Huawei Technologies RRU3606-AWS Remote Radio Unit User Manual

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User Manual

Huawei Proprietary and Confidential

1 RRU3606 User Guide

About This Chapter

Purpose

This describes hardware configuration, software installation, and routine maintenance of the

RRU3606.

Related Versions

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

Product Name Related Versions

RRU3606 V400R006

Intended Audience

This document is intended for:

lField engineers

lSystem engineers

Change History

Version Record

01 (2008-02-25) Initial release.

Organization

1.1 Safety Information

1.2 Hardware Configuration of the RRU3606

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This describes the configuration of equipment and cables of the RRU3606.

1.3 Installing Hardware for the RRU3606

This describes the hardware installation, cable distribution, and installation checklist for the

RRU3606.

1.4 Maintaining the RRU3606

This describes how to maintain the RRU3606.

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1.1 Safety Information

1.1.1 Safety Precautions

This section describes certain safety precautions and helps to choose the measurement device

and testing device. Read and follow these safety precautions before installing, operating, and

maintaining Huawei devices.

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully to

minimize the possibility of accidents.

The Danger, Caution, and Note items in the package of documents do not cover all the safety

precautions that must be followed. They only provide the generic safety precautions for

operations.

Symbols

DANGER

This symbol indicates that casualty or serious accident may occur if you ignore the safety

instruction.

CAUTION

This symbol indicates that serious or major injury may occur if you ignore the safety instruction.

NOTE

This symbol indicates that the operation may be easier if you pay attention to the safety instruction.

Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautions

provided in the documents are supplementary. You must comply with the local safety

regulations.

General Installation Requirements

The personnel in charge of installation and maintenance must be trained and master the correct

operating methods and safety precautions before beginning work.

The rules for installing and maintaining the device are as follows:

lOnly the trained and qualified personnel can install, operate and maintain the device.

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lOnly the qualified specialists are allowed to remove the safety facilities, and repair the

device.

lAny replacement of the device or part of the device (including the software) or any change

made to the device must be performed by qualified or authorized personnel of Huawei.

lAny fault or error that might cause safety problems must be reported immediately to the

personnel in charge.

Grounding Requirements

The following requirements are applicable to the device to be grounded:

lGround the device before installation and remove the ground cable after uninstallation.

lDo not operate the device in the absence of a ground conductor. Do not damage the ground

conductor.

lThe unit (or system) must be permanently connected to the protection ground before

operation. Check the electrical connection of the device before operation and ensure that

the device is reliably grounded.

Safety of Personnel

Ensure the following:

lWhen lightning strikes, do not operate the device and cables.

lWhen lightning strikes, unplug the AC power connector. Do not use the fixed terminal or

touch the terminal or antenna connector.

NOTE

The previous two requirements are suitable for the wireless fixed terminal.

lTo prevent electric shock, do not connect safety extra-low voltage (SELV) circuits to

telecommunication network voltage (TNV) circuits.

lTo prevent laser radiation from injuring your eyes, never look into the optical fiber outlet

with unaided eyes.

lTo prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, gloves

and wrist strap, and remove conductors such as jewelry and watch before operation.

Device Safety

lBefore operation, the device must be secured on the floor or other fixed objects, such as

the walls and the mounting racks.

lDo not block ventilation openings while the system is running.

lWhen installing the panel, tighten the screw with the tool.

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1.1.2 Electricity Safety

High Voltage

DANGER

lThe high voltage power supply provides power for running the system. Direct contact with

the high voltage power supply or contact through damp objects may result in fatal danger.

lNon-standard and improper high voltage operations may result in fire and electric shock.

lThe personnel who install the AC facility must be qualified to perform operations on high

voltage and AC power supply facilities.

lWhen installing the AC power supply facility, follow the local safety regulations.

lWhen operating the AC power supply facility, follow the local safety regulations.

lWhen operating the high voltage and AC power supply facilities, use the specific tools

instead of common tools.

lWhen the operation is performed in a damp environment, ensure that water is kept off the

device. If the cabinet is damp or wet, shut down the power supply immediately.

Thunderstorm

The following requirements are suitable only for the wireless base station or the device with an

antenna or GPS antenna.

DANGER

In a thunderstorm, do not perform operations on high voltage and AC power supply facilities or

on a steel tower and mast.

High Electrical Leakage

CAUTION

Ground the device before powering on the device. Otherwise, the personnel and device are in

danger.

If the "high electrical leakage" flag is stuck to the power terminal of the device, you must ground

the device before powering it on.

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Power Cable

CAUTION

Do not install and remove the power cable with a live line. Transient contact between the core

of the power cable and the conductor may generate electric arc or spark, which may cause fire

or eye injury.

lBefore installing or removing the power cable, turn off the power switch.

lBefore connecting the power cable, ensure that the power cable and label comply with the

requirements of the actual installation.

Fuse

CAUTION

To ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same type

and specifications.

Electrostatic Discharge

CAUTION

The static electricity generated by the human body may damage the electrostatic sensitive

components on the circuit board, such as the large-scale integrated circuit (LIC).

In the following situations, the human body generates a static electromagnetic field:

lMovement of body parts

lClothes friction

lFriction between shoes and the ground

lHolding plastic in hand

The static electromagnetic field will remain within the human body for a long time.

Before contacting the device, plug boards, circuit boards, and application specific integrated

circuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components from

being damaged by the static electricity in the human body.

Figure 1-1shows how to wear an ESD wrist strap.

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Figure 1-1 Wearing an ESD wrist strap

1.1.3 Inflammable Environment

DANGER

Do not place the device in the environment that has inflammable and explosive air or fog. Do

not perform any operation in this environment.

Any operation of the electrical device in the inflammable environment causes danger.

1.1.4 Battery

Storage Battery

DANGER

Before handling the storage battery, read the safety precautions for the handling and connection

of the storage battery.

Incorrect operation of storage batteries may cause danger. During operation, ensure the

following:

lPrevent any short-circuit.

lPrevent the electrolyte from overflowing and leakage.

Electrolyte overflow may damage the device. It will corrode the metal parts and the circuit

boards, and ultimately damage the device and cause short-circuit of the circuit boards.

General Operations

Before installing and maintaining the storage battery, ensure the following:

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lUse special insulation tools.

lUse eye protection devices and operate with care.

lWear rubber gloves and an apron in case of an electrolyte overflow.

lAlways keep the battery upright when moving. Do not place the battery upside down or tilt

it.

Short-Circuit

DANGER

Short-circuit of the battery may cause injury. Although the voltage of a battery is low, high

transient current generated by short-circuit will release a surge of power.

Keep metal objects away from the battery to prevent short circuit. If they have to be used,

disconnect the battery in use before performing any other operation.

Harmful Gas

CAUTION

lDo not use unsealed lead-acid storage batteries, because the gas emitted from it may result

in fire or device corrosion.

lLay the storage battery horizontally and fix it properly.

The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place with

good ventilation and take precautions against fire.

High Temperature

CAUTION

High temperature may result in distortion, damage, and electrolyte overflow of the battery.

When the temperature of the battery exceeds 60oC, check whether there is acid overflow. If acid

overflow occurs, handle the acid immediately.

Acid

CAUTION

If the acid overflows, it should be absorbed and neutralized immediately.

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When handling a leaky battery, protect against the possible damage caused by the acid. Use the

following materials to absorb and neutralize acid spills:

lSodium bicarbonate (baking soda): NaHCO3

lSodium carbonate (soda): Na2CO3

Antacids must be used according to the instructions provided by the battery manufacturer.

Lithium Battery

CAUTION

There is danger of explosion if the battery is incorrectly replaced.

lReplace the lithium battery with the same or equivalent type recommended by the

manufacturer.

lDispose of the used battery according to the instructions provided by the manufacturer.

lDo not dispose of the lithium battery in fire.

1.1.5 Radiation

Electromagnetic Field Exposure

CAUTION

High power radio-frequency signals are harmful to human body.

Before installing or maintaining an antenna on a steel tower or mast with a large number of

transmitter antennas, the operator should coordinate with all parties to ensure that the transmitter

antennas are shut down.

The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for the

installation and operation of BTSs are given in the following section. Operators are also required

to comply with the related local regulations on erecting BTSs.

lThe antenna should be located in an area that is inaccessible to the public where the RF

radiation exceeds the stipulated value.

lIf the areas where RF radiation exceeds the stipulated value are accessible to workers,

ensure that workers know where these areas are. They can shut down the transmitters before

entering these areas. Such areas may not exist; but if they exist, the areas must be within a

range of less than 10 m around the antennas.

lEach forbidden zone should be indicated by a physical barrier and striking sign to warn the

public or workers.

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Laser

CAUTION

When handling optical fibers, do not stand close to, or look into the optical fiber outlet with

unaided eyes.

Laser transceivers or transmitters are used in the optical transmission system and associated test

tools. Because the laser that is transmitted through the optical fiber produces a small beam of

light, it has a very high power density and is invisible to human eyes. If a beam of light enters

the eye, the retina may be damaged.

Normally, staring into the end of an unterminated optical fiber or broken optical fiber with the

unaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyes

may, however, be damaged if an optical tool such as a microscope, magnifying glass or eye

loupe is used to stare into the bare optical fiber end.

Read the following guidelines to prevent laser radiation:

lOnly the trained and authorized personnel can perform the operation.

lWear a pair of eye-protective glasses when you are handling lasers or optical fibers.

lEnsure that the optical source is switched off before disconnecting optical fiber connectors.

lNever look into the end of an exposed optical fiber or an open connector if you cannot

ensure that the optical source is switched off.

lTo ensure that the optical source is switched off, use an optical power meter.

lBefore opening the front door of an optical transmission system, ensure that you are not

exposed to laser radiation.

lNever use an optical tool such as a microscope, a magnifying glass, or an eye loupe to look

into the optical fiber connector or end.

Read the following instructions before handling optical fibers:

lOnly the trained personnel can cut and splice optical fibers.

lBefore cutting or splicing an optical fiber, ensure that the optical fiber is disconnected from

the optical source. After disconnecting the optical fiber, use protecting caps to protect all

the optical connectors.

1.1.6 Working at Heights

CAUTION

When working at heights, ensure that the objects do not fall.

When working at heights, ensure that the following requirements must be met:

lThe personnel who work at heights must be trained.

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lThe operating machines and tools should be carried and handled safely to prevent them

from falling.

lSafety measures, such as wearing a helmet and a safety belt, should be taken.

lIn cold regions, warm clothes should be worn before working at heights.

lEnsure that the lifting appliances are well prepared for working at heights.

Lifting Weights

CAUTION

Do not access the areas under the arm of the crane and the goods in suspension when lifting

weights.

lEnsure that the operators have been trained and qualified.

lCheck the weight lifting tools and ensure that they are intact.

lLift the weight only when the weight lifting tools are firmly mounted onto the weight-

bearing object or the wall.

lUse a concise instruction to prevent incorrect operation.

lThe angle between the two cables should be less than or equal to 90o in the lifting of weights

(See Figure 1-2).

Figure 1-2 Lifting a weight

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Safety Guide on Ladder Use

Checking the Ladder

lCheck the ladder before using it. Check the maximum weight that the ladder can support.

lNever overload the ladder.

Placing the Ladder

lThe slant angle is preferred to be 75o. The slant can be measured with the angle square or

with arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladder

on the ground and take protective measures on the base of the ladder against slippage. Place

the ladder on a stable ground.

When climbing the ladder, ensure the following:

lThe gravity of the body does not shift from the edge of the ladder.

lKeep balance on the ladder before performing any operation.

lDo not climb higher than the fourth highest step of the ladder.

If you tend to climb to the roof, the length of the ladder should be at least one meter higher than

the eave, as shown in Figure 1-4.

Figure 1-3 Slant angle

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Figure 1-4 One meter higher than the eave

1.1.7 Mechanical Safety

Drilling

CAUTION

Do not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damage

the electromagnetic shielding and internal cables. Metal shavings from the drilling may result

in a short-circuit of the circuit board if they get into the cabinet.

lBefore drilling a hole on the cabinet, remove the cables from the cabinet.

lDuring the drilling, wear blinkers to protect your eyes.

lDuring the drilling, wear the protective gloves.

lPrevent the metal shavings from getting into the cabinet. After drilling, clean the metal

shavings in time.

Handling Sharp Objects

CAUTION

When carrying the device by hand, wear the protective gloves to prevent injury by sharp objects.

Handling Fans

lWhen replacing a component, place the component, screw, and tool at a safe place to prevent

them from falling into the running fan.

lWhen replacing the ambient equipment around the fan, do not place the finger or board

into the running fan until the fan is switched off and stops running.

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Moving Heavy Objects

Wear the protective gloves when moving heavy objects.

CAUTION

lBe careful when moving heavy objects.

lWhen moving the chassis outwards, be aware about the unfixed or heavy objects on the

chassis to prevent injury.

lTwo persons should be available to move a chassis; one person must not move a heavy

chassis. When moving a chassis, keep your back straight and move stably to prevent a

sprain.

lWhen moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold the

handle of the installed modules in the chassis, such as the power module, fan module, or

board.

1.1.8 Others

Inserting and Removing a Board

CAUTION

When inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to prevent

any bent pins on the backplane.

lInsert the board along the guide rail.

lAvoid contact of one board with another to prevent short-circuit or damage.

lDo not remove the active board before powering off.

lWhen holding a board in hand, do not touch the board circuit, components, connectors, or

connection slots.

Bundling Signal Cables

CAUTION

Bundle the signal cables separately from the strong current cables or high voltage cables.

Cabling Requirements

At a very low temperature, movement of the cable may damage the plastic skin of the cable. To

ensure the construction safety, comply with the following requirements:

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lWhen installing cables, ensure that the environment temperature is above 0oC.

lIf cables are stored in the place below 0oC, move the cables into a place at a room

temperature and store the cables for more than 24 hours before installation.

lMove the cables with care, especially at a low temperature. Do not drop the cables directly

from the vehicle.

1.2 Hardware Configuration of the RRU3606

This describes the configuration of equipment and cables of the RRU3606.

1.2.1 RRU3606

The RRU3606 transmits and receives radio signals to realize the communication between the

wireless network and the MSs.

1.2.2 RRU3606 Cables

This describes the PGND cable, power cable, CPRI optical cable, and alarm cable of the

RRU3606.

1.2.1 RRU3606

The RRU3606 transmits and receives radio signals to realize the communication between the

wireless network and the MSs.

The functions of the RRU3606 are described as follows:

lThe RRU3606 receives RF signals from the antenna system, down-converts the signals to

IF signals, and then transmits them to the BBU3900 or the macro BTS after amplification,

analog-to-digital conversion, digital down-conversion, and matched filtering.

lThe RRU3606 receives downlink baseband signals from the BBU3900 or the macro BTS,

forwards data from its cascaded RRU3606, performs filtering and data conversion, and up-

converts RF signals to meet the transmitting frequency requirements.

lThe RRU3606 multiplexes RX and TX signals over RF channels, enabling the RX signals

and TX signals to share the same antenna path. In addition, the RRU3606 filters the RX

signals and TX signals.

1.2.1.1 Appearance of the RRU3606

This describes the dimensions and appearance of the RRU3606.

1.2.1.2 Panels of the RRU3606

The RRU3606 has a bottom panel, cabling cavity panel, and indicator panel.

1.2.1.3 Physical Ports of the RRU3606

The physical ports of the RRU3606 are power supply ports, transmission ports, grounding ports,

and RF ports.

1.2.1.4 Technical Specifications of the RRU3606

This describes the technical specifications of the RRU3606.

Appearance of the RRU3606

This describes the dimensions and appearance of the RRU3606.

The dimensions of the RRU3606 are as follows:

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lHeight x Width x Depth (without the housing) = 480 mm [18.90 in.] x 270 mm [10.63 in.]

x 140 mm [5.51 in.]

lHeight x Width x Depth (with the housing) = 488 mm [19.21 in.] x 280 mm [11.02 in.] x

155 mm [6.10 in.]

The RRU3606 features a modular structure with its ports at the bottom of the RRU3606 and on

the cabling cavity. Figure 1-5 and Figure 1-6 shows the appearance of the RRU3606.

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Figure 1-5 Appearance of the RRU3606 (without the housing)

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Figure 1-6 Appearance of the RRU3606 (with the housing)

Panels of the RRU3606

The RRU3606 has a bottom panel, cabling cavity panel, and indicator panel.

Position of Panels of the RRU3606

Figure 1-7 shows the panels of the RRU3606.

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Figure 1-7 Position of panels of the RRU3606

(1) Bottom (2) Cabling cavity (3) Indicator

Figure 1-8 shows the panels of the RRU3606.

Figure 1-8 Panels of the RRU3606

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Indicators

Table 1-1 lists the indicators on the RRU3606 panel.

Table 1-1 Indicators on the RRU3606 panel

Mark Color Status Description

RUN Green ON The power input is normal,

but the board is faulty.

OFF There is no power input, or

alarms are generated.

ON for 1s and OFF for 1s The board operates normally.

ON for 0.5s and OFF for 0.5s Software is being loaded.

ALM Red ON Fatal alarms

Blinking at 0.5 Hz Minor alarms

OFF No alarm is generated.

TX_ACT Green ON The board operates normally.

OFF

VSWR Red ON Standing wave alarms are

generated.

OFF No standing wave alarm is

generated.

CPRI_W Red/green ON (green) The CPRI link is normal.

ON (red) The optical module receives

exceptional alarms, that is,

local alarms related to the

Loss of Signal (LOS).

ON for 0.5s and OFF for 0.5s

(red)

The CPRI link is out of lock.

OFF The optical module is not in

position or is powered off.

CPRI_E Red/green ON (green) The CPRI link is normal.

ON (red) The optical module receives

exceptional alarms, that is,

local alarms related to the

Loss of Signal (LOS).

ON for 0.5s and OFF for 0.5s

(red)

The CPRI link is out of lock.

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Mark Color Status Description

OFF The optical module is not in

position or is powered off.

Ports

Table 1-2 lists the ports on the RRU3606 panel.

Table 1-2 Ports on the RRU3606 panel

Item Label on the Front Panel Description

Ports at the bottom RX_IN/OUT Reserved port

RET/PWR_SRXU Reserved port

ANT_TX/RXA Main RF transmitting/receiving

port

ANT_RXB Diversity RF receiving port

Ports on the

cabling cavity

RS485/EXT_ALM Alarms port

CPRI_E CPRI ports

CPRI_W

RTN(+) Power supply ports

NEG(-)

PGND PGND crimp piece

Physical Ports of the RRU3606

The physical ports of the RRU3606 are power supply ports, transmission ports, grounding ports,

and RF ports.

Table 1-3 lists the physical ports of the RRU3606.

Table 1-3 Physical ports of the RRU3606

Type Port Description Quantit

Connector Type

Power

supply

ports

RTN(+) -48 V DC power

supply

1 OT terminal

NEG(-)

Transmis

sion ports

CPRI_E CPRI ports 1 ESFP socket

CPRI_W CPRI ports 1 ESFP socket

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Type Port Description Quantit

Connector Type

Alarms

port

RS485/

EXT_ALM

RS485 x1 signal

port

1 DB15

Groundin

g port

- - 4 -

RF port ANT_TX/RXA Main

transmitting/

receiving port

1 Round and waterproof

DIN connector

ANT_RXB Diversity

receiving port

1 Round and waterproof

DIN connector

Reserved

port

RX_IN/OUT Reserved - -

RET/

PWR_SRXU

Reserved - -

NOTE

The specifications for the RRU3606 alarm port are: 0.2 kohm for the closed resistance; 51 kohms for the

open resistance.

Technical Specifications of the RRU3606

This describes the technical specifications of the RRU3606.

Table 1-4 lists the specifications of the RRU3606.

Table 1-4 Technical specifications of the RRU3606

Item Specification

Voltage -48 V (-37 V DC to -60 V DC)

Power consumption ≤ 300 W

Weight The weight of the RRU3606 and housing is no more

than 17.5 kg [38.58 lb.].

Cabinet dimensions (height x width

x depth)

Height x Width x Depth (with the housing): 488 mm

[19.21 in.] x 280 mm [11.02 in.] x 155 mm [6.10 in.]

1.2.2 RRU3606 Cables

This describes the PGND cable, power cable, CPRI optical cable, and alarm cable of the

RRU3606.

1.2.2.1 PGND Cable of the RRU3606

The PGND cable ensures the grounding of the RRU3606.

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1.2.2.2 Power Cable of the RRU3606

This describes the power cable of the RRU3606. The -48 V DC power cable feeds external -48

V DC power to the RRU3606 to provide power supply for the RRU3606.

1.2.2.3 RRU3606 Optical Fibers

RRU3606 optical fibers are used for the connection between the BBU3900 and the RRU3606.

1.2.2.4 Alarm Cable of the RRU3606

The alarm cable leads one RS485 alarm signal from external devices to the RRU3606, thus

monitoring the external devices.

PGND Cable of the RRU3606

The PGND cable ensures the grounding of the RRU3606.

Structure

The green and yellow PGND cable has a cross-sectional area of 16 mm2 [0.02 in.2]. Both ends

of the cable are 2-hole OT terminals. If the PGND cable is provided by the customer, a copper-

core cable with a minimum cross-sectional area of 16 mm2 [0.02 in.2] is recommended.

Figure 1-9 shows the structure of the PGND cable.

Figure 1-9 Structure of the PGND cable

(1) 2-hole OT terminal (2) Heat shrink tube

NOTE

lThe OT terminals of the grounding cable are made on site.

lThe color of the PGND cable is selected according to the local specifications.

Position of the Cable

For the PGND cable of the RRU3606, one end is connected to the grounding hole on the

RRU3606, and the other end is connected to the ground nearby. Figure 1-10 shows the

connections of the PGND cables.

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Figure 1-10 Installation position of the PGND cable

Power Cable of the RRU3606

This describes the power cable of the RRU3606. The -48 V DC power cable feeds external -48

V DC power to the RRU3606 to provide power supply for the RRU3606.

Structure

The RRU3606 uses the -48 V DC shielded power cable. One end of the cable has two OT

terminals, and the other end is bare. Figure 1-11 shows the power cable of the RRU3606.

Figure 1-11 Structure of the -48 V DC power cable

(1) -48 V DC power cable (2) Shielding layer (3) Wire (4) OT terminal

Cable Specifications

The -48 V DC cable is a 2-wire cable, as shown in Table 1-5 and Table 1-6.

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Table 1-5 Pin assignment of the -48 V DC power cable (standard in North America)

Name Color

NEG cable Blue

RTN cable Black

Table 1-6 Pin assignment of the -48 V DC power cable (standard in Europe)

Name Color

NEG cable Blue

RTN cable Brown

Position of the Cable

Connect the OT terminal of the blue wire of the -48 V DC power cable to the NEG (-) port on

the RRU3606 cabling cavity, and connect the black or brown wire to the RTN (+) port of the

RRU3606.

Connect the other end of the -48 V DC power cable to the power supply system at the installation

site.

Figure 1-12 shows the installation position of the power cable on the RRU3606 side.

Figure 1-12 Installation of the power cable on the RRU3606 side

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RRU3606 Optical Fibers

RRU3606 optical fibers are used for the connection between the BBU3900 and the RRU3606.

Structure

The CPRI optical cable is a multi-mode 2-wire cable with LC connectors at both ends. Figure

1-13 shows the CPRT optical fiber.

Figure 1-13 Structure of the CPRI optical fiber

(1) DLC connector (2) Label (3) Fiber tail

Cable

Table 1-7 describes the pin assignment for the fiber tails.

Table 1-7 Pin assignment for the fiber tails

Label Color Connection Position

1A Orange RX port on the RRU3606

1B Gray TX port on the RRU3606

2A Orange TX port on the BBU3900

2B Gray RX port on the BBU3900

Position of the Cable

One end of the CPRI optical fiber is connected to the SFP port of the BBU3900 or to the ODF,

and the other end is connected to the CPRI optical port of the RRU3606. Figure 1-14 shows the

installation position of the CPRI optical fiber on the RRU3606 side.

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Figure 1-14 Structure of the CPRI optical cable

(1) Pluggable optical modules (2) To the BBU3900 or the ODF

Alarm Cable of the RRU3606

The alarm cable leads one RS485 alarm signal from external devices to the RRU3606, thus

monitoring the external devices.

Structure

One end of the alarm cable is a DB15 female connector, and the other end has 8 cord end

terminals, as shown in Figure 1-15.

Figure 1-15 Structure of the alarm cable of the RRU3606

NOTE

If the connector of the alarm cable and the port of the alarm device do not match, remove the cord end

terminals. Prepare the connector on site based on the port type of the alarm device.

Cable

The alarm cable supports one RS485 alarm signal. Table 1-8 lists the pin assignment for the

wires of the RRU3606.

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Table 1-8 Alarm cable of the RRU3606

X1 Pin Cord End

Terminal

Wire Color Wire Type Label

X1.2 X2 White/blue Twisted pair

cable

SWITCH_INP

UT0+

X1.3 X3 Blue GND

X1.6 X4 White/orange Twisted pair

cable

SWITCH_INP

UT1+

X1.7 X5 Orange GND

X1.10 X6 White/green Twisted pair

cable

RS485_TX-

X1.11 X7 Green RS485_TX+

X1.13 X8 White/brown Twisted pair

cable

RS485_RX-

X1.14 X9 Brown RS485_RX+

Position of the Cable

The DB15 male connector of the alarm cable is connected to the RS485/EXT_ALM port on the

RRU3606 cabling cavity, and the other end is connected to the port for Boolean alarm signals

on the external device. Figure 1-16 shows the installation position of the alarm cable on the

RRU3606 side.

Figure 1-16 Installation of the alarm cable on the RRU3606 side

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1.3 Installing Hardware for the RRU3606

This describes the hardware installation, cable distribution, and installation checklist for the

RRU3606.

1.3.1 Installation Information of the RRU3606

This describes the installation modes, requirements for the installation space and cable

distribution, and connections of the cables.

1.3.2 Process of Installing the RRU3606

This describes the installation preparation, installation of the RRU3606, cables, and housing,

and hardware installation check.

1.3.3 Preparations for RRU3606 Installation

This describes the installation tools and the unpacking inspection of the equipment.

1.3.4 Installing the RRU3606

This describes the installation modes for a single RRU3606, two RRU3606s, and three

RRU3606s.

1.3.5 Installing and Removing the Cables of the RRU3606

This describes how to install and remove the cables of the RRU3606 and how to install the cover

of the cabling cavity of the RRU3606.

1.3.6 Powering On the RRU3606

This describes how to power on the RRU3606.

1.3.7 Installing the Shell of the RRU3606

This describes how to install the shell of the RRU3606.

1.3.8 Checklist for the Installation of the RRU3606

This describes the items to be checked after the RRU3606 is installed.

1.3.1 Installation Information of the RRU3606

This describes the installation modes, requirements for the installation space and cable

distribution, and connections of the cables.

1.3.1.1 Installation Modes of the RRU3606

This describes the installation modes of the RRU3606. The RRU3606 can be installed on the

metal pole, wire pole, and wall.

1.3.1.2 Requirements for the Installation Space of the RRU3606s

This describes the requirements for the installation space of a single RRU3606, combination of

RRU3606s, and centralized installation of RRU3606s.

1.3.1.3 Requirements for Routing Cables of the RRU3606

This describes the requirements for routing cables of the RRU3606 to prevent electromagnetic

interference.

1.3.1.4 Connection of the RRU3606 Cables

This describes the connection of the cables of a single RRU3606 and multiple RRU3606s.

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Installation Modes of the RRU3606

This describes the installation modes of the RRU3606. The RRU3606 can be installed on the

metal pole, wire pole, and wall.

Installation Mode of A Single RRU3606

Figure 1-17 shows the installation mode of a single RRU3606.

Figure 1-17 Installation of a single RRU3606

Centralized Installation Mode of Two RRU3606s

Figure 1-18 shows the centralized installation mode of two RRU3606s.

Figure 1-18 Centralized installation of two RRU3606s

Centralized Installation Mode of Three RRU3606s

Figure 1-19 shows the installation mode of three RRU3606s.

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Figure 1-19 Centralized installation of three RRU3606s

Requirements for the Installation Space of the RRU3606s

This describes the requirements for the installation space of a single RRU3606, combination of

RRU3606s, and centralized installation of RRU3606s.

Specific requirements for the installation space of the RRU3606 should be met to facilitate

cabling, operation, and maintenance. The requirements described in this document are based on

engineering experience.

Requirements for the Installation Space of a Single RRU3606

Figure 1-20 shows the requirements for the installation space of a single RRU3606.

Figure 1-20 Installation space (mm) of a single RRU3606

The requirements for the installation space of a single RRU3606 are as follows:

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lUnder the RRU3606, a distance of at least 500 mm [19.69 in.] should be reserved for

cabling. For convenient maintenance, it is recommended that the distance between the

bottom of the RRU3606 and the ground be at least 1200 mm [47.24 in.].

lIn front of the RRU3606, a space of at least 800 mm [31.50 in.] should be reserved for

maintenance.

lAbove the RRU3606, a space of at least 200 mm [7.87 in.] should be reserved for

maintenance.

lTo the left of the RRU3606, a space of at least 600 mm [23.62 in.] should be reserved for

maintenance.

lTo the right of the RRU3606, a space of at least 300 mm [11.81 in.] should be reserved for

maintenance.

Requirements for the minimum installation space of a single RRU3606 are as follows:

lUnder the RRU3606, a space of at least 300 mm [11.81 in.] should be reserved for cabling.

For convenient maintenance, it is recommended that the distance between the bottom of

the RRU3606 and the ground be at least 1200 mm [47.24 in.].

lIn front of the RRU3606, a space of at least 600 mm [23.62 in.] should be reserved for

maintenance.

lAbove the RRU3606, a space of at least 200 mm [7.87 in.] should be reserved for

maintenance.

lTo the left of the RRU3606, a space of at least 400 mm [15.75 in.] should be reserved for

maintenance.

lTo the right of the RRU3606, a space of at least 100 mm [3.94 in.] should be reserved for

maintenance.

Requirements for the Installation Space of Combined RRU3606s

During the combination of RRU3606s, ensure that the installation space reserved for each

RRU3606 meets the requirements. Figure 1-21 shows the requirement for the distance between

two single RRU3606s.

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Figure 1-21 Distance between two single RRU3606s (unit: mm)

The requirements for the distance between two single RRU3606s are as follows:

lThe distance between one RRU3606 and the one to its left or right is no more than 1200

mm [47.24 in.].

lThe distance between one RRU3606 and the one above or below is no more than 800 mm

[31.50 in.].

Requirements for the Centralized Installation Space of RRU3606s

Figure 1-22 shows the requirements for the installation space of multiple RRU3606s.

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Figure 1-22 Centralized installation space of RRU3606s (unit: mm)

Requirements for the centralized installation space of RRU3606s are as follows:

lUnder the RRU3606, at least 500 mm [19.69 in.] space should be reserved for cabling. For

convenient maintenance, it is recommended that the distance between the bottom of the

RRU3606 and the ground be at least 1200 mm [47.24 in.].

lIn front of the RRU3606, a space of at least 800 mm [31.50 in.] should be reserved for

maintenance.

lAbove the RRU3606, a space of at least 200 mm [7.87 in.] should be reserved for

maintenance.

lTo the left of the RRU3606, a space of at least 800 mm [31.50 in.] should be reserved for

maintenance.

lTo the right of the RRU3606, a space of at least 800 mm [31.50 in.] should be reserved for

maintenance.

lThe requirements for the installation space of two or three RRU3606s are identical.

Requirements for the minimum centralized installation space of RRU3606s are as follows:

lUnder the RRU3606, at least 300 mm [11.81 in.] space should be reserved for cabling. For

convenient maintenance, it is recommended that the distance between the bottom of the

RRU3606 and the ground be at least 1200 mm [47.24 in.].

lIn front of the RRU3606, a space of at least 600 mm [23.62 in.] should be reserved for

maintenance.

lAbove the RRU3606, a space of at least 200 mm [7.87 in.] should be reserved for

maintenance.

lTo the left of the RRU3606, a space of at least 600 mm [23.62 in.] should be reserved for

maintenance.

lTo the right of the RRU3606, a space of at least 600 mm [23.62 in.] should be reserved for

maintenance.

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Requirements for Routing Cables of the RRU3606

This describes the requirements for routing cables of the RRU3606 to prevent electromagnetic

interference.

Requirements for routing cables of the RRU3606 are as follows:

lThe positions of power cables should meet the specifications of engineering drawings and

the standards of general cabling.

lDifferent types of cable should be routed separately to prevent cables from twisting.

lAfter all the cables are installed, stick labels or bind tokens to the cables.

lThe bending radius of optical fibers should be no less than 20 times the diameter of the

optical fiber.

lLeave some margin at the bending parts of the optical fibers.

lWhen installing the optical fibers, do not step on or stretch them too tight. Take care to

prevent the optical fibers from touching sharp objects. If the main body of the fiber has

bend marks or press marks and the connectors are damaged, the optical fiber cannot be

used any more.

lThe minimum bending radius of the feeder should be no less than 20 times the diameter of

the feeder.

lThe feeder has no obvious bend or twist marks or bare copper core wires.

lThe connectors of feeders are made in compliance with specifications and connected

correctly. Make sure the feeders do not loosen up.

lEnsure that the two ends of the grounding cables are in good contact and anti-corrosion

treated.

Connection of the RRU3606 Cables

This describes the connection of the cables of a single RRU3606 and multiple RRU3606s.

Connection of the Cables of A Single RRU3606

Figure 1-23 shows the connection of the cables of a single RRU3606.

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Figure 1-23 Connection of the cables of a single RRU3606

Connection of the Cables of Multiple RRU3606s

Figure 1-24 shows the connection of the cables of multiple RRU3606s.

Figure 1-24 Connection of the cables of multiple RRU3606s

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1.3.2 Process of Installing the RRU3606

This describes the installation preparation, installation of the RRU3606, cables, and housing,

and hardware installation check.

Background Information

NOTE

For the following situations, contact Huawei engineers for confirmation.

lYou provide the devices, cables, and connectors yourself.

lYou need to cut a cable of a specified length.

Procedure

Step 1 Unpack and inspect the equipment and the required tools for installation. For details, refer to

1.3.3 Preparations for RRU3606 Installation.

Step 2 Install the backplanes and the RRU3606. Choose an appropriate installation mode according to

the installation scenario. For details on the installation modes, see:

l1.3.4.1 Installing a Single RRU3606

l1.3.4.2 Installing Two RRU3606s in Centralized Mode

l1.3.4.3 Installing Three RRU3606s in Centralized Mode

Step 3 Perform the operations described in 1.3.5 Installing and Removing the Cables of the

RRU3606.

Step 4 Perform the operations described in 1.3.6 Powering On the RRU3606.

Step 5 Perform the operations described in 1.3.7 Installing the Shell of the RRU3606.

Step 6 Perform the operations described in 1.3.8 Checklist for the Installation of the RRU3606.

----End

1.3.3 Preparations for RRU3606 Installation

This describes the installation tools and the unpacking inspection of the equipment.

1.3.3.1 Installation Tools for the RRU3606

This describes the general tools, dedicated tools, and instruments for RRU3606 installation.

1.3.3.2 Unpacking Inspection for the RRU3606

Before installing the equipment, unpack the equipment package and check the equipment.

Installation Tools for the RRU3606

This describes the general tools, dedicated tools, and instruments for RRU3606 installation.

Table 1-9 lists the tools and instruments required for the installation.

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Table 1-9 Tools and instruments

Category List of the Tools

General

tools

Measuring and

marking

instruments

Long tape, ruler (1 m [3.28 ft.]), level instrument, marker,

powder marker, and pencil

Drilling Tools One percussion drill, matched drill bits, and one cleaner

Fastening tools Straight screwdrivers: M3–M6

Cross screwdrivers: M3–M6

Adjustable wrench

Socket wrenches: M6, M8, M12, M14, M17, and M19

Double offset ring spanners: M6, M8, M12, M14, M17, and

M19

Small tools Sharp-nose pliers, diagonal pliers, pliers, hand-held electric

drill, file, handsaw, crowbar, and rubber hammer

Auxiliary tools Brush, nipper, paper knife, bellows, electric irons, solder

wire, fork, and ladders

Dedicated tools Multimeter, 500 V megohm meter (for testing the insulation

resistance), BER tester, and optical power meter

Instruments Earth resistance tester, antistatic wrist strap, antistatic

gloves, cable peeler, crimping pliers, RJ45 connector

crimping pliers, optical connector, and wire punchdown tool

NOTE

lThe tool list is provided by Huawei, and the tool provider is determined through negotiation.

lThe instruments must be calibrated to ensure measurement accuracy.

Unpacking Inspection for the RRU3606

Before installing the equipment, unpack the equipment package and check the equipment.

Context

The requirements for unpacking inspection are as follows:

lBoth the project supervisor and customer representatives must be present to check the

goods.

lWhen unpacking goods, ensure that the total number of products is consistent with the

packing list attached to the packing case, the arrival place is the installation site, the packing

case is in good condition, and the cabinet is not placed upside down.

lDo not unpack if the outer package is damaged or wet, or the equipment is wet and rusty.

Find the cause of the damage and report to the Huawei regional office.

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CAUTION

To protect the equipment and find out the cause, move the unpacked equipment indoor for

proper storage, and take photos of the storage site, rusty or corroded equipment, packing

cases, and packaging materials. Keep these photos and store the unpacked packing cases

and packaging materials.

lIf the products are in good condition, unpack the packing case with a label marked "Built-

in Packing List", take out the packing list, and then check the products according to the

packing list. If any of the products are damaged or missing, fill in the Cargo Replacement

Application Form.

lAfter the unpacking inspection, sign the packing list together with the customer.

CAUTION

lWhen transporting or moving the equipment, components, or parts, prevent them from

colliding with doors, walls, or shelves.

lDo not touch the uncoated surface of the equipment, parts, or components when you wear

sweat soaked or dirty gloves.

Unpacking Wooden Cases

A wooden case is usually made of wooden boards, steel edges, tongues, and foamed angle wraps.

Move the packing case into the equipment room to avoid damage to the equipment during the

transportation.

The process of unpacking inspection for the wooden cases is as follows:

1. Insert the spanner into the hole of the tongue and turn the ejector lever to straighten the

tongue, as shown in Figure 1-25.

Figure 1-25 Straightening the tongue

Spanner

Tongue

Woodenboard

Steeledge

2. Straighten all the tongues that fix the cover, and then remove the cover, as shown in Figure

1-26.

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Figure 1-26 Removing the cover

3. Straighten all the tongues that join the side boards around the wooden case. Then remove

the side boards, as shown in Figure 1-27.

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Figure 1-27 Removing side boards

Unpacking Inspection for Cartons

Cartons are usually used to pack cables, circuit boards, and terminal devices.

The process of the unpacking inspection for cartons is as follows:

1. Check the types and number of boards in the carton according to the label on the carton.

2. Cut the straps using diagonal pliers.

3. Cut the tapes along the seams of the carton cover. Do not insert the knife too deep.

Otherwise, the goods inside may be scratched.

4. Open the carton and take out the foam plate.

5. Check the number of board boxes according to the label on the carton.

6. Check the quantities and types of materials according to the Packing List, and sign on the

list if the quantities and types are correct.

1.3.4 Installing the RRU3606

This describes the installation modes for a single RRU3606, two RRU3606s, and three

RRU3606s.

1.3.4.1 Installing a Single RRU3606

This describes the installation of a single RRU3606 on a metal pole, wire pole, or wall.

1.3.4.2 Installing Two RRU3606s in Centralized Mode

This describes how to install two RRU3606s in centralized mode. You can install two RRU3606s

on a metal pole or wall.

1.3.4.3 Installing Three RRU3606s in Centralized Mode

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This describes how to install three RRU3606s in centralized mode. You can install three

RRU3606s on a metal pole or wall.

Installing a Single RRU3606

This describes the installation of a single RRU3606 on a metal pole, wire pole, or wall.

1.3.4.1.1 Installing the Backplane of a Single RRU3606 on a Metal Pole

This describes how to install the backplane of a single RRU3606 on a metal pole.

1.3.4.1.2 Installing the Backplane of a Single RRU3606 on a Wire Pole

This describes how to install the backplane of a single RRU3606 on a wire pole.

1.3.4.1.3 Installing the Backplane of a Single RRU3606 on the Wall

This describes how to install the backplane of a single RRU3606 on the wall.

1.3.4.1.4 Installing a Single RRU3606

This describes how to install a single RR3606 on a metal pole. The procedures for installing the

RRU3606 on the backplane in different scenarios are the same.

1. Installing the Backplane of a Single RRU3606 on a Metal Pole

This describes how to install the backplane of a single RRU3606 on a metal pole.

Prerequisite

A metal pole whose diameter is 60 mm [2.36 in.] to 110 mm [4.33 in.] is available.

Procedure

Step 1 Determine the installation position of the backplane on the metal pole according to the

construction drawing and 1.3.1.2 Requirements for the Installation Space of the

RRU3606s.

NOTE

The height for installing the fixtures on the metal pole ranges from 1200 mm [47.24 in.] to 1600 mm [62.99

in.].

Step 2 Mount the fixtures on the metal pole and ensure that the two fixtures are level on the horizontal

plane, as shown in Figure 1-28.

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Figure 1-28 Installing the upper fixtures

NOTE

There are two sets of installation holes for fixing the fixtures. The installation holes on the inside fit 60

mm [2.36 in.] into 95 mm [3.74 in.] bolts, and the installation holes on the outside fit 90 mm [3.54 in.] into

110 mm [4.33 in.] bolts, as shown in Figure 1-29.

Figure 1-29 Installation holes for fixing fixtures

(1) Installation holes on the inside (2) Installation holes on the outside

Step 3 Use a level bar to adjust the level of the fixtures.

Step 4 Choose the installation holes marked 1 for general mounting brackets, as shown in Figure

1-30.

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Figure 1-30 Choosing installation holes for mounting brackets

Step 5 Install the general mounting bracket into the installation hole at the rear of the backplane by

using three M6x20 bolts, as shown in Figure 1-31.

Figure 1-31 Installing general mounting brackets

Step 6 Install the fixtures into the upper installation hole at the rear of the backplane through two

M10x40 bolts, as shown in Figure 1-32.

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Figure 1-32 Installing the fixtures at the rear of the backplane

Step 7 Mount the backplane to the fixture of the metal pole, as shown in Figure 1-33.

Figure 1-33 Mounting the backplane

Step 8 Fasten the fixture to the fixtures that are installed at the lower part of the backplane of the metal

pole through two M10x110 bolts, as shown in Figure 1-34.

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Figure 1-34 Fastening the lower fixtures

NOTE

There are two sets of installation holes for fixing the fixtures. The installation holes on the inside are

provided for 60 mm [2.36 in.] to 95 mm [3.74 in.] bolts, and the installation holes on the outside are provided

for 90 mm [3.54 in.] to 110 mm [4.33 in.] bolts, as shown in Figure 1-29.

----End

2. Installing the Backplane of a Single RRU3606 on a Wire Pole

This describes how to install the backplane of a single RRU3606 on a wire pole.

Prerequisite

A wire pole whose diameter is 30.48 cm [12 in.] to 38.1 cm [15 in.] is available.

Procedure

Step 1 Determine the installation position of the backplane on the wire pole according to the

construction drawing and 1.3.1.2 Requirements for the Installation Space of the

RRU3606s.

Step 2 Insert the bundling tape through fixtures. Figure 1-35 shows the required fixtures.

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Figure 1-35 Installing the fixtures on a wire pole

Step 3 Clasp the tightening hook to a proper square hole of the bundling tape in the installation position

on the wire pole, as shown in Figure 1-36.

Figure 1-36 Installing the bundling tape

Step 4 Use a wrench to tighten the nut until the bundling tape is fastened around the wire pole, as shown

in Figure 1-37.

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Figure 1-37 Tightening the bundling tape

Step 5 Choose the installation holes marked 1 for general mounting brackets, as shown in Figure

1-38.

Figure 1-38 Choosing installation holes for mounting brackets

Step 6 Install the general mounting bracket into the installation hole at the rear of the backplane through

three M6 x 20 bolts, as shown in Figure 1-39.

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Figure 1-39 Installing general mounting brackets

Step 7 Install the fixtures in the upper installation hole at the rear of the backplane through two M10 x

30 bolts, as shown in Figure 1-40.

Figure 1-40 Installing the fixtures at the rear of the backplane

Step 8 Mount the backplane to the fixture of the metal pole, as shown in Figure 1-41.

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Figure 1-41 Mounting the backplane

Step 9 Use the bundling tape to fasten the fixtures at the lower part of the backplane on the wire pole,

as shown in Figure 1-42.

Figure 1-42 Fastening the backplane through the bundling tape

----End

3. Installing the Backplane of a Single RRU3606 on the Wall

This describes how to install the backplane of a single RRU3606 on the wall.

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Procedure

Step 1 Determine the installation position on the wall for a single RRU3606.

1. Determine the position on the backplane of the RRU3606 for installing the expansion bolts,

as shown in Figure 1-43.

Figure 1-43 Installing the expansion bolts on the backplane

2. Determine the installation holes on the wall, as shown in Figure 1-44.

Figure 1-44 Installation holes on the wall

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NOTE

lThe height for installing the RRU3606 on the wall ranges from 1200 mm [47.24 in.] to 1600 mm

[62.99 in.].

lPlace the backplane against the wall and use a marking pen to mark the anchor points. You can

also mark the anchor points according to the inter-hole distance.

Step 2 Drill holes on the marks and install the expansion bolts, as shown in Figure 1-45.

Figure 1-45 Drilling holes and installing expansion bolts

1. Use a percussion drill with a φ14 drill bit to drill holes on the marks. The depth of the holes

ranges from 52 mm [2.05 in.] to 60 mm [2.36 in.].

2. Use a cleaner to clear the dust inside and around the holes. If the inter-hole distance is too

long or too short, locate and drill holes again.

3. Tighten slightly the expansion bolt and feed it into the hole vertically. Use a rubber hammer

to hit the expansion tube until it is fully buried in the wall.

4. Remove the M10x75 bolt, filling tube, spring washer M10, and flat washer M10.

CAUTION

Dissemble the expansion bolt, and ensure that the expansion tube is fully buried in the wall.

Otherwise, the backplane is placed unevenly.

Step 3 Fix the backplane, as shown in Figure 1-46.

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Figure 1-46 Fixing the backplane

1. Place the backplane in the installation position against the wall.

2. Get ready four M10x75 bolts, fit the M10 spring washer, M10 flat washer, and insulation

washer into each of the bolt, and then fasten the assembled bolts into the nut of the expansion

tube across the holes on the backplane and insulation plate.

CAUTION

When installing the bolts, remove the filling tube of the expansion bolt through the

insulation washer and insulation plate that are delivered with the backplane, as shown in

Figure 1-47.

Figure 1-47 Filling tube, insulation washer, and insulation plate

Step 4 Use a wrench to rotate the M10x75 bolt clockwise and tighten the expansion bolt to fix the

backplane on the wall.

----End

4. Installing a Single RRU3606

This describes how to install a single RR3606 on a metal pole. The procedures for installing the

RRU3606 on the backplane in different scenarios are the same.

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Prerequisite

lThe backplane of the RRU3606 is already installed.

lIf the RRU3606 is to be installed on a metal pole, the grounding protection cable of the

metal pole is already correctly connected.

Installation Instructions

The RRU3606 can be installed in two modes. In one mode, the back of the RRU3606 touches

the backplane (front mode); in the other mode, the front of the RRU3606 touches the backplane

(rear mode). This document takes the installation of the RRU3606 on the metal pole as an

example to illustrate the front and back installation modes of the RRU3606, as shown in Figure

1-48.

Figure 1-48 Front and back installation modes of the RRU3606

NOTE

lThe RRU3606 has a plastic shell. In Figure 1-48, the plastic shell is removed so that you can clearly

see the front and back installation modes.

lBy default, the plastic shell is installed for the RRU3606 in front installation mode.

Procedure

Step 1 Use two M6x20 screws to fix the mounting bracket to the RRU3606, as shown in Figure

1-49.

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Figure 1-49 Fixing the mounting bracket

Step 2 Fit the hooks of the mounting bracket into the slots of the backplane, as shown in Figure 1-50.

Figure 1-50 Installing the RRU3606

Step 3 Use two M6x20 screws to fix the RRU3606 to the backplane through the installation holes at

the bottom of the backplane, as shown in Figure 1-51.

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Figure 1-51 Fixing the RRU3606

----End

Installing Two RRU3606s in Centralized Mode

This describes how to install two RRU3606s in centralized mode. You can install two RRU3606s

on a metal pole or wall.

1.3.4.2.1 Installing the Backplanes of Two RRU3606s on the Metal Pole

This describes how to install the backplanes of two RRU3606s on the metal pole.

1.3.4.2.2 Installing the Backplanes of Two RRU3606s on the Wall

This describes how to install the backplanes of two RRU3606s on the wall.

1.3.4.2.3 Installing Two RRU3606s in Centralized Mode

This describes how to install two RRU3606s in centralized mode. In different scenarios, the

procedures for installing two RRU3606s on the backplanes are the same. This document takes

the pole installation scenario as an example.

1. Installing the Backplanes of Two RRU3606s on the Metal Pole

This describes how to install the backplanes of two RRU3606s on the metal pole.

Prerequisite

A metal pole whose diameter is 60 mm [2.36 in.] to 110 mm [4.33 in.] is available.

Installation Instructions

You can install two RRU3606s on the metal pole in either of the following modes:

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lSide-by-side mode

lBack-to-back mode

Figure 1-52 shows the top view of the RRU3606s installed in side-by-side mode.

Figure 1-52 Top view of the RRU3606s installed in side-by-side mode

Figure 1-53 shows the top view of the RRU3606s installed in back-to-back mode.

Figure 1-53 Top view of the RRU3606s installed in back-to-back mode

Installation Procedure

lSide-by-side mode

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1. Install the first backplane. For details, see 1.3.4.1.1 Installing the Backplane of a

Single RRU3606 on a Metal Pole.

2. Install the second backplane through installation holes marked 2 in Figure 1-54.

Figure 1-54 Choosing installation holes for the mounting bracket

3. Use two M6x20 screws to fix the general mounting bracket to the backplane through

the installation holes of the mounting bracket and the corresponding installation holes

at the bottom of the backplane, as shown in Figure 1-55.

Figure 1-55 Installing the general mounting bracket at the bottom of the backplane

4. Fit the assembly hook of the second backplane into the center of the double RRU

assembly slot of the first backplane, as shown in Figure 1-56.

Figure 1-56 Assembling two backplanes

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5. Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown

in Figure 1-57.

Figure 1-57 Fastening the screws on the backplanes

lBack-to-back mode

1. Install the first backplane. For details, refer to 1.3.4.1.1 Installing the Backplane of

a Single RRU3606 on a Metal Pole.

2. Install the second backplane through installation holes marked 1 in Figure 1-54.

3. Fix the general mounting bracket to the second backplane through the installation

holes at the rear of the second backplane, as shown in Figure 1-58.

Figure 1-58 Installing the general mounting bracket

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4. Hang the backplane to the fixture at the other side of the metal pole, as shown in

Figure 1-59.

Figure 1-59 Installing the second backplane

5. Get ready two M10x40 long screws, fit an M10 spring washer, M10 flat washer, and

insulation washer into each of the screws, and then use the screws to fix the second

backplane to the fixture of the metal pole, as shown in Figure 1-60.

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Figure 1-60 Fixing the second backplane

2. Installing the Backplanes of Two RRU3606s on the Wall

This describes how to install the backplanes of two RRU3606s on the wall.

Procedure

Step 1 Install the first backplane. For details, refer to 1.3.4.1.3 Installing the Backplane of a Single

RRU3606 on the Wall.

Step 2 Install the other backplane through installation holes marked 2 in Figure 1-61.

Figure 1-61 Choosing installation holes for the mounting bracket

Step 3 Use two M6x20 screws to fix the general mounting bracket to the backplane through the

installation holes of the mounting bracket and the corresponding installation holes at the bottom

of the backplane, as shown in Figure 1-62.

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Figure 1-62 Installing the general mounting bracket at the bottom of the backplane

Step 4 Fit the assembly hook of the second backplane into the center of the double RRU assembly slot

of the first backplane, as shown in Figure 1-63.

Figure 1-63 Assembling two backplanes

Step 5 Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown in Figure

1-64.

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Figure 1-64 Fastening the screws on the backplanes

----End

3. Installing Two RRU3606s in Centralized Mode

This describes how to install two RRU3606s in centralized mode. In different scenarios, the

procedures for installing two RRU3606s on the backplanes are the same. This document takes

the pole installation scenario as an example.

Prerequisite

lThe backplanes of the RRU3606s are already installed.

lIf the RRU3606s are to be installed on a metal pole, the protection grounding cable of the

metal pole is already installed.

Installation Instructions

There are two modes for the installation of backplanes on a metal pole. Accordingly, there are

two modes for the installation of the RRU3606s on a metal pole. You should choose one of the

following modes based on the installation mode of the backplanes:

lSide-by-side mode

lBack-to-back mode

Installation Procedure

lSide-by-side mode

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CAUTION

The RRU3606 on the left must be installed in rear mode, and the RRU3606 on the right

must be installed in front mode. In this way, the cabling cavities face the outside.

1. Remove the plastic shell of the RRU3606 that is to be installed in rear mode, as shown

in Figure 1-65.

Figure 1-65 Removing the plastic shell

2. Install the RRU3606 into the plastic shell in rear mode, as shown in Figure 1-66.

Figure 1-66 Installing the RRU3606 in rear mode

3. Use two M6x20 screws to fix the mounting bracket to the RRU3606, as shown in

Figure 1-67.

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Figure 1-67 Fixing the mounting bracket to the RRU3606

4. Fit the hook of the RRU3606 to be installed in rear mode into the outermost slot on

the front of the side backplane, as shown in Figure 1-68.

Figure 1-68 Installing the first RRU3606

5. Use two M6x20 screws to fix the RRU3606 to the backplane through the installation

holes at the bottom of the backplane, as shown in Figure 1-69.

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Figure 1-69 Fixing the RRU3606

6. Fit the hook of the RRU3606 to be installed in front mode into the slot at the rear of

the side backplane, as shown in Figure 1-70.

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Figure 1-70 Installing the second RRU3606

7. Use two M6x20 screws to fix the RRU3606 to the backplane through the installation

holes at the bottom of the backplane, as shown in Figure 1-71.

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Figure 1-71 Fixing the RRU3606

lBack-to-back mode

1. Install the first RRU3606. For details, refer to 1.3.4.1.4 Installing a Single

RRU3606.

2. If the second RRU3606 is to be installed in front mode, follow the same way as you

install the first RRU3606. If the second RRU3606 is to be installed in rear mode, you

need to remove the shell first, and then install the RRU3606 in the shell in rear mode,

as shown in Figure 1-65 and Figure 1-66.

NOTE

It is recommended that the second RRU3606 be installed in rear mode so that the cabling

cavities of the two RRU3606s are on the same side, as shown in Figure 1-72.

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Figure 1-72 Installing the RRU3606s (cabling cavities on the same side)

Installing Three RRU3606s in Centralized Mode

This describes how to install three RRU3606s in centralized mode. You can install three

RRU3606s on a metal pole or wall.

1.3.4.3.1 Installing the Backplanes of Three RRU3606s on the Metal Pole

This describes how to install the backplanes of three RRU3606s on a metal pole.

1.3.4.3.2 Installing the Backplanes of Three RRU3606s on the Wall

This describes how to install the backplanes of three RRU3606s on the wall.

1.3.4.3.3 Install Three RRU3606s in Centralized Mode

This describes how to install a single RR3606 on a metal pole. The procedures for installing

three RRU3606s on the backplane in different scenarios are the same.

1. Installing the Backplanes of Three RRU3606s on the Metal Pole

This describes how to install the backplanes of three RRU3606s on a metal pole.

Prerequisite

A metal pole whose diameter is 60 mm [2.36 in.] to 110 mm [4.33 in.] is available.

Installation Instructions

You can install the three RRU3606s at the same side, that is, in side-by-side mode. Alternatively,

you can install two RRU3606s at one side of the pole and the other RRU3606 at the opposite

side, that is, in 2+1 mode, which facilitates carrier expansion.

Figure 1-73 shows the top view of the RRU3606s installed in side-by-side mode.

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Figure 1-73 Top view of the RRU3606s installed in side-by-side mode

Figure 1-74 shows the top view of the RRU3606s installed in 2+1 mode.

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Figure 1-74 Top view of the RRU3606s installed in 2+1 mode

NOTE

lThe RRU3606s can be installed in rear or front mode. You should choose a proper mode for each

RRU3606 so that the cabling cavities face the space reserved for operation and maintenance.

lThe side-by-side mode is described here. For details on the 2+1 mode, see 1.3.4.1.1 Installing the

Backplane of a Single RRU3606 on a Metal Pole and 1.3.4.2.1 Installing the Backplanes of Two

RRU3606s on the Metal Pole.

Installation Procedure

lSide-by-side mode

1. Install the first backplane. For details, refer to 1.3.4.1.1 Installing the Backplane of

a Single RRU3606 on a Metal Pole.

2. Install the other backplane through installation holes marked 2 in Figure 1-75.

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Figure 1-75 Choosing installation holes for the mounting bracket

3. Use two M6x20 screws to fix the general mounting bracket to the backplane through

the installation holes of the mounting bracket and the corresponding installation holes

at the bottom of the second backplane, as shown in Figure 1-76.

Figure 1-76 Installing the general mounting bracket at the bottom of the backplane

4. Fit the assembly hook of the second backplane into the left part of the three-RRU

assembly slot of the first backplane, as shown in Figure 1-77.

Figure 1-77 Assembling two backplanes

5. Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown

in Figure 1-78.

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Figure 1-78 Fastening the screws on the backplanes

6. Fit the assembly hook of the third backplane into the right part of the three-RRU

assembly slot of the first backplane, as shown in Figure 1-79.

Figure 1-79 Installing the third backplane

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7. Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown

in Figure 1-80.

Figure 1-80 Fastening the screws on the backplanes

2. Installing the Backplanes of Three RRU3606s on the Wall

This describes how to install the backplanes of three RRU3606s on the wall.

Procedure

Step 1 Install the first backplane. For details, refer to 1.3.4.1.3 Installing the Backplane of a Single

RRU3606 on the Wall.

Step 2 Install the second backplane through installation holes marked 2 in Figure 1-73.

Figure 1-81 Choosing installation holes for the mounting bracket

Step 3 Use two M6x20 screws to fix the general mounting bracket to the backplane through the

installation holes of the mounting bracket and the corresponding installation holes at the bottom

of the second backplane, as shown in Figure 1-74.

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Figure 1-82 Installing the general mounting bracket at the bottom of the backplane

Step 4 Fit the assembly hook of the second backplane into the left part of the three-RRU assembly slot

of the first backplane, as shown in Figure 1-75.

Figure 1-83 Assembling two backplanes

Step 5 Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown in Figure

1-76.

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Figure 1-84 Fastening the screws on the backplanes

Step 6 Fit the assembly hook of the third backplane into the right part of the three-RRU assembly slot

of the first backplane, as shown in Figure 1-77.

Figure 1-85 Installing the third backplane

Step 7 Fasten the M6x20 screws in the center and at the bottom of the backplanes, as shown in Figure

1-78.

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Figure 1-86 Fastening the screws on the backplanes

----End

3. Install Three RRU3606s in Centralized Mode

This describes how to install a single RR3606 on a metal pole. The procedures for installing

three RRU3606s on the backplane in different scenarios are the same.

Prerequisite

lThe backplane of the RRU3606 is already installed.

lIf the RRU3606 is to be installed on a metal pole, the grounding protection cable of the

metal pole is already correctly connected.

CAUTION

lWhen installing three RRU3606s in centralized mode, install the RRU3606 in the middle

first. Otherwise, the RRU3606 in the middle cannot be installed.

lThe RRU3606s in the middle and on the right must be installed in front mode, and the

RRU3606 on the left must be installed in rear mode. In this way, the cabling cavity faces the

outside.

lWhen installing three RRU3606s, fit the hook on the mounting bracket into the outermost

slot on the backplane.

Procedure

Step 1 Use two M6x20 screws to fix the mounting bracket to the RRU3606, as shown in Figure

1-87.

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Figure 1-87 Fixing the mounting bracket

Step 2 Fit the hook of the RRU3606 into the three-RRU assembly slot at the rear of the backplane on

the left, as shown in Figure 1-88.

Figure 1-88 Installing the first RRU3606

Step 3 Use two M6x20 screws to fix the RRU3606 to the backplane through the installation holes at

the bottom of the backplane, as shown in Figure 1-89.

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Figure 1-89 Fixing the RRU3606

Step 4 Remove the plastic shell of the RRU3606 that is to be installed in rear mode, as shown in Figure

1-90.

Figure 1-90 Removing the plastic shell

Step 5 Install the RRU3606 into the plastic shell in rear mode, as shown in Figure 1-91.

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Figure 1-91 Installing the RRU3606 in rear mode

Step 6 Use two M6x20 screws to fix the mounting bracket to the RRU3606 that is installed in the rear

mode, as shown in Figure 1-87.

Step 7 Fit the hook of the RRU3606 that is installed in rear mode into the slot at the front of the backplane

on the left, as shown in Figure 1-92.

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Figure 1-92 Installing the second RRU3606

Step 8 Use two M6x20 screws to fix the RRU3606 to the backplane through the installation holes at

the bottom of the backplane, as shown in Figure 1-93.

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Figure 1-93 Fixing the second RRU3606

Step 9 Use two M6x20 screws to fix the mounting bracket to the third RRU3606, as shown in Figure

1-87.

Step 10 Fit the hook of the RRU3606 to be installed in front mode into the slot at the rear of the backplane

on the right, as shown in Figure 1-94.

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Figure 1-94 Installing the third RRU3606

Step 11 Use two M6x20 screws to fix the RRU3606 to the backplane through the installation holes at

the bottom of the backplane, as shown in Figure 1-95.

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Figure 1-95 Fixing the third RRU3606

----End

1.3.5 Installing and Removing the Cables of the RRU3606

This describes how to install and remove the cables of the RRU3606 and how to install the cover

of the cabling cavity of the RRU3606.

1.3.5.1 Opening the Cover of the Cabling Cavity of the RRU3606

This describes how to open the cover of the cabling cavity.

1.3.5.2 Installing the Protection Grounding Cable of the RRU3606

This describes how to install the protection grounding cable of the RRU3606.

1.3.5.3 Installing the Power Cable of the RRU3606

This describes how to install the power cable of the RRU3606.

1.3.5.4 Installing the RF Jumper of the RRU3606

This describes how to install the RF jumper of the RRU3606.

1.3.5.5 Installing the Optical Fiber of the RRU3606

This describes how to install optical fibers for the RRU3606.

1.3.5.6 Installing the Alarm Cable of the RRU3606

This describes how to install the alarm cable of the RRU3606.

1.3.5.7 Installing the Cover of the Cabling Cavity

This describes how to install the cover of the cabling cavity.

Opening the Cover of the Cabling Cavity of the RRU3606

This describes how to open the cover of the cabling cavity.

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Procedure

Step 1 Loosen the six captive screws on the cover of the cabling cavity, as shown in Figure 1-96.

Figure 1-96 Loosening the captive screws on the cover of the cabling cavity

Step 2 Open the cover of the cabling cavity, as shown in Figure 1-97.

Figure 1-97 Opening the cover of the cabling cavity

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CAUTION

Waterproof rubber sticks are preinstalled in the wiring trough. Keep unused waterproof rubber

sticks for future use.

----End

Installing the Protection Grounding Cable of the RRU3606

This describes how to install the protection grounding cable of the RRU3606.

Procedure

Step 1 Route the protection grounding cable. For details, see 1.3.1.3 Requirements for Routing

Cables of the RRU3606.

Step 2 Prepare OT terminals for the protection grounding cable.

Step 3 Install the protection grounding cable of the RRU3606, as shown in Figure 1-98.

Figure 1-98 Installing the protection grounding cable

CAUTION

When installing the OT terminals, ensure that the crimping socket faces the correct direction, as

shown in Figure 1-99.

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Figure 1-99 Direction of the crimping socket

Step 4 Connect the other end of the protection grounding cable to the closest grounding bar.

----End

Installing the Power Cable of the RRU3606

This describes how to install the power cable of the RRU3606.

Prerequisite

CAUTION

If a DC power cable is used to supply external power to the RRU3606, the power cable must be

a shielded power cable. Otherwise, the equipment is prone to lightning strikes.

Procedure

Step 1 Route the power cable. For details, see 1.3.1.3 Requirements for Routing Cables of the

RRU3606.

Step 2 Prepare the input terminal of the power cable, as shown in Figure 1-100.

Figure 1-100 Input terminal of the power cable

(1) -48 V DC power cable (2) Shielding layer (3) Wire (4) OT terminal

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The procedure for preparing the input terminal is as follows:

1. Determine the lengths of each cable section according to the labels on the inside of the

cabling cavity. Figure 1-101 shows the labels.

Figure 1-101 Labels for preparing the power cable

2. Based on the labels, peel part of the outer jacket and shielding layer, and then peel part of

the jacket according to the labels, as shown in Figure 1-102.

Figure 1-102 Peeling the cable

3. Prepare OT terminals at the two wires, as shown in Figure 1-103.

Figure 1-103 OT terminals of the power cable

4. Based on the labels, peel about 15 mm [0.59 in.] of the outer jacket to expose the shielding

layer, as shown in Figure 1-104.

Figure 1-104 Peeling the outer jacket

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CAUTION

This step can be performed only after the previous steps are complete. Otherwise, the

exposed part of the shielding layer becomes messy.

Step 3 Take out the waterproof sticks in the cabling trough in the cabling cavity, and then route the

power cable along the cabling trough. Figure 1-105 shows the position of the cabling trough.

Figure 1-105 Position of the cabling trough

Step 4 Open the cover above the power cable input terminal, as shown in Figure 1-106.

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Figure 1-106 Opening the cover above the power cable input terminal

Step 5 Connect the OT terminal of the -48 V wire (blue) to the terminal marked NEG (-) in the cabling

cavity, connect the OT terminal of the GND wire (black or brown) to the terminal marked RTN

(+) in the cabling cavity, and then fasten the screw, as shown in Figure 1-107.

Figure 1-107 Installing the power cable

Step 6 Remove the screw at the cable clip (marked PGND) of the power cable. Figure 1-106 shows

the position of the cable clip.

Step 7 Use the cable clip to fix the exposed part of the shielding layer at the input terminal of the power

cable, and then fasten the screw, as shown in Figure 1-108.

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Figure 1-108 Fixing the exposed part of the shielding layer

CAUTION

Ensure that the cable clip is pressed against the shielding layer instead of the outer jacket or the

wires.

Step 8 Close the cover above the power cable input terminal.

Step 9 Bundle the power cable.

Step 10 Do as follows to connect the other end of the power cable:

1. Peel about 50 mm [1.97 in.] of the outer jacket.

2. Peel part of the shielding layer and twist this part. Then, insert the twisted part of the

shielding layer into a heat shrink tube (φ5), as shown in Figure 1-109.

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Figure 1-109 Peeling the shielding layer

3. Prepare OT terminals at the other end of the shielding layer.

4. At the peeling point of the shielding layer, use a heat shrink tube (φ14) to implement heat

shrink processing, as shown in Figure 1-110.

Figure 1-110 Heat shrink processing

5. Connect the OT terminals at the shielding layer to the corresponding grounding bar of the

power supply equipment.

6. Prepare OT terminals for the -48 V wire (blue) and GND wire (black or brown), and then

connect the terminals to corresponding wiring terminals of the power supply equipment.

----End

Installing the RF Jumper of the RRU3606

This describes how to install the RF jumper of the RRU3606.

Procedure

Step 1 Based on the distance between the bottom of the RRU3606 and the RF feeder, prepare a RF

jumper of proper length with a proper margin.

Step 2 Prepare a DIN-type connector for the RF jumper.

Step 3 Connect the RF jumper to the RF ANT_TX/RXA and ANT_RXB ports of the RRU3606, as

shown in Figure 1-111.

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Figure 1-111 Installing the RF jumper

Step 4 Connect the other end of the RF jumper to the feeder.

Step 5 Use waterproofing and insulating tape to waterproof and seal the connection points at both ends

of the RF jumper.

NOTE

lWrap each connection point with three layers of tape, and ensure that each layer covers at least 50%

of the previous layer.

lEnsure that each layer of tape is evenly and tightly stretched. In this way, the tape does not get loose.

----End

Installing the Optical Fiber of the RRU3606

This describes how to install optical fibers for the RRU3606.

Prerequisite

Context

Procedure

Step 1 Insert the optical module into the CPRI_W port in the cabling cavity of the RRU3606.

Step 2 Insert the connector at one end of the optical fiber into the optical module.

Step 3 Remove the screws on the cable clip of the optical fiber and the waterproof rubber sticks in the

cabling trough of the optical fiber.

Step 4 Route the optical fiber along the cabling trough in the cabling cavity, use the cable clip to fix

the optical fiber, and then fasten the screw on the cable clip. Figure 1-112 shows how to install

the optical fiber.

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Figure 1-112 Installing the optical fiber

(1) Pluggable optical modules (2) To the BBU3900

Step 5 Route the optical fiber to the BBU3900.

Step 6 Connect the other end of the optical fiber to the optical fiber port of the BBU3900.

----End

Installing the Alarm Cable of the RRU3606

This describes how to install the alarm cable of the RRU3606.

Procedure

Step 1 Lead the alarm cable through the protection tube, and determine the length of the part of the

cable outside the protection tube according to the actual situation.

Step 2 Connect the DB15 connector of the alarm cable to the RS485/EXT_ALM port in the cabling

cavity of the RRU3606. Figure 1-113 shows how to install the alarm cable.

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Figure 1-113 Installing the alarm cable

Step 3 Remove the waterproof rubber sticks in the wiring trough of the cabling cavity, and then route

the alarm cable along the wiring trough of the cabling cavity.

Step 4 Connect the other end of the alarm cable to the Boolean value signal port of the corresponding

auxiliary device.

Step 5 Take waterproofing and sealing measures for the holding tube.

----End

Installing the Cover of the Cabling Cavity

This describes how to install the cover of the cabling cavity.

Procedure

Step 1 Close the cover of the cabling cavity.

Step 2 Fasten the screws one by one in the sequence shown in Figure 1-114.

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Figure 1-114 Installing the cover of the cabling cavity

CAUTION

The screws of cover must be tightly fastened. The torque requirement is 1.4 N•m.

----End

1.3.6 Powering On the RRU3606

This describes how to power on the RRU3606.

Prerequisites

Before powering on the RRU3606, ensure that:

lThe fixing pieces are securely installed, and the backplanes are properly fixed without

distortion.

lThe power cable, grounding cable, optical fiber, alarm cable, and RF feeder are intact.

lThe power cable is not short-circuited or inversely connected, and the grounding cable is

not short-circuited.

lThe optical fiber, alarm cable, and RF jumper are correctly connected and fixed.

lIf the -48 V DC power supply is used, the external input voltage should be -37 V DC to

-60 V DC.

Procedure

Step 1 Switch on the external power supply equipment of the RRU3606.

Step 2 Check the status of the indicators in the cabling cavity. Table 1-10 lists the meanings of the

indicators.

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Table 1-10 Meanings of the indicators

Indicator Color Status Meaning

RUN Green ON There is power input, but the

RRU3606 is faulty.

OFF There is no power input, or

the RRU3606 is faulty.

ON for 1 second and OFF

for 1 second

The RRU3606 is working

properly.

ON for 0.5 second and OFF

for 0.5 second

The RRU3606 software is

being loaded, or the data of

the RRU3606 is not

configured.

ALM Red ON Fatal alarm

Blinking at 0.5 Hz Minor alarm

OFF No alarm

----End

1.3.7 Installing the Shell of the RRU3606

This describes how to install the shell of the RRU3606.

Background Information

During software installation and system commissioning, if you need to view the status of the

indicators through the cabling cavity, the shell can be installed after system commissioning.

Procedure

Step 1 Attach the shell to the RRU3606 by fitting the hooks of the shell into the slots at the top of the

RRU3606, as shown in Figure 1-115.

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Figure 1-115 Installing the shell

Step 2 Use two M6×14 screws to fix the shell, as shown in Figure 1-115.

----End

1.3.8 Checklist for the Installation of the RRU3606

This describes the items to be checked after the RRU3606 is installed.

Checking the Installation of the Equipment

Before powering on the RRU3606, perform the checks listed in Table 1-11.

Table 1-11 Checklist for the installation of the equipment

SN Item

1The installation position of the equipment is strictly consistent with the design

drawings and meets the requirements for installation space and reserved space.

2 If the RRU3606 is installed on a metal pole or wire pole, the fixing pieces are

securely installed, and the backplanes are properly fixed without distortion.

3 If the RRU3606 is installed on a wall, the installation holes in the backplane are

aligned with the holes in the expansion bolts, and the backplane is in good contact

with the wall and securely installed.

4 The cover of the cabling cavity is tightly closed.

5 The unused wiring troughs in the cabling cavity are filled with waterproof rubber

sticks.

6 The waterproof covers and chains for the ports at the bottom of the RRU3606 are

tightly bound with nearby cables.

7 There is no scratch on the surface of the RRU3606. Otherwise, you must paint the

scratched part.

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SN Item

8The surface of the RRU3606 is clean and tidy, and the labels are complete, correct,

and clear.

9 There are no engineering objects left at the site, for example, tape, binding straps,

and package bags.

Checking the Installation of the Cables

lFor the power cable and protection grounding cable, perform the checks listed in Table

1-12.

Table 1-12 Checklist for the installation of the power cable and protection grounding cable

SN Item

1The power cable and protection grounding cable are not short-circuited or

inversely connected.

2 The power cable and protection grounding cable are bound separately from

the other cables.

3 Labels are attached to both ends of the power cable and protection grounding

cable.

4 The power cable and protection grounding cable are intact.

5 The power cables and protection grounding cables have no weld nugget.

6 No disconnectable devices, such as switches and fuses, are set in the electrical

circuit of the grounding system.

7 The redundant parts of the power cable and protection grounding cable are cut

off.

8 The copper lugs at both ends of the power cable and protection grounding

cable are welded or crimped firmly.

9 The exposed wires at the connection terminals and lug handles are insulated

by insulation tape or heat shrink tubes.

10 Plain washers and spring washers are installed at all connection terminals. The

connection terminals are securely installed and in good contact.

11 The work grounding cable and protection grounding cable of the BTS share

a group of grounding conductors with the lightning and grounding cables of

the building.

lFor the signal cables, perform the checks listed in Table 1-13.

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Table 1-13 Checklist for the installation of the signal cables

SN Item

1The connectors of the signal cables are securely connected.

2 The connectors of the signal cables are intact.

3 The signal cables are intact.

4 The signal cables are bound orderly and tightly. The cable ties are evenly

spaced and fastened with proper force.

5 The redundant parts of the cable ties are removed, and all cuts of the cable ties

are smooth without sharp ends.

6 A margin of 3 mm [0.12 in.] to 5 mm [0.20 in.] is reserved.

7 The placement of the signal cables is convenient for maintenance and capacity

expansion.

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

Power-On Check

Before powering on the RRU3606, you need to check the voltage input to the RRU3606 and the

running status of the RRU3606.

The procedure for the power-on check is as follows:

1. Switch off the primary power supply to the RRU3606.

2. Measure the voltage input to the RRU3606. If the voltage is -37 V DC to -60 V DC, the

primary power supply is functional.

3. Switch on the power supply equipment of the RRU3606.

4. Check whether the status of the RUN indicator in the cabling cavity of the RRU3606 is

normal.

Table 1-14 lists the states of the RUN indicator.

Table 1-14 States of the RUN indicator

State Description

ON There is power input, but the board is faulty.

OFF There is no power input, or the RRU3606 is working

in alarm mode.

ON for 1 second and OFF for 1

second

The board is working properly.

ON for 0.5 second and OFF for

0.5 second

The board software is being loaded.

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1.4 Maintaining the RRU3606

This describes how to maintain the RRU3606.

1.4.1 Routine Maintenance Items of the RRU3606

This describes the routine maintenance items of the RRU3606. During the routine maintenance

of the RRU3606, you need to check the surface, cleanness, and indicators of the equipment.

1.4.2 Powering On and Powering Off the RRU3606

This describes how to power on and power off the RRU3606.

1.4.3 Replacing the RRU3606

This describes how to replace a faulty RRU3606.

1.4.4 Replacing the Cables of the RRU3606

This describes how to replace the cables of the RRU3606. The power cable, RF cable, optical

fiber, and alarm cable of the RRU3606 can be replaced on site.

1.4.1 Routine Maintenance Items of the RRU3606

This describes the routine maintenance items of the RRU3606. During the routine maintenance

of the RRU3606, you need to check the surface, cleanness, and indicators of the equipment.

After the equipment is installed and starts to work properly, you should perform routine

maintenance for the equipment on a regular basis, for example, every month or season. Do as

follows to perform routine maintenance:

lCheck whether the surface of the equipment is intact and whether the labels and marks are

clear.

lCheck whether the equipment is clean. There should not be too much dust accumulated

inside the subrack.

lCheck whether the status of the indicators is normal.

1.4.2 Powering On and Powering Off the RRU3606

This describes how to power on and power off the RRU3606.

1.4.2.1 Powering On the RRU3606

This describes how to power on the RRU3606.

1.4.2.2 Powering Off the RRU3606

This describes how to power off the RRU3606.

Powering On the RRU3606

This describes how to power on the RRU3606.

Prerequisites

Before powering on the RRU3606, ensure that:

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lThe fixing pieces are securely installed, and the backplanes are properly fixed without

distortion.

lThe power cable, grounding cable, optical fiber, alarm cable, and RF feeder are intact.

lThe power cable is not short-circuited or inversely connected, and the grounding cable is

not short-circuited.

lThe optical fiber, alarm cable, and RF jumper are correctly connected and fixed.

lIf the -48 V DC power supply is used, the external input voltage should be -37 V DC to

-60 V DC.

Procedure

Step 1 Switch on the external power supply equipment of the RRU3606.

Step 2 Check the status of the indicators in the cabling cavity. Table 1-16 lists the meanings of the

indicators.

Table 1-15 Meanings of the indicators

Indicator Color Status Meaning

RUN Green ON There is power input, but the

RRU3606 is faulty.

OFF There is no power input, or

the RRU3606 is faulty.

ON for 1 second and OFF

for 1 second

The RRU3606 is working

properly.

ON for 0.5 second and OFF

for 0.5 second

The RRU3606 software is

being loaded, or the data of

the RRU3606 is not

configured.

ALM Red ON Fatal alarm

Blinking at 0.5 Hz Minor alarm

OFF No alarm

----End

Powering Off the RRU3606

This describes how to power off the RRU3606.

Background

You need to power off the RRU3606 on special occasions, for example, when the equipment is

to be transferred to another site, the RRU3606 and cables need to be replaced, or the equipment

is subject to damage resulting from fires, smoke, and water.

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Procedure

Switch off the external power supply equipment of the RRU3606.

----End

1.4.3 Replacing the RRU3606

This describes how to replace a faulty RRU3606.

Preparations

lDetermine the quantity of RRU3606s that need to be replaced and get ready new

RRU3606s.

lRecord the installation positions of the RRU3606s.

lRecord the positions of the screws used to fix the RRU3606s.

lRecord the positions of the ports of all the cables connected to the RRU3606s.

lGet ready wire nippers, bundling tape, an antistatic wrist strap or antistatic gloves, a Phillips

screwdriver, a straight screwdriver, and a wrench.

Procedure

Step 1 Record the information of the carriers.

Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, and

carrier IDs.

Step 2 Block the carriers.

1. Run the BLK RES command to block all the carriers of the sectors where the RRU3606s

to be replaced are configured. It is recommended that you set the value of the priority

parameter to Low.

2. Run the DSP RES command to query whether the carriers are blocked. If they are blocked,

proceed with the next step.

Step 3 Power off the RRU3606s.

Step 4 Remove the RRU3606s to be replaced.

lRemove all the cables connected to the RRU3606s and take appropriate insulation measures.

lFor each RRU3606 to be replaced, remove the two M6x20 screws that are fixed in the

installation holes at the bottom of the backplane.

lRemove the hooks of the mounting brackets from the slots in the backplanes, and then remove

the RRU3606s from the backplanes.

lFor each RRU3606 to be replaced, remove the three M6x20 screws used to fix the mounting

bracket.

Step 5 Install the news RRU3606s.

lTake out the new RRU3606s.

lFor each new RRU3606, use three M6x20 screws to fix the mounting bracket.

lFor each new RRU3606, fit the hooks on the mounting bracket into the slots in the backplane.

lFor each new RRU3606, install two M6x20 screws in the installation holes at the bottom of

the backplane, and then fasten the screws.

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lConnect all the cables to the RRU3606s.

lVerify the installation, and then power on the RRU3606s.

Step 6 Load the software.

If automatic loading is configured for the RRU3606s, the CPU software and FPGA software of

the RRU3606s are automatically loaded from the BAM after the RRU3606s are powered on. If

automatic loading is not configured, you need to run the DLD CBTSSW command to load the

CPU software and FPGA software of the RRU3606s.

Step 7 Unblock the carriers.

Run the UBL RES command to unblock the carriers.

Step 8 Check that the RRU3606s work properly.

Observe the running and alarm indicators of the RRU3606s. Table 1-16 lists the running and

alarm indicators of the RRU3606.

Table 1-16 Running and alarm indicators of the RRU3606

Indicator Color State Description

RUN Green ON The power input is normal,

but the board is faulty.

OFF There is no power input, or

the RRU3606 is working in

alarm mode.

ON for 1 second and OFF for

1 second

The board is working

properly.

ON for 0.5 second and OFF

for 0.5 second

The board software is being

loaded.

ALM Red ON Fatal alarm

Blinking at 0.5 Hz Minor alarm

OFF No alarm

----End

1.4.4 Replacing the Cables of the RRU3606

This describes how to replace the cables of the RRU3606. The power cable, RF cable, optical

fiber, and alarm cable of the RRU3606 can be replaced on site.

1.4.4.1 Replacing the Power Cable of the RRU3606

This describes how to replace the power cable of the RRU3606.

1.4.4.2 Replacing the RF Jumper of the RRU3606

This describes how to replace faulty RF jumpers of the RRU3606.

1.4.4.3 Replacing the Optical Fiber of the RRU3606

This describes how to replace faulty optical fibers of the RRU3606.

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1.4.4.4 Replacing the Alarm Cables of the RRU3606

This describes how to replace faulty alarm cables of the RRU3606.

Replacing the Power Cable of the RRU3606

This describes how to replace the power cable of the RRU3606.

Prerequisite

lGet ready a new power cable.

lRecord the installation of the power supply unit.

lGet ready wire nippers, bundling tape, an antistatic wrist strap or antistatic gloves, a Phillips

screwdriver, a straight screwdriver, and a wrench.

Procedure

Step 1 Route the new power cable in the same way as the faulty power cable is routed.

Step 2 Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, and

carrier IDs.

Step 3 Block the carriers.

1. Run the BLK RES command to block all the carriers of the sector where the power cable

to be replaced is configured. It is recommended that you set the value of the priority

parameter to Low.

2. Run the DSP RES command to query whether the carriers are blocked. If they are blocked,

proceed with the next step.

Step 4 Remove the faulty power cable.

1. Switch off the external power supply equipment of the RRU3606.

2. Open the cover of the cabling cavity and the cover above the power cable input terminal.

3. Loosen the screw at the cable clip (marked PGND) of the power cable.

4. In the cabling cavity, remove the OT terminal of the faulty power cable, and then remove

the faulty power cable.

Step 5 Install the new power cable.

lInstall the OT terminal of the new power cable.

lUse the cable clip to fix the exposed part of the shielding layer, and then fasten the screw.

lClose the cover above the power cable input terminal and the cover of the cabling cavity.

Step 6 Switch on the external power supply equipment of the RRU3606.

Step 7 Block the carriers.

Run the UBL RES command to unblock all the carriers of the sector where the power cable is

configured.

Step 8 Check that the RRU3606s work properly.

Observe the running and alarm indicators of the RRU3606s. Table 1-17 lists the running and

alarm indicators of the RRU3606.

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Table 1-17 Running and alarm indicators of the RRU3606

Indicator Color State Description

RUN Green ON The power input is normal,

but the board is faulty.

OFF There is no power input, or

the RRU3606 is working in

alarm mode.

ON for 1 second and OFF for

1 second

The board is working

properly.

ON for 0.5 second and OFF

for 0.5 second

The board software is being

loaded.

ALM Red ON Fatal alarm

Blinking at 0.5 Hz Minor alarm

OFF No alarm

----End

Postrequisite

Keep the faulty power cable properly, and then clean up the site.

Replacing the RF Jumper of the RRU3606

This describes how to replace faulty RF jumpers of the RRU3606.

Prerequisite

lDetermine the quantity of the RF jumpers to be replaced and their types, and then get ready

new jumpers.

lGet ready a wrench, a feeder cutter, cutting nippers (matching the feeder types), an antistatic

wrist strap or antistatic gloves, and a screwdriver.

Procedure

Step 1 Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, and

carrier IDs.

Step 2 Block the carriers.

1. Run the BLK RES command to block all the carriers of the sectors where the jumpers to

be replaced are configured. It is recommended that you set the value of the priority

parameter to Low.

2. Run the DSP RES command to query whether the carriers are blocked. If they are blocked,

proceed with the next step.

Step 3 Remove the faulty RF jumpers.

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1. Power off the RRU3606.

2. Remove the faulty RF jumpers from the RF jumper ports of the RRU3606.

3. Remove the faulty RF jumpers from the feeder ports.

Step 4 Install new RF jumpers.

1. Connect the DIN connectors of the new RF jumpers to the ANT_TX/RXA and ANT_RXB

ports of the RRU3606.

2. Connect the new RF jumpers to the feeders.

3. Use waterproof tape to protect the connection points at both ends of each RF jumper.

NOTE

lWrap each connection point with three layers of tape, and ensure that each layer covers at least

50% of the previous layer.

lEnsure that each layer of tape is evenly and tightly stretched. In this way, the tape does not get

loose.

4. Stick PVC insulation tape over the waterproof tape in the same way as you stick the

waterproof tape.

5. Power on the RRU3606.

Step 5 Unblock the carriers.

Run the UBL RES command to unblock all the carriers of the sectors where the RF jumpers to

be replaced are configured.

Step 6 Check that the new RF jumpers are functional.

Perform service verification and a calibration test on the carriers of the new RF jumpers. If the

results are normal and alarms are not generated, the replacement is successful. If the replacement

fails, start troubleshooting.

----End

Postrequisite

Keep the faulty power cable properly, and then clean up the site.

Replacing the Optical Fiber of the RRU3606

This describes how to replace faulty optical fibers of the RRU3606.

Prerequisite

lDetermine the quantity of the optical fibers to be replaced and their types, and then get

ready new jumpers.

lCheck that the new optical fibers are intact.

lRecord the installation positions of the optical fibers.

lGet ready an antistatic wrist strap or antistatic gloves, a Philips screwdriver, a straight

screwdriver, an antistatic box or bag, dust-free cloth, a fiber cleaning box, a cable cutter,

and tape.

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CAUTION

lAfter an optical fiber is removed from the optical module, do not look at the light beam with

naked eyes.

lWhen the optical fiber in the CPRI port, all the services carried by the optical fiber are

interrupted.

Procedure

Step 1 Run the DSP CBTSSECTORCARRIERINFO command to query the cell IDs, sector IDs, and

carrier IDs of the RRU3606s connected by the optical fibers to be replaced.

Step 2 Block the carriers.

1. Run the BLK RES command to block all the carriers of the sectors where the optical fibers

to be replaced are configured. It is recommended that you set the value of the priority

parameter to Low.

2. Run the DSP RES command to query whether the carriers are blocked. If they are blocked,

proceed with the next step.

Step 3 Remove the faulty optical fibers.

1. Wear antistatic gloves.

2. Route the new optical fibers to the peer equipment as the faulty optical fibers are routed.

3. Press the protruding part of the connector of each optical fiber, and then remove the

connector from the optical module.

Step 4 Install the new optical fibers.

1. According to the labels on the new optical fibers, insert the new optical fibers into the

optical modules.

2. Bundle the new optical fibers.

Step 5 Unblock the carriers.

Run the UBL RES command to unblock all the carriers of the RRU3606s connected by the

optical fibers.

Step 6 Check that the new optical fibers work properly.

Observe the indicators of optical ports and ensure that the new optical fibers work properly.

Table 1-18 lists the indicators of optical ports.

Table 1-18 Indicators of optical ports

Indicator Color State Description

CPRI_W Red and green Green and ON The CPRI link is functional.

Red and ON An alarm is generated for

receiving by the optical

module (local LOS alarm).

Red, ON for 0.5 second and

OFF for 0.5 second

The CPRI is out of lock.

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Indicator Color State Description

OFF The optical module is not in

position or powered off.

CPRI_E Red and green Green and ON The CPRI link is functional.

Red and ON An alarm is generated for

receiving by the optical

module (local LOS alarm).

Red, ON for 0.5 second and

OFF for 0.5 second

CPRI lock lost

OFF The optical module is not in

position or powered off.

----End

Postrequisite

Keep the faulty optical fibers properly, and then clean up the site.

Replacing the Alarm Cables of the RRU3606

This describes how to replace faulty alarm cables of the RRU3606.

Prerequisite

lGet ready new alarm cables.

lRecord the installation positions of the alarm cables.

lGet ready a cable cutter, an antistatic wrist strap or antistatic gloves, a screwdriver, and

bundling tape.

Procedure

Step 1 Remove the faulty alarm cables.

1. Route the new alarm cables as the faulty alarm cables are routed.

2. Open the cover of the cabling cavity.

3. Remove the alarm cable connectors connected to the RS485 and EXT_ALM ports in the

cabling cavity, and then remove the faulty alarm cables.

Step 2 Route the new alarm cables along the cabling trough in the cabling cavity, and then connect the

alarm cables to the RS485 and EXT_ALM ports.

Step 3 Take waterproofing and sealing measures.

----End

Postrequisite

Keep the faulty power cable properly, and then clean up the site.

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