Huawei AP6050DN6150DN Users Guide

AP6050DN & AP6150DN
Hardware Installation and Maintenance Guide
Issue 03
Date 2016-09-30
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang Shenzhen 518129 People's Republic of China
Website: http://www.huawei.com
Email: support@huawei.com
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AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Intended Audience
This document describes hardware features of the AP6050DN and AP6150DN and provides basic installation methods.
This document is intended for:
l Network planning engineers

About This Document

About This Document
l Hardware installation engineers
l Commissioning engineers
l Onsite maintenance engineers
l System 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.
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NOTE
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Symbol Description
Change History
Changes between document issues are cumulative. The latest document issue contains all changes made in previous issues.
Issue 03 (2016-09-30)
This version has the following updates:
About This Document
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.
The following information is modified:
l 1.1 Device Structure
l 2.6 Cable Connection
Issue 02 (2016-07-22)
This version has the following updates:
The following information is modified:
l 1.4 Ordering Information
Issue 01 (2016-05-31)
Initial commercial release
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AP6050DN & AP6150DN Hardware Installation and Maintenance Guide Contents

Contents

About This Document.....................................................................................................................ii
1 Product Overview..........................................................................................................................1
1.1 Device Structure............................................................................................................................................................. 2
1.2 Indicator Description...................................................................................................................................................... 3
1.3 Basic Specifications........................................................................................................................................................5
1.4 Ordering Information......................................................................................................................................................6
2 AP Installation............................................................................................................................... 7
2.1 Preparing for Installation................................................................................................................................................ 8
2.2 Installation Flowchart..................................................................................................................................................... 9
2.3 Unpacking the Equipment............................................................................................................................................ 10
2.4 Determining the Installation Position........................................................................................................................... 11
2.5 Installing the AP........................................................................................................................................................... 12
2.5.1 Installing the Device on a Wall..................................................................................................................................12
2.5.2 Installing the device on a Ceiling.............................................................................................................................. 13
2.5.3 Installing the device on a T-rail................................................................................................................................. 14
2.6 Cable Connection......................................................................................................................................................... 16
2.7 Connecting the Security Lock...................................................................................................................................... 18
2.8 Checking the Device After Installation........................................................................................................................ 18
2.9 Powering on the AP......................................................................................................................................................19
3 Logging In to the Device............................................................................................................ 20
3.1 Logging In to the Device Using STelnet/Telnet........................................................................................................... 21
3.2 Logging In to the Device Through the Web System (Applicable to the Fat AP Only)................................................ 22
3.3 Logging In to the Device Through the Console Port....................................................................................................22
4 Hardware Failures....................................................................................................................... 24
4.1 A Device Fails to Be Powered On................................................................................................................................25
5 Appendix.......................................................................................................................................27
5.1 On-site Cable Assembly and Installation..................................................................................................................... 28
5.1.1 Cable Assembly Precautions..................................................................................................................................... 28
5.1.2 Assembling Power Cables......................................................................................................................................... 29
5.1.3 Assembling Ethernet Cables......................................................................................................................................37
5.1.4 Installing Cable Accessories......................................................................................................................................51
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5.1.5 Replacing the Mold of the Crimping Tool.................................................................................................................67
5.2 Environmental Requirements for Device Operation.................................................................................................... 70
5.2.1 Environmental Requirements for an Equipment Room............................................................................................ 70
5.2.2 Requirements for Power Supply................................................................................................................................78
5.3 Equipment Grounding Specifications...........................................................................................................................81
5.3.1 General Grounding Specifications.............................................................................................................................81
5.3.2 Grounding Specifications for an Equipment Room.................................................................................................. 81
5.3.3 Grounding Specifications for Devices.......................................................................................................................81
5.3.4 Grounding Specifications for Communications Power Supply.................................................................................82
5.3.5 Grounding Specifications for Signal Cables............................................................................................................. 83
5.3.6 Specifications for Laying Out Grounding Cables..................................................................................................... 83
5.4 Engineering Labels for Cables..................................................................................................................................... 84
5.4.1 Introduction to Labels................................................................................................................................................84
5.4.2 Engineering Labels for Optical Fibers.......................................................................................................................92
5.4.3 Engineering Labels for Network Cables................................................................................................................... 95
5.4.4 Engineering Labels for User Cables..........................................................................................................................96
5.4.5 Engineering Labels for Power Cables....................................................................................................................... 97
5.5 Guide to Using Optical Modules................................................................................................................................ 100
5.6 Fault Tag..................................................................................................................................................................... 103
5.7 Installation Checklist.................................................................................................................................................. 104
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About This Chapter

1 Product Overview

1 Product Overview
The AP6050DN and AP6150DN support MU-MIMO (4SU-3MU), provide comprehensive service support capabilities, and feature high reliability, high security, simple network deployment, automatic AC discovery and configuration, as well as real-time management and maintenance, which meet network deployment requirements. The APs comply with the
802.11ac Wave2 protocol and can provide up to 2.53 Gbit/s theoretical bandwidth for wireless users, greatly improving user experience.
The AP6050DN and AP6150DN are applicable to mobile office, high-density, elementary education, and higher education scenarios for providing high-performance wireless services for users. The APs can be deployed flexibly based on site environments.
1.1 Device Structure
1.2 Indicator Description
1.3 Basic Specifications
1.4 Ordering Information
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1.1 Device Structure

Table 1-1 describes the appearances of the AP6050DN and AP6150DN.
Table 1-1 Appearances of the AP6050DN and AP6150DN
1 Product Overview
Model
AP6050 DN
AP6150 DN
Appearance
Table 1-2 describes interfaces on the AP6050DN and AP6150DN.
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Indicator
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Table 1-2 Interface description
No. Name Description
1 Default Reset button: restores factory settings and restarts the
2 USB port Connects to a USB flash drive to extend the storage space
3 CONSOLE Connects to a maintenance terminal for AP configuration
4 Ground screw Connects the AP to a ground cable.
5 GE1 10/100/1000M port: connects to the wired Ethernet.
6 GE0/PoE 10/100/1000M port: connects to the wired Ethernet. The
7 DC 12V Connects to PoE or DC power supply.
1 Product Overview
device if you hold down the button more than 3 seconds.
of the AP, and provides a maximum of 2.5 W power.
and management.
port can connect to a PoE power supply device to provide power for APs.
NOTE
When the AP uses the DC power supply, use a power adapter for power supply; otherwise, the AP may be damaged.
8 Security slot Connects to a security lock.
9 Antenna port Connects to an external antenna for transmitting and

1.2 Indicator Description

The AP6050DN and AP6150DN provide only one indicator, as shown in Figure 1-1.
NOTE
Indicator colors may vary slightly at different temperature.
Figure 1-1 Indicator
receiving service signals. The ports are provided only on APs using external antennas.
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Table 1-3 Indicator description
Type Color Status Description
1 Product Overview
Default status after
Green Steady on The AP is just
power-on
Software startup status
Green Steady on after
blinking once
Running status Green Blinking once every
2s (0.5 Hz)
powered on and the software is not started yet.
After the system is reset and starts loading the software, the indicator blinks green once. Until the software is loaded and started, the indicator remains steady green.
l The system is
running properly, the Ethernet connection is normal, and STAs are associated with the AP.
l The 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.
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Type Color Status Description
1 Product Overview
Alarm Green Blinking once every
0.25s (4 Hz)
Fault
Red Steady on A fault that affects
l The software is
being upgraded.
l After the
software is loaded and started, the AP 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).
l The AP fails to
go online on the AC (the CAPWAP link disconnects).
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.

1.3 Basic Specifications

Table 1-4 provides basic specifications of the AP6050DN and AP6150DN.
Table 1-4 Basic specifications
Item
Technical specifications
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Dimensions (H x W x D)
Weight
Copyright © Huawei Technologies Co., Ltd.
Description
53 mm x 220 mm x 220 mm
l AP6050DN: 1.20 kg
l AP6150DN: 1.29 kg
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Item Description
1 Product Overview
Power specifications
Environment specifications
System memory
Power input
Maximum power consumption
Operating temperature
Storage temperature
Operating humidity
IP rating IP41
Atmospheric pressure
l 256 MB DDR3L
l 4 MB NOR FLASH + 128 MB NAND FLASH
l DC: 12 V ± 10%
l PoE power supply: in compliance with IEEE
22.9 W(excluding the output power of the USB port)
NOTE
The actual maximum power consumption depends on local laws and regulations.
l -60 m to +1800 m: -10°C to +50°C
l 1800 m to 5000 m: Temperature decreases by 1°C
-40°C to +70°C
5% to 95% (non-condensing)
53 kPa to 106 kPa
802.3at
every time the altitude increases 300 m.

1.4 Ordering Information

To place an order, contact technical support personnel.
Part Number
50082935 AP6050DN Mainframe(11ac wave2,indoor,4x4Dual Band,Built-in
50082938 AP6150DN Mainframe(11ac wave2,Dual Band,External
Description
Antenna,USB)
Antenna,USB)
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About This Chapter

2 AP Installation

2 AP Installation
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 Cable Connection
2.7 Connecting the Security Lock
2.8 Checking the Device After Installation
2.9 Powering on the AP
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AP6050DN & AP6150DN Hardware Installation and Maintenance Guide

2.1 Preparing for Installation

This section describes safety precautions and tool preparations for AP installation.
Safety Precautions
l Take proper measures to prevent injuries and device damage.
l Place the device in a dry and flat position away from any liquid and prevent the device
from slipping.
l Keep the device clean.
l Do 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.
2 AP Installation
Tool Preparation
To install APs, prepare tools listed in Table 2-1.
Table 2-1 Tools
Phillips screwdriver
Slip-proof glove Marker Hammer drill
Claw hammer Diagonal pliers Wire stripper
Protective gloves ESD gloves
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RJ45 crimping tool Cable cutter Network cable tester
Multimeter Ladder Safety helmet
Safety belt Anti-skid shoes -
2 AP Installation

2.2 Installation Flowchart

The following figure shows the process for installing an AP.
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Figure 2-1 Installation flowchart
2 AP Installation

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 list contains the following items.
l AP device
l Antennas
l Sheet metal mounting bracket
l OT terminal
l Adjustable buckle
l Expansion screws
l Quick start guide
l Warranty card
l MAC address label
l SN label
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≥200mm
≥200mm
≥200mm
≥200mm
Floor
Celling
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AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
NOTE
l If a PoE adapter or a DC power adapter is required, you need to purchase it separately.
l Antennas are provided only in the carton of the AP6150DN.

2.4 Determining the Installation Position

Indoor APs are usually mounted on a wall or ceiling using sheet metal mounting brackets. The installation position is determined by the site survey. There must be at least 200 mm clearance between the cabling end of the AP and the wall. Figure 2-2 shows space requirements.
Figure 2-2 Mounting an AP
2 AP Installation
When determining the AP installation position, comply with the following rules:
l Try to reduce the number of obstacles, such as walls, between the AP and user terminals.
l Place the AP far away from electronic devices that may produce radio interference, such
as microwave ovens, other APs, antennas, and other radio communication devices. For details, see Table 2-2.
l Install the AP in a hidden position that does not affect daily lives and work of residents.
l Install 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.
l Do not install the AP in an environment with high temperature, dust, poisonous gases,
flammable or explosive objects, electromagnetic interference (from a radar station, radio station, or substation), unstable voltage, violent shakes, or strong noise.
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Table 2-2 General anti-interference requirements
Scenario Deployment Distance Requirement
2 AP Installation
Indoor installation
l There should be at least a 7 m distance between antennas.
l The antennas should be placed at least 2 m from the 4G antennas of
the carrier.
l The antennas should be placed far away from electronic devices that
may produce interference, such as microwave ovens.
NOTE
If antennas are embedded into APs, the deployment distance requirements on the antennas are those on APs.

2.5 Installing the AP

NOTE
l Remove the protective film on the surface before installation to prevent electrostatic discharge.
l The installation of the AP6150DN is used as an example.

2.5.1 Installing the Device on a Wall

Mounting APs on a wall requires sheet metal mounting brackets and expansion screws. The procedures are as follows:
1. Fix the mounting bracket to the wall, adjust the installation position, and use the marker to mark the drilling positions where expansion screws are installed.
2. Use a 6 mm drill bit to drill 25 mm to 30 mm deep holes in the drilling positions. Hammer the expansion tubes into the holes until the expansion tubes are completely embedded into the wall.
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3. Fix the mounting bracket to the wall and use the Phillips screwdriver to fasten three expansion screws into the expansion tubes.
2 AP Installation
4. Connect the cables. For details, see
2.6 Cable Connection.
5. Align the mounting screws at the rear of the AP with the mounting holes on the sheet metal mounting bracket and then press the AP downwards to secure the AP on the bracket.

2.5.2 Installing the device on a Ceiling

1. Remove a ceiling tile, determine locations of mounting holes based on the distance between two installation holes on the mounting bracket, use a hammer drill to drill holes on the ceiling tile, and fix the mounting bracket to the ceiling tile.
The screws provided for ceiling-mounting of APs are 30 mm long and can be used to fix an AP on a ceiling not thicker than 15 mm. To install APs on thicker ceilings, you need to purchase longer screws.
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1. Ceiling tile 2. Adjustable buckle 3. M4x30 screw
2. Connect the cables. For details, see 2.6 Cable Connection.
3. Hang the AP on the mounting holes by aligning the mounting screws at the rear of the AP with the mounting holes on the bracket and push the AP horizontally to secure the AP.
2 AP Installation
NOTE
Ensure that the AP is correctly installed on the mounting bracket and there must be 200 mm space above and around the AP for maintenance.

2.5.3 Installing the device on a T-rail

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1. Remove two ceiling tiles around the T-rail, use screws to fix the adjustable buckle to the mounting bracket, hook the adjustable buckle to the T-rail, and secure the screw on the adjustable buckle to fasten the mounting bracket and T-rail.
2. Connect the cables. For details, see 2.6 Cable Connection.
3. Hang the AP on the mounting holes by aligning the mounting screws at the rear of the AP with the mounting holes on the bracket and push the AP horizontally to secure the AP.
2 AP Installation
NOTE
l Before fixing the adjustable buckle with a screw, you need to adjust the buckle to a proper position
based on the T-rail width.
l Ensure that the AP is correctly installed on the mounting bracket and there must be 200 mm space
above and around the AP for maintenance.
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2.6 Cable Connection

Table 2-3 describes cable connections (the AP6150DN is used as an example).
Figure 2-3 Appearance of the AP6150DN
2 AP Installation
Table 2-3 Cable connections
No.
1 USB flash drive Connects to a USB flash drive to extend the storage space
2 Ground cable Connects the AP to the ground.
3 Network cable
4 DC power adapter When the AP uses the DC power supply, use a power
Cable or Device Description
of the AP, and provides a maximum of 2.5 W power.
l CAT5e cables or higher must be used.
l The service network cable and PoE input cable cannot
be connected to the console port. Otherwise, the AP may be damaged when using PoE power supply. The network cable length cannot exceed 100 m.
l If the AP needs to connect to the Ethernet, ensure that
the Ethernet cable is working properly. If the Ethernet cable is not working properly, for example, RJ45 connectors are short-circuited, the AP may fail to be powered on or fail to work. Before connecting an Ethernet cable to the AP, use the cable test tool to check whether the cable is qualified. If the cable is unqualified, replace it.
adapter for power supply; otherwise, the AP may be damaged.
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No. Cable or Device Description
5 Antenna Connects to an external antenna for transmitting and
NOTE
l The AP is powered by either the DC power supply or PoE power supply that backs up each other.
l By default, the USB port is disabled. You can enable it using the web platform or CLI. For details, see the
configuration guide in the AC product documentation.
Pay attention to the following points when bundling the cables:
l Different types of cables must be separately routed with the minimum spacing of 30 mm
and cannot be entangled or crossed. Cables should be parallel or separated using dedicated separators.
l Bundled cables are closely arranged, straight, tidy, and undamaged.
l Cable ties are bound neatly facing the same direction, and those at the same horizontal
line must be in a straight line. Cable tie tails should be cut smoothly and evenly.
l Labels or nameplates must be attached to the cables after they are installed.
2 AP Installation
receiving service signals. Only the AP6150DN provides antenna ports for connecting external antennas.
Connecting Antennas
Connect the antennas delivered in the installation accessory package of the AP to the RF ports on the AP, tighten the nuts (with a torque of 0.8 N•m), and adjust antenna angles as required.
Connecting the Ground Cable
Use ground screws and ground cables to ground the AP. The ground cables need to be prepared on site. The M4 OT terminal is used to connect to the AP and M6 OT terminals to the ground bar. The type of OT terminals can also be determined according to site surveys. Cut the cable into the required length according to site conditions.
Tighten the OT terminal for the AP with a torque of 3 N•m. The tightening torque for the ground bar varies according to the OT terminals used.
l M4: 1.4 N•m
l M6: 4.8 N•m
l M8: 12 N•m
Ground cable deployment requirements are as follows:
l The ground cables must be connected to a group of ground bars.
l The bend radius of the ground cables must be larger than or equal to five times the cable
diameter.
l The ground cables must be buried underground or routed indoors and cannot be led into
the equipment room aerially.
l Both 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.
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AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
l Ground cables must be separated from signal cables to reduce interference between
them.
l Do not add any switch or fuse on the ground cable.
l Do not use another device for an electrical connection with the ground cable.
l All metal components in the shell must be securely connected to the ground terminal.

2.7 Connecting the Security Lock

There is a security slot on the device. You can lock the device to an immovable object to prevent 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.
2 AP Installation
NOTE
You need to purchase the security lock separately.

2.8 Checking the Device After Installation

Table 2-4 shows the items to be checked after installation is complete. For more details, see
Installation Checklist in the appendix.
Table 2-4 Installation checklist
No.
1 The device is installed by strictly following the design draft. The
2 The device is securely installed.
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Check Item
installation position meets space requirements, with maintenance space reserved.
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No. Check Item
3 The power cables and PGND cables are intact and not spliced.
4 Terminals of the power cables and PGND cables are welded or cramped
firmly.
5 All power cables or PGND cables are not short-circuited or reversely
connected and must be intact with no damage.
6 The power cables and ground cables are separated from other cables and
bundled separately.
7 The working ground, protection ground, and surge protection ground
share the same group of ground bars.
8 Connectors of signal cables are complete, intact, and tightly connected.
The signal cables are not damaged or broken.
9 Labels on cables, feeders, or jumpers are clear and correct.
2 AP Installation

2.9 Powering on the AP

After the AP is powered on, observe indicator on the AP to determine the system running status. For details, see 1.2 Indicator Description.
NOTE
Do not frequently power on and off the device.
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About This Chapter

3 Logging In to the Device

3 Logging In to the Device
3.1 Logging In to the Device Using STelnet/Telnet
3.2 Logging In to the Device Through the Web System (Applicable to the Fat AP Only)
3.3 Logging In to the Device Through the Console Port
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3 Logging In to the Device

3.1 Logging In to the Device Using STelnet/Telnet

You can log in to the device using STelnet V2 or Telnet to configure, manage, and maintain the device in the CLI.
NOTE
l By default, only the STelnet V2 service is enabled on the device.
l Telnet has security vulnerabilities. You are not advised to enable the Telnet service.
Before logging in to the device, complete the following tasks:
l Power on the device.
l Prepare network cables used to connect device interfaces.
The following table lists the default configuration of the device. You are advised to change the default user name and password on your first login.
Table 3-1 Default configuration of the device
Parameter
Default Setting
User name admin
Password admin@huawei.com
IP address 169.254.1.1
Subnet mask 255.255.0.0
NOTE
If a Fit AP is already online on the AC, you can remotely log in to the AC on a local terminal and run the display ap all command to check the IP address of the device.
The following example uses the default parameters and is used for reference only.
Step 1 Use network cables and a LAN switch to connect the PC to the network interface of the
device.
Step 2 Assign the PC with an IP address on the same network segment as the default IP address of
the device so that the PC and device are reachable to each other.
If the device uses the default settings, the IP address of the PC must be in the network segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.
Step 3 Start the CLI on the PC and access the IP address 169.254.1.1 of the device using STelnet V2.
Step 4 Enter the user name and password as prompted to log in to the user interface.
----End
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3 Logging In to the Device

3.2 Logging In to the Device Through the Web System (Applicable to the Fat AP Only)

A Fat AP has a built-in web system. You can use a web browser to log in to the device to configure, manage, and maintain the device on a graphic user interface (GUI).
Before logging in to the device, complete the following tasks:
l Power on the device.
l Prepare network cables used to connect device interfaces.
The following table lists the default configuration of the device. You are advised to change the default user name and password on your first login.
Table 3-2 Default configuration of the device
Parameter
User name admin
Password admin@huawei.com
IP address 169.254.1.1
Subnet mask 255.255.0.0
Step 1 Use network cables and a LAN switch to connect the PC to the network interface of the
device.
Step 2 Assign the PC with an IP address on the same network segment as the default IP address of
the device so that the PC and device are reachable to each other.
If the device uses the default settings, the IP address of the PC must be in the network segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.
Step 3 Open the browser on the PC, enter http://IP address in the address box, and press Enter to
log in. Select a language for the web system, enter the default user name and password, and click Login to enter the web system home page.
Default Setting
----End

3.3 Logging In to the Device Through the Console Port

Before logging in to the device, complete the following tasks:
l Power on the device.
l Prepare a console cable.
l Prepare terminal simulation software.
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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 the user manual or online help.
Step 1 Use a console cable to connect the PC to the console port of the device.
Step 2 Start terminal emulation software on the PC, create a connection, and set communication
parameters as follows:
l Bits per second: 9600
l Data bits: 8
l Parity: None
l Stop bits: 1
l Flow control (F): None
Step 3 Press Enter and enter the authentication information as prompted to log in to the user view.
(The following information is only for reference.)
For a Fit AP, enter the default user name admin and password admin@huawei.com.
3 Logging In to the Device
You are advised to change the default user name and password on your first login.
Login authentication
Username: Password: Info: You are advised to change the password to ensure security.
For a Fat AP, set a passowrd of console, and use the password to log in.
Please configure the login password: Info: A plain text password is a string of 8 to 16 case-sensitive characters and must be a combination of at least two of the follow ing: uppercase letters A to Z, lowercase letters a to z, digits, and special characters. A cipher text password contains 56 or 68 ch aracters. Enter password: Confirm password:
----End
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About This Chapter

4 Hardware Failures

4 Hardware Failures
This section describes common methods for troubleshooting typical hardware faults.
4.1 A Device Fails to Be Powered On
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4.1 A Device Fails to Be Powered On

Fault Description
The SYS indicator of a device is off.
Possible Causes
4 Hardware Failures
Power Supply Mode
Power supply using a power module
PoE power supply
Possible Cause
l The device is powered off.
l The power cable is not securely
connected to the device.
l The power supply unit has failed.
– If the device connects to an external
power source, its power adapter may fail.
– If the device has a built-in power
supply, the device itself may be faulty.
l The power sourcing equipment does not
support the PoE function or is faulty.
l The power sourcing equipment is
incorrectly configured (the PoE function is disabled or the power-off time range is improperly set).
l The line is faulty (the network cable or
distribution frame is damaged).
l The device is faulty.
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Troubleshooting Procedure
Power Supply Mode Troubleshooting Procedure
Power supply using a power module 1. Check whether the device is powered
4 Hardware Failures
off.
2. Check that the power cable is securely connected to the device.
3. Check whether the power supply is normal.
Replace the power adapter with a normal one. If the device is powered on, the original power adapter is faulty. Contact technical support personnel or Huawei agent and ask them to replace the power adapter.
4. If the device still cannot be powered on, the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.
PoE power supply 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 technical support personnel or Huawei agent and ask them to replace the device.
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About This Chapter

5 Appendix

5 Appendix
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
5.7 Installation Checklist
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5.1 On-site Cable Assembly and Installation

5.1.1 Cable Assembly Precautions

Checking the Appearance of Cables
l If the cable jacket or insulation is visibly dirty, clean it before assembly.
l If the jacket or insulation of a cable has visible damage, irreparable scuffing, or other
defects, do not use the cable.
l If the shield layer of a cable is damaged, do not use the cable.
l If 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.
5 Appendix
Checking the Appearance of Connectors
l Do not use connectors with visible defects, damage, rust or scuffing.
l Do not use connectors if their shells or pins have exposed part or uneven plating, or their
pins are lost, broken, or bent.
l Do 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
l Use dedicated tools or tools delivered by Huawei and follow the methods given here
during assembly.
l Hold terminals of cables instead of pulling the cables themselves when installing or
removing cable components.
l Take 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.
l Take the following precautions when crimping and connecting cables or connectors:
– The terminals and conductors should be connected tightly after they are crimped.
They should not be moved or turned.
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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 for your reference only.

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
5 Appendix
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)
5 Appendix
NOTICE
l When you strip a power cable, do not damage the conductor of the cable.
l If 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
Cross­Sectional Area of Conductor
(mm2(in.2))
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)
Value of L1 (mm(in.))
Cross-Sectional Area of Conductor
(mm2(in.2))
Value of L1 (mm(in.))
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.
5 Appendix
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)
Step 5 Push the heat shrink tubing (A) toward the connector until the tube covers the crimped part,
and then use a heat gun to heat the tube, as shown in Figure 5-5.
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Figure 5-5 Heating the heat shrink tubing (OT terminal)
NOTICE
5 Appendix
Stop heating the shrink tubing when the connector is securely locked in the shrink tubing. Do not heat the shrink tubing too long as this may 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 tubing C. Insulation layer of a power
cable
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Procedure
Step 1 Strip a part of the insulation to expose the cable conductor with a length of L, as shown in
Figure 5-7. The recommended values of L are listed in Table 5-2.
NOTICE
l When you strip a power cable, do not damage the conductor of the cable.
l If 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)
5 Appendix
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))
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.
Value of L (mm(in.))
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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.
5 Appendix
Figure 5-9 Crimping the joint parts of the bare crimping terminal and the conductor (JG terminal)
Step 5 Push the heat shrink tubing toward the connector until the tube covers the crimped part, and
then use a heat gun to heat the tube, 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
5 Appendix
Procedure
Step 1 Strip a part of the insulation to expose the cable conductor with a length of L1, as shown in
A. Cord end terminal B. Insulation layer of a power cable C. Conductor of a power cable
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
5 Appendix
Cross­Sectional Area of Conductor
(mm2(in.2))
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 Put 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.
Value of L1 (mm(in.))
Cross-Sectional Area of Conductor
(mm2(in.2))
Value of L1 (mm(in.))
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 Putting 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.
5 Appendix
Table 5-4 Maximum width of a tubular crimped terminal
Cross-Sectional Area of Tubular Terminal (mm2(in.2))
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)
Maximum Width of Crimped Terminal W1 (mm(in.))
----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
5 Appendix
Procedure
Step 1 Fit the jacket of the connector onto the Ethernet cable, as shown in Figure 5-16.
A. Jacket of connector B. Metal shell of connector C. Wire holder of
connector
E. Jacket of Ethernet cable F. Shield layer of Ethernet
cable
G. Twisted-pair wires -
Figure 5-16 Fitting the jacket of the connector onto the Ethernet cable
D. Plug of connector
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
l When you remove a section of the jacket, do not damage the shield layer of the twisted-
pair cable.
l When 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.))
5 Appendix
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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C
G
White-Green
Green
White-Orange
Orange
Blue
White-Blue
White-Brown
Brown
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Figure 5-19 Removing the shield layer of a twisted-pair cable (unit: mm (in.))
Step 5 Lead the four pairs of twisted-pair wires through the wire holder, as shown in Figure 5-20 and
Figure 5-21. Ensure that the colored wires are in the correct location in the cable.
Figure 5-20 Leading wires through the wire holder
5 Appendix
Figure 5-21 Cable locations in a wire holder
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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Brown
Wh ite-Brown
Green
White-Blue
Blue
White-Green
Orange
White-Orange
Pin 8
Pin 1
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Figure 5-22 Four pairs of cables on a wire holder
Figure 5-23 Connections between wires and pins
5 Appendix
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Table 5-5 Connections between wires and pins (using a straight-through cable as an example)
Matching Pins of Wires
Wire Color
1 White-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
8 Brown
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
5 Appendix
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 Putting the connector body onto the wire holder
Step 9 Push the metal shell toward 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
5 Appendix
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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A
B
C
C
16
White-Orange
White-Green
Orange
Blue
White-Blue
Green
White-Brown
Brown
Pin 8
Pin 1
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Figure 5-28 Components of an unshielded RJ45 connector and cable
A. Plug of connector B. Jacket C. Twisted-pair wires
Procedure
5 Appendix
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.))
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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
1 White-Orange
2 Orange
3 White-Green
4 Blue
5 White-Blue
6 Green
7 White-Brown
8 Brown
5 Appendix
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
l To 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.
l The contact strips must be parallel to each other, with an offset of less than ± 5°. The top
margin of a strip must be parallel to the axis of the connector, with an offset of less than ± 10°.
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l To ensure conductivity, the surface of the contact strips must be clean.
l The contact strips must be in good contact with the RJ45 socket. The plastic separators
must remain intact and be aligned.
l The 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
5 Appendix
Figure 5-33 Contact strips of the same height
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.
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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
5 Appendix
Step 4 Check whether the contact strips and the plastic separators are well aligned and intact. If a
separator is skewed and cannot be fixed, replace it with a new RJ45 connector. Figure 5-36 shows an unqualified piece.
Figure 5-36 Skewed plastic separators
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
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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
5 Appendix
Testing the Connection of Assembled Cables
Context
Huawei provides two types of Ethernet cables: straight-through cables and crossover cables.
l Straight-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
2 2 Orange Twisted
1 1 Orange-White
6 6 Green Twisted
3 3 Green-White
4 4 Blue Twisted
RJ45 Connector 2 Core Wire Color Twisted or Not
5 5 Blue-White
8 8 Brown Twisted
7 7 Brown-White
l Crossover 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.
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Pin8
Pin1
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
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.
5 Appendix
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
Figure 5-38 Pins of an RJ45 connector
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
5 Appendix
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, which depends on 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.
If the indicators do not come on in this sequence, 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
5 Appendix
----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 are 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 radius (R) of cables or fibers must meet the requirements listed in Table 5-9.
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Table 5-9 Bending radius of cables or fibers
Cable or Fiber Bending Radius (R)
Ordinary cable In normal cases, R ≥ 2d. When the cable is
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
l Hold terminals of cables instead of pulling the cables themselves when installing or
removing cable components.
l Do not insert a connector forcibly when the connector is blocked. Use a dedicated tool to
pull out the connector. Install the connector again after you check that the pins are inserted properly.
l Before 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, determine the reason and try again. Do not apply too much force, or the screw or adapter may be damaged.
l When removing densely aligned cables or fiber connectors, use dedicated pliers such as
cable-pulling pliers and fiber-pulling pliers.
l Do not twist, bend, stretch, or extrude fibers during installation.
l Cover the idle fiber connectors with dust caps. Remove the dust caps before using the
fiber connectors.
5 Appendix
connected with a connector, R ≥ 5d.
Requirements for Cable Routing
l To protect cables, remove the burrs in the cable through-holes or install protective rings
in the holes.
l To ease the connection and to avoid stress, keep cable joints slack. After connecting
multiple cables to a connector that has multiple interfaces, keep the cables slack to avoid generating stress.
l Bind or clean cables gently because cable distortion affects signal quality.
l Keep cables away from moveable components such as doors.
l Sharp objects must not touch cable wiring to prevent damage to cables.
l To protect power cables, route power cables of the active and standby power modules
separately.
Installing Power Adapters
Installing the OT Terminal
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Procedure
l Install an OT terminal.
a. 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
5 Appendix
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 incorrect.
Figure 5-43 Installing an OT terminal, showing the orientation of crimping sleeve
b. 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
5 Appendix
Ensure that the OT terminal is not in contact with other terminals or metal components.
c. Move the cable slightly and ensure that it is securely connected, as shown in Figure
5-45.
Figure 5-45 Installed OT terminal
l Install 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
5 Appendix
NOTICE
If the two terminals are different sizes, place the smaller one above the bigger one. A maximum of two terminals can be installed on a post.
l To remove an OT terminal, loosen the screw counterclockwise.
----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 turn the screw clockwise to fasten the terminal,
as shown in Figure 5-49.
5 Appendix
Figure 5-49 Feeding the terminal into the jack
NOTICE
l Ensure that the exposed section of the terminal is less than 2 mm (0.079 in.) in length.
l Do not press the insulation of the terminal.
l Insert 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 counterclockwise.
----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
5 Appendix
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.
5 Appendix
Figure 5-53 Removing a 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
5 Appendix
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
5 Appendix
----End
Installing Fiber Connectors
Context
NOTICE
l After you remove the dustproof cap, ensure that the fiber pins are clean and install them as
soon as possible.
l When 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
Installing an FC Fiber Connector
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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
5 Appendix
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 clockwise 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.
5 Appendix
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
5 Appendix
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
5 Appendix
----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 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.
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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.
5 Appendix
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.
5 Appendix
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 Tool

5 Appendix
Procedure
Step 1 Hold the handles of a pair of COAX crimping tools. Loosen the two fastening screws
Step 2 Hold the handles of the COAX crimping tools to open the self-locking mechanism. The jaw
counterclockwise, as shown in Figure 5-72.
Figure 5-72 Loosening two fastening screws
of the COAX crimping tools opens automatically, as shown in Figure 5-73.
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Figure 5-73 Pliers jaw opening automatically
5 Appendix
Step 3 Remove the mold from the COAX crimping tools, as shown in Figure 5-74.
Figure 5-74 Removing the mold from the COAX crimping tools
Step 4 Place the mold 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 mold in the COAX crimping tool
5 Appendix
NOTICE
Keep the short side of the mold inwards and the long side outwards, with the teeth of the mold aligning from the larger size to the smaller size.
Step 5 Hold the handles of the COAX crimping tools tightly to match the mold 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 clockwise. Figure 5-77 and Figure 5-78shows the mold installed in the COAX crimping tool.
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Figure 5-77 Mold installed in the COAX crimping tool
Figure 5-78 An installed mold
5 Appendix
----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-proof construction 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 safety, and civil air defense. Construction must conform to government standards, regulations, and other requirements.
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The equipment room should be located in a place free from high temperature, dust, toxic gases, explosive materials, or unstable voltage. Keep the equipment room away from significant vibrations or loud noises, as well as power transformer stations.
The specific requirements for selecting a site for an equipment room are as follows:
l The 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, use a high-quality equipment room or protection products.
l The room should be located away from livestock farms, or be upwind of the livestock
farms. Do not use an old livestock room or fertilizer warehouse as the equipment room.
l The equipment room must be far away from residential areas. An equipment room that is
not far away from residential areas must comply with equipment room construction standards to avoid noise pollution.
l The room should be located far away from industrial and heating boilers.
l The 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.
l The doors and windows of the equipment room must be kept closed to maintain an
airtight room.
l Using steel doors to ensure sound insulation is recommended.
l No 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 such that they are smooth, wear­resistant, dustproof, flame retardant, sound insulated, heat absorptive, and have electromagnetic shielding.
l The 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.
l It 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.
l The equipment room should be strong enough to resist winds and downpours.
l The 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.
l Do not place air conditioning vents near the equipment so that they blow directly on the
equipment because condensation may be blown into the equipment.
l Do not use decorative materials that contain sulfur in the equipment room.
5 Appendix
Equipment Room Layout
An equipment room usually contains mobile switching equipment, telecommunications equipment, power supply equipment, and other auxiliary equipment. To ensure easy maintenance and management, place the equipment in different rooms. Figure 5-79 shows the layout of the equipment room.
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Control room Generator room
Transmission
room
Main communication
equipment room
Power distribution
room
Battery room
Substation room
Communication cable and optical cable
Power cable
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Figure 5-79 Layout of the equipment room
5 Appendix
Construction Requirements for the Equipment Room
The general layout principles of the equipment room are as follows:
l It should meet requirements for laying out and maintaining communication cables and
power cables.
l It should reduce the cabling distance, which facilitates cable maintenance, reduces
potential communication faults, and maximizes efficiency.
Table 5-10 describes 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
The floor must bear loads larger than 150 kg/m2 (0.21 bf/in.2).
capacity
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Item Requirements
5 Appendix
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
Installation position of the
Separate the area where the equipment is installed from the equipment room door. The partition wall can block some outside dust.
Install air conditioner vents so that the air does not blow directly on equipment.
air conditioner
Other
Avoid the proliferation of mildew, and keep out rodents (like mice).
requirements
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 lists the requirement for dust concentration in the equipment room.
Table 5-11 Requirements for dust particles in the equipment room
5 Appendix
Mechanical active
Unit Concentration
material
Dust particle
Particle /m
3
≤ 3x 10
4
(no visible dust accumulated on a workbench in three days)
Suspending dust
Precipitable dust
3
mg/m
mg/m2·h
≤0.2
≤1.5
Description
l Dust particle diameter ≥ 5 µm
l Suspending dust diameter ≤ 75 µm
l 75 µm ≤ precipitable dust diameter ≤ 150 µm
Take the following measures to meet the requirements:
l Use dustproof materials for ground, wall, and ceiling construction.
l Use screens on the door and windows facing outside. The outer windows should be dust-
proof.
l Clean the equipment room regularly and clean the air filter monthly.
l Wear shoe covers and ESD clothing 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 lists the requirements for the corrosive gas concentration.
Table 5-12 Requirements for corrosive gas concentration
Chemical active material
SO
2
H2S
NH
3
Cl
2
Take the following measures to meet the requirements:
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Unit Concentration
3
mg/m
3
mg/m
3
mg/m
3
mg/m
Copyright © Huawei Technologies Co., Ltd.
≤0.20
≤0.006
≤0.05
≤0.01
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l Avoid constructing the room near a place where the corrosive gas concentration is high,
such as a chemical plant.
l Ensure the air intake vent of the room is in the prevailing upwind direction from any
pollution source.
l Place batteries in different rooms.
l A professional service should monitor the corrosive gas conditions regularly.
Requirements for ESD Prevention
The absolute value of electrostatic voltage must be less than 1000 V.
Take the following measures to meet this requirement:
l Train operators about ESD prevention.
l Keep the correct humidity level in the equipment room to reduce the impact of static
electricity.
l Lay out an ESD floor in equipment rooms.
l Wear ESD shoes and clothing before entering equipment room.
l Use ESD tools, such as wrist straps, tweezers, and pullers.
l Ground all conductive materials in the room, including computer terminals. Use ESD
worktables.
l Keep non-ESD materials (such as common bags, foam, and rubber) at least 30 cm (11.81
in.) away from boards and ESD-sensitive components.
5 Appendix
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:
l Take effective measures against electrical interference from the power supply system.
l Do not use the working ground of the equipment as the same ground for surge
protection. Separate them as far as possible.
l Keep the equipment far away from high-power radio transmitters, radar units, and high-
frequency and high-current equipment.
l Use electromagnetic shielding if necessary.
Requirements for Lightning Proof Grounding
Table 5-13 lists the requirements for lightning proof grounding.
Table 5-13 Requirements for lightning proof grounding
Item
Capital construction
Requirements
l Use reinforced concrete to construct the equipment room.
l Install a lightning proof device like a lightning rod outside the room.
l The lightning proof ground shares the same grounding body with
the protective ground of the room.
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Item Requirements
5 Appendix
Power cables leading in the equipment room need to be equipped with a surge protector
Grounding for DC power distribution
l After the low-voltage power cables are led into the room, install the
surge protector for the power cables in the AC voltage stabilizer and the AC power distribution panel (box). Correctly ground the surge protector nearby.
l For an equipment room in urban area, install a power supply surge
protector with the nominal discharge current of no less than 20 kA. For an equipment room that is built in a suburb and subject to lightning strikes, install a power supply surge protector with the nominal discharge current of more than 60 kA. For an equipment room that is built in a mountain area and subject to frequent lightning strikes, or in a separate high-rise building in a city, install a power supply surge protector with the nominal discharge current of more than 100 kA.
l The ground cable of the surge protector should be no longer than 1
m (3.28 ft).
l Connect 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.
l The power equipment must have a DC working ground cable, which
can connect the power equipment to the collective ground cable of the telecommunication site (or the protective ground bar of the equipment room).
Equipotential connection
General requirements for grounding
Grounding resistance
l Properly ground the devices and auxiliary devices in the room such
as mobile base station, transmission, switching equipment, power supply equipment, and cable distribution frame. Connect all PGND cables to the collective protective ground bar. Connect all PGND cables in one equipment room to one protective ground bar.
l Apply joint grounding to the working ground and protective ground
of devices, which means the two share one grounding network.
l The cable tray, rack or shell, metal ventilation pipe, metal door or
window of the equipment should be grounded for protection.
l Do not connect the neutral line of the AC power cable with the
protective ground of any telecom equipment in the equipment room.
l Do not install a fuse or switch on the ground cable.
l All ground cables should be as short as possible, and arranged in a
straight line.
l The grounding resistance must be lower than 1 ohm.
l The 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.
l Measure the grounding resistance periodically to ensure effective
grounding.
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Item Requirements
5 Appendix
Routing of signal cable
l Do not arrange the signal cables overhead in the equipment room.
All signal cables must be led into the site underground.
l Use the cables with a metal jacket or place them into a metal pipe if
they come out/in the equipment room.
l Ground the idle lines inside the cable in the equipment room.
l Signal cables should be deployed on internal walls. Do not deploy
outdoor aerial cables.
l Keep signal cables away from power cables and surge protection
devices.
Collective ground cable
l Use a ground ring or ground bar for the collective ground cable.
l Do not use aluminum cables as ground cables. Adopt measures to
prevent electrification corrosion when connecting different metal parts together.
l Use a copper busbar as the collective ground cable with a cross-
sectional area of no 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-inThe 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
5 Appendix
Grounding of the cabinet
l All 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 can be connected to the ground.
l The resistance between the device ground terminals and ground bar
cannot exceed 0.1 ohm.
l The cabinet can be grounded using the protecting earthing (PE) wire
of the electrical network in the building, zinc-coated angle steel, or the main steel bar of the building.
l If the cabinet is grounded using the PE wire of the electrical
network, use a multimeter to test the grounding status. 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.
l The yellow-green ground cable contains multiple copper wires. The
cross-sectional area of the ground cable must be no less than 6 mm (0.0093 in.2) and the length cannot exceed 3 m (9.84 ft.).
l Ground cables cannot be twisted with signal cables.
l Antirust and anticorrosion measures must be taken on the ground
terminals.
l The 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.
2

5.2.2 Requirements for Power Supply

Requirements for AC Power Supply
An AC power supply system consists of power mains, uninterruptible power supplies (UPSs), and self-supplied electric generators. 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 be 3-phase, 5-wire mode or monophase 3-wire mode. This AC power supply should be 110 V/220 V, with a frequency of 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
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protect 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 lists the voltage range of the AC power supply for the devices.
Table 5-14 Voltage range of AC power supply
Item Requirements
5 Appendix
AC power capacity to
-10% to +5% of the rated voltage
support the devices
AC power capacity to
-15% to +10% of the rated voltage support the power modules and important buildings
Frequency of alternating
-4% to +4% of the rated value current
Voltage wave shape sine
Within 5% of the rated voltage
distortion
The automated electric generator must have a standard interface that supports telecommunication protocols, remote telecommunication, monitoring, and control.
AC power cables should meet the following specifications:
l AC neutral should have a conductor with the same cross section as the phase line.
l AC 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 are recommendations for the AC power supply.
l If 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.
l If 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.
l A UPS or inverter power supply system is required to provide uninterrupted AC power
to support the telecommunication load.
l If 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 uninterruptible power supply.
l Storage 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.
l A 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.
l A medium-scale enterprise can use a power room and a battery room for centralized
power supply or use distributed power supply systems.
l A 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 lists the specifications for the DC power supply.
Table 5-15 Specifications for the DC power supply
5 Appendix
Item
DC power capacity to support the surge current
Regulated voltage precision
Overshoot amplitude of switch on/off
Peak noise voltage
Dynamic response
Requirements
Greater than 1.5 times the rated current
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%.
Integral value of the DC output voltage ±5%
≤200 mV
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 are recommendations for the DC power supply.
l Use distributed power supply mode. Use multiple DC power supply systems and put
power equipment in multiple locations.
l Adopt a standard DC power supply system, and set the output voltage to the
communications equipment within the required range.
l Improve reliability of the AC power supply system to reduce the necessary capacity of
storage batteries. For small offices, increase the capacity of storage batteries if it is difficult to enhance reliability of the AC power supply system.
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l The 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.
l Install 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
5 Appendix
No.
1 The working ground and protective ground, including the shielded ground and the
2 The cable trays, shells, metal ventilation pipes, metal doors and windows in the
3 The metal parts of the equipment which are electrically floating in normal
4 The ground cable must be connected securely to the protective ground bar of the
5 Do not use other equipment as part of the ground cable or electrical connection.
Description
lightning-proof ground of the cable distribution frame should share the same grounding conductor.
equipment room should be grounded for protection.
conditions should be grounded for protection.
equipment room.

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 lists the equipment grounding specifications.
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Table 5-17 Equipment Grounding Specifications
No. Description
1 All 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 protective ground for various devices jointly to a general ground bar, and then to the same protective ground bar in the room together with the protective ground (PGND) of the device.
2 The PGND of the equipment is shorted to the copper ground bar provided by the
customer. The short-circuiting cable used should be a yellow-green plastic insulated cable with a copper core and a 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 of 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 Appendix
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.
1 The inlet for the AC power cable at the equipment room should be equipped with a
2 The protective ground for the power supply and that for communication equipment
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Description
surge protection device (C-level) with a nominal discharge current no less than 20 kA.
share the same grounding conductor. If the power supply and the equipment are in the same equipment room, use the same protective ground bar for them if possible.
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No. Description
3 Use 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 protective ground of the DC power supply equipment
should use the same grounding conductor with the protective 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

Table 5-19 lists the grounding specifications for signal cables.
5 Appendix
Table 5-19 Grounding specifications for signal cables
No.
1 Equip the cable outdoors with a metal jacket, well grounded at both ends, or
2 The incoming and outgoing signal cables to and from the office and unused wires
3 The Tone & Data Access (TDA) cable must pass through the Main Distribution
4 Do not route signal cables overhead.
Description
connect the ends of the metal jacket to the protective 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.
inside the cable should be grounded for protection.
Frame (MDF) with surge protective device (SPD) when going out of the office. The cable's shield layer should be connected to the protective ground of the MDF. The MDF should use the same grounding conductor as the cabinet.

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.
1 The grounding wire should not run parallel to or twist around the signal cable.
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No. Description
2 Bury ground underground or arrange them indoors. Do not route ground cables
overhead.
3 Do not connect two cables together to extend the PGND cable, or add any switches
or fuses.
4 The PGND cable should be an alternating yellow and green plastic insulated one
with a copper core.
5 The neutral line of the AC power cable cannot be connected to the protective
ground of transmission and communication equipment in the equipment room.
6 A PGND cable should be as short as possible, with a length of no more than 45 m
(147.64 ft).

5.4 Engineering Labels for Cables

5 Appendix
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.
Engineering labels are specialized for power cables and signal cables:
l Signal cables include network cables, optical fibers, and user cables.
l Power cables include the AC power cables and DC power cables.
NOTE
Fill in labels according to specified requirements to keep consistency of labels in the equipment room. Make a relevant statement in the self-check report.

5.4.1 Introduction to Labels

Label Materials
Features:
l Thickness: 0.09 mm (0.004 in.)
l Color: chalk white
l Material: polyester (PET)
l Ambient temperature: -29°C (-20.2°F) to +149°C (300.2°F)
l Printed by a laser printer and written with a marker
l Pass 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
5 Appendix
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. Each dividing line is light blue (Pantone 656c) and 1.5 mm x 0.6 mm (0.06 in. x 0.02 in.).
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.).
The word "TO:" (upside down in the figure) at the lower right corner of the label 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
5 Appendix
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
You can obtain a template from the Huawei local office to print labels.
The template is made in Microsoft Word. Follow these instructions to use the template:
l You can modify the contents of the template. Do not change settings of centered
characters, direction, and fonts.
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l If many characters need to be filled in, decrease the font size, 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 labels, use a laser jet printer of any model. Before printing labels, 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 the label paper, and check whether the page setup conforms to the label layout.
5 Appendix
2. Make sure the printer properties, such as "paper size" and "direction", have been set correctly.
If the printout conforms to the sheet of labels, print the labels on the label paper.
If the printout does not conform, adjust the page setup and try printing again until
the correct printout is produced.
The method for 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:
l All the printouts must be on the label, and nothing should be printed on the backing layer
of the label page.
l Contents in the cells should be aligned in the center. In a single-line printout, the
dividing lines and the word "TO:" should not be covered by printed characters.
l When the cells are merged and the printouts are made in multiple lines, avoid covering
the word "TO:" when printing the text. Use the space bar to move the text to the next line.
5 Appendix
Writing Labels
Writing Tools
Font
To make sure the printouts are clear and legible, use black markers instead of ball-point pens to write the labels.
If no marker is available, black ball-point pens are allowed, although not recommended. Compared with ball-point pens, water-proof markers are better. When writing with a ball­point 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. Use the smaller nib to write the labels.
For the sake of legibility, use standard block letters and numbers as shown in Table 5-21 (Times New Roman).
Table 5-21 Standard typeface for handwriting
0
1 2 3 4 5 6 7 8
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 distinct and tidy.
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Placement of text on a label is shown in Figure 5-84.
Figure 5-84 Placement of text on a 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.
5 Appendix
Label for Signal Cables
l Choose 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 rectangular part with text 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
l Procedure 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
5 Appendix
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:
l The identification card is to the right of the cable in vertical cabling.
l The identification card is on the top of the cable in horizontal cabling. Make sure that the
label is facing out.
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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
Cable
AP6050DN & AP6150DN Hardware Installation and Maintenance Guide
Figure 5-87 Binding the label for the power cable
5 Appendix
Contents of Engineering Labels
Contents of Labels for Power Cables
Labels for power cables are affixed on only one side of the identification plates. On the labels, there is information (the part after the word "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.
l Area 1 contains the location information of the local end of the cable.
l Area 2 (with the word "TO:") contains the location information of the opposite end of the
cable.
l Area 3 has been folded up inside the label.
Figure 5-88 Printed parts on the label for signal cables
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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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In other words, the information in Area 1 at one end is the same as the information in Area 2 at the other end of the cable.
Precautions for Using Engineering Labels
When using labels, pay attention to the following points:
l When printing, writing, or attaching labels, keep the labels clean.
l Since the label paper is made of moistureproof material, ink-jet printers and ink pens
cannot be used to print and write labels.
l Labels should be attached neatly. New-type labels are L-shaped. If they are pasted at
incorrect locations or in the incorrect direction, the appearance of the device is affected.
l Power cable ties should be attached in the same positions on power cables, with
identification plates on the same side.
l The positions of "up", "down", "left" or "right" are all based on the viewpoint of the
engineering person who is working on the label.

5.4.2 Engineering Labels for Optical Fibers

5 Appendix
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:
l One is for the fiber that connects the optical interfaces on two devices.
l The 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 fibers between two devices
Content
MN-B-C-D­R/T
Meaning Example
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
C: physical slot number
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Numbered in bottom-up order with two digits, for example, 01.
Numbered in top-down and left-right order starting from 01. For example, 01 is the first slot at the top left of the chassis.
92
A01
R
TO:
01 05 01
G01
T
01
01
01
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Content Meaning Example
5 Appendix
Example of the Label
Figure 5-89 shows a sample label on an optical fiber.
Figure 5-89 Sample label on an optical fiber between two devices
D: optical interface number.
R: Receiving interface
T: optical transmitting interface
Numbered in top-down and left-right order, consistent with the port sequence number on the device.
-
The meaning of the label is listed in Figure 5-89.
l "A01-01-05-01-R" indicates that the local end of the optical fiber is connected to the
optical receiving interface 01 in slot 5, chassis 01 in the cabinet in 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 in slot 01, chassis 01 in the cabinet in 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 information on both sides of labels attached to an optical fiber between a
device and an optical distribution frame (ODF).
Table 5-23 Information on labels affixed to a fiber between a device and an ODF
Content
MN-B-C-D­R/T
Meaning Example
MN: cabinet
For example, A01.
number
B: chassis number
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Numbered in bottom-up order with two digits, for example, 01.
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ODF
R
TO:
G01 01 01
A01
R
01
05
01
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Content Meaning Example
5 Appendix
ODF-MN-B­C-R/T
C: physical slot number
D: optical interface number.
R: Optical receiving interface
T: optical transmitting interface
MN: row number and column number of an ODF
B: row number of the terminal device
Numbered in top-down and left-right order starting from 01. For example, 01 is the first slot at the top left of the chassis.
Numbered in top-down and left-right order, consistent with the port sequence number on the device.
-
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.
Range from 01 to 99, for example, 01-01.
Example of the Label
Figure 5-90 shows a sample label on an optical fiber.
Figure 5-90 Sample label on an optical fiber between the device and the ODF
C: column number of the terminal device
R: Optical receiving interface
T: optical transmitting interface
-
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