HUAWEI TECHNOLOGIES CO., LTD.

OptiX RTN 905e Radio Transmission System

V100R010

IDU Quick Installation Guide (Indoor)

Issue: 01

Date: 2017-05-30

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

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

written consent of Huawei Technologies Co., Ltd.

Copyright © Huawei Technologies Co., Ltd. 2017. All rights reserved.

Trademarks and Permissions

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

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

holders.

Notice

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

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

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

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

or representations of any kind, either express or implied.

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

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

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

Before You Start

0

Installation Process

PrecautionsPage 2

Start

Precautions for Handling

the RTN 905e Toggle

Lever SwitchPage 4

Precautions for

Handling RTN 905e IF

Jumpers

Page 5

Introduction to the

IDU 905e EquipmentPage 7

Installing the IDU 905ePages

8 to 13

Optional: Installing the

E1 Panel

Pages

13 to 14

Installing IDU CablesPages

15 to 25

Checking the

InstallationPage 34

End

Installing Power

Cables

Pages

15 to 16

Installing FibersPages

17 to 18

Installing E1 CablesPage 16

Installing IF CablesPage 19

Installing Ethernet

Service CablesPage 18

Installing NMS CablesPage 21

Installing Cascade

Cables and XPIC

Cables

Page 20

Preparing and

Installing External

Alarm Cables

Page 22

Preparing and

Installing External

Clock Cables

Page 24

Preparing and

Installing Synchronous

Data Cables

Page 23

Cable LayoutPage 25

Installing the Chassis

in a 19-Inch CabinetPages

8 to 9

Installing the Chassis

in an ETSI Cabinet

Pages

9 to 10

Wall Mounting

the Chassis

Pages

11 to 12

Desk Mounting

the ChassisPage 13

Installation ToolsPage 6

Precautions for

Handling RTN 905e IF

Cables

Page 5

Precautions for

Handling

Power Cables

Page 3

Installing the Chassis

in a 23-Inch Cabinet

Pages

10 to 11

11

Commissioning Process

Powering On the

EquipmentPage 26

Start

Configuring NE Data

(Using the Web LCT)Page 28

Aligning AntennasPages

29 to 31

Checking the Status of

Radio LinksPage 31

Aligning Single-

Polarized Antennas

Pages

29 to 30

Aligning Dual-

Polarized Antennas

Pages

30 to 31

End

Configuring NE Data

(Using the USB Flash

Drive)

Page 27

Configuring NE Data

(Using the Hand-Held

Tool)

Page 28

2

Precautions

This document provides guidelines for quick hardware installation.

This document does not describe assembly of equipment prior to delivery; it only describes procedures

for onsite installation.

Electrostatic Discharge

To prevent damage to sensitive components caused by electrostatic discharge, wear ESD gloves or an

ESD wrist strap when handling the equipment, boards, or IC chips. Ensure that the ESD wrist strap is

properly grounded.

Binding Cables

Bind fibers or cables inside a cabinet at intervals of not more than 250 mm and user cables at intervals of

not more than 200 mm.

Bind fibers, cables, or corrugated pipes outside a cabinet at intervals equal to the distance between two

horizontal beams. If the cable trough does not have any beams, the intervals should not exceed 250 mm.

Pre-installation Check

Before beginning the installation, check the equipment room, cabinet, power supply, ground cables,

fibers, and associated facilities to confirm that all preparations are complete.

Power Supply

The equipment uses a -48 V/-60 V DC power supply. An AC power supply or a high-voltage power

supply may cause equipment damage or even human injuries and therefore is forbidden.

CAUTION

ESD

OptiX RTN 905

3

Prior to installing power cables on the RTN 905e, confirm that the following conditions are met.

The ground point on the column of the cabinet or the indoor ground bar is properly grounded.

Ensure that the power cable is properly connected to the positive and negative terminals of the power

supply device.Install a circuit breaker on each negative terminal of the power supply device.

The recommended fuse capacity is 16 A. This prevents a power loop from being formed by connecting the

positive terminal of the RTN 905e power cable to the negative terminal of the power supply device

and therefore protects the power cable and power supply device.

The positive terminals of the power supply device connected to the RTN 905e are grounded. If terminals

are not properly grounded, the devices may be damaged.

PSU

PGND

Precautions for Handling Power Cables

SW

SW

DC power port

1

2

3

To the ground point on the column of the cabinet or the indoor ground bar

4

Position and Description of the Toggle Lever Switch

Turning on the switch

Precautions for Handling the RTN 905e Toggle Lever Switch

You must first pull out the toggle lever switch

before turning it.

I: ON

O: OFF

Turning off the switch

1

1

2

2

3

3Pull the switch out gently. Turn the switch. Release the switch.

1

1

2

2

3

3Pull the switch out gently. Turn the switch. Release the switch.

5

Power off the ODU. Install or remove an IF fiber connected to the ODU.

Precautions for Handling RTN 905e IF Jumpers

Power off the ODU before you remove or install an

IF jumper connected to the ODU.

Do not remove or install an IF jumper connected to

the ODU while the ODU is powered on.

Power off the ODU before you remove or

install an IF cable connected to the ODU.

Do not remove or install an IF cable connected to

the ODU while the ODU is powered on.

Power off the ODU. Install or remove an IF cable connected to the ODU.

Precautions for Handling RTN 905e IF Cables

Installation Tools

6

Measuring tape Phillips screwdriver Flat-head screwdriver

Adjustable wrench

Level

Socket wrench Torque wrench Hex key

Wire clippersDiagonal pliersNeedle-nose pliersCombination pliers

Bayonet wrench

Utility knife

Claw hammer

Marker

Ladder

CompassLifting slingPulleyESD gloves

Multimeter PVC tapeFileWaterproof

insulation tape

7

1 Ports

Introduction to the IDU 905e Equipment

Ground screw

DC-C power socket (Caution!

See "Precautions for

Handling Power Cables.")

NE status indicator

1

2

3 Mini USB port

5

IF ports to the ODU/ODU switches

6

Radio link status indicator

7

8

Status indicators of the GE/FE service ports (SFP modules)

9

USB port/Status

indicator

10

11

12NMS port/NMS serial port

NE cascading port/Asynchronous data port

Clock port (CLK)/High-precision

time port (TOD)/Outdoor cabinet

monitoring port (MON)

4

Alarm input/output port

Power over Ethernet

port

GE/FE service ports (SFP modules)

STM-1 service ports16

17

16xE1 ports13

14

15

18

COMBO ports

Port for the ESD wrist strap19

MN1 subboard

FE/GE service electrical ports (RJ-45 connectors)20

1

2

3

4

5

6

7

8

9

10

11 13 16

12

14 15 17 1918

20

8

1Installing the Chassis in a 19-Inch Cabinet

Mounting hole

Keep the ground screw for installing the protection ground (PGND) cable.

When you fix the floating nuts, ensure a space of at least 25 mm for heat dissipation on the left and right sides of the IDU 905e.

Floating nut

Fix the floating nuts.a

Remove the ground screw.b

Installing the IDU 905e

9

Install the chassis in the cabinet.c Install the PGND cable.d

Secure the PGND cable with the ground screw.

Install the mounting ears.a b

2Installing the Chassis in an ETSI Cabinet

Fix the floating nuts.

Mounting earWhen you fix the floating nuts, ensure a space of at least 25 mm for heat dissipation on the left and right sides of the IDU 905e.

2.0±0.2 N·M

M6

3.0±0.3 N·M

M6

1.4±0.14 N·M

M4

Floating nut

Mounting hole

To a ground point on the cabinet column or to the indoor ground bar

Before installing the chassis in an ETSI cabinet, adjust

the holes for installing mounting ears based on the type

of cabinet.

Mounting ear

10

d Install the PGND cable.c Install the chassis in the cabinet.

Secure the PGND cable with the ground screw.

3Installing the Chassis in a 23-Inch Cabinet

1.4±0.14 N·M

M4

2.0±0.2 N·M

M6

To a ground point on the cabinet column or to the indoor ground bar

23-Inch Mounting ear

23-Inch Mounting ear

1.4±0.14 N·M

M6

Remove the mounting ears.a Install the mounting ears.b

Store the removed screws properly for installing 23-

inch mounting ears.

NOTE

11

Remove the mounting ears.a Install the mounting ears.b

4Wall Mounting the Chassis

Rotate the mounting ears 90 degrees and install them as shown in this figure.

d Install the PGND cable.c Install the chassis in the cabinet.

Secure the PGND cable with the ground screw.

1.4±0.14 N·M

M4

To a ground point on the cabinet column or to the indoor ground bar

2.0±0.2 N·M

M6

12

8

Drilling positions

Drill holes in the wall.c

Wall-mount the chassis.d Install the PGND cable.e

PGND cable

M6x60 expansion

bolt

Drill Ф8 holes 52 to

60 mm deep.

Nut Small flat

washer

Large flat

washer

Secure the PGND cable with the ground screw.

≥300 mm

Hold the chassis against the wall and mark the drilling positions. Drill holes and insert bolts into the holes. Ensure a space of at least 50 mm for heat dissipation above and below the IDU.

1.4±0.14 N·M

M4

Fans dissipate

heat above

the chassis.

13

Install the base plates.a Install the PGND cable.b

4Desk Mounting the Chassis

Do not place any objects that may impede heat dissipation next to the chassis.

PGND cable

Secure the PGND cable with the ground screw.

Base plate

1Fix the floating nuts.

Optional: Installing the E1 Panel

Remove the mounting ears and install the base plates.

1.4±0.14 N·M

M4

Floating nut

Mounting hole

14

2Secure the E1 Panel.

3Install the PGND cable for the E1 panel.

To a ground point on the cabinet column or to the indoor ground bar

15

1Install power cables.

Insert the power cables into the DC connector based on the pin assignment. You do not need to prepare the power cables on site if they were prepared before delivery.

After fastening a cable, check whether the cable core is exposed outside the power cable connector terminal. If the cable core is exposed, re-route the cable into the power cable connector. If the cable core is still exposed after you re-route the cable, peel the cable again.

NEG2(-)

INPUT

RTN2(+)RTN1(+) NEG1(-)

ON

OFF20A32A 32A 20A

ON

OFF

1 2 3 4 1 2 3 4

20A32A 32A 20A

OUTPUT OUTPUTA B

Check the fuse capacity of the external power supply. Check the voltage and polarity of the external power supply.

Recommended Fuse Capacity

RTN 905e: 16A

Rated Voltage of Input

Power

Allowable Voltage Range

–48 V ( DC ) –38.4 V to –57.6 V ( DC )

–60 V ( DC ) –48 V to –72 V ( DC )

RTN(+) NEG(-)

The recommended fuse capacity is sufficient even at the maximum power consumption level. Users can calculate fuse capacity by applying this formula: Fuse capacity ≥ (Total power consumption x 1.5)/(Rated voltage of input power x 87.5%).

Installing IDU Cables

If the AC power box (ETP 4830) is used, the IDU needs to use the BGND power cable and -48 V power cable that are

delivered with the AC power box. For details on the AC power box and its cables, see the RTN 905e IDU hardware

description.

1

0.22±0.03 N·M

M2

1

2 3

See appendix "Connecting Cables to a Power Cable Connector."

WARNING

The IDU does not support AC power. Do not connect

the IDU to an AC power supply. Otherwise, equipment

may be damaged and you may be injured.

16

Confirm that the circuit breaker of the PDU is switched to the off position. Insert the DC connector into the power port on the chassis. Confirm that the two groups of power cables are connected to different power modules. Secure the DC connector with bolts.

aOptional: Install E1 cables connected to an E1 panel.b

2Install E1 cables.

For information about the wire sequence of E1 cables, see the pin assignment information delivered with these E1 cables or the cable section in the RTN 905e IDU Hardware Description.

When assembling the DDF-side connector for a 1.6 mm diameter E1 cable, use a type 75-1-1 connector and a pair of 2.5 mm or 1.7 mm crimping tool.

0.4±0.03 N·M

M2.5

0.4-0.5 N·M

M2.5

Optional: Install E1 cables connected to another device.

To another device

If an external power box is used, cut off the input of the power box

before you connect power cables.

CAUTION

17

3Install fibers.

Precautionsa

Always wear protective glasses or goggles when you look directly at an optical port. (Figure 1)

Coil fibers from other sites on the ODF and connect them to the local cabinet. Do not coil the fibers from

other equipment rooms inside the local cabinet.

Fiber cap

Swappable optical moduleDustproof cap

10 cm

Avoid damage to fiber connectors when you lay fibers.

After fibers are installed, insert dustproof caps into unused optical ports and plug fiber caps on unused

fibers. (Figure 2)

Tape over the cuts of a closed corrugated pipe before threading fibers through it. Tape over the cuts of an open

corrugated pipe after threading fibers through it.

After you thread fibers through a corrugated pipe, wrap tape around the cut of the pipe (Figure 3).

Do not thread too many fibers through one pipe. If 2 mm-diameter fibers are used, threading no more than 60

fibers through an open corrugated pipe and no more than 20 fibers through a closed corrugated pipe is

recommended. The pipe section secured inside a cabinet should be about 10 cm in length (Figure 4).

Figure 1 Figure 2

Figure 3 Figure 4

Short-jacketed fiber

18

Install fibers.b

GE5

GE6

OUT

IN

4Install Ethernet service cables.

Install Ethernet service cables.a

To an Ethernet device

Ethernet ports on the RTN 905e support the MDI/MDI-X adaptation function. Either crossover or straight-through network cables can be used to connect the Ethernet ports. Straight-through cables are recommended.

GE1GE3

19

5Install IF cables.

Install IF jumpers.a

Connect IF jumpers and IF cables.b

Power off the ODU before you install IF jumpers.

If RG-8U or 1/2-inch IF cables are used, use IF jumpers to connect IF cables and the IDU. If 5D IF cables are used, connect IF cables directly to the IDU.

N type (5/8"), 0.8 to 1.1 N/M

Test the connectivity of the IF cable when you connect a cable to an IF jumper.Connect an IF jumper and an IF cable based on engineering design documents and the network plan.

IF jumperIF cable

OFF

OFF

20a

6 a. Installing 1+1/TDM Cascade Cables and XPIC Cables

Installing 1+1/TDM cascade cables

Installing XPIC cables

The X-IN port on an RTN 905e must be connected to the X-OUT port on another RTN 905e.

Note

If the XPIC function is disabled on an RTN 905e, do not use an XPIC cable to connect the X-IN and X-OUT ports

on the RTN 905e. Otherwise, the RTN 905e performance will be affected.

Caution

1+1/TDMA

TDMB

RTN 905e

RTN 905e

RTN 905e

1+1/TDMARTN 905e

RTN 905e

1+1/TDMA

X-INX-OUT

X-IN X-OUT

20b

6 b. Installing COMBO/XPIC Cables

Installing COMBO cables

Installing XPIC cables

The X-IN port of an RTN 905e must be connected to the X-OUT port of another RTN 905e.

NOTE

Do not use an XPIC cable to connect the X-IN and X-OUT ports on an RTN 905e where XPIC is disabled.

Otherwise, the performance of the RTN 905e will be affected.

Caution

• The first cascading port is a versatile cascading port.

• The second cascading port is a TDM/CES cascading port.

COMBO-1RTN 905e

RTN 905e

COMBO-1

RTN 905e

RTN 905e

COMBO-1

X-IN X-OUT

X-IN X-OUT

COMBO-1

21

7Installing NMS Cables

Install an NMS cable on a gateway NE.a

NMS/COM

NMS

Install NMS cables on multiple NEs at one site.b

NMS

Assemble crossover network cables or straight-through network cables on site.

Avoid forming any loops when installing network cables.

Use NMS cascading cables only for NEs that do not communicate service data.

NMS/COM

EXT/S1

22

8Preparing and Installing External Alarm Cables

Make an external alarm cable based on pin assignments.a

Install an external alarm cable.b

16 mm

Pin 1

Pin 8

Pin Assignments for External Alarm Cables

Pin Color Relationship Function

1

2

3

6

4

5

7

8

White/Orange

Orange

White/Green

Green

Blue

White/Blue

White/Brown

Brown

Twisted pair

Twisted pair

Twisted pair

Twisted pair

First alarm signal input

Ground of first alarm signal input

Second alarm signal input

Ground of second alarm signal input

Third alarm signal input

Ground of third alarm signal input

Positive of first alarm signal output

ALMI/ALMO

Negative of first alarm signal output

Pin 1

Pin 8

23

9Preparing and Installing Asynchronous Data Cables

Make an asynchronous data cable according to the pin assignment.a

Install asynchronous data cables on the RTN 905e.b

To a asynchronous data communication device

16 mm

Pin 1

Pin 8

EXT/S1

Positive for transmitting data by the NMS cascading port

Pin assignments for Asynchronous Data Cables

Pin Color Function

White/Orange

Orange

White/Green

Green

Blue

White/Blue

White/Brown

Brown

1

2

3

6

4

5

7

8

Negative for transmitting data by the NMS cascading port

Positive for receiving data by the NMS cascading port

Negative for receiving data by the NMS cascading port

Ground for the 19.2 kbit/s asynchronous data port

Reserved

Receiving data by the 19.2 kbit/s asynchronous data port

Transmitting data by the 19.2 kbit/s asynchronous data port

Twisted pair

Twisted pair

Twisted pair

Twisted pair

Relationship

Pin 1

Pin 8

24

10Preparing and Installing External Clock Cables

Make an external clock cable based on pin assignments.a

Install external clock cables.b

CLK/TOD/MON

Pin assignments for External Clock Cables

Pin Color Relationship External ClockExternal Time Input

(1PPS+Time Information)

External Time Output

(1PPS+Time Information)

External Time Input

(DCLS)

External Time Output

(DCLS)

1 White/

Orange Twisted pair

Negative for receiving

external clock signalsReserved

2 OrangePositive for receiving

external clock signals

3White/

Green

Twisted pair

ReservedNegative for 1PPS signal

input (RS422 level)

Negative for 1PPS signal

input (RS422 level)

Negative for DCLS

signal input (RS422

level)

Negative for DCLS signal

output (RS422 level)

6 Green ReservedPositive for 1PPS signal

RS422 input/output

Positive for DCLS signal

RS422 input/output

Positive for DCLS signal

input (RS422 level)

Positive for DCLS signal

output (RS422 level)

4 Blue

Twisted pair

Negative for

transmitting external

clock signalsGround

5 White/BluePositive for transmitting

external clock signals

7 White/Brown

Twisted pair

ReservedNegative for time signal

input (RS422 level)

Negative for time signal

output (RS422 level)

Reserved

8 Brown ReservedPositive for time signal

RS422 input/output

Positive for time signal output

(RS422 level)

16 mm

Pin 1

Pin 8

Pin 1

Pin 8

25

Cable connectionsa

11Cable Layout

Cable Layoutb

Asynchronous data cable

External clock cable

5

NMS cable

6

4

Power cables

IF jumper

1

2

3

PGND cable 7

8

External alarm cable

9

Ethernet service cables

Ethernet service fibers

10

11

TDM service concatenation cables

E1 cables

1

23

4

5

6

78

9

10

11

26

Powering On the Equipment

Before powering on the equipment, ensure that

• The installation of the ODU, IF jumpers, and IF cables is complete.

• You are familiar with the precautions for handling power cables.

• The ODU power switches are turned off.

Under normal conditions, STAT, PWRA, and PWRB indicators are on (green). For description of indicator states, see the RTN 905e IDU Hardware Description.

27

Configuring NE Data (Using the USB Flash Drive)

The USB flash drive loads software, system parameters, and scripts for commissioning a newly deployed site.

Insert a USB flash drive.

For the functions, working principles, and types of USB flash drives supported, see the RTN 905e IDU Hardware Description.

For a description of the indicators on the USB flash drive, see the RTN 905e Commissioning Guide.

Normally, after data is loaded from the USB flash drive to the OptiX RTN 905, the USB port status indicator should be

on (green).

USB port status indicator

NMS/COM

NMS

NMS/COM

手持终端

28

Configuring NE Data (Using the Web LCT)

Configuring NE Data (Using the Hand-Held Tool)

Connect the NMS/COM port to a hand-held tool.

You can use the Web LCT to configure NE data, including basic NE data, IF/ODU information for the radio links, and parameters for IF and ODU ports.

You can use the hand-held tool to configure NE data, including basic NE data, IF/ODU information for the

radio link, parameters for IF and ODU ports, and DCN parameters.

Connect the NMS/COM port to the PC where the Web LCT is running.

29

Aligning Antennas

1Aligning Single-Polarized Antennas

Use the installation positions and heights of local and remote antennas to determine their azimuths. Adjust the pitch angles of the antennas to the horizontal position.

Connect a multimeter to the received signal strength indicator (RSSI) port on the ODU at the local end and measure the voltage value VBNC.

Level adjustment screw

Elevation adjustment screw

The red line of the multimeter is connected to the core of the RSSI port, and the black line is connected to the ground pin.

a

b

c

Secure the remote antenna and loosen/tighten the level adjustment screw to turn antenna widely in the horizontal direction.

If three signal peaks are tracked, adjust the azimuth of the antenna until the received signal level (RSL) reaches the peak value at position 2.

If two signal peaks are tracked, adjust the azimuth of the antenna until the RSL reaches the middle of positions 4 and 5. Then, adjust the pitch angle of the antenna using the elevation adjustment screw until the three signal peaks on the line AA' appear. Finally, adjust the azimuth of the antenna until the RSL reaches the peak value at position 2.

If one signal peak is tracked, adjust the azimuth of the antenna until the RSL reaches the middle of positions 6 and 7. Then, adjust the pitch angle of the antenna using the elevation adjustment screw until the three signal peaks on the line AA' appear. Finally, adjust the azimuth of the antenna until the RSL reaches the peak value at position 2.

30

各路径信号值

31

2

B

7

4 5

6

A

B'

A'

C'C

A'A

B B'

C C'

天线不同仰角下扫描路径的正面图

2

4

6 7

1 3

5

Front view of the tracking lines at different

elevation angles for the antenna

RSL values of each line

2Aligning Dual-Polarized Antennas

Power off the vertically-polarized ODUs and power

on the horizontally-polarized ODUs at both ends of

a radio link. This ensures that the antennas at both

ends transmit horizontally polarized signals.

Adjust the azimuth and pitch angle of the antennas

at both ends by referring to the description in

"Aligning Single-Polarized Antennas." Ensure that

the main lobes of the horizontally-polarized signals

are aligned.

Loosen/Tighten the elevation adjustment screw to turn the local antenna vertically. Adjust the pitch angle until the RSL reaches the peak within the tracked range.

Repeat Steps 3 to 4 to ensure that three signal peaks are tracked both horizontally and vertically. When the local RSL reaches the maximum peak value, secure the local antenna.

Adjust the remote antenna to ensure that the RSL at the local end and the RSL at the remote end reach the peak value. Check that the ODU indicator on the IF board is off. If the ODU indicator on the IF board is yellow and blinks every 300 ms, continue aligning the antennas.

Tighten all the screws on the antennas after the alignment is completed.

If an OMT is used to connect the ODUs to the antenna in direct mount mode, the alignment procedure for these

antennas is the same as that for single-polarized antennas. If soft waveguides are used to connect the ODUs to

the antenna in separate mount mode, follow the procedure below to align the antennas.

31

LINK indicator

Checking the Status of Radio Links

Use a multimeter to measure the RSL (P1) on the RSSI port of the horizontally-polarized ODU at the local end.

Power on the vertically-polarized ODU at the local end. Use a multimeter to measure the RSL on the RSSI port of

the vertically-polarized ODU. Release the holders of the feed boom and turn the feed boom gently until the RSL

reaches the minimum value (P2). The calculated XPD1 (XPD1 = P1 - P2) cannot be lower than 24 dB. Record the

current angle (D1) of the feed boom.

Power off the horizontally-polarized ODUs and power on the vertically-polarized ODUs at both ends of the radio

link. Adjust the azimuth and pitch angle of the antennas by referring to the description in "Aligning Single-

Polarized Antennas". Ensure that the main lobes of the vertically-polarized signals are aligned.

Refer to Steps 3 and 4 to ensure that the calculated XPD2 (XPD2 = P3 - P4) is higher than or equal to 24 dB.

Record the current angle (D2) of the feed boom.

Repeat Steps 1 to 6 to gently adjust the feed boom (ranging from D1 to D2), and ensure that XPD1 and XPD2 are

higher than or equal to 24 dB.

Tighten all the screws on the antennas after the alignment is completed.

Check the status of the LINK indicator on the front panel of the chassis.

If the LINK indicator is on (green), the radio link is functioning properly.

If the LINK indicator is on (red), check whether the configuration data is correct. If the configuration data is

incorrect, configure correct data.

If the LINK indicator blinks yellow at intervals of 300 ms, check whether the antennas are aligned properly. If the

antennas are not aligned properly, realign the antennas.

If the LINK indicator is off, check whether the logical units of the IF unit and the ODU have been added on the

NMS. If yes, check for a fault in the IF jumper, IF cable, or the ODU.

3

4

5

6

7

8

a

b

c

d

32

Checking the Installation

No. What to Check For

1 The chassis is installed securely in the position specified in the engineering design documents. If the cabinet

door is closed, the door should not press against the chassis or any cables.

2 Chassis components have no paint spatters, damage, or stains.

Re-paint or clean components, as required.

3 Cable routes comply with the engineering design documents and facilitate maintenance and expansion.

4 Cables are not damaged, broken, or spliced together.

5 Cable cores have been tested for connectivity.

6 Cables are properly bound. Cable ties are installed at equal intervals and face in the same direction. Cable ties

have been trimmed after tying and there are no rough edges.

7 Signal cables are routed correctly in the cabinet.

8 Cables outside the cabinet are routed as follows:

•Cables are run neatly and are not cross-connected.

•If a cable ladder is used, the cables are bound onto the ladder beam neatly. If the cable tray extends 0.8 m or

more above the cabinet top, a cable ladder is installed to support the cables and ease stress.

9 Cable turns are smooth and have a large bending radius.

10 Cable labels are filled in correctly, attached securely, and are aligned to face in the same direction. Preferably,

labels are attached at least 2 cm away from connectors.

11 The power cable and ground cable are routed separately from signal cables.

12 Unused cable connectors are protected. For example, protective caps are installed on unused connectors.

13 Cable connectors are inserted securely and the screws on the connectors are tightened.

14 Corrugated pipes for fiber jumpers are inserted 10 cm into the cabinet and bound securely.

15 The cuts for jumpers on corrugated pipes are either smooth or have been wrapped with insulation tape.

16 Jumpers are bound gently to ensure free move in cable ties.

17 Connecting points of fiber jumpers are clean. Protective caps (plugs) are installed on unused fiber connectors

and optical ports.

19 The positive terminals of the power supply device connected to the RTN 905e are properly grounded.

20 The ground point on the column of the cabinet or the indoor ground bar is properly grounded.

Connecting Cables to a Power Cable Connector

Obtaining Tools, Cables, and a Power Cable Connector1

33

Appendix

Ruler Diagonal pliers Utility knife Flat-head screwdriver

Two 0 V black ground cables

Two -48 V blue power cables

Power cable connector

Peeling Cables2

Use one side of the power cable connector as the peeling length reference plane.

1

Peeling length reference plane (9 mm)

Use a pair of diagonal pliers to trim off one end of a -48 V power cable. Place the cable on the peeling length reference plane, and leave a 1 mm space between the left edge of the reference plane and the trimmed end of the cable. Use a utility knife to make a mark on the cable that is aligned with the right edge of the reference plane.

2

9 mm

8 mm

Peeling length (8 mm)

1 mm

8 mm

3 Peel the cable using the diagonal pliers.

8 mm

Cable core

4 Repeat steps 1-3 to peel a 0 V ground cable.

Note

If a ruler is available, you can use the ruler to measure an 8 mm peeling length after trimming off one end of a cable.

8 mm

Cable core

Peeling length reference plane

Connecting Cables to a Power Cable Connector

Connecting Cables to the Power Cable Connector3

34

Appendix

Route a cable into the power cable connector.

1

Power Cable Connector Terminal

Cable

1- -48 V power cable (blue)

1+ 0 V ground cable (black)

2- -48 V power cable (blue)

2+ 0 V ground cable (black)

Fasten the cable.2 Pull the cable slightly. If the cable is loose, fasten it again.

3

After fastening a cable, check whether the cable core is exposed outside the power cable connector terminal. If the cable core is exposed, re-route the cable into the power cable connector. If the cable core is still exposed after you re-route the cable, peel the cable again.

After the power switch is turned on, sparks may be generated at the exposed cable core when an inappropriate operation is performed.

Caution

Pull the cable slightly.

Repeat steps 1-3 to connect all cables to the power cable connector.

4

All the cables are fastened, and no cable core is exposed outside the power cable connector.

Installing the MN1 Subboard

35

Appendix

Remove the filler panel from

the slot for the MN1 subboard.

1

Install the MN1 subboard.2

Screw the MN1 subboard.3

HUAWEI TECHNOLOGIES CO., LTD.Huawei Industrial Base Bantian Longgang

Shenzhen 518129

People’s Republic of China

www.huawei.com