Huawei Technologies QISRRU3952-850M RemoteRadio Unit User Manual

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Huawei Technologies QISRRU3952-850M RemoteRadio Unit User Manual | Manualzz

RRU3952(850M)

Hardware Description

Issue

Date

Draft A

2014-12-31

HUAWEI TECHNOLOGIES CO., LTD.

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

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

Website:

Email:

Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China http://www.huawei.com

[email protected]

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Hardware Description About This Document

About This Document

Purpose

This document provides reference for planning and deploying an RRU3952(850M) (referred to as RRU in this document). It presents the exterior and describes the ports, functions, cable types, connector specifications, and cable connections of the RRU.

Product Versions

The following table lists the product versions related to the RRU3952(850M).

Product Name

DBS3900

Solution Version l SRAN8.0 and later versions l GBSS15.0 and later versions l RAN15.0 and later versions l eRAN6.0 and later versions

Product Version

V100R008C00 and later versions

Intended Audience

This document is intended for: l Base station installation engineers l System engineers l Site maintenance engineers

Organization

1 Changes in RRU3952(850M) Hardware Description

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RRU3952(850M)

Hardware Description About This Document

This section describes the changes in RRU3952(850M) Hardware Description.

2 RRU Introduction

This chapter describes the exterior and function of the RRU as well as the ports and indicators on the RRU.

3 RRU Cables

This chapter describes RRU cables.

4 RF Cable Connections for the RRU3952(850M)

RF cable connections for the RRU vary depending on the configurations of the RRU and antenna.

5 RRU Auxiliary Devices

This chapter describes RRU auxiliary devices.

Conventions

Symbol Conventions

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

Symbol Description

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

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

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

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal injury.

Calls attention to important information, best practices and tips.

NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

General Conventions

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

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Convention

Times New Roman

Boldface

Italic

Courier New

Description

Normal paragraphs are in Times New Roman.

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

Book titles are in italics .

Examples of information displayed on the screen are in

Courier New.

Command Conventions

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

Convention

Boldface

Italic

[ ]

{ x | y | ... }

[ x | y | ... ]

{ x | y | ... }

[ x | y | ... ] *

*

Description

The keywords of a command line are in

Command arguments are in italics vertical bars. One item is selected.

.

boldface .

Items (keywords or arguments) in brackets [ ] are optional.

Optional items are grouped in braces and separated by

Optional items are grouped in brackets and separated by vertical bars. One item is selected or no item is selected.

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected.

GUI Conventions

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

Convention

Boldface

>

Description

Buttons, menus, parameters, tabs, window, and dialog titles are in boldface . For example, click OK .

Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder .

Keyboard Operations

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

Format

Key

Key 1 + Key 2

Key 1 , Key 2

Description

Press the key. For example, press Enter and press Tab .

Press the keys concurrently. For example, pressing Ctrl + Alt

+ A means the three keys should be pressed concurrently.

Press the keys in turn. For example, pressing Alt , A means the two keys should be pressed in turn.

Mouse Operations

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

Action

Click

Double-click

Drag

Description

Select and release the primary mouse button without moving the pointer.

Press the primary mouse button twice continuously and quickly without moving the pointer.

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

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RRU3952(850M)

Hardware Description Contents

Contents

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

1 Changes in RRU3952(850M) Hardware Description..............................................................1

2 RRU Introduction..........................................................................................................................2

2.1 RRU Exterior..................................................................................................................................................................3

2.2 RRU Functions...............................................................................................................................................................4

2.3 RRU Technical Specifications........................................................................................................................................5

2.4 RRU Ports.......................................................................................................................................................................5

2.5 RRU Indicators...............................................................................................................................................................7

2.6 Optical Modules.............................................................................................................................................................9

3 RRU Cables...................................................................................................................................11

3.1 RRU Cables..................................................................................................................................................................13

3.2 RRU PGND Cable........................................................................................................................................................14

3.3 RRU Power Cable........................................................................................................................................................15

3.4 RRU Alarm Cable........................................................................................................................................................16

3.5 CPRI Fiber Optic Cable................................................................................................................................................17

3.6 RRU RF Jumper...........................................................................................................................................................21

3.7 RRU AISG Multi-Wire Cable......................................................................................................................................21

3.8 RRU AISG Extension Cable........................................................................................................................................23

3.9 Inter-RRU RF Cable.....................................................................................................................................................24

4 RF Cable Connections for the RRU3952(850M).....................................................................25

5 RRU Auxiliary Devices..............................................................................................................27

5.1 IFS06............................................................................................................................................................................28

5.2 OCB..............................................................................................................................................................................29

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RRU3952(850M)

Hardware Description 1 Changes in RRU3952(850M) Hardware Description

1

Changes in RRU3952(850M) Hardware

Description

This section describes the changes in RRU3952(850M) Hardware Description.

Draft A (2014-12-31)

This is a draft.

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RRU3952(850M)

Hardware Description 2 RRU Introduction

2

RRU Introduction

About This Chapter

This chapter describes the exterior and function of the RRU as well as the ports and indicators on the RRU.

2.1 RRU Exterior

This section describes the exterior and dimensions of an RRU.

2.2 RRU Functions

This section describes main functions of an RRU.

2.3 RRU Technical Specifications

This section describes technical specifications of an RRU, including supported modes, frequency bands, RF specifications, engineering specifications, and antenna capabilities.

2.4 RRU Ports

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

2.5 RRU Indicators

This section describes six indicators on an RRU. They indicate the running status of the RRU.

2.6 Optical Modules

An optical module transmits optical signals between an optical port and an optical fiber.

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RRU3952(850M)

Hardware Description

2.1 RRU Exterior

This section describes the exterior and dimensions of an RRU.

Figure 2-1

shows the exterior of an RRU.

Figure 2-1 RRU exterior

2 RRU Introduction

Figure 2-2

shows RRU dimensions.

Figure 2-2 RRU dimensions

You can obtain the RRU frequency band and power supply information from the configuration label on the cover plate and obtain the RRU name from the nameplate on the side of RRU that

accommodates the conversion bracket. Figure 2-3 shows the positions of the configuration label

and nameplate on the RRU.

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Hardware Description

NOTE

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

Figure 2-3 Positions of the label and nameplate

2 RRU Introduction

(1) Configuration label

(4) Power supply module

(2) Nameplate

(5) Module name -

(3) Frequency band

2.2 RRU Functions

This section describes main functions of an RRU.

The Remote Radio Unit (RRU) consists of the high-speed interface unit, signal processing unit, power amplifier, duplexer, extension ports, and power module.

Figure 2-4

shows the functional structure of the RRU.

Figure 2-4 Functional structure of an RRU

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Hardware Description 2 RRU Introduction

NOTE

For details about the extension ports, see 2.4 RRU Ports .

The RRU performs the following functions: l Receives downlink baseband data from the BBU and sends uplink baseband data to the

BBU.

l Receives RF signals from the antenna system, down-converts the signals to intermediate frequency (IF) signals, amplifies the IF signals, performs analog-to-digital conversion, and up-converts RF signals to the transmit (TX) band.

l Multiplexes receive (RX) and TX signals on the RF channel so that these signals can share the same antenna channel, and filters the RX and TX signals.

l Provides a built-in Bias Tee (BT). Besides receiving and transmiting RF signals, RRU RF ports A and B transmit coupled RF signals and OOK signals to antennas through the builtin BT. The RF ports A, B, C, and D also supply DC power to the tower mounted amplifier

(TMA).

l The RRU can be powered by the AC/DC power module. In this case, this RRU is called

AC RRU. For details about the AC/DC power module, see AC/DC Power Module User

Guide or OPM15M User Guide .

2.3 RRU Technical Specifications

This section describes technical specifications of an RRU, including supported modes, frequency bands, RF specifications, engineering specifications, and antenna capabilities.

For details about technical specifications of an RRU, see section Technical Specifications of

RRUs in the 3900 Series Base Station Technical Description .

2.4 RRU Ports

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

Figure 2-5

shows the ports on the RRU panels.

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RRU3952(850M)

Hardware Description

Figure 2-5 Ports on the RRU1 panels

2 RRU Introduction

Table 2-1

describes ports and indicators on the RRU panels.

Table 2-1 Ports and indicators on the RRU panels

Item

(1) Bottom ports

Silkscreen

ANT_TX/RXA

Remarks

TX/RX port A, supporting RET signal transmission

ANT_TX/RXB TX/RX port B, supporting RET signal transmission

ANT_RXC

ANT_RXD

EXT_ALM

TX/RX port C

TX/RX port D

Alarm monitoring port used for monitoring one RS485 signal and two dry contact signals

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RRU3952(850M)

Hardware Description

Item Silkscreen

RET

RX_IN/OUT

(2) Ports in the cabling cavity

RTN(+)

NEG(-)

CPRI0

(3) Indicator

CPRI1

RUN

ALM

ACT

VSWR

CPRI0

CPRI1

2 RRU Introduction

Remarks

Communication port for the RET antenna, supporting RET signal transmission

Interconnection port

Power supply socket, for details about RRU power cable experience and specifications,

see 3.3 RRU Power Cable

.

Optical/electrical port 0, connected to the

BBU

Optical/electrical port 1, connected to the

BBU

For details, see 2.5 RRU Indicators .

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

l Connect the CPRI0 port to the BBU by default in the single-mode scenario.

2.5 RRU Indicators

This section describes six indicators on an RRU. They indicate the running status of the RRU.

For detailed positions of RRU indicators, see 2.4 RRU Ports .

Table 2-2

describes RRU indicators.

Table 2-2 RRU Indicators

Indicator Color

RUN Green

Status

Steady on

Steady off

Meaning

The power input is available, but the board is faulty.

No power input is available or the board is faulty.

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Hardware Description 2 RRU Introduction

Indicator

ALM

ACT

VSWR

CPRI0

CPRI1

Color

Red

Green

Red

Red and green

Red and green

Status

Blinking (on for

1s and off for 1s)

Meaning

The board is running properly.

Blinking (on for

0.125s and off for

0.125s)

Steady on

The board software is being loaded or the board is not working.

Alarms are generated, and the module must be replaced.

Blinking (on for

1s and off for 1s)

Steady off

Steady on

Blinking (on for

1s and off for 1s)

Steady off

Alarms are generated. The alarms may be caused by faults on the related board or ports.

Therefore, you need to locate the fault before deciding whether to replace the module.

No alarms are generated.

The board is working properly when TX channels are enabled or software is being loaded to a board that is not started.

The board is running with TX channels disabled.

No voltage standing wave ratio (VSWR) alarm is generated.

Blinking (on for

1s and off for 1s)

Steady on

Blinking (on for

0.125s and off for

0.125s)

VSWR alarms are generated on the

ANT_TX/RXA and ANT_TX/RXB ports.

Steady green

Steady red

VSWR alarms are generated on the

ANT_TX/RXB port.

VSWR alarms are generated on the

ANT_TX/RXA port.

Blinking red (on for 1s and off for

1s)

The CPRI link is running properly.

An optical module fails to receive or transmit signals possibly because the optical module is faulty or the optical fiber is broken.

The CPRI link is out of lock because of faults on the mutual lock of dual-mode clock sources or mismatched data rates on CPRI ports.

Steady off

Steady green

The optical module cannot be detected or is powered off.

The CPRI link is running properly.

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Hardware Description 2 RRU Introduction

Indicator Color Status

Steady red

Blinking red (on for 1s and off for

1s)

Steady off

Meaning

An optical module fails to receive or transmit signals possibly because the optical module is faulty or the optical fiber is broken.

The CPRI link is out of lock because of faults on the mutual lock of dual-mode clock sources or mismatched data rates on CPRI ports.

The optical module cannot be detected or is powered off.

2.6 Optical Modules

An optical module transmits optical signals between an optical port and an optical fiber.

NOTE

The exterior and labels for an optical module in this document are for reference only.

Exterior

The following figure shows the exterior of an optical module.

Figure 2-6 Exterior of an optical module

Optical Module Label

A label is available on each optical module, which provides information such as rate , wavelength , and transmission mode , as shown in the following figure.

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RRU3952(850M)

Hardware Description

Figure 2-7 Optical module label

2 RRU Introduction

(1) Rate (2) Wavelength (3) Transmission mode

Optical Module Type

Optical modules can be classified into single-mode and multimode optical modules, which can be distinguished as follows: l The extraction lever of a single-mode optical module is blue and that of a multimode optical module is black or gray.

l The transmission mode is displayed as "SM" on the label of a single-mode optical module and "MM" on the label of a multimode optical module.

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RRU3952(850M)

Hardware Description 3 RRU Cables

3

RRU Cables

About This Chapter

This chapter describes RRU cables.

3.1 RRU Cables

This section describes RRU cable connections.

3.2 RRU PGND Cable

An RRU PGND cable connects an RRU and a ground bar, ensuring the proper grounding of the

RRU. The maximum length of an RRU PGND cable is 8 m (26.25 ft).

3.3 RRU Power Cable

The RRU power cable is a -48 V DC shielded cable. It feeds -48 V DC power to an RRU. The length of power supply that an RRU power cable supports is 100 m (328.08 ft) by default.

3.4 RRU Alarm Cable

The RRU alarm cable, a shielded straight-through cable, transmits alarm signals from an external device to an RRU so that the base station monitors the operating status of external devices. The

RRU alarm cable is 5 m (16.4 ft).

3.5 CPRI Fiber Optic Cable

CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals.

3.6 RRU RF Jumper

The 1/2" RRU RF jumper transmits and receives RF signals between an RRU and an antenna.

A fixed-length RF jumper used by an RRU is 2 m (6.56 ft), 3 m (9.84 ft), 4 m (13.12 ft), 6 m

(19.68 ft), or 10 m (32.81 ft). A variable-length RF jumper used by an RRU has a maximum length of 10 m (32.81 ft).

3.7 RRU AISG Multi-Wire Cable

An RRU AISG multi-wire cable connects an RRU and an RCU to transmit control signals from a base station to an RET antenna. When the RRU is connected to the RET antenna, an AISG multi-wire cable transmits RS485 signals. The length of the AISG multi-wire cable is 5 m (16.40

ft).

3.8 RRU AISG Extension Cable

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Hardware Description 3 RRU Cables

When the distance between an RRU and an RCU is longer than 5 m (16.4 ft), an AISG multiwire cable is not long enough to connect the RRU and the RCU. In this case, an AISG extension cable is used to extend the AISG multi-wire cable for transmitting RS485 signals. The length of the AISG extension cable is 15 m (49.21 ft).

3.9 Inter-RRU RF Cable

An inter-RRU RF cable connects the RX_IN/OUT ports on two RRUs in the same cell and transmits RF signals between the RRUs. The length of the inter-RRU RF cable is 2 m (6.56 ft).

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Hardware Description 3 RRU Cables

3.1 RRU Cables

This section describes RRU cable connections.

Table 3-1

lists RRU cables.

Table 3-1 RRU cables

Cable One End

Connector

3.2 RRU PGND

Cable

OT terminal

(M6, 16 mm 2 or

0.025 in.

2 )

Installation

Position

Ground terminal on the RRU

3.3 RRU Power

Cable

3.4 RRU Alarm

Cable

Tool-less female connector

(pressfit type)

DB15 male connector

NEG(-) and

RTN(+) ports on the RRU

EXT_ALM port on the

RRU

DLC connector CPRI0 port on the RRU

CPRI1 port on the RRU

3.5 CPRI Fiber

Optic Cable

(RRU working in multimode scenarios)

3.5 CPRI Fiber

Optic Cable

(RRU working in single-mode scenarios)

3.6 RRU RF

Jumper

3.7 RRU AISG

Multi-Wire

Cable

DLC connector

DIN male connector

DB9 waterproof male connector

CPRI0 port on the RRU

RF ports on the RRU

RET port on the RRU

The Other End

Connector Installation

Position

OT terminal

(M8, 16 mm 2 or

0.025 in.

2 )

Ground terminal on the ground bar

External power equipment

Depending on the power supply equipment

Cord end terminal

External alarm device

DLC connector CPRI port on a board in the

BBU

DLC connector CPRI port on a board in the

BBU

DIN male connector

Standard AISG female connector

Antenna system

Standard AISG male connector on the RCU or on the AISG extension cable

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Hardware Description 3 RRU Cables

Cable

3.8 RRU AISG

Extension Cable

3.9 Inter-RRU

RF Cable

One End

Connector

Standard AISG male connector

DB2W2 connector

Installation

Position

Standard

AISG female connector on the AISG multi-wire cable

RX_IN/OUT port on the

RRU

The Other End

Connector Installation

Position

Standard AISG female connector

Standard AISG male connector on the RCU

DB2W2 connector

RX_IN/OUT port on the RRU

3.2 RRU PGND Cable

An RRU PGND cable connects an RRU and a ground bar, ensuring the proper grounding of the

RRU. The maximum length of an RRU PGND cable is 8 m (26.25 ft).

Exterior

A PGND cable is green or green and yellow with a cross-sectional area of 16 mm 2 (0.025 in.

2 ).

An OT terminal is installed at each end of the cable. Figure 3-1 shows a PGND cable.

Figure 3-1 PGND cable

(1) OT terminal (M6, 16 mm 2 or 0.025 in.

2 ) (2) OT terminal (M8, 16 mm 2 or 0.025 in.

2 )

NOTE l If the customer prepares the PGND cable, a copper-core cable with a cross-sectional area of 16 mm 2

(0.025 in.

2 ) or larger is recommended.

l One OT terminal must be added to each end of the PGND cable onsite.

l You can determine the color of the cable and whether to use corresponding two-hole OT terminals based on local regulations.

Figure 3-2

shows a two-hole OT terminal.

Figure 3-2 Two-hole OT terminal

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Hardware Description 3 RRU Cables

3.3 RRU Power Cable

The RRU power cable is a -48 V DC shielded cable. It feeds -48 V DC power to an RRU. The length of power supply that an RRU power cable supports is 100 m (328.08 ft) by default.

NOTE l The maximum length of power supply that an RRU power cable supports is 150 m (492.12 ft). Contact

Huawei engineers when an RRU power cable greater than 50 m (164.04 ft) is required.

l If a power device provided by the customer is used, the recommended specification of the circuit breaker on this power device is 15 A to 30 A.

Exterior

There are two types of RRU power cables in terms of cross-sectional areas: 5.3 mm 2 (0.008 in.

2 ) (10 AWG) complying with North American standards and 6 mm 2 (0.009 in.

2 ) complying with

European standards.

A tool-less female connector (pressfit type) needs to be added to one end of the RRU power cable and a corresponding terminal needs to be added to the other end based on the requirements

of the connector on the external power device, as shown in Figure 3-3 .

Figure 3-3 RRU power cable

(1) -48 V DC power cable (2) Shield layer (3) Tool-less female connector

(pressfit type)

Table 3-2

lists the specifications of an RRU power cable.

Table 3-2 Specifications of an RRU power cable

Cable

RRU power cable

Wire Wire Color in Most

Regions

North

American

Standard

Europea n

Standar d

RTN(+) Black

NEG(-) Blue

Brown

Blue

Wire Color in Other Regions

UK

Blue

Gray

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Hardware Description 3 RRU Cables

3.4 RRU Alarm Cable

The RRU alarm cable, a shielded straight-through cable, transmits alarm signals from an external device to an RRU so that the base station monitors the operating status of external devices. The

RRU alarm cable is 5 m (16.4 ft).

Exterior

An alarm cable has a DB15 waterproof male connector at one end and eight cord end terminals

at the other end, as shown in Figure 3-4 .

Figure 3-4 Alarm cable

(1) DB15 waterproof male connector (2) Cord end terminal

Pin Assignment

Table 3-3

describes the pin assignment for the wires of an RRU alarm cable.

Table 3-3 Pin assignment for the wires of an RRU alarm cable

RRU

Alarm

Port

Dry contact

Pin of the

Waterpro ofed

DB15

Male

Connecto r

X1.2

Color

White and blue

Type

Twisted pair

Cord End

Terminal

X2

X1.3

Blue X3

Description

SWITCH_INPUT0+

X1.6

White and orange

Twisted pair

X4

SWITCH_INPUT0-

(GND)

SWITCH_INPUT1+

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Hardware Description 3 RRU Cables

RRU

Alarm

Port

Pin of the

Waterpro ofed

DB15

Male

Connecto r

X1.7

Color

Orange

Type Cord End

Terminal

Description

X5 SWITCH_INPUT1-

(GND)

APM RXRS485 X1.10

X1.11

X1.13

X1.14

White and green

Green

White and brown

Brown

Twisted pair

Twisted pair

X6

X7

X8

X9

APM RX+

APM TX-

APM TX+

3.5 CPRI Fiber Optic Cable

CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals.

Multimode fiber optic cables connect the BBU and RRU or interconnect two RRUs. The maximum length of the multimode fiber optic cable between the BBU and RRU is 150 m (492.12

ft) and the multimode fiber optic cable between two RRUs has a fixed length of 10 m (32.81 ft).

A single-mode fiber optic cable consists of the single-mode pigtail and trunk single-mode fiber optic cable, and the single-mode pigtail and trunk single-mode fiber optic cable are interconnected using the ODF. The maximum length of the single-mode pigtail is 20 m (65.62

ft) on BBU side and 70 m (229.66 ft) on RRU side.

NOTE l The ODF and trunk single-mode fiber optic cable are provided by the customer and must comply with the ITU-T G.652 standard.

l The ODF is an outdoor transfer box for fiber optic cables, which interconnects the single-mode pigtail and trunk single-mode fiber optic cable.

l A multimode fiber optic cable and a single-mode fiber optic cable are connected to a multimode optical module and a single-mode optical module, respectively.

Exterior

Multimode fiber optic cable: The multimode fiber optic cable has a DLC connector at each end, as shown in

Figure 3-5

.

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RRU3952(850M)

Hardware Description

Figure 3-5 Multimode fiber optic cable

3 RRU Cables

(1) DLC connector (2) Breakout cable (3) Label on the breakout cable

NOTE l When a multimode fiber optic cable connects a BBU and an RRU, the breakout cable on the BBU side is 0.34 m (1.12 ft) and the breakout cable on the RRU side is 0.03 m (0.098 ft).

l When a multimode fiber optic cable connects two RRUs, the breakout cable on both sides is 0.03 m

(0.098 ft).

Figure 3-6

shows the connection of the multimode fiber optic cable between a BBU and an

RRU.

Figure 3-6 Connection of the multimode fiber optic cable between a BBU and an RRU

(1) Multimode fiber optic cable between a BBU and an RRU

Single-mode pigtail: The single-mode pigtail has a DLC connector at one end and an FC, LC, or SC connector at the other end, as shown in

Figure 3-7

.

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RRU3952(850M)

Hardware Description

Figure 3-7 Single-mode pigtail

3 RRU Cables

(1) DLC connector (2) Breakout cable

(3) Label on the breakout cable

(4) FC connector (5) LC connector (6) SC connector

NOTE l When a single-mode pigtail connects a BBU and an ODF, the breakout cables on the BBU side and

ODF side are 0.34 m (1.12 ft) and 0.8 m (2.62 ft), respectively.

l When a single-mode pigtail connects an RRU and an ODF, the breakout cables on the RRU side and

ODF side are 0.03 m (0.098 ft) and 0.8 m (2.62 ft), respectively.

Figure 3-8

shows the connection of the single-mode pigtail.

Figure 3-8 Connection of the single-mode pigtail

(1) Single-mode pigtail between a BBU and an ODF (2) Single-mode pigtail between an RRU and an ODF

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RRU3952(850M)

Hardware Description

Selection Principles

The following table describes the principles for selecting CPRI fiber optic cables.

3 RRU Cables

Table 3-4 Principles for selecting CPRI fiber optic cables

Remote

Distance

Less than or equal to 100 m

(328.08 ft)

Selection Principle

Multimode fiber optic cable

Remarks

Connects the BBU and RRU

When it connects two RRUs, the distance between the two RRUs must be equal to or less than 10 m (32.81 ft).

Greater than

100 m (328.08

ft) and equal to or less than

150 m (492.12

ft)

Multimode fiber optic cable

Recommended: single-mode fiber optic cable (single-mode pigtail and trunk single-mode fiber optic cable)

Connects the BBU and RRU

The single-mode pigtail at the RRU or BBU side is connected to the trunk single-mode fiber optic cable using the ODF.

Greater than

150 m (492.12

ft)

Single-mode fiber optic cable

(single-mode pigtail and trunk single-mode fiber optic cable)

Pin Assignment

Table 3-5

describes the labels on and recommended connections for the breakout cables of a

CPRI fiber optic cable.

Table 3-5 Labels on and recommended connections for the breakout cables of a CPRI fiber optic cable

Label

1A

Installation Position

Multimode Fiber

Optic Cable

Between a BBU and an RRU

Multimode Fiber

Optic Cable

Between Two

RRUs

CPRI RX port on the

RRU

CPRI RX port on

RRU 1

Single-Mode Pigtail

RX port on the BBU or

CPRI RX port on the

RRU

1B

2A

CPRI TX port on the

RRU

TX port on the BBU

CPRI TX port on

RRU 1

CPRI TX port on

RRU 0

TX port on the BBU or

CPRI TX port on the

RRU

ODF

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RRU3952(850M)

Hardware Description 3 RRU Cables

Label

2B

Installation Position

Multimode Fiber

Optic Cable

Between a BBU and an RRU

Multimode Fiber

Optic Cable

Between Two

RRUs

RX port on the BBU CPRI RX port on

RRU 0

Single-Mode Pigtail

ODF

3.6 RRU RF Jumper

The 1/2" RRU RF jumper transmits and receives RF signals between an RRU and an antenna.

A fixed-length RF jumper used by an RRU is 2 m (6.56 ft), 3 m (9.84 ft), 4 m (13.12 ft), 6 m

(19.68 ft), or 10 m (32.81 ft). A variable-length RF jumper used by an RRU has a maximum length of 10 m (32.81 ft).

NOTE l When the distance between an RRU and an antenna is less than 10 m (32.81 ft), one end of the RF jumper is connected to the ANT-TX/RXA or ANT-TX/RXB port at the bottom of the RRU, and the other end is connected to the antenna.

l When the distance between an RRU and an antenna is greater than 10 m (32.81 ft), one end of the RF jumper is connected to a feeder, and the other end is connected to the antenna.

l If the customer prepares the RF jumper, the length of the RF jumper should be as short as possible and not exceed 2 m (6.56 ft.).

Exterior

An RF jumper has a DIN male connector at one end and a customized connector at the other end.

Figure 3-9

shows an RF jumper with a DIN male connector at each end.

Figure 3-9 RF jumper

(1) DIN male connector

3.7 RRU AISG Multi-Wire Cable

An RRU AISG multi-wire cable connects an RRU and an RCU to transmit control signals from a base station to an RET antenna. When the RRU is connected to the RET antenna, an AISG

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RRU3952(850M)

Hardware Description 3 RRU Cables multi-wire cable transmits RS485 signals. The length of the AISG multi-wire cable is 5 m (16.40

ft).

NOTE

An RCU is a driving motor used for the phase shifter in the RET antenna. It receives control commands from a base station and runs the commands to drive the stepper motor. Using a gear, the stepper motor drives the adjustable phase shifter in the antenna and changes the downtilt angle.

Exterior

An AISG multi-wire cable has a waterproofed DB9 male connector at one end and a standard

AISG female connector at the other end, as shown in

Figure 3-10

.

Figure 3-10 AISG multi-wire cable

(1) Waterproofed DB9 male connector (2) Standard AISG female connector

Pin Assignment

Table 3-6

describes the pin assignment for the wires of an AISG multi-wire cable.

Table 3-6 Pin assignment for the wires of an AISG multi-wire cable

X1 End (Pin of the

Waterproofed

DB9 Male

Connector)

X2 End (Pin of the

Standard AISG

Female Connector)

Color Type

X1.1

X2.1

White and blue Twisted pair

X1.3

X2.3

Blue

White and orange Twisted pair

X1.5

X1.4

X2.5

X2.4

Orange

White and green

-

X1.9 and X1.4 are interconnected.

-

Description

+12 V

RS485 B

RS485 A

GND

GND

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RRU3952(850M)

Hardware Description 3 RRU Cables

-

-

X1 End (Pin of the

Waterproofed

DB9 Male

Connector)

X2 End (Pin of the

Standard AISG

Female Connector)

X2.1 and X2.6 are interconnected.

X2.4 and X2.7 are interconnected.

-

-

Color

-

-

Type Description

+12 V

GND

3.8 RRU AISG Extension Cable

When the distance between an RRU and an RCU is longer than 5 m (16.4 ft), an AISG multiwire cable is not long enough to connect the RRU and the RCU. In this case, an AISG extension cable is used to extend the AISG multi-wire cable for transmitting RS485 signals. The length of the AISG extension cable is 15 m (49.21 ft).

Exterior

An AISG multi-wire cable has a standard AISG male connector at one end and a standard AISG

female connector at the other end, as shown in Figure 3-11 .

Figure 3-11 AISG extension cable

(1) Standard AISG male connector (2) Standard AISG female connector

Pin Assignment

Table 3-7

describes the pin assignment for the wires of an AISG extension cable.

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RRU3952(850M)

Hardware Description

Table 3-7 Pin assignment for the wires of an AISG extension cable

X1 End (Pin of the

Standard

AISG Male

Connector)

X2 End (Pin of the

Standard

AISG

Female

Connector)

Color Type

X1.1

X2.1

White and blue Twisted pair

Blue

X1.7

X2.7

White and orange Twisted pair

Orange

White and green Twisted pair X1.3

X1.5

X1.6

X2.3

X2.5

X2.6

Green

White and brown Twisted pair

Brown

3 RRU Cables

Description

+12 V

DC Return

RS485 B

RS485 A

+24 V

3.9 Inter-RRU RF Cable

An inter-RRU RF cable connects the RX_IN/OUT ports on two RRUs in the same cell and transmits RF signals between the RRUs. The length of the inter-RRU RF cable is 2 m (6.56 ft).

Exterior

Figure 3-12

shows an inter-RRU RF cable with a DB2W2 connector at each end.

Figure 3-12 Inter-RRU RF cable

(1) DB2W2 connector

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RRU3952(850M)

Hardware Description 4 RF Cable Connections for the RRU3952(850M)

4

RF Cable Connections for the RRU3952

(850M)

RF cable connections for the RRU vary depending on the configurations of the RRU and antenna.

Description of RF Cable Connections

This section describes the RF cable connections for the RRU serving a single sector. The following table lists the RF cable connections for the RRU.

Table 4-1 RF cable connections for the RRU

RRU Model Specifications of a

Single RRU

Scenario

RRU3952(850M) For details, see section

"Typical Power

Configuration for RRU

Modules" in chapter

"Configuration

Reference" in 3900

Series Base Station

Initial Configuration

Guide .

2T2R

1T2R+1T2R

2T4R

Illustration of

Cable

Connections

See illustration 1 in

Figure 4-1 .

See illustration 2 in

Figure 4-1 .

See illustration 3 in

Figure 4-1 .

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RRU3952(850M)

Hardware Description

Illustration of Cable Connections

Figure 4-1 RF cable connections for the RRU

4 RF Cable Connections for the RRU3952(850M)

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RRU3952(850M)

Hardware Description 5 RRU Auxiliary Devices

5

RRU Auxiliary Devices

About This Chapter

This chapter describes RRU auxiliary devices.

5.1 IFS06

An Indoor Floor installation Support (IFS06) is used for installing indoor RRUs.

5.2 OCB

An Outdoor Cable Conversion Box (OCB) interconnects cables of different core diameters.

Power cables shipped with RRUs cannot support long-distance power supply. Therefore, when power supply is far from the equipment, cables with large core diameters are used, and an OCB connects these cables and RRU power cables.

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RRU3952(850M)

Hardware Description 5 RRU Auxiliary Devices

5.1 IFS06

An Indoor Floor installation Support (IFS06) is used for installing indoor RRUs.

Exterior

Figure 5-1

shows an IFS06.

Figure 5-1 IFS06

(1) Cable tray

(5) Adjustable beam

(2) Ground bar 2

(6) Ground bar 1

(3) Rear foot

(7) Main frame -

(4) Front foot

Function

l It can be installed on the ground.

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

l RRUs can be installed on an IFS06 only when the ambient temperature is higher than or equal to the lowest working temperature of the RRU and at least 5°C (41°F) lower than the highest working temperature of the RRU. In this scenario, the IFS06 supports at least three

RRUs. When the ambient temperature is higher than or equal to the lowest working

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RRU3952(850M)

Hardware Description 5 RRU Auxiliary Devices temperature of the RRU and at least 10°C (50°F) lower than the highest working temperature of the RRU, the IFS06 supports a maximum of six RRUs.

NOTE

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

RRUs" in 3900 Series Base Station Technical Description .

Specifications

Table 5-1

describes IFS06 specifications.

Table 5-1 IFS06 specifications

Item

Dimensions (H x W x D)

Specification

1730 mm (79 in.) x 600 mm (23.62 in.) x 600 mm (23.62 in.)

Weight 45 kg (99.23 lb)

5.2 OCB

An Outdoor Cable Conversion Box (OCB) interconnects cables of different core diameters.

Power cables shipped with RRUs cannot support long-distance power supply. Therefore, when power supply is far from the equipment, cables with large core diameters are used, and an OCB connects these cables and RRU power cables.

Application Scenario of an OCB

Figure 5-2

shows the application scenario of an OCB.

Figure 5-2 Application scenario of an OCB

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RRU3952(850M)

Hardware Description 5 RRU Auxiliary Devices

For details about the structure, functions, installation, and maintenance of an OCB, see the OCB

User Guide or OCB–01M User Guide .

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