRU3901 installation process, which involves installing a

pRRU3901, and cables, checking the pRRU3901 hardware installation, and powering on the

pRRU3901.

7.4 Installing a pRRU3901

This section describes the pRRU3901 installation process. A pRRU3901 can be installed on a

wall, ceiling, indoor metal pole, or standard keel, but not on an aluminum panel or a non-

standard keel.

7.5 Installing pRRU3901 Cables

This section describes the procedure of installing the pRRU3901 cables.

7.6 Checking the pRRU3901 Hardware Installation

pRRU3901 hardware installation checking includes hardware and cable installation checking.

7.7 Powering on the pRRU3901

This section describes the power-on check on the pRRU3901 after the pRRU3901 hardware is

installed and checked.

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7.1 Information About the Installation

This section describes the information that you must be familiar with before installing a

pRRU3901, including the pRRU3901 product family, installation scenarios, installation space

and environment requirements.

7.1.1 Product Family

This chapter describes the configurations and functions of the pRRU3901 components.

Table 7-1 lists the pRRU3901 product family.

Table 7-1 pRRU3901 product family

Category Equip

ment

Optional or

Mandatory

Quantity Function

Main

equipment

pRRU

3901

Mandatory 1 Processes the radio

frequency signals.

Extern

antenn

Optional 2 Provides external

antennas for the

pRRU3901.

NOTE

Configure two external

antennas for each RF

daughter board.

Auxiliary

device

Mounti

ng kits

Mandatory 1 Supports the pRRU3901

installation on a wall,

pole, ceiling, or keel.

The mounting kits vary

with the pRRU3901

installation mode.

Cabine

Optional lNone and one

Extender is

needed

lYes and two

Extenders are

needed

Install the pRRU3901

and Extender in the

outdoor scenario.

Extend

Optional 1 or 2

NOTE

The quantity depends

on the number of

Ethernet cables in use.

Extends the distance

between the pRRU3901

and RHUB.

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7.1.2 Installation Scenario

The pRRU3901 can be installed on a wall, ceiling, pole, or keel. The following table describes

the installation in different scenarios.

Installing a pRRU3901 on a wall

NOTE

lThe pRRU3901 must keep a minimum of 0.5 m away from the power equipment with interference,

and keep a minimum of 2 m away from the source with radiation.

lThe pRRU3901 must keep away from a metal wall to avoid the impact on the antenna performance.

When a pRRU3901 is installed on a wall, installation modes vary with the quality of wall, as

shown in Table 7-2.

Table 7-2 Wall-mounted suggestion

Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a wall by

drilling holes

For details, see

7.4.2

Installing a

pRRU3901 on

a Wall.

lThe wall can

bear a load at

least four times

the weight of a

pRRU3901.

lThe screws must

be tightened with

a torque of 10

N·m. This

ensures the

screws work

properly and the

wall remains

intact without

cracks in it.

1. Plate

2. Screw (M6X50)

3. Plastic expansion

sleeve

4. Flat washer

Installing the

pRRU on a

wall using a V

clamp through

an attachment

plate

For details, see

7.4.5

Installing a

pRRU3901 on

a Plate.

lThe wall can

bear a load at

least four times

the weight of a

pRRU3901.

lThe thickness of

the wall is less

than 80 mm.

1. Plate

2. V clamp

3. Bolt (M6X80)

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Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a wall using a

plate on a

metal wall

The wall cannot bear

a load at least four

times the weight of

the pRRU. For

example, EPS walls,

MDF walls, or walls

cannot be drilled.

The plate is prepared by

customers.

Installing a pRRU3901 on a ceiling

When a pRRU3901 is installed on a ceiling, installation modes vary with the quality of the

ceiling, as shown in Table 7-3.

Table 7-3 Ceiling-mounted suggestion

Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a ceiling by

drilling holes

For details, see

7.4.3

Installing a

pRRU3901 on

a Ceiling.

lThe ceiling, such

as a concrete

ceiling, can bear

a load at least

four times the

weight of the

pRRU3901.

lThe screws must

be tightened with

a torque of 10

N·m. This

ensures the

screws work

properly and the

ceiling remains

intact without

cracks in it.

1. Plate

2. Screw (M6X50)

3. Plastic expansion

sleeve

4. Flat washer

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Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a ceiling using

a V clamp

through an

attachment

plate

For details, see

7.4.5

Installing a

pRRU3901 on

a Plate.

lThe ceiling, such

as a concrete

ceiling, can bear

a load at least

four times the

weight of the

pRRU3901.

lThe thickness of

the ceiling is less

than 80 mm.

1. Plate

2. V clamp

3. Bolt (M6X80)

Installing the

pRRU3901 on

a pole

For details, see

7.4.4

Installing a

pRRU3901 on

a Pole.

A pole under the

ceiling can bear a

load at least four

times the weight of

the pRRU3901.

For details, see Table

7-4.

For details, see Table

7-4.

Installing the

pRRU3901 on

a keel

For details, see

7.4.6

Installing a

pRRU3901 on

a Keel.

A keel under the

ceiling can bear a

load at least four

times the weight of

the pRRU3901.

For details, see Table

7-5.

For details, see Table

7-5.

Installing the pRRU3901 on a pole

When a pRRU3901 is installed on a pole, installation modes vary with the diameter of the

pole, as shown in Table 7-4.

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Table 7-4 Pole-mounted suggestion

Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a pole

For details, see

7.4.4

Installing a

pRRU3901 on

a Pole.

The diameter of the

pole ranges from 30

mm to 70 mm.

1. Plate

2. V clamp

3. Bolt (M6X80)

The diameter of the

pole ranges from 70

mm to 110 mm.

1. Plate

2. Hose clamp, which is

prepared by the

customer

Installing the pRRU3901 on a keel

The pRRU3901 can be installed on a keel of U-shape, T-shape, or H-shape. For the keels of

other shapes, they are determined based on the onsite requirements.

Table 7-5 Keel-mounted installation suggestion

Installation

Mode

Requirements Mounting Brackets Installation

Diagram

Installing the

pRRU3901 on

a keel

For details, see

7.4.6

Installing a

pRRU3901 on

a Keel.

The keel is in U-

shape, T-shape, H-

shape, or other

shapes.

1. Plate

2. V clamp

3. Bolt (M6X80)

shows the pRRU

installed on a U-

shaped keel.

pRRU3901 cabinet

In the outdoor scenario, pRRU3901 should be installed in the cabinet.

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Table 7-6 Cabinet installation suggestion

Installation

Mode

Requirement

Mounting Brackets Installation Diagram

Installing the

cabinet

For details,

see7.4.7

Installing the

Cabinet

Remove the

housing before

installing a

pRRU3901 in

the cabinet.

1. Plate

7.1.3 Space Requirements

This chapter describes the space requirements of the pRRU3901.

When the pRRU3901 is installed on a wall, ceiling, pole or keel, the minimum space is

required for easy cabling and O&M. Based on the engineering practice, the recommendation

for the installation space is provided.

NOTE

During installation, a minimum clearance of 2 m must be reserved between the pRRU3901 working on

the 2.6 GHz band and the Wi-Fi module if they need to process services concurrently.

Figure 7-1 shows the recommended space requirements of the pRRU3901.

Figure 7-1 Recommended space requirements of the pRRU3901

The recommended space for installing a single pRRU3901 is described as follows:

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lAt least 300 mm above the pRRU3901 is reserved for maintenance.

lAt least 300 mm under the pRRU3901 is reserved for cabling.

lAt least 300 mm on the left of the pRRU3901 is reserved for maintenance.

lAt least 300 mm on the right of the pRRU3901 is reserved for maintenance.

lAt least 400 mm in front of the pRRU3901 is reserved for maintenance

lAt least 40 mm on the back of the pRRU3901 is reserved for ventilation.

In the outdoor scenario, there is no space requirement for the pRRU3901 installing in the

cabinet.

7.1.4 Installation Environment Requirements

The installation environment of a pRRU3901 involves the running environment specifications

for the pRRU3901 and other specifications.

Running Environment Specifications

Table 7-7 shows the environment specifications for the pRRU3901 installed indoors.

Table 7-7 pRRU3901 environment specifications

Specificat

ions

Condition Remarks

Operating

temperatur

lIndoor: - 5 °C to + 40 °C

lOutdoor: - 20 °C to + 40 °C

Relative

humidity

5% RH to 95% RH -

Altitude - 60 m to + 1800 m Works properly.

1800 m to 4000 m Above the 1800 m altitude, the

maximum operating temperature

decreases by 1 °C each time the

altitude increases by 220 m.

Other Running Environment Specifications

lThe pRRU3901 cannot be installed at an air outlet of the heat dissipation box of an air

conditioner or other heat-generating appliances.

lThe pRRU3901 cannot be installed near a strong heat source.

lThe pRRU3901 cannot be installed in a position with water dripping, such as outdoor

equipment of air conditioners, pipe, and leaking or dripping roofs.

lThe installation position must be far from rains. If the pRRU3901 is installed on a wall,

there must be no window on either side of the wall.

lThe installation position must be far away from high voltage, highly corrosive devices,

flammable or explosive substances, and electromagnetic interference such as power

stations, high-voltage substations, and wired TV towers.

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lThe pRRU3901 must be installed in a dry, ventilating, and dust-proof place.

lIf the pRRU3901 is installed in parking areas or basements, the installation position must

be well-ventilated.

7.2 Obtaining the MAC Address (Optional)

Before installing a pRRU3901, record the media access control (MAC) address, which will be

used during pRRU3901 commissioning. This section applies only when a pRRU3901 with

three transmission ports is configured with a Wi-Fi daughter board.

Context

The MAC address indicates the IP address through which a device can be reached.

Procedure

Step 1 Remove the backup WIFI MAC label from the front housing of the pRRU3901 and keep

them secure, as shown in Figure 7-2.

NOTE

lDo not remove the WIFI MAC label on the side of the pRRU3901 housing.

lBefore removing the backup WIFI MAC label, photograph it.

Figure 7-2 Removing backup WIFI MAC label

Step 2 Save the MAC according to 14.1 MAC Collection Template, and report it to the pRRU3901

commissioning personnel.

----End

7.3 Installation Process

This section describes the pRRU3901 installation process, which involves installing a

pRRU3901, and cables, checking the pRRU3901 hardware installation, and powering on the

pRRU3901.

Figure 7-3 shows the pRRU3901 installation process.

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Figure 7-3 pRRU3901 installation process

7.4 Installing a pRRU3901

This section describes the pRRU3901 installation process. A pRRU3901 can be installed on a

wall, ceiling, indoor metal pole, or standard keel, but not on an aluminum panel or a non-

standard keel.

NOTE

Note the following when installing the pRRU3901:

lThe pRRU3901 cannot be grounded. If the pRRU3901 is grounded but the RHUB connected to this

pRRU3901 is not, the pRRU3901 may fail to be powered on.

lA minimum distance of 50 cm must be reserved between the pRRU3901 and the incandescent lamp.

lThe installation spacing between the pRRU3901 and the temperature sensor must be greater than 50

cm.

lIt is good practice to install the pRRU3901 on materials that can tolerate a temperature higher than

65°C and have an ignition point higher than 70°C.

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7.4.1 pRRU3901 Mounting Kits

This section describes the pRRU3901 mounting kits.

Figure 7-4 shows the exterior of the pRRU3901 mounting kits.

Figure 7-4 pRRU3901 mounting kits

(1) V clamp (2) Mounting bracket (3) Screw (M6x50)

(4) Plastic expansion sleeve (5) Bolt (M6x80) (6) Flat washer

The following figure shows the specifications of the mounting bracket.

Figure 7-5 Mounting bracket specifications

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7.4.2 Installing a pRRU3901 on a Wall

This section describes how to install a pRRU3901 on an indoor wall. If a wall indoors has

adequate load bearing capacity and installation space, it is good practice to install the

pRRU3901 on the wall. If the wall does not have adequate load bearing capacity, choose an

installation mode based on site requirements.

Context

NOTICE

This section describes only the wall-mounted installation in which mounting kits are directly

installed on the wall without auxiliary devices. The procedure for other wall-mounted

installation modes is similar.

Procedure

Step 1 Determine the position for installing the pRRU3901 based on the construction blueprint and

the clearance requirements.

NOTE

For details about the clearance requirements, see 7.1.3 Space Requirements.

Step 2 Place the mounting bracket in the installation position against the wall. Then, level the

mounting bracket and use a marker to mark two anchor points. See Figure 7-6.

Figure 7-6 Anchor points on the pRRU3901 mounting bracket (unit: mm)

(1) Wall (2) Mounting bracket (3) Anchor point

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CAUTION

To prevent inhalation or eye contact with dust, take adequate preventive measures when

drilling holes.

Step 3 Use a hammer drill with φ8 bore to drill holes at the marked anchor points, as shown in

Figure 7-7. Use a vacuum cleaner to clean the dust inside and around the holes and measure

the distance between them. If they are inaccurately positioned, re-measure and re-drill the

holes. Then, use a rubber mallet to hit a plastic expansion sleeve into each hole.

Figure 7-7 Drilling holes and installing expansion bolts

Step 4 Lead the M6x50 screws through the washers, and then through the drilling holes on the

mounting bracket to the plastic expansion sleeves, and torque the screws to 5 N•m, as shown

in Figure 7-8.

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Figure 7-8 Installing the mounting bracket

NOTE

If the screws cannot be tightened using a Phillips screwdriver, use a hex key or an electric screwdriver to

assist the installation.

Step 5 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and

then press the pRRU3901 downwards until a click is heard. See Figure 7-9.

NOTE

It is good practice to perform the installation from the side view to promptly align the hooks with the

mounting holes.

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Figure 7-9 Installing the pRRU3901 on a wall

----End

7.4.3 Installing a pRRU3901 on a Ceiling

This section describes how to install a pRRU3901 on the ceiling, such as the concrete ceiling,

when the ceiling has adequate load bearing capacity and installation space.

Context

NOTICE

If the pRRU3901 is installed on a ceiling, the temperature of the ceiling may increase by a

maximum of 30 degrees. Therefore, whether a pRRU3901 can be installed on a ceiling

depends on the ceiling material.

Procedure

Step 1 Determine the position for installing the pRRU3901 based on the construction blueprint and

the clearance requirements.

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NOTE

For details about the clearance requirements, see 7.1.3 Space Requirements.

Step 2 Place the mounting bracket in the installation position against the ceiling. Then, level the

mounting bracket and use a marker to mark two anchor points. See Figure 7-10.

Figure 7-10 Anchor points on the pRRU3901 mounting bracket (unit: mm)

(1) Ceiling (2) Mounting bracket (3) Anchor point

CAUTION

To prevent inhalation or eye contact with dust, take adequate preventive measures when

drilling holes.

Step 3 Use a hammer drill with φ8 bore to drill holes at the marked anchor points, as shown in

Figure 7-11. Use a vacuum cleaner to clean the dust inside and around the holes and measure

the distance between them. If they are inaccurately positioned, re-measure and re-drill the

holes. Then, use a rubber mallet to hit a plastic expansion sleeve into each hole.

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Figure 7-11 Drilling holes and installing expansion bolts

Step 4 Lead the M6x50 screws through the washers, and then through the drilling holes on the

mounting bracket to the plastic expansion sleeves, and use a torque screwdriver to torque the

screws to 5 N•m, as shown in Figure 7-12.

Figure 7-12 Installing the mounting bracket

NOTE

If the screws cannot be tightened using a Phillips screwdriver, use a hex key or an electric screwdriver to

assist the installation.

Step 5 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and

then press the pRRU3901 downwards until a click is heard. See Figure 7-13.

NOTE

It is good practice to perform the installation from the side view to promptly align the hooks with the

mounting holes.

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Figure 7-13 Installing a pRRU3901 on a ceiling

----End

7.4.4 Installing a pRRU3901 on a Pole

This section describes how to install a pRRU3901 on a metal pole indoors.

Procedure

Step 1 Determine the position for installing the pRRU3901 based on the construction blueprint and

the clearance requirements.

NOTE

For details about the clearance requirements, see 7.1.3 Space Requirements.

Step 2 If the diameter of the pole ranges from 30 mm to 70 mm, use the delivered V clamp,

mounting bracket, and bolts to install the pRRU3901 on the pole. Lead the M6x80 bolts

through the mounting bracket, and torque the bolts to 5 N•m, as shown in Figure 7-14.

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Figure 7-14 Securing the pRRU3901 mounting bracket on the metal pole

If the diameter of the pole is greater than 70 mm, use the hose clamp to install the mounting

bracket on the pole. The hose clamp is prepared by customers. Torque the bolts to 5 N•m, as

shown in Figure 7-15.

Figure 7-15 Securing the pRRU3901 mounting bracket on the metal pole

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Step 3 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and

then press the pRRU3901 downwards until a click is heard. See Figure 7-16.

NOTE

It is good practice to perform the installation from the side view to promptly align the hooks with the

mounting holes.

Figure 7-16 Installing a pRRU3901 on a pole

----End

7.4.5 Installing a pRRU3901 on a Plate

This section describes how to install a pRRU3901 on a plate. If a suspended ceiling plate has

adequate load bearing capacity and installation space, the pRRU3901 can be installed on the

plate. However, it is good practice not to install a pRRU3901 on an aluminum plate.

Procedure

Step 1 Determine the position for installing the pRRU3901 based on the construction blueprint and

the clearance requirements.

NOTE

For details about the clearance requirements, see 7.1.3 Space Requirements.

Step 2 Place the mounting bracket in the installation position against the wall. Then, level the

mounting bracket and use a marker to mark two anchor points. See Figure 7-17.

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Figure 7-17 Anchor points on the pRRU3901 mounting bracket (unit: mm)

(1) Plate (2) Mounting bracket (3) Anchor point

CAUTION

To prevent inhalation or eye contact with dust, take adequate preventive measures when

drilling holes.

Step 3 Use a hammer drill with φ8 bore to drill holes at the anchor points.

Step 4 Lead the M6x80 bolts through the mounting bracket and the ceiling plate, and use a torque

screwdriver to torque the bolts to 5 N•m, as shown in Figure 7-18.

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Figure 7-18 Installing the pRRU3901 mounting bracket

Step 5 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and

then press the pRRU3901 downwards until a click is heard. See Figure 7-19.

NOTE

It is good practice to perform the installation from the side view to promptly align the hooks with the

mounting holes.

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Figure 7-19 Installing a pRRU3901 on a plate

----End

7.4.6 Installing a pRRU3901 on a Keel

This section describes how to install a pRRU3901 on a keel. If a suspended ceiling plate

cannot bear the pRRU3901, the pRRU3901 can be installed on the keel on the ceiling.

Context

Before installing the pRRU3901 on a keel, ensure that the keel is strong enough to bear the

pRRU3901.

lThe mounting bracket of the pRRU3901 can be installed on the keel of the following

specifications: GBT 11981-2008, JIS A6517-2002, and ASTM C635 C635M-2007. The

installation mode depends on onsite requirements because there are various keels.

lThis section describes the procedure of installing a pRRU3901 on the keel of JIS

standard used in Japan. The procedure of installing a pRRU3901 on other keels is the

same as that of installing a pRRU3901 on the keel of JIS standard.

Procedure

Step 1 Determine the position for installing the pRRU3901 based on the construction blueprint and

the clearance requirements.

NOTE

For details about the clearance requirements, see 7.1.3 Space Requirements.

Step 2 Place the V clamp across the keel, and use a marker to mark the projective positions of the

mounting holes on the suspended ceiling plate, as shown in Figure 7-20.

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Figure 7-20 Anchor points on the suspended ceiling plate (unit: mm)

CAUTION

To prevent inhalation or eye contact with dust, take adequate preventive measures when

drilling holes.

Step 3 Use a hammer drill to drill holes at the anchor points. You are advised to use the hammer drill

with Ф12 bore.

Step 4 Lead the M6x80 bolts through the mounting bracket and the suspended ceiling plate. Use a

torque screwdriver to torque the bolts to 5 N•m, as shown in Figure 7-21.

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Figure 7-21 Installing the pRRU3901 mounting bracket

Step 5 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and

then press the pRRU3901 downwards until a click is heard. See Figure 7-22.

NOTE

It is good practice to perform the installation from the side view to promptly align the hooks with the

mounting holes.

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Figure 7-22 Installing a pRRU3901 on a keel

----End

7.4.7 Installing the Cabinet

In the outdoor scenario, the pRRU3901 should be installed in the cabinet firstly.

Context

lWhen installed in the cabinet, the housing of pRRU3901 should be removed.

lAn RF surge protector provides surge protection for the RF ports on pRRU3902, and a

PoE surge protector provides surge protection for the CPRI ports.

lOne pRRU3901 with internal antenna need to be configured with one or two PoE surge

protectors.

lOne pRRU3901 with external antenna need to be configured with one PoE surge

protector, or two RF surge protectors when one RF daughter board is configured, or four

RF surge protectors when two RF daughter boards are configured.

Procedure

Step 1 Remove the housing on the top and at the bottom of pRRU3901, as shown in Figure 7-23.

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Figure 7-23 Removing the housing of pRRU3901

1. Use the M4 Phillips screwdriver to loosen the Phillips screw on the pRRU housing.

Wrench and remove the housing from the installation position of the Phillips screw hole,

as shown in Figure 7-24.

Figure 7-24 Removing the pRRU housing

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NOTE

– The pRRU housing and the RF daughter board can be secured using either Phillips screws or

protection screws, requiring the same installation operations. This section uses Phillips screws

as an example to describe the installation operations.

– Keep the Phillips screw secure for future use.

2. Use the M4 Phillips screwdriver to loosen the Phillips screws on the RF daughter board,

as shown in Figure 7-25.

Figure 7-25 Loosen the Phillips screws

3. Use the left hand to hold the RF daughter board and the right hand to hold the right

handle of the RF daughter board to remove the RF daughter board and put it into an ESD

box or bag, as shown in Figure 7-26.

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Figure 7-26 Removing the RF daughter board in slot1

4. Use an M3 Phillips screwdriver to loosen the two fastening screws of the light pipe, and

remove the light pipe, as shown in Figure 7-27.

Figure 7-27 Removing the light pipe

5. Use the M3 Phillips screwdriver to loosen the four fastening screws of the pDock mother

board, and remove the pDock mother board, as shown in Figure 7-28.

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Figure 7-28 Removing the pDock mother board

6. Install the RF daughter boards in slots S1, and use the M4 Phillips screwdriver to tighten

the two fastening screws always carried on each daughter board to 1.4 N•m, as shown in

Figure 7-29.

Figure 7-29 Installing the RF daughter boards

NOTICE

The installation positions of the RF daughter boards must be consistent before and after

the replacement.

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Step 2 Install the plate onto the cabinet, as shown in Figure 7-30.

Figure 7-30 Installing the plate onto the cabinet

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NOTICE

Make sure all the cables are installed before installing the plate. For details about installing

the cables of pRRU3901, see Figure 7-31.

Figure 7-31 Installing the pRRU3901 cables

(1) RF Jumper (2) CPRI_E0 port (3) Ethernet Cable

Step 3 Fit the four hooks on pRRU3901 into the hooks on the mounting bracket, and then push

pRRU3901 down against the mounting bracket until a click is heard, as shown in Figure

7-32.

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Figure 7-32 Installing a pRRU3901 into the cabinet

----End

7.5 Installing pRRU3901 Cables

This section describes the procedure of installing the pRRU3901 cables.

7.5.1 Requirements for Cable Layout

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

interference.

NOTE

If certain cables listed below are not required, skip the requirements for routing these cables.

General Requirements for Cable Layout

National Standards

lCode for Engineering Design of Generic Cabling System for Building and Campus (GB

50311-2007)

lCode for Engineering Acceptance of Generic Cabling System for Building and Campus

(GB50312-2007).

lSecurity Protection Engineering Technology Specifications (GB 50348-2004)

lCode for Construction and Acceptance of the Electronic Information System Room (GB

50462-2008)

lCode for Quality Acceptance of the Intelligent Building Engineering (GB 50339-2003)

lCode for Quality Acceptance of Electric Engineering Construction in Building (GB

50303-2002)

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lTechnical Specification for Construction and Acceptance of Telecommunication Conduit

Engineering (GB 50374-2006)

International Standards

lGeneric Cabling for Customer Premises (ISO/IEC 11801)

lCommercial Building Telecommunications Cabling Standard (EIA/TIA 568)

lCommercial Building Standard for Telecommunication Pathways and Spaces (EIA/TIA

569)

lAdministration Standard for Commercial Telecommunications Infrastructure (EIA/TIA

606)

lGrounding and Bonding Requirements for Telecommunications in Commercial

Buildings (EIA/TIA 607)

lGeneric Cabling Systems for Information Technology (EN 50173)

lCabling Installation for Information Technology (EN 50174)

Bending radius

lThe bending radius of a 1/4'' jumper, a 1/2'' softer jumper, and a 1/2'' common jumper

must be longer than 35 mm, 50 mm, and 127 mm, respectively.

lThe bending radius of a power cable is at least three times the diameter of the cable.

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

cable.

Cable binding

lCables of the same type are bound together.

lDifferent types of cables must be separately routed with a minimum spacing of 30 mm

and cannot be entangled.

lThe cables are bound tightly and neatly and the sheaths of the cables is intact.

lThe cable ties face the same direction and all cable ties bound at similar positions must

be in a straight line.

lThe extra length of each indoor cable tie must be cut off. A slack of 5 mm is reserved for

each outdoor cable tie before the extra length is cut off. All cut surfaces are without

sharp edges.

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

installed.

Safety

lThe steel pipe or fire-resistant rigid polyvinyl chloride pipe should be used for the cable

duct or for routing cables. The cross-sectional usage of the cable duct should be 30% to

50% and that of the pipe for routing cables should be 25% to 30%.

lCables are placed away from sharp objects or wall burrs. If these positions are inevitable,

protection pipes are required for the cables.

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

between cables and heat sources.

lA clearance is reserved at turns of a cable or the position close to a device, facilitating

cable and device maintenance. The recommended clearance is about 0.1 m.

Requirements for Special Cables

Ethernet Cable

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lA maximum of 100 Ethernet cables can be bundled if no PVC pipes are used. If pipes are

used, a maximum of 24 Ethernet cables can be led through a pipe. In this case, ensure

that 1/3 space inside the pipes must be vacant.

lThe point at which an Ethernet cable is bundled must be spaced 400 mm or less from the

Ethernet port on a pRRU.

lFor the pRRU3901 used in the elevator engine room on the rooftop, generator set for the

subway engine, and equipment room with central air conditioning, Ethernet cables must

be led through metallic conduits that are reliably grounded at both ends.

7.5.2 pRRU3901 Cable List

This section describes pRRU3901 cable connections.

Table 7-8 lists pRRU3901 cables.

Table 7-8 List of pRRU3901 cables

Cable One End The Other End

Connector Connected

to ...

Connector Connected to ...

Ethernet

Cable

RJ45 connector CPRI_E0~CP

RI_E7 port on

RHUB

RJ45 connector CPRI_E0~CPRI_

E1 port on

pRRU3901

RJ45 connector Transmission

port on Access

Control(AC)

RJ45 connector GE port on

pRRU3901

RJ45 connector CPRI_E0~CP

RI_E7 port on

RHUB

RJ45 connector Protect port on

PoE surge

protector 2

RJ45 connector Surge port on

PoE surge

protector 2

RJ45 connector Surge port on

PoE surge

protector 1

RJ45 connector Protect port on

PoE surge

protector 1

RJ45 connector CPRI_E0~CPRI_

E1 port on

pRRU3901

(Optional)

RF Jumper

SMA straight

male connector

External

antenna

TX/RX RF

port on

pRRU3901

Based on the

port model of

the antenna

system.

Antenna system

SMA straight

male connector

External

antenna

TX/RX RF

port on

pRRU3901

SMA straight

male connector

Protect port on

RF surge

protector

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Cable One End The Other End

Connector Connected

to ...

Connector Connected to ...

SMA straight

male connector

Surge port on

RF surge

protector

Based on the

port model of

the antenna

system.

Antenna system

NOTE

When the RHUB and the pRRU3901 connected using the Ethernet cable. If the Extender is used,

lIn the indoor scenario, the Ethernet cable is divided into two parts, one between the RHUB and the

Extender and the other between the Extender and the pRRU3901.

lIn the outdoor scenario, the Ethernet cable is divided into two parts, one among RHUB-PoE surge

protector 2- PoE surge protector 3-Extender and the other among the Extender- PoE surge

protector 4- PoE surge protector 1-pRRU3901.

7.5.3 Cable Connections (Indoor)

This section describes the cable connections for a single pRRU3901 and multiple pRRU3901s

in UMTS, LTE FDD, UMTS+LTE FDD, LTE FDD+LTE FDD mode.

Before installing the pRRU3901 cables, you must be aware of the following information:

lThe pRRU3901 can obtain power supply through the power over Ethernet (PoE).

lFor external antennas corresponding to RF daughter board 1, the TX port and RX port

are ANT0 and ANT1, respectively. For external antennas corresponding to RF daughter

board 2, the TX port and RX port are ANT2 and ANT3, respectively. For external

antennas corresponding to RF daughter board 3, the TX port and RX port are ANT4 and

ANT5, respectively.

lThe external antenna system is optional, and the pRRU3901 jumpers are not delivered.

By default, the pRRU3901s are configured with built-in antennas. If the external antenna

system is connected, the antenna system automatically switches to the external one. One

end of the pRRU3901 RF jumper is the SMA male connector, which is connected to the

external antenna TX/RX RF port on the pRRU3901. The other end of the pRRU3901 RF

jumper is the type N male connector, which is connected to the antenna system. For the

standard of the pRRU3901 RF jumper, see (Optional) RF Jumper of the DBS3900

LampSite Hardware Description.

Figure 7-33 shows the cable connection when the pRRU3901 is configured with only one RF

Daughter Board.

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Figure 7-33 pRRU3901 cable connection (1)

(1) Ethernet cable (2) RF jumper

NOTE

lThe Extender can be used to lengthen the distance between the RHUB and the pRRU3901 connected

using the Ethernet cable. If the Extender is used, the Ethernet cable is divided into two parts, one

between the RHUB and the Extender and the other between the Extender and the pRRU3901.

lWhen two Ethernet cables are used to transmit CPRI signals, connect one end of the cables to the

CPRI_E0 and CPRI_E1 ports on the pRRU panel and the other end to any two ports of CPRI_E0 to

CPRI_E7 on the RHUB panel. On the RHUB panel, CPRI_E0 and CPRI_E1, CPRI_E2 and

CPRI_E3, CPRI_E4 and CPRI_E5, and CPRI_E6 and CPRI_E7 are used in pairs. CPRI_E0 on the

pRRU panel connects to the even-numbered CPRI port (for example, CPRI_E0, CPRI_E2,

CPRI_E4, or CPRI_E6) on the RHUB panel, and CPRI_E1 on the pRRU panel connects to the odd-

numbered CPRI port (for example, CPRI_E1, CPRI_E3, CPRI_E5, or CPRI_E7). This document

describes signal transmission using one Ethernet cable as an example.

Figure 7-34 shows the cable connection when the pRRU3901 is configured with two RF

Daughter Boards.

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Figure 7-34 pRRU3901 cable connection (2)