Huawei Technologies AP8130DN Outdoor Wireless LAN Access Point User Manual Hardware Installation and Maintenance Guide

Huawei Technologies Co.,Ltd Outdoor Wireless LAN Access Point Hardware Installation and Maintenance Guide

Users Manual

Huawei AP8030DN & AP8130DN

Hardware Installation and

Maintenance Guide

Issue 03

Date 2015-05-18

HUAWEI TECHNOLOGIES CO., LTD.

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

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

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

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

Notice

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

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

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

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

of any kind, either express or implied.

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

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

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

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://enterprise.huawei.com

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About This Document

Intended Audience

This document describes hardware features of the AP8030DN and AP8130DN and provides

basic installation methods.

This document is intended for:

lNetwork planning engineers

lHardware installation engineers

lCommissioning engineers

lOnsite maintenance engineers

lSystem maintenance engineers

Symbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation

which, if not avoided, will result in death or

serious injury.

Indicates a potentially hazardous situation

which, if not avoided, could result in death or

serious injury.

Indicates a potentially hazardous situation

which, if not avoided, may result in minor or

moderate injury.

Indicates a potentially hazardous situation

which, if not avoided, could result in

equipment damage, data loss, performance

deterioration, or unanticipated results.

NOTICE is used to address practices not

related to personal injury.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide About This Document

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Symbol Description

NOTE

Calls attention to important information, best

practices and tips.

NOTE is used to address information not

related to personal injury, equipment damage,

and environment deterioration.

Change History

Changes between document issues are cumulative. The latest document issue contains all

changes made in previous issues.

Issue 03 (2015-05-18)

This version has the following updates:

The following information is modified:

lUpdated the mounting bracket.

lOptimized the cabling diagram.

lAdded the command to check AP running status in V200R006C00.

lAdded descriptions about PoE fault troubleshooting.

Issue 02 (2014-12-05)

This version has the following updates:

The following information is modified:

lInstallation of the angle adjusting component with AP8030DN is added.

The following information is added:

l1.4 Ordering Information.

Issue 01 (2014-08-20)

Initial commercial release

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide About This Document

Issue 03 (2015-05-18) Huawei Proprietary and Confidential

iii

Contents

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

1 AP8130DN & AP8030DN Overview..........................................................................................1

1.1 Device Structure.............................................................................................................................................................2

1.2 Indicator Description......................................................................................................................................................4

1.3 Basic Specifications........................................................................................................................................................7

1.4 Ordering Information......................................................................................................................................................8

2 AP Installation.............................................................................................................................10

2.1 Preparing for Installation..............................................................................................................................................11

2.2 Installation Flowchart...................................................................................................................................................12

2.3 Unpacking the Equipment............................................................................................................................................13

2.4 Determining the Installation Position...........................................................................................................................14

2.5 Installing the AP...........................................................................................................................................................16

2.5.1 Wall Mounting...........................................................................................................................................................16

2.5.2 Pole Mounting...........................................................................................................................................................23

2.6 Connecting Cables........................................................................................................................................................28

2.6.1 Connecting RF Cables...............................................................................................................................................28

2.6.2 Connecting Optical Fibers and Network Cables.......................................................................................................30

2.6.3 Connecting Ground Cables........................................................................................................................................33

2.6.4 Installing Outdoor Antennas......................................................................................................................................36

2.7 Installing the Security Lock..........................................................................................................................................39

2.8 Checking the AP After Installation..............................................................................................................................40

2.9 Powering on the AP......................................................................................................................................................40

3 Logging In to the AP...................................................................................................................41

3.1 Logging In to the AP Through the Console Port..........................................................................................................42

3.2 Logging In to the AP Using STelnet............................................................................................................................42

3.3 Logging In to the AP Using Telnet..............................................................................................................................43

3.4 Logging In to the AP Using a Web Client....................................................................................................................44

4 Hardware Failures.......................................................................................................................46

4.1 An device Fails to Be Powered On...............................................................................................................................47

4.2 An Optical Interface Cannot Turn Up..........................................................................................................................47

5 Appendix.......................................................................................................................................49

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide Contents

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5.1 On-site Cable Assembly and Installation.....................................................................................................................50

5.1.1 Cable Assembly Precautions.....................................................................................................................................50

5.1.2 Assembling Power Cables.........................................................................................................................................51

5.1.3 Assembling Ethernet Cables......................................................................................................................................59

5.1.4 Installing Cable Accessories......................................................................................................................................73

5.1.5 Replacing the Mold of the Crimping Pliers...............................................................................................................89

5.2 Environmental Requirements for Device Operation....................................................................................................92

5.2.1 Environmental Requirements for an Equipment Room............................................................................................92

5.2.2 Requirements for Power Supply..............................................................................................................................100

5.3 Equipment Grounding Specifications.........................................................................................................................103

5.3.1 General Grounding Specifications...........................................................................................................................103

5.3.2 Grounding Specifications for an Equipment Room................................................................................................103

5.3.3 Grounding Specifications for Devices.....................................................................................................................103

5.3.4 Grounding Specifications for Communications Power Supply...............................................................................104

5.3.5 Grounding Specifications for Signal Cables...........................................................................................................105

5.3.6 Specifications for Laying Out Grounding Cables...................................................................................................105

5.4 Engineering Labels for Cables...................................................................................................................................106

5.4.1 Introduction to Labels..............................................................................................................................................106

5.4.2 Engineering Labels for Optical Fibers.....................................................................................................................114

5.4.3 Engineering Labels for Network Cables.................................................................................................................117

5.4.4 Engineering Labels for User Cables........................................................................................................................118

5.4.5 Engineering Labels for Power Cables.....................................................................................................................119

5.5 Guide to Using Optical Modules................................................................................................................................122

5.6 Fault Tag.....................................................................................................................................................................125

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide Contents

Issue 03 (2015-05-18) Huawei Proprietary and Confidential

1 AP8130DN & AP8030DN Overview

About This Chapter

Huawei AP8030DN and AP8130DN is the latest-generation 802.11ac outdoor access point (AP)

that supports 3x3 MIMO. The AP is physically hardened and features enhanced outdoor

coverage performance. It supports 2.4 GHz and 5 GHz frequency bands, complies with IEEE

802.11a/b/g/n/ac, and can work as wireless bridges. The AP can provide services simultaneously

on the 2.4 GHz and 5 GHz frequency bands to support more access users. It provides

comprehensive service support capabilities and features high reliability, high security, simple

network deployment, automatic AC discovery and configuration, and real-time management

and maintenance, which meets requirements of outdoor deployment.

Huawei AP8030DNs and AP8130DNs comply with IP67 dustproof and waterproof protection

standards, applicable to coverage scenarios (for example, squares, pedestrian streets, and

amusement parks) and bridging scenarios (for example, wireless harbors, data backhaul, video

surveillance, and train-to-ground backhaul).

1.1 Device Structure

1.2 Indicator Description

1.3 Basic Specifications

1.4 Ordering Information

To place an order, contact the Huawei local office.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 1 AP8130DN & AP8030DN Overview

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1.1 Device Structure

Figure 1-1 and Figure 1-2 shows the appearance of the AP8030DN and AP8130DN.

Figure 1-1 AP8030DN appearance

GE0/PoE GE1 SFP

SYS

Link/ACT1

Wireless1

Link/ACT0

Wireless0

Link/ACT2

1 3

Console

Default

678

Figure 1-2 AP8130DN appearance

GE0/PoE

GE1

SFP

SYS

2.4G/5G

Link/ACT1

Wireless1

Link/ACT0

Wireless0

Link/ACT2

1 3

4 5

10 9 10

2.4G/5G

2.4G/5G 5G 5G

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Console

Default

678

Table 1-1 describes interfaces on the AP8030DN and AP8130DN.

Table 1-1 Descriptions of interfaces

No. Name Description

1GE0/PoE 10/100/1000M bit/s interface: connects to the

wired Ethernet. The interface can connect to

a PoE power supply to provide power for the

AP.

2 GE1 10/100/1000M bit/s interface: connects to the

wired Ethernet. The interface can't connect to

a PoE power supply to provide power for the

AP.

3 SFP Connects an optical fiber to the AP. An

optical module must be installed first.

4 5G antenna interface Connects a 2.4GHz antenna to the AP to send

and receive service signals.

5 2.4G or 5G antenna

interface

Connects a 2.4GHz or 5GHz antenna to the

AP to send and receive service signals.

6 Console Console: Console interface

7 Default Reset button: restores factory settings and

restarts the AP if you hold down the Reset

button for more than 3 seconds.

NOTE

The Reset button is protected by a waterproof

screw. Before pressing the Reset button, remove

the waterproof screw. Keep the screw properly and

install it again after pressing the Reset button.

8 Security slot Connects to a security lock.

9 Device ground screw Connects a ground cable to the AP.

10 Ground screw for the

surge protective

device

Connects the AP to the ground point of an

external surge protective device.

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NOTE

The AP8130DN offers two internal DB9 ports, which have similar functions as external GE ports. In device

usage, you are advised to connect the device through the GE ports but not the DB9 ports.

CAUTION

There is a scald warning label attached on the device, warning you not to touch the device after

the device has been operating for a long time.

1.2 Indicator Description

The AP8030DN and AP8130DN provides multiple indicators: SYS indicator, Link/ACT

indicator, and Wireless indicator. The following tables describe indicators on the AP8030DN

and AP8130DN.

NOTE

lIndicator colors may vary slightly at different temperature.

lAfter a Fit AP is powered on, you can run the led off command on the AC to turn off all AP indicators.

To restore the indicators to normal working status, run the led on command. Indicators on a Fat AP

cannot be turned off using the led off command.

GE1

SYS

Link/A CT1

Wire less1

Link/A CT0

Wire less0

Link/A CT2

SYS indicator

Table 1-2 Descriptions about the SYS indicator

Type Color Status Description

Default

status after

power-on

Green Steady on The AP is just powered on and the software is not

started yet.

Software

startup

status

Green Steady on

after

blinking

once

After the system is reset and starts uploading the

software, the indicator blinks green once. Until the

software is uploaded and started, the indicator

remains steady green.

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Type Color Status Description

Running

status

Green Blinking

once every

2s (0.5 Hz)

lThe system is running properly, the Ethernet

connection is normal, and STAs are associated

with the AP.

lThe system enters the Uboot CLI.

Blinking

once every

5s (0.2 Hz)

The system is running properly, the Ethernet

connection is normal, and no STA is associated with

the AP. The system is in low power consumption

state.

Alarm Green Blinking

once every

0.25s (4

Hz)

lThe software is being upgraded.

lAfter the software is uploaded and started, the AP

working in Fit AP mode requests to go online on

the AC and maintains this state until it goes

online successfully on the AC (before the

CAPWAP link is established).

lThe AP working in Fit AP mode fails to go online

on the AC (the CAPWAP link disconnects).

Fault Red Steady on A fault that affects services has occurred, such as a

DRAM detection failure or system software loading

failure. The fault cannot be automatically rectified

and must be rectified manually.

Link/ACT indicators

Link/ACT indicators consist of Link/ACT0, Link/ACT1, and Link/ACT2, showing link status

of interfaces GE0/PoE, GE1, SFP respectively.

Table 1-3 Descriptions about the Link/ACT indicators

Type Color Status Description

LINK Green Steady on The system is running properly, the Ethernet

connection is normal, and no data is being

transmitted.

ACT Green Blinking The system is running properly, the Ethernet

connection is normal, and the AP is transmitting

data. The indicator blinks more quickly when more

data is being transmitted.

Wireless indicators

Wireless indicators consist of Wireless0 and Wireless1, showing wireless link status of the 5

GHz and 2.4/5 GHz radio interfaces respectively.

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Table 1-4 Traffic volume indicator

Color Status Description

Yellow/green Off Radios are disabled, and no STA is connected

to the AP.

Yellow/green Steady on The AP has STAs connected to the 2.4 GHz

radio or 5 GHz radio, but no data is being

transmitted.

Green Blinking The AP has STAs connected to the 2.4 GHz

radio and is transmitting data. The indicator

blinks more quickly when more data is being

transmitted.

Yellow Blinking The AP has STAs connected to the 5 GHz

radio and is transmitting data. The indicator

blinks more quickly when more data is being

transmitted.

Yellow/green Blinking

alternatively

The AP has STAs connected to both the 2.4

GHz radio and 5 GHz radio. The indicator

blinks more quickly when more data is being

transmitted.

Table 1-5 Wireless bridge indicator

Color Status Description

Yellow/green Off The AP is not transmitting or receiving data

or the signal strength is extremely low.

Blinking once every

2s (0.5 Hz)

The AP is transmitting or receiving data

normally, and the signal strength is low.

Blinking green once

every 0.25 seconds (4

Hz)

The AP is transmitting or receiving data

normally, and the signal strength is medium.

Steady on The AP is transmitting or receiving data

normally, and the signal strength is high.

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NOTE

When the WDS/mesh function is enabled on an AP, the blinking frequency of its Wireless LED indicates

the receive signal strength on the WDS/mesh connection by default. After you connect an AP to a WDS/

mesh network, you can run the wifi-light { signal-strength | traffic } command on the AC to make the

Wireless LED blinking frequency indicate receive signal strength or service traffic rate.

lwifi-light signal-strength:

lIf the mesh function is enabled on the AP, the blinking frequency of the Wireless LED reflects

the weakest signal strength of all neighboring APs.

lIf WDS is enabled on an AP, the blinking frequency of the Wireless LED reflects the strength

of signals received from a WDS AP.

lIf the AP works in leaf mode, the blinking frequency of the Wireless LED reflects the strength

of signals received from a middle AP.

lIf the AP works in middle mode, the blinking frequency of the Wireless LED reflects the

strength of signals received from a root AP.

lIf the AP works in root mode, the blinking frequency of the Wireless LED reflects the weakest

signal strength of middle APs.

lwifi-light traffic: allows the Wireless LED to reflect the service traffic volume on the radio.

The Fat AP does not support WDS/Mesh functions; therefore, the Wireless indicator of the Fat AP does

not indicate the signal strength.

1.3 Basic Specifications

Table 1-6 and Table 1-7 provides basic specifications of the AP8030DN and AP8130DN.

Table 1-6 Basic Specifications of the AP8030DN

Item Description

Technical

specifications

Dimensions (H x W x

100 mm x 290 mm x 260 mm

Weight 3.6 kg

System memory l256 MB DDR3

l64 MB Flash

Power specifications Power input PoE power supply: -48 V DC (in compliance

with IEEE 802.3at)

Maximum power

consumption

20.1 W

NOTE

The actual maximum power consumption depends

on local laws and regulations.

Environment

specifications

Operating

temperature

-60 m to +1800 m: -40°C to +60°C

1800 m to 5000 m: Temperature decreases by

1°C every time the altitude increases 220 m.

Storage temperature -40°C to +70°C

Operating humidity 0% to 100% (non-condensing)

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Item Description

IP rating IP67

Atmospheric

pressure

53 kPa to 106 kPa

Table 1-7 Basic Specifications of the AP8130DN

Item Description

Technical

specifications

Dimensions (H x W x

100 mm x 290 mm x 260 mm

Weight 4.0 kg

System memory l256 MB DDR3

l64 MB Flash

Power specifications Power input PoE power supply: -48 V DC (in compliance

with IEEE 802.3at)

Maximum power

consumption

22.4 W

NOTE

The actual maximum power consumption depends

on local laws and regulations.

Environment

specifications

Operating

temperature

-60 m to +1800 m: -40°C to +60°C

1800 m to 5000 m: Temperature decreases by

1°C every time the altitude increases 220 m.

Storage temperature -40°C to +70°C

Operating humidity 0% to 100% (non-condensing)

IP rating IP67

Atmospheric

pressure

53 kPa to 106 kPa

1.4 Ordering Information

To place an order, contact the Huawei local office.

Part Number Description

02350ALD Assembling

Components,AP8030DN,AP8030DN,AP8030DN

Mainframe(11ac,General AP Outdoor,3x3 Double

Frequency,Built-in Antenna)

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Part Number Description

02359462 Assembling

Components,AP8130DN,AP8130DN,AP8130DN

Mainframe(11ac,General AP Outdoor,3x3 Double

Frequency,External Antenna)

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 1 AP8130DN & AP8030DN Overview

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2 AP Installation

About This Chapter

2.1 Preparing for Installation

2.2 Installation Flowchart

2.3 Unpacking the Equipment

2.4 Determining the Installation Position

2.5 Installing the AP

2.6 Connecting Cables

2.7 Installing the Security Lock

2.8 Checking the AP After Installation

2.9 Powering on the AP

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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2.1 Preparing for Installation

This section describes safety precautions and tool preparations for AP installation.

Safety Precautions

lTake proper measures to prevent injuries and device damage.

lPlace the device in a dry and flat position away from any liquid and prevent the device from

slipping.

lKeep the device clean.

lDo not put the device and tools in the aisles.

CAUTION

Only the qualified personnel are permitted to install and remove the device and its accessories.

Before installation and operation, read the safety precautions carefully.

Tool Preparation

To install the APs, prepare tools listed in Table 2-1.

Table 2-1 Tools

Phillips screwdriver (M4) Torque screwdriver

3mm/5mm

(M3-M6)

Torque socket (M6)

Hammer drill (φ8) Utility knife Cable cutter

Diagonal pliers RJ45 crimping tool Wire stripper

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Hardware Installation and Maintenance Guide 2 AP Installation

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Network cable tester Multimeter Inner hexagon wrench (M6)

Ladder Adjustable wrench Rubber mallet

ESD gloves Level Marker

Torque wrench

(Use an N-type open-end

torque wrench.)

2.2 Installation Flowchart

Figure 2-1 shows the flowchart for installing an AP8130DN.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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Figure 2-1 Installation flowchart

Determine the

installation location

Start

Check before installation

Fix the wall-mounting

Bracket against the wall

Fix the wall-mounting

Bracket against the pole

Install the AP

Connect the cable

Connect the security lock

to the lock hole

Power on the AP

Check after installation

End

Against the wall Against the pole

2.3 Unpacking the Equipment

Before unpacking the carton, ensure that the packing carton is intact and not damaged or soaked.

Stop unpacking if the equipment is rusted or soggy. Then, investigate causes and contact the

supplier.

After unpacking, check items in the carton against the packing list. If any item is missing, contact

the supplier or agent.

Usually, the packing carton contains all items listed in the packing list shown in Table 2-2.

Table 2-2 Packing list

No. Item Quantity

1AP device 1

2 Mounting bracket 1

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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No. Item Quantity

3PG connector 2

4 M4x12 hexagon socket head

cap screw

5 Expansion bolt 2

6 Hose clamp 2

7 OT terminal lM4: 2

lM6: 1

lM8: 1

8 Casting Adjustable-degree

solid1

9 Quick Start Guide 1

Pay attention to the following:

lOnly the AP8030DN carton contains the casting adjustable-degree solid.

lFigures in the document are for reference only and may be different from actual devices.

lRemove the protective film on the AP surface before installation to prevent electrostatic

discharge.

2.4 Determining the Installation Position

When determining the AP installation position, comply with the following rules:

lDo not install the AP in the place with high temperature, dust, noxious gas, or unstable

voltage, or in the place near flammable or explosive materials and interference sources such

as a large radar station, radio station, and transformer station.

lInstall the AP in a site that is free from leaking or dripping water, heavy dew, and humidity,

and take protective measures to prevent water from flowing into the equipment along the

cable.

lInstall the AP in a hidden position that does not affect daily lives and work of residents.

lMake the engineering design by fully considering such factors as hydrology, geology,

earthquake, electric power, and traffic. The selected site should comply with the

environment design specifications of communications equipment.

The AP8030DN and AP8130DN can be installed against a pole or a wall. The AP must be

installed by professional installation personnel, and the installation position is determined

according to the site survey.

Figure 2-2 and Figure 2-3 shows dimensions of the AP8030DN and AP8130DN.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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Figure 2-2 Dimensions of an AP8030DN (unit: mm)

290 100

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260

Figure 2-3 Dimensions of an AP8130DN (unit: mm)

100

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260

290

The AP8030DN and AP8130DN have the same space requirements. Figure 2-4 shows space

requirements for installing an AP8130DN.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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Figure 2-4 Space requirements for installing an AP8130DN (unit: mm)

'HIDXOW

≥500

≥1000

≥500

≥200

2.5 Installing the AP

NOTE

If the AP surface is covered with protective film, remove it before installation.

2.5.1 Wall Mounting

Wall mounting requires use of the mounting bracket and matching expansion bolts. The

AP8030DN installation requires use of the angle adjusting component but the AP8130DN does

not.

lInstalling an AP8030DN

lInstalling an AP8130DN

Installing an AP8030DN

1. Fix the mounting bracket to the wall, adjust the installation position, and use the marker to

mark the drilling positions where expansion bolts are installed, as shown in the following

figure.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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64mm

37mm

NOTE

Usually, the device can be fixed by installing two expansion bolts at diagonal positions.

2. Use an 8 mm drill bit to drill 35 mm to 40 mm deep holes in the drilling positions and

hammer the expansion bolts into the installation holes until the flat washers are completely

attached to the wall. Then, remove the nut, spring washer, and flat washer in order.

90Ǆ

Ø8

35mm~40mm

1 2

3. Use four M4x12 hexagon socket head cap screws to fasten the AP-side module of the

mounting bracket to the AP.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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** ** * *

'HIDXOW

** ** * *

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Hexagon socket

head cap screw

1N•m

4. Hang the wall-side module of the mounting bracket on the expansion bolts and use a wrench

to fasten the flat washers, spring washers, and nuts in order.

5N•m

5. Hang the angle adjusting component on the mounting bracket and use a Phillips screwdriver

to tighten the screw at position 3, with a tightening torque of 1.4N*m.

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6. Loosen the screws at position 1 and position 2 using an M6 hex key.

NOTE

The screw at position 4 does not need to be loosened.

lTo adjust the horizontal angle of the AP, use the M6 hex key to remove the screw at

position 2, lift the angle adjusting component vertically, and adjust the angle adjusting

component horizontally.

Huawei AP8030DN & AP8130DN

Hardware Installation and Maintenance Guide 2 AP Installation

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lTo adjust the vertical angle of the AP, use the M6 hex key to loosen the screw at position

1, install the AP, and adjust the vertical angle with the weight of the AP.

7. Hang the AP with the AP-side mounting bracket module to the wall-side mounting bracket

module and tighten the screws to secure the AP.

Installing an AP8130DN

1. Fix the mounting bracket to the wall, adjust the installation position, and use the marker to

mark the drilling positions where expansion bolts are installed, as shown in the following

figure.

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NOTE

Usually, the device can be fixed by installing two expansion bolts at diagonal positions.

2. Use an 8 mm drill bit to drill 35 mm to 40 mm deep holes in the drilling positions and

hammer the expansion bolts into the installation holes until the flat washers are completely

attached to the wall. Then, remove the nut, spring washer, and flat washer in order.

90Ǆ

Ø8

35mm~40mm

1 2

3. Use four M4x12 hexagon socket head cap screws to fasten the AP-side module of the

mounting bracket to the AP.

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4. Hang the wall-side module of the mounting bracket on the expansion bolts and use a wrench

to fasten the flat washers, spring washers, and nuts in order.

5. Hang the AP with the AP-side mounting bracket module to the wall-side mounting bracket

module and tighten the screws to secure the AP.

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2.5.2 Pole Mounting

An outdoor AP must be installed on a pole with a diameter of 48 mm to 114 mm and the thickness

must be at least 2.5 mm. The AP8030DN installation requires use of the angle adjusting

component but the AP8130DN does not.

lInstalling an AP8030DN

lInstalling an AP8130DN

Installing an AP8030DN

1. Determine the AP installation position and attach the mounting bracket on the pole using

the hose clamp.

a. Use the M6 hex torque screwdriver to loosen screws on the hose clamp and lift the

lid.

b. Slide the hose clamp through the hole of the mounting bracket, attach it to the pole,

and close the hose clamp.

c. Close the lid.

d. Use the hex torque screwdriver to tighten the screws with a torque of 5 N•m.

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5N•m

2. Hang the angle adjusting component on the mounting bracket and use a Phillips screwdriver

to tighten the screw at position 3, with a tightening torque of 1.4N•m.

3. Loosen the screws at position 1 and position 2 using an M6 hex key.

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NOTE

The screw at position 4 does not need to be loosened.

lTo adjust the horizontal angle of the AP, use the M6 hex key to remove the screw at

position 2, lift the angle adjusting component vertically, and adjust the angle adjusting

component horizontally.

lTo adjust the vertical angle of the AP, use the M6 hex key to loosen the screw at position

1, install the AP, and adjust the vertical angle with the weight of the AP.

4. Hang the AP with the AP-side mounting bracket module to the wall-side mounting bracket

module and tighten the screws to secure the AP.

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Installing an AP8130DN

Mounting an AP on a vertical pole

1. Determine the AP installation position and attach the mounting bracket on the pole using

the hose clamp.

a. Use the M6 hex torque screwdriver to loosen screws on the hose clamp and lift the

lid.

b. Slide the hose clamp through the hole of the mounting bracket, attach it to the pole,

and close the hose clamp.

c. Close the lid.

d. Use the hex torque screwdriver to tighten the screws with a torque of 5 N•m.

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2. Hang the AP with the AP-side mounting bracket module to the wall-side mounting bracket

module and tighten the screws to secure the AP.

Mounting an AP on a horizontal pole

The procedure for installing the AP against a horizontal pole is similar to the procedure for

installing the AP against a vertical pole.

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2.6 Connecting Cables

Figure 2-5 AP8130DN external cable arrangement

Feed line Feed line Feed line Feed line

Feed line Feed line

Optical fiber Network cable

2.6.1 Connecting RF Cables

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RF cable deployment requirements

lIt is recommended that you connect a 50 ohm RF load to an idle antenna interface and wrap

the RF load with insulation tape and waterproof tape. Huawei offers 50 ohm RF loads for

you to purchase.

lWrap the RF cable using one-layer PVC insulation tape, three-layer waterproof adhesive

tape, and then three-layer PVC insulation tape.

lBefore wrapping the waterproof tape, stretch the tape evenly until the tape turns 1/2 as wide

as before. Wrap each layer of tape tightly and ensure that each layer covers more than 50%

of the layer below it.

lWrap the three-layer tape from bottom to top, from top to bottom, and then from bottom

to top.

lBend radius requirements: RG-8U RF cable: > 150 mm; 1/2" RF cable: > 50 mm; 7/8" RF

cable: > 250 mm. One inch equals to 25.4 mm.

NOTICE

Tighten the nut of the AP's RF connector with a maximum torque of 1.2 N•m.

RF cable connections

1. Antenna interfaces of the AP provides a 5 KA surge protection capability. Generally, no

additional surge protective device needs to be installed, and the RF cables are directly

connected to the antenna interfaces.

2. If a higher surge protection capability is required, the customer can purchase a surge

protective device. When installing the surge protective device, ensure that it is connected

to a ground cable.

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2.6.2 Connecting Optical Fibers and Network Cables

Connecting optical fibers

NOTE

The device can transmit upstream data over optical fibers. The optical fiber is connected to the device using

fiber connectors (purchased independently).

The following figure shows components of an optical fiber connector.

Figure 2-6 Components of an optical fiber connector

(1) Optical fiber (2) Support (3) Rubber ring (4) External connector shell

1. Select an optical cable of a proper length based on onsite cabling.

2. Remove the waterproof block from the rubber ring of the connector, as shown in the

following figure.

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Figure 2-7 Removing the waterproof block

3. Assemble the connector on the optical fiber.

a. Assemble the external connector shell and support, as shown in the following figure.

Figure 2-8 Assembling the connector (1)

b. Put the rubber ring on the optical fiber and insert it into the support in compliance

with the direction indicated on the ring, as shown in the following figure.

Figure 2-9 Assembling the connector (2)

NOTE

Ensure that the arrow on the rubber ring points to the support.

4. Remove the sealing cover of the optical fiber port on the device and insert the optical fiber

into the port. Turn the support to find the correct optical fiber installation slot and push the

support forward (together with the rubber ring) until the optical fiber is installed to the

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correct position. Rotate the external connector shell clockwise until the red ring is not

visible, as shown in the following figure.

Figure 2-10 Connecting optical fibers

NOTICE

lConnect the optical fiber correctly; otherwise, the optical fiber may be damaged.

lBundle the optical fibers with binding tapes every 1 m.

Connecting network cables

1. Use a shielded straight-through cable. Cut the cable into a proper length based on the

distance between the AP and the PSE device, strip the cables on both ends, and crimp the

wires into RJ45 connectors.

2. Make a network cable onsite according to pin assignment in Table 2-3. Otherwise, the

communication quality is affected even if devices can be connected.

Table 2-3 Pin assignment

X1 Pin Wire Color X2 Pin

1White and orange 1

2 Orange 2

3 White and green 3

4 Blue 4

5 White and blue 5

6 Green 6

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X1 Pin Wire Color X2 Pin

7White and brown 7

8 Brown 8

NOTE

Actually, APs use shielded straight-through network cables, which are connected in the same way

as unshielded network cables.

3. Put the network cable through waterproof PG connectors. Connect the RJ45 connector to

the ETH/PoE interface on the AP and secure the waterproof PG connector. See figures b,

c, and d.

Figure 2-11 Connecting network cables

bcd

NOTE

lThe network cables used are shielded straight-through cables.

lEnsure that the RJ45 connector is correctly connected to the AP. Otherwise, the network cable

may be damaged. Before removing the network cable from the AP, remove the waterproof PG

connector first and then remove the RJ45 connector.

lThe cable cannot exceed 100 meters.

2.6.3 Connecting Ground Cables

Grounding is a key step in device installation. The ground cable of a device must be correctly

connected to protect the device from lightning, electromagnetic interference, and electrostatic

charges. Outdoor APs support built-in surge protection on all interfaces, but the surge protection

works only when the outdoor APs are grounded.

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Requirements for laying out ground cables

lThe ground cables must be connected to a group of ground bars.

lThe bend radius of the ground cables must be larger than or equal to five times the cable

diameter.

lThe ground cables must be buried underground or routed indoors and cannot be led into

the equipment room aerially.

lBoth ends of the external conductor of the coaxial cable and those of the shield layer of the

shielded cable should have good electric contact with the metal shell of the equipment they

connect to.

lGround cables must be separated from signal cables to reduce interference between them.

lDo not add any switch or fuse on the ground cable.

lDo not use another device for an electrical connection with the ground cable.

lAll metal components in the shell must be securely connected to the ground terminal.

Ground cable connections

1. Cut the ground cable into a proper length and use the M4 OT terminal to connect to the

AP. The OT terminal used to connect to the ground terminal depends on site requirements.

NOTE

To tighten the screws with a torque on the ground bar,

lM4: 1.4N•m.

lM6: 4.8N•m.

lM8: 12N•m.

2. The equipment functions properly when the ground resistance is less than 10 ohms.

Grounding shielded network cables

Using shielded network cables can improve surge protection performance of the AP. To connect

the cable, cut the shield layer open, connect the cable to the ground clip, and wrap the cable with

waterproof and ESD tapes.

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1. Determine the position for installing the ground clip on the cable based on the actual cable

route.

2. Use a utility knife to strip the sheath off the network cable for about 32 mm (1.26in.) to

expose the shield layer.

NOTICE

Do not damage the shield layer when stripping the sheath off the cable.

3. Install the ground clip on the shield layer of the cable, and then use a screwdriver to tighten

the screws on the ground clip.

(1) Ground cable (2) Ground clip (3) Network cable

4. Wrap three layers of waterproof tape and three layers of polyvinyl chloride (PVC) insulation

tape at the ground clip.

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NOTICE

lWrap the tape around the clip from bottom up, then from top down, and finally from

bottom up. Do not cut the tape until all the three layers of the tape are already wrapped.

When wrapping tape, be sure that each layer of tape overlaps more than 50% of the

preceding layer.

lThe degree between the ground cable and the network cable cable is not greater than

15°. When the network cable is routed vertically, the ground cable must be routed

downwards.

(1) Waterproof tape (2) PVC insulation

tape

(3) Network cable (4) Ground cable

5. Connect the ground cable to an external ground bar.

2.6.4 Installing Outdoor Antennas

Two types of outdoor antennas are available: directional outdoor antenna and omnidirectional

outdoor antenna. Omnidirectional antennas can be directly installed on APs.

Installing a directional outdoor antenna against a pole

Pay attention to the following points when installing a directional antenna:

1. An outdoor antenna must be installed on a pole with a diameter of 30 mm to 50 mm and

the thickness must be at least 2.5 mm. A 50 mm diameter pole made of round steel is usually

used.

2. Weld the lightning rod on the top of the antenna pole.

3. Install the antenna pole on a parapet or concrete bed on the roof of the building.

4. Use a 40 mm x 4 mm flat steel to connect the antenna pole to an earth mat.

5. Secure the directional outdoor antenna on the pole with an antenna support.

6. Keep the pole vertical to the ground during the installation.

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See Figure 2-12 below for how a directional outdoor antenna is installed on a pole.

lIf the roof of the building is surrounded by parapets of no less than 1.2 m high, fix the pole

on a parapet with expansion screws, and then fix the directional outdoor antenna on the

pole with an antenna support.

lIf the roof of the building is surrounded by parapets of less than 1.2 m high, fix the pole on

a parapet and on the ground with expansion screws, and then fix the directional outdoor

antenna on the pole with an antenna support.

lIf there is no parapet around the roof, fix the pole on the ground or a concrete bed with

expansion screws and steel wires, and then fix the directional outdoor antenna on the pole

with an antenna support.

Figure 2-12 Installing a directional outdoor antenna against a pole

Outdoor

directional

antenna

Parapet

Lightning rod

Antenna support

Pole

Flat steel

Connected to

the earth mat

Parapet height > 1.2 m Parapet height < 1.2 m No parapet

Steel wire

Concrete

bed

Figure 2-13 shows outdoor AP installation scenarios.

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Figure 2-13 Outdoor AP installation scenarios

Installing an omnidirectional outdoor antenna against a pole

Pay attention to the following points when installing an omnidirectional antenna:

1. An outdoor antenna must be installed on a pole with a diameter of 30 mm to 50 mm and

the thickness must be at least 2.5 mm. A 50 mm diameter pole made of round steel is usually

used.

2. The top of pole must be aligned with the hose clamp at the bottom of the antenna.

3. The antenna must be installed at a proper height to provide sufficient signal coverage, and

the top of the antenna must be within the 45 degrees protection angle of the lighting rod.

4. Do no weld a lightning rod directly on the antenna pole (there should not be metal subjects

within 1 m around an omnidirectional antenna). Instead, install an independent lightning

rod between two omnidirectional antenna poles. Adjust the height of the lightning rod to

ensure that the omnidirectional antennas are covered in the protection angle.

Figure 2-14 shows installation of an omnidirectional outdoor antenna.

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Figure 2-14 Installing an omnidirectional outdoor antenna

Protection

angle

Omnidirectional

antenna

Hose clamp

Antenna pole

Lightning rod

>1.0m

NOTE

If antennas are installed on a metal pole such as a steel pole, you do not need to install a lightening rod, as

shown on the right in Figure 2-14.

2.7 Installing the Security Lock

There is a security slot on the AP. You can lock the AP to an immovable object to prevent the

AP against theft. The detailed procedures are as follows:

1. Fasten the cable of the security lock to an immovable object around.

2. Insert the security lock into the security slot and lock it.

Lock hole

Security lock

Console/RSSI

Default

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NOTE

You need to purchase the security lock separately.

2.8 Checking the AP After Installation

Table 2-4 shows the items to be checked after AP installation is complete.

Table 2-4 AP installation checklist

No. Check Item

1The AP is installed by strictly following the design draft. The installation

position meets space requirements, with maintenance space reserved.

2 The AP is securely installed.

3 Waterproof caps are installed on idle interfaces and securely fastened.

4 The power cables and PGND cables are intact and not spliced.

5 Terminals of the power cables and PGND cables are welded or cramped

firmly.

6 All power cables or PGND cables are not short-circuited or reversely

connected and must be intact with no damage.

7 The power cables and ground cables are separated from other cables and

bundled separately.

8 The working ground, protection ground, and surge protection ground share

the same group of ground bars.

9 Connectors of signal cables are complete, intact, and tightly connected.

The signal cables are not damaged or broken.

10 Labels on cables, feeders, or jumpers are clear and correct.

2.9 Powering on the AP

After the AP installation is complete, observe indicators on the AP to determine the system

running status. For details, see 1.2 Indicator Description.

NOTE

Do not frequently power on and off an AP.

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3 Logging In to the AP

About This Chapter

After an AP is powered on, you can log in to the AP using the following method:

Version Telnet server STelnet server

V200R003C00 and earlier

versions

Enable Enable

V200R005C00 and later

versions

Disable Enable

3.1 Logging In to the AP Through the Console Port

3.2 Logging In to the AP Using STelnet

3.3 Logging In to the AP Using Telnet

3.4 Logging In to the AP Using a Web Client

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3.1 Logging In to the AP Through the Console Port

This section describes how to log in to the AP through the console port. After logging in to the

AP, you can configure the AP using commands.

1. Connect a PC to the AP using a console cable. Connect the RJ45 connector to the console

port of the AP and the DB9 connector to the serial port of a PC.

NOTE

If your PC's operating system provides terminal simulation software (like HyperTerminal in

Windows 2000/XP), you do not need to install additional terminal simulation software. If the PC

runs on an operating system without terminal simulation software (like Windows 7), install third-

party terminal simulation software on the PC by referring to user manual or online help.

2. Start the terminal simulation software, create a connection, select a serial port, and set

communication parameters as follows.

lBits per second (B): 9600

lData bits (B): 8

lParity (P): None

lStop bits (S): 1

lFlow control (F): None

3. Press Enter until the command line prompt of the user view, such as <Enterprise AP>, is

displayed. Then, you enter the user configuration interface. You can run commands to

configure the AP. Enter a question mark (?) whenever you need help.

3.2 Logging In to the AP Using STelnet

This section describes how to log in to the AP using STelnet. After logging in to the AP, you

can configure the AP using commands.

Before logging in to the device through STelnet, complete the following tasks:

lStarting the device properly

lPreparing network cables used to connect device interfaces.

lConfiguring the PC's IP address and subnet mask. The IP address must be on the network

segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended. The

subnet mask is 255.255.0.0.

NOTE

lEnsuring that the IP address 169.254.1.1 and subnet mask 255.255.0.0 have been configured on VLANIF

1 of the device before the delivery, and GE0/0/0 has been added to VLAN 1 by default.

lBefore the device is delivered, the STelnet service has been configured on the device. The STelnet interface

number is 22, and the default user name and password are respectively admin and admin@huawei.com.

Use the SSH client software to log in to the device through STelnet from a terminal. The

third-party software PuTTY is used as an example here.

1. After the device is powered on, connect the PC's network interface to GE0/0/0 of the device

using network cables.

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NOTE

Ping 169.254.1.1 from the PC to check whether the device can be pinged successfully. If the ping

operation fails, check whether the PC's IP address is correct or replace the network cable.

2. Use the PuTTY software to log in to the device, enter the device IP address, and select the

SSH protocol type.

Figure 3-1 PuTTY Configuration page

3. Click Open. Enter the user name and password at the prompt, and press Enter. You have

logged in to the device. (The following information is only for reference.)

Sent username "admin"

admin@169.254.1.1's password:

NOTE

It is recommended that you change the initial user name and password after login.

3.3 Logging In to the AP Using Telnet

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This section describes how to log in to the AP using Telnet. After logging in to the AP, you can

configure the AP using commands.

NOTE

The Telnet protocol poses a security risk, and therefore the STelnet V2 protocol is recommended.

1. Connect a PC to the ETH/PoE interface of the AP using a network cable.

2. Configure a static IP address for the PC. The IP address must be in the same network

segment as the AP's IP address. After completing the configuration, ping the AP's IP address

from the PC. If the ping operation succeeds, the connection is set up successfully. If the

ping operation fails, check whether the network cable is faulty.

NOTE

lThe IP address 169.254.1.1 and subnet mask 255.255.0.0 have been configured on VLANIF 1 of the

AP before the delivery, and GE0/0/1 has been added to VLAN 1 by default.

lIf the AP working in Fit AP mode is online on the AC, the DHCP server automatically assigns an IP

address to the AP. You can remotely log in to the AC on a local terminal and run the following

command to check the AP's IP address:

lFor V200R005C30 and earlier versions: display ap-run-info id ap-id

lFor V200R006C00: display ap run-info ap-name ap-name

3. Enter the command line interface on the PC. For example, in Windows XP, choose Start

> Run and enter cmd in the displayed dialog box.

4. Use Telnet to log in to the AP.

5. Enter the default user name and password. The default user name is admin, and the default

password is admin@huawei.com. If the user view is displayed, you have logged in

successfully. You are advised to change the user name and password on your first login.

NOTE

You can run the quit command to exit from the Telnet window. When the system fails to exit from the

Telnet window:

lIf you logged in to the AP from an AC or a switch, press Ctrl+T to return to the AC or switch view.

This operation does not affect AP services.

lIf you logged in to the AP from a PC, directly close the Telnet window. This operation does not affect

AP services.

3.4 Logging In to the AP Using a Web Client

Pre-configuration Tasks

Before configuring users to log in to the AP using HTTP, complete the following task:

Configure reachable routes between the terminal and the AP.

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NOTE

lThe web management system is enabled on the AP before delivery. The default IP address of the web

management system is 169.254.1.1 and the mask is 255.255.0.0. The web management system provides

a default user account, with the user name admin and password admin@huawei.com. You are advised

to change the user name and password on your first login. Assign your PC an IP address on the same

network segment as the default IP address of the web management system, and connect the PC to the

GE interface. Start the web browser on the PC and visit http://169.254.1.1 to log in to the web

management system.

lYou can only log in to the FAT AP using the web platform.

Procedure

Step 1 Open a web browser on a PC, and enter the management address in the format of http://

169.254.1.1 in the address bar. Ensure that the PC and AC can communicate with each other.

Then press Enter. Set the language, user name, and password. The HTTPS login URL is

displayed in the address box indicating that the system has gone to the HTTPS login page.

NOTE

You can also enter https://IP address in the address box to log in to the AP using HTTPS. HTTPS ensures

security of login information during login and security of data exchanged during subsequent operations.

Step 2 Click Login or press Enter. The web system home page is displayed. You can manage and

maintain the equipment. For details, see the Huawei Wireless Access Points Web-based

Configuration.

----End

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4 Hardware Failures

About This Chapter

This section describes common methods for troubleshooting typical hardware faults.

4.1 An device Fails to Be Powered On

4.2 An Optical Interface Cannot Turn Up

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4.1 An device Fails to Be Powered On

Fault Description

The SYS indicator of a device is off.

Possible Causes

lThe power sourcing equipment does not support the PoE function or is faulty.

lThe power sourcing equipment is incorrectly configured (the PoE function is disabled or

the power-off time range is improperly set).

lThe line is faulty (the network cable or distribution frame is damaged).

lThe AP is faulty.

Troubleshooting Procedure

1. Check whether the power sourcing equipment supports PoE or is faulty.

2. Check whether the configuration on the power sourcing equipment causes PoE power

supply errors, such as the PoE function is disabled or the power-off time range is incorrectly

set.

3. Check whether the network cable or distribution frame is faulty.

4. If the device still cannot be powered on, the device itself is faulty. Contact Huawei technical

support engineers or Huawei agent and ask them to replace the device.

4.2 An Optical Interface Cannot Turn Up

Fault Description

After an optical interface is connected to a remote device through an optical fiber, its LINK

indicator is off.

Possible Causes

lThe optical fiber is faulty.

lThe optical module on the optical interface cannot meet the requirements.

Troubleshooting Procedure

1. Replace the optical fiber and optical module and check whether the optical interface can

turn Up. Ensure that the optical module meets the following requirements.

2. Determine optical module attributes.

lThe optical module has passed Huawei certification.

lThe transmission speed of the optical module is the same as the interface speed.

lThe wavelength of the optical module is the same as that of the remote optical module.

lThe transmission distance of the optical module is suitable for the actual distance

between the two devices.

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NOTE

lThe transmission distance of an optical module is 10 km, 15 km, 20 km, 40 km, or 80 km.

The optical modules with a longer transmission distance have a higher transmit power. If an

optical module with a long transmission distance is used for short-distance transmission, the

optical interface cannot turn Up because the transmit power is too high. The high transmit

power may even burn the receiver of the remote optical module. To reduce the transmit power

in this situation, use an optical attenuator between the optical module and optical fiber.

lOptical modules with different speeds are available, for example, 155 Mbit/s, 622 Mbit/s,

and 1.25 Gbit/s. It is recommended that you use an optical module with the same speed as

the optical interface to ensure efficient optical transmission.

3. If the interface remains Down, contact Huawei technical support.

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5 Appendix

About This Chapter

5.1 On-site Cable Assembly and Installation

5.2 Environmental Requirements for Device Operation

5.3 Equipment Grounding Specifications

5.4 Engineering Labels for Cables

5.5 Guide to Using Optical Modules

5.6 Fault Tag

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5.1 On-site Cable Assembly and Installation

5.1.1 Cable Assembly Precautions

Checking the Appearance of Cables

lIf the cable jacket or insulation is visibly dirty, clean it before assembly.

lIf the jacket or insulation of a cable has visible damage, irreparable scuffing, or other

defects, do not use the cable.

lIf the shield layer of a cable is damaged, do not use the cable.

lIf the cable jacket or insulation cracks after the cable is bent or twisted, discard this cable

and check whether other cables have the same problem. If other cables have the same

problem, replace these cables.

Checking the Appearance of Connectors

lDo not use connectors with visible defects, damage, rust or scuffing.

lDo not use connectors if their shells or pins have exposed part or uneven plating, or their

pins are lost, broken, or bent.

lDo not use connectors that have dirt on their pins or in their jacks or if there are conductors

between pins or between pins and the shell.

Precautions for Assembly

lUse dedicated tools or tools delivered by Huawei and follow the methods given here during

assembly.

lHold terminals of cables instead of pulling the cables when installing or removing cable

components.

lTake the following precautions when cutting or stripping cables:

–Make cables slightly longer than necessary.

–Coil cables longer than 2 m (6.56 ft) after cutting. Bind and fasten the coils using

bundling ropes. The inner diameters of the coils should be larger than 20 times the outer

diameters of the cables.

–When stripping the jackets of cables, avoid damaging the shield layers (braid or

aluminum foil), insulation, core conductors, and other jackets that do not need to be

stripped.

–After assembling cables, cut all visible cross sections of jackets to ensure that the cross

sections are arranged neatly.

–Do not touch the core conductors of cables with your hands. Terminate exposed

conductors in a timely way after stripping off insulation so that the surface of the

conductors does not become oxidized.

lTake the following precautions when crimping and connecting cables or connectors:

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–The terminals and conductors should be connected tightly after they are crimped. They

should not be moved or turned.

–Cut all the exposed copper wires.

–Try to avoid a second crimping of sleeves.

–Keep all the conductors clean and aligned.

NOTE

The connectors, cables, and tools provided by different vendors may be different. The figures in this

document are only for your reference.

5.1.2 Assembling Power Cables

Assembling the OT Terminal and Power Cable

Context

Figure 5-1 shows the components of an OT terminal and a power cable.

Figure 5-1 Components of an OT terminal and a power cable

A Heat-shrinkable tubing B. Bare crimping terminal C. Insulation D. Conductor

Procedure

Step 1 Based on the cross-sectional area of the cable conductor, strip a length of insulation coating C

to expose the conductor D of length L1, as shown in Figure 5-2. The recommended values of

L1 are listed in Table 5-1.

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Figure 5-2 Stripping a power cable (OT terminal)

NOTICE

lWhen you strip a power cable, do not damage the conductor of the cable.

lIf the bare crimping terminal is not provided by Huawei, the value of L1 is 1 mm (0.04 in.)

to 2 mm (0.08 in.) greater than the value of L.

Table 5-1 Mapping between the cross-sectional area of the conductor and the value of L1

Cross-

Sectional Area

of Conductor

(mm2(in.2))

Value of L1 (mm

(in.))

Cross-Sectional

Area of Conductor

(mm2(in.2))

Value of L1 (mm

(in.))

1 (0.002) 7 (0.28) 10 (0.015) 11 (0.43)

1.5 (0.002) 7 (0.28) 16 (0.025) 13 (0.51)

2.5 (0.004) 7 (0.28) 25 (0.039) 14 (0.55)

4 (0.006) 8 (0.31) 35 (0.054) 16 (0.63)

6 (0.009) 9 (0.35) 50 (0.077) 16 (0.63)

NOTE

If you are proficient in assembling OT terminals and power cables, you can obtain the value of L1 by

comparing the part to be crimped with the power cable.

Step 2 Put the heat-shrinkable (A) tubing onto the bare crimping terminal, as shown in Figure 5-3.

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Figure 5-3 Putting the heat shrink tubing onto the bare crimping terminal

Step 3 Put the OT terminal B onto the exposed conductor, and ensure that the OT terminal is in good

contact with the insulation coating C, as shown in Figure 5-3.

NOTICE

After the conductor is fed into the OT terminal, the protruding part of the conductor, or L2 in

Figure 5-3, must not be longer than 2 mm (0.08 in.).

Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure 5-4.

NOTE

The shapes of crimped parts may vary with the crimping dies.

Figure 5-4 Crimping the joint parts of the bare crimping terminal and the conductor (OT

terminal)

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Step 5 Push the heat shrink tubing (A) towards the connector until the tube covers the crimped part,

and then heat the tube by using a heat gun, as shown in Figure 5-5.

Figure 5-5 Heating the heat shrink tubing (OT terminal)

NOTICE

Stop heating the shrink tubing when the connector is securely locked in the shrink tubing. Do

not heat the shrink tubing too long to damage the insulation coating.

----End

Assembling the JG Terminal and Power Cable

Context

Figure 5-6 shows the components of a JG terminal and a power cable.

Figure 5-6 Components of a JG terminal and a power cable

A. JG terminal B. Heat-shrinkable tube C. Insulation layer of a power cable D. Conductor of a power cable

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Procedure

Step 1 Based on the cross-sectional area of the cable conductor, strip a part of the cable. The L-long

conductor is exposed, as shown in Figure 5-7. The recommended values of L are listed in Table

5-2.

NOTICE

lWhen you strip a power cable, do not damage the conductor of the cable.

lIf the bare crimping terminal is not provided by Huawei, you can adjust the value of L as

required.

Figure 5-7 Stripping a power cable (JG terminal)

Table 5-2 Mapping between the cross-sectional area of the conductor and the value of L

Cross-Sectional Area of Conductor

(mm2(in.2))

Value of L (mm(in.))

16 (0.025) 13 (0.51)

25 (0.039) 14 (0.55)

35 (0.054) 16 (0.63)

50 (0.077) 16 (0.63)

Step 2 Put the heat shrink tubing onto the bare crimping terminal, as shown in Figure 5-8.

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Figure 5-8 Putting the heat shrink tubing onto the bare crimping terminal

Step 3 Put the bare crimping terminal onto the exposed conductor, and ensure that the bare crimping

terminal is in good contact with the insulation of the power cable, as shown in Figure 5-8.

Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure 5-9.

Figure 5-9 Crimping the joint parts of the bare crimping terminal and the conductor (JG terminal)

Step 5 Push the heat shrink tubing towards the connector until the tube covers the crimped part, and

then heat the tube by using a heat gun, as shown in Figure 5-10.

Figure 5-10 Heating the heat shrink tubing (JG terminal)

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----End

Assembling the Cord End Terminal and the Power Cable

Context

Figure 5-11 shows the components of a cord end terminal and a power cable.

Figure 5-11 Components of a cord end terminal and a power cable

A. Cord end terminal B. Insulation layer of a power cable C. Conductor of a power cable

Procedure

Step 1 Based on the cross-sectional area of the cable conductor, strip a part of the insulation. The L1-

long conductor is exposed, as shown in Figure 5-12. The recommended values of L1 are listed

in Table 5-3.

NOTICE

When you strip a power cable, do not damage the conductor of the cable.

Figure 5-12 Stripping a power cable (cord end terminal)

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Table 5-3 Mapping between the cross-sectional area of the conductor and the value of L1

Cross-

Sectional Area

of Conductor

(mm2(in.2))

Value of L1 (mm

(in.))

Cross-Sectional

Area of Conductor

(mm2(in.2))

Value of L1 (mm

(in.))

1 (0.002) 8 (0.31) 10 (0.015) 15 (0.59)

1.5 (0.002) 10 (0.39) 16 (0.025) 15 (0.59)

2.5 (0.004) 10 (0.39) 25 (0.039) 18 (0.71)

4 (0.006) 12 (0.47) 35 (0.054) 19 (0.75)

6 (0.009) 14 (0.55) 50 (0.077) 26 (1.02)

Step 2 Putting the cord end terminal onto the conductor, and ensure that the conductor is aligned with

the edge of the cord end terminal, as shown in Figure 5-13.

NOTICE

After the conductor is fed into the cord end terminal, the protruding part of the conductor must

not be longer than 1 mm (0.04 in.).

Figure 5-13 Put the cord end terminal onto the conductor

Step 3 Crimp the joint parts of the cord end terminal and the conductor, as shown in Figure 5-14.

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Figure 5-14 Crimping the cord end terminal and the conductor

Step 4 Check the maximum width of the tubular crimped terminal. The maximum width of a tubular

crimped terminal is listed in Table 5-4.

Table 5-4 Maximum width of a tubular crimped terminal

Cross-Sectional Area of Tubular

Terminal (mm2(in.2))

Maximum Width of Crimped Terminal

W1 (mm(in.))

0.25 (0.0004) 1 (0.04)

0.5 (0.0008) 1 (0.04)

1.0 (0.0015) 1.5 (0.06)

1.5 (0.0023) 1.5 (0.06)

2.5 (0.0039) 2.4 (0.09)

4 (0.006) 3.1 (0.12)

6 (0.009) 4 (0.16)

10 (0.015) 5.3 (0.21)

16 (0.025) 6 (0.24)

25 (0.039) 8.7 (0.34)

35 (0.054) 10 (0.39)

----End

5.1.3 Assembling Ethernet Cables

Assembling the Shielded RJ45 Connector and Ethernet Cable

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Context

Figure 5-15 shows the components of an RJ45 connector and a shielded Ethernet cable.

Figure 5-15 Shielded RJ45 connector and cable

A. Jacket of connector B. Metal shell of connector C. Wire holder of connector D. Plug of connector

E. Jacket of Ethernet cable F. Shield layer of Ethernet cable G. Twisted-pair wires -

Procedure

Step 1 Fit the jacket of the connector onto the Ethernet cable, as shown in Figure 5-16.

Figure 5-16 Fit the jacket of the connector onto the Ethernet cable

Step 2 Remove a 30 mm (1.18 in.) long section of the jacket, cut off the nylon twine inside the jacket,

and cut a no more than 5 mm (0.20 in.) cleft in the jacket, as shown in Figure 5-17.

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NOTICE

lWhen you remove a section of the jacket, do not damage the shield layer of the twisted-pair

cable.

lWhen you remove the shield layer, do not damage the insulation of the twisted-pair cable.

Figure 5-17 Removing the jacket of a twisted-pair cable (unit: mm (in.))

Step 3 Fit the metal shell onto the twisted-pair cable. The shield layer is covered by the metal shell, as

shown in Figure 5-18.

Figure 5-18 Fitting the metal shell onto the twisted-pair cable

Step 4 Fit the metal shell onto the twisted-pair cable until the shield layer is covered completely. Along

the edge of the metal shell, cut off the aluminum foil shield layer and ensure that there is no

surplus copper wire. The exposed twisted-pair cable is about 20 mm (0.79 in.) long, as shown

in Figure 5-19.

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Figure 5-19 Removing the shield layer of a twisted-pair cable (unit: mm (in.))

Step 5 Based on the colors, lead the four pairs of twisted-pair wires through the wire holder, as shown

in Figure 5-20 and Figure 5-21.

Figure 5-20 Leading wires through the wire holder

Figure 5-21 Cable locations in a wire holder

White-Green

Green

White-Orange

Orange

Blue

White-Blue

White-Brown

Brown

Step 6 Align the four pairs of cables in the holder, as shown in Figure 5-22. The connections between

the wires and the pins are shown in Figure 5-23 and listed in Table 5-5.

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Figure 5-22 Four pairs of cables on a wire holder

Figure 5-23 Connections between wires and pins

Brown

White-Brown

Green

White-Blue

Blue

White-Green

Orange

White-Orange

Pin 8

Pin 1

Table 5-5 Connections between wires and pins (using a straight-through cable as an example)

Matching Pins of Wires Wire Color

1White-Orange

2 Orange

3 White-Green

4 Blue

5 White-Blue

6 Green

7 White-Brown

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Matching Pins of Wires Wire Color

8Brown

Step 7 Cut off the surplus cables along the lower edge of the wire holder, as shown in Figure 5-24.

Figure 5-24 Cutting off surplus cables

Step 8 Put the connector body onto the wire holder and turn the metal shell by 90°, as shown in Figure

5-25.

NOTE

Ensure that the wire holder is in good contact with the connector body.

Figure 5-25 Put the connector body onto the wire holder

Step 9 Push the metal shell towards the connector body until the wire holder and the connector body

are engaged completely. Crimp the connector, as shown in Figure 5-26.

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Figure 5-26 Crimping the connector

Step 10 Push the jacket towards the metal shell until the metal shell is covered. This completes the

assembly of one end of the cable, as shown in Figure 5-27.

Figure 5-27 Pushing the metal shell

Step 11 To complete the assembly of the other end, repeat Step 1 through Step 10.

----End

Assembling an Unshielded RJ45 Connector and Ethernet Cable

Context

Figure 5-28 shows the components of an unshielded RJ45 connector and cable.

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Figure 5-28 Components of an unshielded RJ45 connector and cable

A. Plug of connector B. Jacket C. Twisted-pair wires

Procedure

Step 1 Remove a 16-mm (0.63 in.) long section of the jacket, as shown in Figure 5-29.

NOTICE

When you remove the shield layer, do not damage the insulation of the twisted-pair cable.

Figure 5-29 Removing the jacket of a twisted-pair cable (unit: mm (in.))

Step 2 Align the four pairs of wires and cut the ends neatly, as shown in Figure 5-30. The connections

between the wires and the pins are listed in Table 5-6.

Figure 5-30 Connections between wires and pins (unit: mm (in.))

White-Orange

White-Green

Orange

Blue

White-Blue

Green

White-Brown

Brown

Pin 8

Pin 1

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Table 5-6 Connections between wires and pins (using a straight-through cable as an example)

Matching Pins of Wires Wire Color

1White-Orange

2 Orange

3 White-Green

4 Blue

5 White-Blue

6 Green

7 White-Brown

8 Brown

Step 3 Feed the cable into the plug, and crimp the connector, as shown in Figure 5-31.

NOTE

When inserting the cable, check from the side or bore of the plug to ensure that the cable is completely

seated in the plug.

Figure 5-31 Crimping the connector

Step 4 To complete the assembly of the other end, repeat Step 1 through Step 3.

----End

Checking the Appearance of Contact Strips

Context

lTo ensure proper contact between the crimped wires and the wire conductors, the heights

and sizes of the contact strips must be standard and the same.

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lThe contact strips must be parallel to each other, with an offset less than ± 5°. The top

margin of a strip must be parallel to the axis of the connector, with an offset less than ±

10°.

lTo ensure conduction, the surface of the contact strips must be clean.

lThe contact strips must be in good contact with the RJ45 socket. The plastic separators

must remain intact and be aligned.

lThe contact strip blade must extend beyond the ends of the wires. The ends of the wires

must be in contact with the edge of the RJ45. The distance between them must be less than

0.5 mm (0.02 in.).

Procedure

Step 1 Hold the crimped connector, with the front side facing you, and check whether the contact strips

are of the same height. The height should be 6.02 ± 0.13 mm (0.237 ± 0.005). If a measuring

tool is not available, you can compare the connector with a standard connector. Figure 5-32

shows an unqualified piece, and Figure 5-33 shows a qualified piece.

NOTE

All unqualified pieces must be crimped again.

Figure 5-32 Contact strips of different heights

Figure 5-33 Contact strips of the same height

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Step 2 Hold an RJ45 connector and turn it 45°. Observe the top edges of the metal contact strips. Figure

5-34 shows an unqualified piece.

Figure 5-34 Unparallel contact strips of different heights

Step 3 Check whether the contact strips are clean. If they are not clean and the dirt cannot be removed,

replace it with a new RJ45 connector. Figure 5-35 shows an unqualified piece.

Figure 5-35 Dirt on a contract strip

Step 4 Check whether the contact strips and the plastic separators are well aligned and intact. If a

separator is skew and cannot be fixed, replace it with a new RJ45 connector. Figure 5-36 shows

an unqualified piece.

Figure 5-36 Skew plastic separators

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Step 5 Hold the connector with the side facing towards you, and check whether you can see the cross-

sections of the wires. Ensure that the ends of the wires are in good contact with the edge of the

RJ45, and that the contact strip blade extends beyond the ends of the wires and is crimped with

the wires. If not, replace the connector. Figure 5-37 shows an unqualified piece.

Figure 5-37 Wires not in good contact with the edge of the RJ45

----End

Testing the Connection of Assembled Cables

Context

Huawei provides two types of Ethernet cables: straight-through cables and crossover cables.

lStraight-through cables are connected in a one-to-one manner. They are used to connect

terminals such as a computer or switch to network devices. Table 5-7 lists the connections

of core wires in a straight-through cable.

Table 5-7 Connections of core wires in a straight-through cable

RJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not

2 2 Orange Twisted

1 1 Orange-White

6 6 Green Twisted

3 3 Green-White

4 4 Blue Twisted

5 5 Blue-White

8 8 Brown Twisted

7 7 Brown-White

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lCrossover cables are connected in a crossover manner. They are used to connect terminals

such as two computers or switches. Table 5-8 lists the connections of core wires in a

crossover cable.

Table 5-8 Connections of core wires in a straight crossover cable

RJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not

6 2 Orange Twisted

3 1 Orange-White

2 6 Green Twisted

1 3 Green-White

4 4 Blue Twisted

5 5 Blue-White

8 8 Brown Twisted

7 7 Brown-White

Figure 5-38 shows the pins of an RJ45 connector.

Figure 5-38 Pins of an RJ45 connector

Pin8

Pin1

Procedure

Step 1 Feed both connectors of the cable into the ports of the cable tester.

Step 2 After the connectors are properly inserted, turn on the tester. If the indicators from 1 to G turn

on simultaneously, you can infer that the pins work normally and the wires are correctly

connected.

NOTE

Turn the switch to the S position to slow down lighting of the indicators so that you can see the indicators

more clearly, as shown in Figure 5-39.

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Figure 5-39 Testing the conduction and connections of wires

Step 3 Gently shake the connector and repeat Step 2 to check whether the metal contact strips are in

good contact with the core wires and Ethernet ports, as shown in Figure 5-40.

Figure 5-40 Checking the reliability

The procedure for testing a crossover cable is the same as that for testing a straight-through cable

except for the sequence in which the indicators turn on. You need to refer to the wire connections

of a crossover cable.

The Ethernet cable is qualified if the indicators turn on in the following sequence:

At the master (left) section of the tester, the indicators turn on in the sequence of 1-8-G. At the

slave (right) section of the tester, the indicators turn on in the sequence of 3-6-1-4-5-2-7-8-G.

Otherwise, the Ethernet cable is unqualified.

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NOTE

If a tester is not available, you can use a multimeter to perform a simple test, as shown in Figure 5-41.

Figure 5-41 Testing the connection of an Ethernet cable

----End

5.1.4 Installing Cable Accessories

Precautions for Installing Cable Accessories

Tools

NOTE

The illustrations in this document may differ from actual situations, but the installation methods remain

the same. For example, in this document, the adapters of cable connectors have separate interfaces. In the

actual situation, the adapters may have interfaces fixed on equipment.

Use dedicated tools provided or specified by Huawei and follow the installation procedure

described here.

Bending Radius

Unless otherwise specified, bending radiuses (R) of cables or fibers must meet the requirements

listed in Table 5-9.

Table 5-9 Bending radiuses of cables or fibers

Cable or Fiber Bending Radius (R)

Ordinary cable In normal cases, R ≥ 2d. When the cable is

connected with a connector, R ≥ 5d.

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Cable or Fiber Bending Radius (R)

Fiber R ≥ 40 mm (1.57 in.); Bending angle > 90°

NOTE

The letter d indicates the diameter of a cable or fiber.

Precautions for Installation

lHold the terminals of cables instead of pulling the cables when installing or removing the

cable components.

lDo not insert a connector forcibly when the connector is blocked. Pull out the connector

by using a dedicated tool. Install the connector again after you check that the pins are

inserted properly.

lBefore tightening screws on cable connectors, ensure that the connectors are properly

connected to their adapters. Tighten the screw with appropriate force using a flat-head or

Phillips screwdriver instead of bare hands or an electric screwdriver. If the screw cannot

be screwed into the tapped hole, find out the reason and try again. Do not screw it with too

much force, or the screw or adapter may be damaged.

lWhen removing densely aligned cables or fiber connectors, use dedicated pliers such as

cable-pulling pliers and fiber-pulling pliers.

lDo not twist, bend, stretch, or extrude fibers during installation.

lCover the fiber connectors that are not in use by using dustproof caps. Remove the dustproof

caps before using the fiber connectors.

Requirements for Cable Routing

lTo protect cables, remove the burrs in the cable through-holes or install protective rings in

the holes.

lTo ease the connection and to avoid stress, keep slack at cable joints. After connecting

multiple cables to a connector that has multiple interfaces, keep the cables slack to avoid

stress generation.

lBind or clean cables gently because cable distortion affects signal quality.

lKeep cables away from moveable components such as doors.

lSharp objects must not be touched in cable wiring to ensure that cables are not damaged.

lTo protect power cables, power cables of the active and standby power modules are laid

separately.

Installing Power Adapters

Installing the OT Terminal

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Procedure

lInstall an OT terminal.

1. Align the hole of the OT terminal (conductor upward) with a connecting hole, as shown

in Figure 5-42.

Figure 5-42 Aligning the OT terminal with a connecting hole

NOTE

When you install an OT terminal, the crimping sleeve is installed as shown in Figure 5-43,

where A is correct and B is wrong.

Figure 5-43 Installing an OT terminal, showing the orientation of crimping sleeve

2. Place the spring washer and flat washer in turn, mount a matching screw, and fasten

it clockwise, as shown in Figure 5-44.

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Figure 5-44 Installing two terminals back to back

NOTICE

Ensure that the OT terminal is not in contact with other terminals or metal components.

3. Move the cable slightly and ensure that it is securely connected, as shown in Figure

5-45.

Figure 5-45 Installed OT terminal

lInstall two OT terminals on a post.

Before you install two OT terminals on a post, ensure that the two terminals can be installed

on the post and that the electrical connecting pieces have a large contact area. Two OT

terminals can be installed using any of these methods:

–Bend the upper OT terminal at a 45- or 90-degree angle, as shown in Figure 5-46.

–Cross the two terminals, as shown in Figure 5-47.

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Figure 5-46 Bending the upper OT terminal at a 45- or 90-degree angle

Figure 5-47 Crossing two terminals

NOTICE

If the two terminals are different in size, place the smaller one above the bigger one. A

maximum of two terminals can be installed on a post.

lTo remove an OT terminal, loosen the screw in the counterclockwise direction.

----End

Installing the Cord End Terminal

Procedure

Step 1 Hold a cord end terminal upright and place it on a terminal jack, as shown in Figure 5-48. To

ensure bump contact and dense connection, place the plain side of the terminal outwards.

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Figure 5-48 Placing a terminal on a terminal jack vertically

Step 2 Insert the terminal into the jack vertically, and fasten the terminal by turning the matching screw

in the clockwise direction, as shown in Figure 5-49.

Figure 5-49 Feeding the terminal into the jack

NOTICE

lEnsure that the exposed section of the terminal should be less than 2 mm (0.079 in.) in length.

lDo not press the insulation of the terminal.

lInsert only one terminal into one jack.

Step 3 Move the cable slightly and ensure that it is securely connected.

Step 4 Before you remove a cord end terminal, loosen the screw in the counterclockwise direction.

----End

Installing Ethernet Adapters

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Installing a Shielded Ethernet Connector

Procedure

Step 1 Hold the male and female connectors, with the male connector facing the female connector, as

shown in Figure 5-50.

Figure 5-50 Holding the male and female shielded connectors

Step 2 Insert the male connector into the female connector, as shown in Figure 5-51.

Figure 5-51 Feeding the male shielded connector into the female shielded connector

Step 3 When you hear a click, the cable connector is completely inserted in the port. (The clip on the

cable connector pops up to fix the connector in the port.) Pull the connector slightly and ensure

that it is securely connected, as shown in Figure 5-52.

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Figure 5-52 Installed shielded Ethernet connector

Step 4 To remove an Ethernet connector, press the locking key and pull out the connector, as shown in

Figure 5-53.

Figure 5-53 Removing an shielded Ethernet connector

----End

Installing an Unshielded Ethernet Connector

Procedure

Step 1 Hold the male and female connectors, with the male connector facing the female connector, as

shown in Figure 5-54.

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Figure 5-54 Holding the male and female unshielded connectors

Step 2 Feed the male connector into the female connector, as shown in Figure 5-55.

Figure 5-55 Feeding the male connector into the female unshielded connector

Step 3 A crisp click indicates that the connector is locked by the locking key. Pull the connector slightly

and ensure that it is securely connected. Figure 5-56 shows an installed Ethernet connector.

Figure 5-56 Installed unshielded Ethernet connector

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Step 4 To remove an Ethernet connector, press the locking key and pull out the connector, as shown in

Figure 5-57.

Figure 5-57 Removing an unshielded Ethernet connector

----End

Installing Fiber Connectors

Context

NOTICE

lAfter you remove the dustproof cap, ensure that the fiber pins are clean and install them as

soon as possible.

lWhen you disassemble fiber connectors, you must use a dedicated tool if the connectors are

densely installed.

Cleaning Fiber Connectors

Procedure

Step 1 Clean the pins of a fiber connector by using lint-free cotton and alcohol.

Step 2 Clean the pins again by using dust-free cotton. If necessary, clean the pins by using an air gun.

Ensure that the pins are free from any fiber or debris.

----End

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Installing an FC Fiber Connector

Procedure

Step 1 Remove the dustproof cap of the FC connector and store it for future use.

Step 2 Align the core pin of the male connector with that of the female connector, as shown in Figure

5-58.

Figure 5-58 Aligning the male connector with the female connector

Step 3 Align the male connector with the female connector and gently push the male connector until it

is completely seated in the female connector, as shown in Figure 5-59.

Figure 5-59 Feeding the male connector into the female connector

Step 4 Fasten the locking nut in the clockwise direction and ensure that the connector is securely

installed, as shown in Figure 5-60.

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Figure 5-60 Fastening the locking nut

Step 5 To disassemble an FC fiber connector, loosen the locking nut counterclockwise, and gently pull

the male connector, as shown in Figure 5-61.

Figure 5-61 Disassembling an FC fiber connector

----End

Installing an LC Fiber Connector

Procedure

Step 1 Remove the dustproof cap of the LC fiber connector and store it for future use.

Step 2 Align the core pin of the male connector with that of the female connector, as shown in Figure

5-62.

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Figure 5-62 Aligning the male connector with the female connector

Step 3 Align the male connector with the fiber adapter and gently push the male connector until it is

completely seated in the fiber connector, as shown in Figure 5-63.

Figure 5-63 Feeding the male connector into the female connector

Step 4 A clicking sound indicates that the male connector is locked, as shown in Figure 5-64.

Figure 5-64 Installed LC connector

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Step 5 To disassemble an LC fiber connector, press the locking nut to release the locking clips from

the bore, and gently pull the male connector, as shown in Figure 5-65.

Figure 5-65 Disassembling an LC fiber connector

----End

Installing the SC Fiber Connector

Procedure

Step 1 Remove the dustproof cap of the SC fiber connector and store it for future use.

Step 2 Align the core pin of the male connector with that of the female connector, as shown in Figure

5-66.

Figure 5-66 Aligning the male connector with the female connector

Step 3 Feed the fiber connector into the female connector, with your fingers holding the shell of the

fiber connector (not the pigtail). When you hear a click, the fiber connector is secured by the

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clips (internal parts, not illustrated in the figure). Pull the fiber connector gently. If the connector

does not loosen, the installation is complete. See Figure 5-67.

Figure 5-67 Installed SC fiber connector

Step 4 To disassemble an SC fiber connector, hold the shell of the connector (do not hold the fiber) and

gently pull the connector in the direction vertical to the adapter. Unlock the male connector, and

then separate it from the shell, as shown in Figure 5-68.

Figure 5-68 Disassembling an SC fiber connector

----End

Installing an MPO Connector

Procedure

Step 1 Remove the dustproof cap of the MPO fiber connector and store it for future use.

Step 2 Align the core pin of the male connector with that of the female connector, as shown in Figure

5-69.

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Figure 5-69 Aligning the male connector with the female connector

Step 3 Hold the shell labeled "PUSH" and feed the male connector into the female connector until you

hear a clicking sound. The male and female connectors are securely installed, as shown in Figure

5-70.

Figure 5-70 Installed MPO fiber connector

Step 4 To disassemble an MPO fiber connector, hold the shell labeled "PULL" and remove the male

connector, as shown in Figure 5-71.

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Figure 5-71 Disassembling an MPO fiber connector

----End

5.1.5 Replacing the Mold of the Crimping Pliers

Procedure

Step 1 Hold the handles of a pair of COAX crimping tools. Loosen the two fastening screws in the

counterclockwise direction, as shown in Figure 5-72.

Figure 5-72 Loosening two fastening screws

Step 2 Hold the handles of the COAX crimping tools to open the self-locking mechanism. The jaw of

the COAX crimping tools opens automatically, as shown in Figure 5-73.

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Figure 5-73 Pliers jaw opening automatically

Step 3 Remove the mould from the COAX crimping tools, as shown in Figure 5-74.

Figure 5-74 Removing the mould from the COAX crimping tools

Step 4 Place the mould to be installed into the jaw of the COAX crimping tools and align the screw

holes, as shown in Figure 5-75.

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Figure 5-75 Installing a new mould in the COAX crimping tools

NOTICE

Keep the short side of the mould inwards and the long side outwards, with the teeth of the mould

aligning from the larger size to the smaller size.

Step 5 Hold the handles of the COAX crimping tools tightly to match the mould and the jaw completely.

Align the screw holes, as shown in Figure 5-76.

Figure 5-76 Aligning the screw holes

Step 6 Hold the handles of the COAX crimping tools with one hand. Tighten the two fastening screws

in the clockwise direction. Figure 5-77 and Figure 5-78shows the mould installed in the COAX

crimping tools.

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Figure 5-77 Mold installed in the COAX crimping tools

Figure 5-78 An installed mold

----End

5.2 Environmental Requirements for Device Operation

5.2.1 Environmental Requirements for an Equipment Room

Requirements for Selecting a Site for an Equipment Room

When designing a project, consider the communication network planning and technical

requirements of the equipment. Also consider hydrographic, geological, seismic, power supply,

and transportation factors.

Construction, structure, heating and ventilation, power supply, lighting and fire fighting of the

equipment room should be designed by specialized construction designers to suit the

environmental requirements of devices. The equipment room should also follow local

regulations concerning the industrial construction, environmental protection, fire fighting, and

civil air defense. Construction must conform to government standards, regulations, and other

requirements.

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The equipment room should be located at a place free from high temperature, dust, toxic gases,

explosive materials, or unstable voltage. Keep the equipment room away from significant

vibrations or strong noises, as well as power transformer stations.

The specific requirements for selecting a site for equipment room are as follows:

lThe room should be located at a distance of at least 5 km (3.11 mi.) from heavy pollution

sources such as smelting and coal mines. It should be located at a distance of at least 3.7

km (2.30 mi.) from moderate pollution sources such as chemical, rubber, and galvanization

factories. It should be located at a distance of at least 2 km (1.24 mi.) from light pollution

sources such as packinghouses and tanyards. If these pollution sources cannot be avoided,

ensure that the equipment room is upwind of the pollution sources. In addition, adopt a

high-quality equipment room or protection products.

lThe room should be located away from livestock farms, or in the upwind of the livestock

farms. Do not use an old livestock room or fertilizer warehouse as the equipment room.

lThe equipment room must be far away from the residential areas. The equipment room that

is not far away from the residential areas must comply with equipment room construction

standards to avoid noise pollution.

lThe doors and windows of the equipment room must be closed to keep an airtight room.

lUsing steel doors to ensure sound insulation is recommended.

lNo cracks or openings are allowed on the walls or floors. The outlet holes on the walls or

windows must be sealed. Walls must be constructed in the smooth, wear-resistant, dustproof

principles and produce the effect of flame retardant, sound insulation, heat absorption, dust

decrease, and electromagnetic shielding.

lThe air vent of the room should be far from the exhaust of city waste pipes, big cesspools

and sewage treatment tanks. The room should be in the positive pressure state to prevent

corrosive gases from entering the equipment room and corroding components and circuit

boards.

lThe room should be located far away from industrial and heating boilers.

lIt is recommended that the room be on or above the second floor. If this requirement cannot

be met, the ground for equipment installation in the room should be at least 600 mm (23.62

in,) above the maximum flood level.

lThe room should be at least 3.7 km (2.30 mi.) away from the seaside or salt lake. Otherwise,

the equipment room should be airtight with cooling facilities. In addition, alkalized soil

cannot be used as the construction material. Otherwise, equipment suitable for wet

conditions must be used.

lThe equipment room should be strong enough to resist winds and downpours.

lThe room should be located away from dusty roads or sand. If this is unavoidable, the doors

and windows of the equipment room must not face pollution sources.

lDo not place air conditioning vents near the equipment so that they blow directly on the

equipment because condensation may be blown into the equipment.

lDo not use decorative materials that contain sulfur in the equipment room.

Equipment Room Layout

The equipment room is usually used to install mobile switching equipment, telecom transmission

equipment and power supply equipment as well as other auxiliary equipment. To ensure easy

maintenance and management, place the telecom equipment in different rooms. Figure 5-79

shows the layout of the equipment room.

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Figure 5-79 Layout of the equipment room

Control room Generator room

Transmission

room

Main communication

equipment room

Power distribution

room Battery room

Substation room

Communication cable and optical cable

Power cable

The general layout principles of the equipment room are as follows:

lIt should meet requirements for laying out and maintaining communication cables and

power cables.

lIt should reduce the cabling distance, which eases cable maintenance, reduces potential

communication faults, and maximizes efficiency.

Construction Requirements for the Equipment Room

Table 5-10 shows the construction requirements for the equipment room.

Table 5-10 Construction requirements for the equipment room

Item Requirements

Area The smallest area of the equipment room can accommodate the equipment

with the largest capacity.

Net height The minimum height of the equipment room should not be less than 3 m

(9.84 ft). The minimum height of the equipment room is the net height

below overhead beams or ventilation pipes.

Floor The floor in the equipment room should be semi-conductive and dustproof.

A raised floor with an ESD covering is recommended. Cover the raised

floor tightly and solidly. The horizontal tolerance of each square meter

should be less than 2 mm (0.08 in.). If raised floors are unavailable, use a

static-electricity-conductive floor material, with a volume resistivity of 1.0

x 107 ohms to 1.0 x 1010 ohms. Ground this floor material or raised floor.

You can connect them to ground using a one megohm current-limiting

resistor and connection line.

Load-bearing

capacity

The floor must bear loads larger than 150 kg/m2 (0.21 bf/in.2).

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Item Requirements

Door and

windows

The door of the equipment room should be 2 m (6.56 ft) high and 1 m (3.28

ft) wide. One door is enough. Seal the doors and windows with dustproof

plastic tape. Use double-pane glass in the windows and seal them tightly.

Wall surface

treatment

Paste wallpaper on the wall or apply flat paint. Do not use pulverized paint.

Cable trays Use cable trays to arrange cables. The inner faces of the cable trays must

be smooth. The reserved length and width of the cable trays, and the number,

position and dimensions of the holes must comply with the requirements

of device arrangement.

Water pipe Do not pass service pipes, drainpipes, and storm sewers through the

equipment room. Do not place a fire hydrant in the equipment room, but

place it in the corridor or near the staircase.

Internal

partition wall

Separate the area where the equipment is installed from the equipment room

door. The partition wall can block some outside dust.

Installation

position of the

air conditioner

Install air conditioner vents so that the air does not blow directly on

equipment.

Other

requirements

Avoid the proliferation of mildew, and keep out rodents (like mice).

Figure 5-80 Internal partition wall inside the equipment room

Equipment Room Environment

Dust on devices may cause electrostatic discharge and result in poor contact for connectors or

metal connection points. This problem can shorten the life span of devices and cause faults.

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The equipment room must be free from explosive, conductive, magnetically-permeable, and

corrosive dust. Table 5-11 shows the requirement for dust concentration in the equipment room.

Table 5-11 Requirements for dust particles in the equipment room

Mechanical active

material

Unit Concentration

Dust particle Particle /m3≤ 3x 104

(no visible dust accumulated

on a workbench in three

days)

Suspending dust mg/m3≤0.2

Precipitable dust mg/m2·h ≤1.5

Description

lDust particle diameter ≥ 5 µm

lSuspending dust diameter ≤ 75 µm

l75 µm ≤ precipitable dust diameter ≤ 150 µm

Take the following measures to meet the requirements:

lUse dustproof materials for ground, wall, and ceiling construction.

lUse screens on the door and windows facing outside. The outer windows should be dust-

proof.

lClean the equipment room regularly and clean the air filter monthly.

lWear shoe covers and ESD clothes before entering the equipment room.

Requirements for Corrosive Gases

The room should be free from dusts and corrosive gases, such as SO2, H2S, and NH3. Table

5-12 shows the requirements for the corrosive gas concentration.

Table 5-12 Requirements for corrosive gas concentration

Chemical active

material Unit Concentration

SO2mg/m3≤0.20

H2Smg/m3≤0.006

NH3mg/m3≤0.05

Cl2mg/m3≤0.01

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Take the following measures to meet the requirements:

lAvoid constructing the room near a place where the corrosive gas concentration is high,

such as a chemical plant.

lEnsure the air intake vent of the room is in the prevailing upwind direction from the

pollution source.

lPlace batteries in different rooms.

lA professional service should monitor the corrosive gas conditions regularly.

Requirements for ESD Prevention

The absolute value of electrostatic voltage is less than 1000 V.

Take the following measures to meet the requirements:

lTrain operators about ESD prevention.

lKeep the correct humidity level in the equipment room to reduce the impact of static

electricity.

lLay out an ESD floor in equipment rooms.

lWear ESD shoes and clothing before entering equipment room.

lUse ESD tools, such as wrist straps, tweezers, and pullers.

lGround all conductive materials in the room, including computer terminals. Use ESD

worktables.

lKeep non-ESD materials (such as common bags, foams, and rubbers) at least 30 cm (11.81

in.) away from boards and ESD-sensitive components.

Electromagnetism Requirements for the Equipment Room

All interference sources, inside or outside the equipment room, can cause equipment problems

with capacitive coupling, inductive coupling, electromagnetic wave radiation, and common

impedance (including grounding system) coupling. Prevent the interference using these

approaches:

lTake effective measures against electrical interference from the power supply system.

lDo not use the working ground of the equipment as the same ground for surge protection.

Separate them as far as possible.

lKeep the equipment far away from strong power radio transmitters, radar units, and high-

frequency and high-current equipment.

lUse electromagnetic shielding if necessary.

Requirements for Lightning Proof Grounding

Table 5-13 shows the requirements for lightning proof grounding.

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Table 5-13 Requirements for lightning proof grounding

Item Requirements

Capital

construction

lUse the reinforced concrete structure for the construction of the

equipment room.

lInstall the lightning proof device like a lighting rod in the room.

lThe lightning proof ground shares the same grounding body with the

protection ground of the room.

Power cables

leading in the

equipment room

need to be

equipped with a

surge arrester

lAfter the low-voltage power cables are led into the room, install the

surge arrester for the power cables in the AC voltage stabilizer and the

AC power distribution panel (box). Ground the arrester nearby and

correctly.

lFor the equipment room in the city, install the power supply arrester

with the nominal discharging current no less than 20 kA. For the

equipment room built in the suburbs subject to lightning strike, install

the power supply arrester with the nominal discharging current larger

than 60 kA. For the equipment room in the mountain areas easily

subject to lightning strike, or in the separate high-rise buildings in the

city, install the power supply arrester with the nominal discharging

current larger than 100 kA.

lThe ground cable of the surge arrester should be a maximum of 1 m

(3.28 ft) long.

Grounding of DC

power

distribution

lConnect the DC working ground (positive pole of the -48 V DC power

supply or the negative pole of the 24 V DC power supply) with the

indoor collective ground cable nearby. The total ground cable should

meet the maximum load of the equipment.

lThe power equipment must have the DC working ground cable, which

can connect the power equipment to the collective ground cable of the

telecommunication site (or the protection ground bar of the equipment

room).

Equipotential

connection

lGround the devices and auxiliary devices in the room such as mobile

base station, transmission, switching equipment, power supply

equipment, and cable distribution frame properly. Connect all PGND

cables to the collective protection ground bar. Connect all PGND

cables in one equipment room to one protection ground bar.

lApply joint grounding to the working ground and protection ground

of devices, which means the two share one grounding network.

lThe cable tray, rack or shell, metal ventilation pipe, metal door or

window of the equipment should be grounded for protection.

General

requirements for

grounding

lDo not connect the neutral line of the AC power cable with the

protection ground of any telecom equipment in the equipment room.

lDo not install the fuse or switch on the ground cable.

lAll ground cables should be as short as possible, and arranged directly.

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Item Requirements

Grounding

resistance

lThe grounding resistance must be lower than 1 ohm.

lThe upper end of the grounding body should be at least 0.7 m (2.30

ft) over the ground. In cold areas, bury the grounding body below the

frozen ground.

lMeasure the grounding resistance periodically to ensure effective

grounding.

Routing of signal

cable

lDo not arrange the signal cables overhead in the equipment room. All

signal cables must be led into the site underground.

lUse the cables with metal jacket or place them into the metal pipe if

they come out/in the equipment room.

lGround the idle lines inside the cable in the equipment room.

lSignal cables should be deployed on internal walls. Do not deploy

outdoor aerial cables.

lKeep signal cables away from power cables and surge protection

devices.

Collective

ground cable

lUse the grounding ring or ground bar for the collective ground cable.

lDo not use aluminum cables as ground cables. Adopt measures to

prevent electrification corrosion when connecting different metal

parts together.

lUse the copper busbar as the collective ground cable with the cross-

sectional area not less than 120 mm2 (0.19 in.2), or use the galvanized

flat steel of the same resistance. Insulate the collective ground cable

from the reinforcing steel bars of the building.

Grounding lead-

The grounding lead-in should be a maximum of 30 m (98.42 ft) long. Use

the galvanized flat steel with cross-sectional area of 40 mm x 4 mm (1.58

in. x 0.158 in.) or 50 mm x 5 mm (1.97 in. x 0.197 in.).

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Item Requirements

Grounding of the

cabinet

lAll the devices including the surge protection device in the cabinet

must be connected in an equipotential manner. The ground cables can

be aggregated to the ground bar or surge protector socket first, and

then the ground bar or surge protector socket is connected to the

ground.

lThe resistance tested using a multimeter between the device ground

terminals and ground bar cannot exceed 0.1 ohm.

lThe cabinet can be grounded using the protecting earthing (PE) wire

of the electrical network in the building, zinc-coated angle steel, or

main steel bar of the building.

lIf the cabinet is grounded using the PE wire of the electrical network,

the grounding status can be checked using a multimeter. If the voltage

between the PE wire and neutral wire is lower than 5 V and the voltage

between the PE wire and live wire is about 220 V, the PE wire is

grounded well. If the tested AC voltages are not within the ranges, the

cabinet must be grounded in other ways.

lThe yellow-green ground cable contains multiple copper wires. The

diameter is no smaller than 6 mm2 (0.0093 in.2) and the length cannot

exceed 3 m (9.84 ft.).

lGround cables cannot be twisted with signal cables.

lAntirust and anticorrosion measures must be taken on the ground

terminals.

lThe fiber reinforcing rib can be directly connected to the ground bar

of the cabinet. Before wrapping the reinforcing rib with insulation

tape, cut a 0.5 m (1.64 ft.) segment from the reinforcing rib. Wrap the

reinforcing rib with at least five layers of insulation tape. Keep the

reinforcing rib at least 5 cm (1.969 in.) from the cabinet surface.

5.2.2 Requirements for Power Supply

Requirements for AC Power Supply

The AC power supply consists of power mains, uninterruptable power supply (UPS), and self-

supplied electric generator. In addition to meeting the requirements of the server load, the AC

power supply must have a simple connection line, safe operation, flexible scheduling, and easy

maintenance.

The low-voltage power supply should have 3-phase, 5-wire mode or monophase 3-wire mode.

This AC power supply should be 110 V/220 V, and the frequency is 50 Hz.

The UPS should supply the same power and operate at the same phase as the power mains. The

switching time between the UPS and mains should be less than 10 ms; otherwise, the networking

devices will reboot or reset.

For power distribution capacity in the equipment room, both the working current and fault current

of the devices should be considered. Ensure that independent AC power supplies protect

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independent devices. Configure the current-carrying capacity of the protection switch of the

equipment room for more than that of the devices.

Table 5-14 shows the voltage range of the AC power supply for the devices.

Table 5-14 Voltage range of AC power supply

Item Requirements

AC power capacity to support

the devices

-10% to +5% of the rated voltage

AC power capacity to support

the power modules and

important buildings

-15% to +10% of the rated voltage

Frequency of alternating

current

-4% to +4% of the rated value

Voltage wave shape sine

distortion

Within 5% of the rated voltage

The automated electric generator must have a standard interface that supports

telecommunication protocol, remote telecommunication, monitoring, and control.

AC power cables should meet the following specifications:

lAC neutral should have a conductor with the same cross section as the phase line.

lAC cables should have non-flammable insulation. The layout of AC cables should comply

with local regulations. Low-voltage power distribution rooms should comply with local

regulations.

Recommendations for AC Power Supply

The following shows recommendations for the AC power supply.

lIf the voltage of the power mains that supply power directly to devices exceeds the rated

voltage by -10% to 5%, or exceeds the voltage range that devices can support, a voltage

regulating device or voltage stabilizing device is required.

lIf the mains do not supply power for the device directly, or if the mains voltage exceeds

the rated voltage by -15% to 10% or exceeds the input voltage range of the DC power

supply, a voltage regulating device or voltage stabilizing device is required.

lAn UPS or inverter power supply system is required to provide uninterrupted AC power

to support the telecommunication load.

lIf abnormalities occur on the mains, telecommunication servers should be equipped with

a self-supplied electric generator to support the key telecommunication load. The capacity

should be not less than 150% to 200% of the total uninterruptable power supply.

lStorage batteries are usually installed in a parallel connection of two groups. UPS storage

batteries are generally installed in one group. The redundancy required for the UPS can

rely on concatenation or parallel connection. When an inverter or a UPS is used, the active

inverter is determined by the maximum power and a backup inverter is required.

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Requirements for DC Power Supply

The equipment room should receive stable and reliable DC power. Deploy the power equipment

near the telecommunications equipment to make the DC feeder as short as possible. To reduce

power consumption and installation cost, the loop voltage drop from the battery port to the

equipment port should be less than 3.2 V.

lA large-scale enterprise can deploy an independent power supply system on each floor to

supply power to the telecommunications equipment room on the respective floor.

lA medium-scale enterprise can use a power room and a battery room for centralized power

supply or use distributed power supply systems.

lA small-scale enterprise can deploy an integrated power supply system in its equipment

room but must take measures to prevent corrosive gases released from batteries from

eroding circuit boards of telecommunications equipment.

Table 5-15 shows the specifications for the DC power supply.

Table 5-15 Specifications for the DC power supply

Item Requirements

DC power

capacity to

support the surge

current

Greater than 1.5 times the rated current

Regulated

voltage precision

If the AC input voltage is in the range of 85% to 110% of the rated value,

and the load current is in the range of 5% to 100% of the rated value, the

output voltage of the rectifier ranges from -46.0 V to -56.4 V, with the

regulated voltage precision less than or equal to 1%.

Overshoot

amplitude of

switch on/off

Integral value of the DC output voltage ±5%

Peak noise

voltage

≤200 mV

Dynamic

response

The recovery time is less than 200 ms. The overshoot is in the range of

the integral value of the DC output voltage ±5%.

Recommendations for DC Power Supply

The following shows recommendations for the DC power supply.

lUse distributed power supply mode. Use multiple DC power supply systems and put power

equipment in multiple locations.

lAdopt a standard DC power supply system, and set the output voltage to the

communications equipment within the required range.

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lImproving the reliability of the AC power supply system reduces the necessary capacity of

storage batteries. For small offices, increase the capacity of storage batteries if it is difficult

to enhance the reliability of the AC power supply system.

lThe total capacity of the high-frequency switching rectifier must satisfy the power of the

communication loading and battery charging. If there are 10 or fewer active rectifier

modules, configure one backup module. If there are more than 10 active modules, configure

one backup module for every 10 active modules.

lInstall storage batteries in two or more groups. The capacity is determined by the duration

for which the storage batteries must supply power. For most offices, the batteries should

be able to supply power for at least one hour.

5.3 Equipment Grounding Specifications

5.3.1 General Grounding Specifications

Table 5-16 shows the general grounding specifications.

Table 5-16 General grounding specifications

No. Description

1The working grounding and protection grounding, including the shielded grounding

and the lightning-proof grounding of the cable distribution frame should share the

same grounding conductor.

2 The cable trays, shells, metal ventilation pipes, metal doors and windows in the

equipment room should be grounded for protection.

3 The metal parts of the equipment which are electrically floating in normal conditions

should be grounded for protection.

4 The ground cable must be connected securely to the protection ground bar of the

equipment room.

5 Do not use other equipment as part of the ground cable or electrical connection.

5.3.2 Grounding Specifications for an Equipment Room

The grounding resistance of a comprehensive communication building should be less than or

equal to one ohm. The grounding resistance of an ordinary communication office should be less

than five ohms. The grounding resistance in an area where the earth resistance rate is high should

be less than 10 ohms.

5.3.3 Grounding Specifications for Devices

Table 5-17 shows the equipment grounding specifications.

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Table 5-17 Equipment Grounding Specifications

No. Description

1All communication devices and auxiliary devices (such as mobile base stations,

transmission and switching devices, power supply devices) in the equipment room

should be grounded for protection. Connect all protection grounding for various

devices jointly to a general ground bar, and then to the same protection ground bar

in the room together with the protection ground (PGND) of the device.

2 The PGND of the equipment is shorted to the copper protection ground bar provided

by the user. The short-circuiting cable used should be an alternating yellow and green

plastic insulating one with copper core, with cross-sectional area greater than 25 sq.

mm (0.039 sq. in.).

3 There are grounding terminals and grounding lugs at the lower part of the front door,

rear door and side panel of the cabinet, connected to the grounding terminals of the

cabinet framework through connection cables with cross-sectional area no less than

1.6 sq. mm (0.002 sq. in.).

4 Ensure that all metal components of the cabinet conduct well. No insulating coating

should be sprayed on the connection part of the metal components.

5 Connect the cabinets in the same row by fastening captive screws and gaskets on the

top of the cabinets. Do not spray any coating into a rectangular area measuring 30

mm x 50 mm (1.18 in. x 1.97 in.) around the connection hole for a captive bolt.

Measures to prevent rust and corrosion must be taken for this area. Zinc electroplating

with iridescent yellow chromate conversion coating should be applied to the gasket

and nut to ensure good electrical contact.

6 When combining cabinets of the same type, short-circuiting cables are required to

connect the ground busbars (if any) of the cabinets. The cross-sectional area of the

short-circuiting cable is 6 sq. mm (0.009 sq. in.) and is no more than 300 mm (11.8

in.) long. Connect the two ends of the short-circuiting cable to the ground busbar

terminals of neighboring cabinets and fix them firmly.

5.3.4 Grounding Specifications for Communications Power Supply

Table 5-18 shows the grounding specifications for communication power supplies.

Table 5-18 Grounding specifications for communication power supplies

No. Description

1The inlet for the AC power cable at the equipment room should be equipped with a

surge protection device (C-level) with a nominal discharge current no less than 20

kA.

2 The protection ground for the power supply and that for communication equipment

share the same grounding conductor. If the power supply and the equipment are in

the same equipment room, use the same protection ground bar for them if possible.

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No. Description

3Use a surge protection circuit on the AC power interface.

4 The positive of the -48 V DC power supply or negative pole of the 24 V DC power

supply should be grounded at the output of the DC power supply.

5 The working ground and protection ground of the DC power supply equipment should

use the same grounding conductor with the protection ground of the switching

equipment. If the power supply and equipment are in the same equipment room, use

the same protection ground bar for them if possible.

6 Add surge protection on the DC power interface.

5.3.5 Grounding Specifications for Signal Cables

Grounding specifications for signal cables are shown in Table 5-19.

Table 5-19 Grounding specifications for signal cables

No. Description

1Equip the cable outdoors with a metal jacket, well grounded at both ends, or connect

the ends of the metal jacket to the protection ground bar of the equipment room. For

cables inside the equipment room, install surge protection devices at the interface to

the equipment. The PGND cable for the surge protection devices should be as short

as possible.

2 The incoming and outgoing signal cables to and from the office and unused wires

inside the cable should be grounded for protection.

3 The Tone & Data Access (TDA) cable must pass through the Main Distribution

Frame (MDF) with surge protective device (SPD) when going out of the office. The

cable's shield layer should be connected to the protection ground of the MDF. The

MDF should use the same grounding conductor with the cabinet.

4 The signal cables should not be routed overhead.

5.3.6 Specifications for Laying Out Grounding Cables

Table 5-20 shows the specifications for the ground cable.

Table 5-20 Specifications for laying out ground cables

No. Description

1The grounding wire should not run parallel to or twist around the signal cable.

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No. Description

2The ground cable cannot be routed overhead, but should be buried in the earth or

arranged indoors.

3 Do not connect two cables together to extend the PGND cable, or add any switch or

fuse.

4 The PGND cable should be an alternating yellow and green plastic insulating one

with copper core.

5 The neutral line of the AC power cable cannot be connected to the protection ground

of transmission and communication equipment in the equipment room.

6 The length of the PGND cable should not exceed 45 m (147.64 ft). The PGND cable

should be as short as possible.

5.4 Engineering Labels for Cables

An engineering label serves as an identifier for on-site installation and maintenance after the

installation. Labels on the cables facilitate correct and orderly connection of cables, and easy

maintenance after installation.

Specialized for power cables and signal cables, the types of engineering labels are as follows:

lThe signal cables include network cables, optical fibers, and user cables.

lThe power cables include the AC power cables and DC power cables.

NOTE

Fill in the label according to the user's requirements if the user needs an integrated description of the label.

Make a relevant statement in the self-check report.

5.4.1 Introduction to Labels

Label Materials

Features:

lThickness: 0.09 mm (0.004 in.)

lColor: chalk white

lMaterial: polyester (PET)

lAmbient temperature: -29°C (-20.2°F) to +149°C (300.2°F)

lCompatible with laser printing and handwriting with markers

lPass UL and CSA authentication

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Type and Structure

Label for Signal Cables

The label for signal cables is L-shaped with fixed dimensions, as shown in Figure 5-81.

Figure 5-81 Label for signal cables

To specify more clearly the position of a cable, use the dividing lines on the label. For example,

there is a dividing line between the cabinet number and the chassis number, and another one

between the chassis number and the slot number. The dividing line is 1.5 mm x 0.6 mm (0.06

in. x 0.02 in.) with the color of Pantone 656c (light blue).

The cut dotted line helps to fold the label when affixed to the cable, and its size is 1 mm x 2 mm

(0.04 in. x 0.08 in.).

There is a mark "TO:" (upside down in the figure) at the lower right corner of the label. The

mark is used to identify the opposite end of the cable on which the label is affixed.

Power Cable Label

The label for power cables should be attached to the identification plate on the cable ties that

are attached to the cable. The identification plate has an embossed area 0.2 mm x 0.6 mm (0.008

in. x 0.02 in.) around (symmetric on both sides), and the area in the middle is for affixing the

label, as shown in Figure 5-82.

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Figure 5-82 Power cable label

Label Printing

The contents can be printed or written on the labels. Printing is recommended for the sake of

high efficiency and eye-pleasant layout.

Template for Printing

Use a template to print labels. You can obtain the template from the Huawei local office.

The templates are made in Microsoft Word and the following requirements should be met:

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lWhen using the template, you can directly modify the contents of the template. The settings

of centered characters, direction, and fonts should not be changed.

lWhen there are too many characters to be filled in, zoom out the characters, but make sure

that the printouts are clear and legible.

Merging Cells in the Template

To merge two or more cells, do as follows:

1. Select Edit/Select All.

2. Select Format/Borders and Shading/Borders. Select Box tab and click OK.

3. Drag the mouse to select cells to be merged and select the Table/Merge Cells.

Requirements on the Printer

To print the labels, a laser jet printer must be used, although there is no restriction on the model

of the printer. Before printing the label, set up the page and try printing.

1. Try printing on ordinary paper with both sides blank. Place the blank paper over the whole

page of label paper, and check whether the page setup conforms to the label layout.

2. Make sure the printer properties, such as "paper size" and "direction", have been set

correctly.

lIf the printout conforms to the sheet of labels, print the labels on the label paper.

lIf the printout does not conform, adjust the page setup and try printing again until the

correct printout is produced.

The method of adjusting the page setup is as follows.

1. Select File/Page Setup.

2. Select Layout and set Header and Footer as 0.

3. Select the Margins tab page. Select Left for Gutter Position and adjust the values of Top,

Bottom, Left, and Right.

NOTE

If the warning prompt as shown in Figure 5-83 appears before printing, click Ignore to continue the

printing.

Figure 5-83 Warning prompt before printing

After the page setup has been made correctly, save it for future use. This page setup is only

necessary the first time you use the template to print the labels.

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Requirements for Feeding the Printer

The label paper consists of two layers and has undergone multiple processing procedures such

as printing and cutting. No matter what model of printer you use, feed in the labels one page at

a time. To avoid jamming the labels, never use the auto-feed mode.

Feed in the label paper in the correct direction to ensure that the text is printed in a correct

position.

Requirements for the Printed Label

Make sure that the printed labels satisfy the following requirements:

lAll the printouts must be on the label, and nothing should be printed on the backing layer

of the label page.

lContents in the cells should be aligned in the center. In a single-line printout, the dividing

lines and the mark "TO:" should not be covered by the printed characters.

lWhen the cells are merged and the printouts are made in multiple lines, avoid covering the

mark "TO:" when printing the texts. Use the space bar to move the text to the next line.

Writing Labels

Writing Tools

To make sure the printouts are clear and legible, use the black markers instead of ball-point pens

to write the labels.

In special cases, black ball-pens are allowed, although not recommended. Compared with ball-

point pens, water-proof markers are better. When writing with a ball-point pen, do not leave the

oil on the label, which may contaminate the label and blur the words.

NOTE

The delivered marker has two nibs. Make sure to use the smaller nib to write the labels.

Font

For the sake of easy recognition and good appearance, the font in handwriting should be as close

to a standard typeface (such as Times New Roman) as possible. Table 5-21 shows the standard

typeface.

Table 5-21 Standard typeface for handwriting

012345678

9 A B C D E F G H

I J K L M N O P Q

R S T U V W X Y Z

Determine the size of characters based on the number of letters or digits and ensure that the

characters are clear, distinct, and tidy.

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Writing direction: The direction is shown in Figure 5-84:

Figure 5-84 Writing direction of the characters on the label

Attaching Labels

After printing or writing the label, remove the label from the page and attach it to the signal

cable, or the identification plate of the power cable. The methods for attaching labels are

described in the following sections.

Label for Signal Cables

lChoose the place to attach labels.

The label is attached 2 cm (0.79 in.) from the connector on a signal cable. In special cases

(for example, to avoid cable bending or affecting other cables), other positions are allowed

to attach the labels. The rectangle part with characters is attached facing right or downward,

as shown in Figure 5-85. The details are as follows:

–The identification card is to the right of the cable in vertical cabling.

–The identification card should be downward when you lay out the cable horizontally.

Figure 5-85 Text area of the label

lProcedure for attaching labels

Figure 5-86 shows the methods and procedures for attaching labels.

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Figure 5-86 Label for signal cables

Power Cable Label

Remove the label from the backing page, and attach it to the identification plate on the cable tie.

The label should be attached to the rectangular flute on the identification plate, and attached to

only one side of the identification plate. The cable ties are bundled at 2 cm (0.79 in.) from the

connectors, and other positions are allowed in special circumstances.

Cable ties should be bound on both ends of a cable. After the bundling, the finished identification

plate should be on top of the cable in horizontal cabling, or on the right side of the cable in

vertical cabling, as shown in Figure 5-87. The details are as follows:

lThe identification card is to the right of the cable in vertical cabling.

lThe identification card is on the top of the cable in horizontal cabling. Make sure that the

label is facing out.

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Figure 5-87 Binding the label for the power cable

The identification card is on the

top of the cable in horizontal

cabling.

The identification card is to

the right of the cable in

vertical cabling.

TO:

B03 -48V2

TO:

B03 -48V2

Cable

Contents of Engineering Labels

Contents of Labels for Power Cables

Labels for power cables are only affixed on one side of the identification plates. On the labels,

there is information (the part after the mark "TO:") about the location of the device on the other

end of the cable, like the location of control cabinet, distribution box or power socket.

Contents of Labels for Signal Cables

The two sides of the label affixed on the signal cable carry information about the location of the

ports connected to both ends of the cable. Figure 5-88 shows the information on both sides of

the labels affixed to the signal cables.

lArea 1 contains the location information of the local end of the cable.

lArea 2 (with the mark "TO:") contains the location information of the opposite end of the

cable.

lArea 3 has been folded up inside the label.

Figure 5-88 Printed parts on the label for signal cables

Seen from the cabling end of the equipment, the text part of the label is on the right side of the

cable. The side with "TO:" that is facing outside carries the location information of the opposite

end; and the other side carries the location information of the local end.

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Therefore, the information in Area 1 at one end is the same as the information in Area 2 at the

other end of the cable. In other words, the local information at one end is called the opposite

information at the other end.

Precautions for Using Engineering Labels

When using labels, pay attention to the following points:

lWhen printing, writing, or attaching labels, keep the labels clean.

lSince the label paper is made of moistureproof and waterproof material, ink-jet printers

and ink pens are forbidden for printing and writing labels.

lLabels should be attached tidily. New-type labels are L-shaped. If they are pasted at

incorrect locations or in wrong directions, the appearance of the device is affected.

lPower cable ties should be attached in the same positions on power cables, with

identification plates on the same side.

lThe positions of "up", "down", "left" or "right" are all based on the viewpoint of the

engineering person who works on the label.

5.4.2 Engineering Labels for Optical Fibers

These labels are affixed to the optical fibers that connect the optical interfaces on the boards in

a chassis, or on the device boxes. There are two types of labels for optical cables:

lOne is for the fiber that connects the optical interfaces on two devices.

lThe other is for the fiber that connects the device and the ODF.

Labels for the Optical Fibers Connecting Devices

Meaning of the Label

Table 5-22 lists information on both sides of the labels affixed to the optical fibers that connect

two devices.

Table 5-22 Information on labels affixed to the fiber between two devices

Content Meaning Example

MN-B-C-D-

R/T

MN: cabinet

number

M: The cabinet rows from front to back are numbered

from A to Z.

N: The cabinet columns from left to right are numbered

from 01 to 99.

For example, A01 is the cabinet in Row A and Column

01.

B: chassis

number

Numbered in bottom-up order with two digits, for

example, 01.

C: physical slot

number

Numbered in the top-down and left-right order starting

from 01. For example, 01 is the slot with number 1.

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Content Meaning Example

D: optical

interface

number.

Numbered in a top-bottom and left-right order, consistent

with the port sequence number on the device.

R: Receiving

interface

T: optical

transmitting

interface

Example of the Label

Figure 5-89 shows the label on the cable.

Figure 5-89 Example of the label on the optical fiber between two devices

A01 R

TO:

01 05 01

G01 T

01 01 01

The meaning of the labels is listed in Figure 5-89.

l"A01-01-05-01-R" indicates that the local end of the optical fiber is connected with the

optical receiving interface 01 on slot 5, chassis 01 in the cabinet on row A, column 01 in

the machine room.

l"G01-01-01-01-T" indicates that the opposite end of the optical fiber is connected with

Optical Transmitting Interface 01 on Slot 01, Chassis 01 in the cabinet on Row G, Column

01 in the machine room.

Labels for the Optical Fibers Connecting the Device and an ODF

Meaning of the Labels

Table 5-23 shows the information on both sides of the labels attached to the optical fiber that

connects the device and the ODF.

Table 5-23 Information on labels affixed to the fiber between the device and the ODF

Content Meaning Example

MN-B-C-D-

R/T

MN: cabinet

number

For example, A01.

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Content Meaning Example

B: chassis

number

Numbered in bottom-up order with two digits, for

example, 01.

C: physical slot

number

Numbered in the top-down and left-right order starting

from 01. For example, 01 is the slot with number 1.

D: optical

interface

number.

Numbered in a top-down and left-right order, consistent

with the port sequence number on the device.

R: Optical

receiving

interface

T: optical

transmitting

interface

ODF-MN-B-

C-R/T

MN: row number

and column

number of an

ODF

M: The cabinet rows from front to back are numbered

from A to Z.

N: The cabinet columns from left to right are numbered

from 01 to 99.

For example, G01 is the ODF of Row G and Column 01.

B: row number of

the terminal

device

Range from 01 to 99, for example, 01-01.

C: column

number of the

terminal device

R: Optical

receiving

interface

T: optical

transmitting

interface

Example of the Label

Figure 5-90 shows the label on the cable.

Figure 5-90 Example of the label on the optical fiber between the device and the ODF

ODF R

TO:

G01 01 01

A01 R

01 05 01

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Meaning of the label in Figure 5-90

l"ODF-G01-01-01-R" indicates that the local end of the optical fiber is connected to the

optical receiving terminal on row 01, column 01 of the ODF in row G, column 01 in the

machine room.

l"A01-01-05-01-R" indicates that the opposite end of the optical fiber is connected to Optical

Receiving Interface 1 on Slot 05, chassis 01 in the cabinet on Row A, Column 01 in the

machine room.

5.4.3 Engineering Labels for Network Cables

Applicable Ranges

The labels can be applied to Ethernet cables.

Label Content

Table 5-24 shows the information on both sides of the labels affixed to Ethernet cables.

You can also decide the label content according to the actual environment. If the device is not

installed in the cabinet, for example, you can remove the cabinet number.

Table 5-24 Information on the Ethernet cables

Content Meaning Example

MN-B-C-D MN: cabinet

number

For example, A01 is the first cabinet in row A.

B: chassis number Numbered in the bottom-up order with two digits, for

example, 01.

C: physical slot

number

Numbered with two digits in top-down and left-right

order. For example, 01.

D: network port

number

Numbered in the top-down and left-right orders. For

example, 01.

MN-Z MN: cabinet

number

For example, B02 is the second cabinet in Row B.

Z: Location

number

Fill in the location number of the terminal device on

site. If the cable is connected to a device in a cabinet,

the serial numbers of the cabinet, the chassis, and the

Ethernet interface of the device should be specified.

For example, B02-03-12. If the cable is connected to

the Network Management Station (NMS), the

specific location of the NMS should be given.

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The contents of the labels for network cables connecting hubs and devices or agents and the

network cables for other purposes should be specified according to actual connections. The

details are as follows:

lFor a network cable connecting a hub and device, the label on the hub end should indicate

the numbers of the chassis and cabinet where the hub resides, and the serial number on the

hub. The label on the device end should indicate the number of the chassis and cabinet

where the device is located. If the device is a stand-alone device, the specific position of

the device should be provided.

lFor a network cable connecting a hub and an agent or terminal, the label on the agent or

terminal end should contain the serial number of the network interface. The definitions of

the cabinet number and chassis number are the same as those described in Table 5-24.

lIf the hub is a stand-alone device without cabinet or chassis, the label should contain specific

location information that identifies the hub.

The serial number on the hub, the network interface number of the agent or terminal, and the

location of the stand-alone device should be specified according to actual connections.

Label Example

Figure 5-91 shows the label on the cable.

Figure 5-91 Example of the label on network cables

A01

TO:

03 01 01

B02 03 01

Meaning of the label in Figure 5-91.

l"A01-03-01-01" indicates that one end of the network cable is connected to network

interface 01 of slot 01, chassis 03 of the cabinet on row A, column 01 in the equipment

room.

l"B02-03-01" indicates that another end of the network cable is connected to network

interface 01, chassis 03 of the cabinet on row B, column 02 in the equipment room. No slot

number is given.

5.4.4 Engineering Labels for User Cables

Attach labels to both ends of the cable to indicate the locations of the cable on the device and

MDF.

Meaning of the Engineering Labels for User Cables

Table 5-25 shows the contents of the labels.

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Table 5-25 Contents of the engineering labels for user cables

Content Meaning Example

MN-B-C-D MN: cabinet

number

For example, A01 is the first cabinet in row A.

B: frame number Numbered in the bottom-up order with two digits, for

example, 03.

C: physical slot

number

Numbered with two digits in the top-down and left-

right order. For example, 01.

D: cable number Numbered with two digits in the top-down and left-

right order. For example, 01.

MDF-MN-B-C MN: row number

and column

number of the

MDF

M: The rows of cabinets from front to back are

numbered from A to Z. N: The columns of cabinets

from left to right are numbered from 01 to 99. For

example, G01 is the MDF of row G and column 01.

B: row number of

the terminal device

Ranges from 01 to 99, for example, 01-01.

C: column number

of the terminal

device

Example of the Label

Figure 5-92 shows an example.

Figure 5-92 Example of labels for user cables

A01

TO:

03 01 01

MDF G01 01 01

The meaning of the label in Figure 5-92 is as follows:

l"A01-03-01-01" indicates that the local end of the user cable is connected to port 1 of on

slot 1, chassis 03 of the cabinet on row A, column 01 in the equipment room.

l"MDF-G01-01-01" indicates that the opposite end of the user cable is connected to the

terminal on row 01, column 01 of the MDF in row G, column 01 in the equipment room.

5.4.5 Engineering Labels for Power Cables

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Engineering Labels for DC Power Cables

The labels are affixed to the DC power cables that provide power supply for cabinets, including

the -48 V, PGND, and BGND cables. Here, the DC power cables also include power cables and

PGND cables.

The labels for DC power cables are affixed to one side of the identification plates on cable ties.

For details of the labels, see Table 5-26.

Table 5-26 Contents of the label

Content Meaning

MN(BC)-

B--48Vn

MN(BC): BC is written right under MN.

B: chassis number, numbered in the bottom-up order with two digits, for

example, 01.

N: power socket number, numbered as 1 to 3 in the bottom-up and left-

to-right orders.

On the loaded cabinet side, only MN is used to identify the cabinet.

On the power cabinet side, MN identifies the row and column number

of the power distribution equipment like a control cabinet and

distribution box, and BC identifies the row and column number of the

-48 V connector. If there is no row number or column number, or the

connector can be identified without them, BC can be omitted. It is

unnecessary for BGND and PGND to identify the row and column

number.

MN(BC)-B-

BGND

MN(BC)-B-

PGND

The label only carries location information about the destination direction of the power cable

while information of the local end is not necessary. That is, the label only carries location

information about the opposite equipment, the control cabinet, or the distribution box. Table

5-26 lists the information on two -48 V power supplies on the label. The information on other

DC voltages, such as 24 V and 60 V should be given in similar methods.

Make sure that labels are affixed in the correction direction. That is, after the cable ties are

bundled onto the cable, the identification plates with the labels should face up, and the text on

the labels in the same cabinet should be in the same direction. For details, see Figure 5-93.

Figure 5-93 Example of the labels for DC power cables

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The meaning of the label in Figure 5-93 is as follows:

lOn the loaded cabinet side, the label "A01/B08--48V2" on the cable indicates that the cable

is -48 V DC supply, which is from the eighth connector on row B of -48 V bus bar in the

cabinet on row A, and column 1 in the equipment room.

lOn the distribution box side, the label "B03--48V2" indicates that the cable is -48 V DC

supply, connected to DC power socket 2 on row B, column 03 in the equipment room.

NOTE

In the power distribution box or the first power cabinet of a row in a transmission equipment room, every

terminal block on the -48 V connector bar has a numeric identification. For example, in the above label of

"A01/B08--48V2", "08" (or sometimes "8") is the numeric identification of the terminal block.

PGND and BGND are two copper bars, on which the terminal blocks are short-circuited,

therefore which terminal is connected makes no difference. It is only necessary to give the row

and column of the power distribution box, instead of giving the specific serial number of the

terminal block on the copper bar. For example, if the label on the loaded cabinet side is "A01-

BGND", it means that the power cable is a BGND that connects BGND copper bar in the power

distribution box on Row A, Column 01 in the machine room. Information on the labels for PGND

cables should be given in a similar way.

Engineering Labels for AC Power Cables

The labels are affixed to both ends of an AC power cable that provides AC power supply to

cabinets, including 110/220 V, PGND, and BGND cables. The 110/220 V AC cables and related

PGND and BGND cables are covered with an insulating sheath, so the labels need to contain

only the word "AC" and the cabinet numbers.

The labels for AC power cables are affixed to one side of the identification plates on cable ties.

For details, see Table 5-27.

Table 5-27 Label content

Content Meaning

MN-(B)-ACn MN: serial number of the cabinet or the socket where the power is led in

B: chassis number, numbered in the bottom-up order with two digits, for

example, 01.

n: power port number, numbered as 1 to 3 in bottom-up and left-to-right

order.

Serial number of the socket where the power is led in: the location of the

socket is marked according to the actual situation. If the sockets can be

identified by row numbers and column numbers, they can be numbered

following the same rule for the cabinets. If the sockets cannot be identified

by rows and columns, specify the detailed locations to avoid confusion

with other sockets.

The label only carries location information about the opposite equipment and the power socket;

information about the local end is not necessary.

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Make sure that labels are affixed in correct direction. That is, after the cable ties are bundled

onto the cable, the identification plates with the labels should face up, and the text on the labels

in the same cabinet should be in the same direction, as shown in Figure 5-94.

Figure 5-94 Labels for AC power cables

Label on the loaded cabinet side

(indicating the position of the cable

on the power distribution box)

Label on the distribution box side

(indicating the position of the cable

on the loaded cabinet side)

Meaning of the label in Figure 5-94.

lOn the equipment cabinet side, the label marked with "A01-AC1" indicates that the power

cable is connected to the first AC power socket of Row A and Column 01 in the equipment

room.

lOn the power socket side, the label marked with "B01-AC1" indicates that the power cable

is connected to the first AC power socket in the cabinet of Row B and Column 01 in the

equipment room.

5.5 Guide to Using Optical Modules

Common Faults of an Optical Module

1. An optical module is not completely installed in position.

If the optical module is not completely installed in position and the latch boss is not secured,

the device cannot identify the optical module. After the optical module works for a long

time, it will be ejected under external stress.

2. The optical receptacle on an optical module is contaminated.

If an optical module is not cleaned or protected properly, contaminants may accumulate on

the fiber pin in the optical module. As a result, the coupling efficiency is reduced, optical

signals are cut off, or even worse, the surface of the fiber pin is damaged permanently.

3. An optical module is burnt.

If large-power optical signals (caused by the OTDR or self-loop test) are transmitted

through an optical module that is used for long-distance transmission but no optical

attenuator is used, the optical power will exceed the overload power of the APD pipe. Then

the optical module is burnt.

The preceding faults lead to temporary or long-term cut-off of optical signals; or even cause

permanent damages to the optical module, affecting communication services.

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Measures to Prevent Loosened Optical Module

1. When installing an optical module, insert it into position. If you hear a click or feel a slight

shake, it indicates that the latch boss is secured.

If the latch boss is not secured, the gold finger of the optical module is not in good contact

with the connector on the board. In this case, the link may be connected but optical signals

will be cut off or the optical module will be loosened when the optical module is shook or

crashed.

2. Figure 5-95 shows the release handle on an optical module when it is open and closed.

When inserting the optical module, make sure that the release handle is closed. At this time,

the latch boss locks the optical module. After the optical module is inserted, try pulling it

out to see if it is installed in position. If the optical module cannot be pulled out, it is secured.

Figure 5-95 State of the release handle

Close the release handle Open the release handle

Measures to Prevent Receptacle Contamination

1. Cleaning tissues must be prepared on site. You need to clean the optical connector before

inserting it in the receptacle. This protects the receptacle against the contamination on the

surface of the optical connector.

Figure 5-96 Cleaning optical fibers with special cleaning tissues

NOTE

Place at least three cleaning tissues on the work bench. As shown in Figure 5-96, wipe the end of an

optical connector from left to right or from right to left on a cleaning tissue, and then move the

connector end to the unused part of the cleaning tissue to continue.

2. Cover an unused optical module with a protective cap to prevent dust, as shown in Figure

5-97.

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Figure 5-97 Installing a protective cap

If no protective cap is available, use fibers to protect the optical module, as shown in Figure

5-98.

Figure 5-98 Using fibers to protect an optical module

3. Cover unused optical connectors with protective caps, as shown in Figure 5-99, and then

lay out fibers on the fiber rack or coil them in a fiber management tray to prevent fibers

from being squeezed.

Figure 5-99 Installing a protective cap on a fiber

4. If a receptacle or an optical connector has not been used for a long time and is not covered

with a protective cap, you need to clean it before using it. Clean a receptacle with a cotton

swab, as shown in Figure 5-100. Clean an optical connector with cleaning tissues.

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Figure 5-100 Cleaning a receptacle with a cotton swab

NOTICE

When cleaning a receptacle, insert the cotton swab and turn it slowly in the receptacle. Do

not use too much strength because the receptacle may be damaged.

5. If optical signals are lost during the operation of a device, use the preceding method to

clean the receptacle or the optical connector. In this manner, the possibility of contamination

can be excluded.

Measures to Prevent an Optical Module from Being Burnt

1. Before using an optical time-domain reflectometer (OTDR) to test the connectivity or the

attenuation of optical signals, disconnect the optical fibers from the optical module.

Otherwise, the optical module will be burnt.

2. When performing a self-loop test, use an optical attenuator. Do not loosen the optical

connector instead of the optical attenuator.

Precautions

1. The optical connector should be vertically inserted in the receptacle to avoid damages to

the receptacle.

2. Fibers must be inserted into optical modules of the corresponding type. That is, multimode

fibers must be inserted into multimode optical modules, and single mode fibers must be

inserted into single mode optical modules. If a fiber is inserted into an optical module of a

different mode, faults may occur. For example, optical signals will be lost.

5.6 Fault Tag

*Customer name:

Address:

Contact person:

Tel.: Fax:

Category*: □ RMA □ Return □ Analysis

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BOM

Code

Product

Description

Bar

Code*

Fault

Occurring

Date*

Description

of the Fault

Phenomena*

Huawei Technologies AP8130DN Outdoor Wireless LAN Access Point User Manual Hardware Installation and Maintenance Guide

Huawei Technologies Co.,Ltd Outdoor Wireless LAN Access Point Hardware Installation and Maintenance Guide

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