Huawei R250D-E Users Manual

R250D-E

Hardware Installation and Maintenance Guide

Issue 01

Date 2016-09-30

HUAWEI TECHNOLOGIES CO., LTD.

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

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

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

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

Email: support@huawei.com

http://www.huawei.com

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R250D-E Hardware Installation and Maintenance Guide

Intended Audience

This document describes hardware features of the R250D-E and provides basic installation methods.

This document is intended for:

l Network planning engineers

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

R250D-E 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 01 (2016-09-30)

Initial commercial release

About This Document

Calls attention to important information, best practices and tips.

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

, equipment

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iii

R250D-E Hardware Installation and Maintenance Guide 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........................................................................................................................... 10

2.5 Installing the Device..................................................................................................................................................... 11

2.5.1 Installing the Device into an 86-Type Box................................................................................................................ 11

2.5.2 Installing the Device on a Desk.................................................................................................................................13

2.6 Cable Connection......................................................................................................................................................... 13

2.7 Checking the Device After Installation........................................................................................................................ 15

2.8 Powering on the Device................................................................................................................................................15

3 Logging In to the Device............................................................................................................ 16

3.1 Logging In to the Device Using STelnet/Telnet........................................................................................................... 17

4 Hardware Failures....................................................................................................................... 18

4.1 A Device Fails to Be Powered On................................................................................................................................19

5 Appendix.......................................................................................................................................21

5.1 On-site Cable Assembly and Installation..................................................................................................................... 22

5.1.1 Cable Assembly Precautions..................................................................................................................................... 22

5.1.2 Assembling Power Cables......................................................................................................................................... 23

5.1.3 Assembling Ethernet Cables......................................................................................................................................31

5.1.4 Installing Cable Accessories......................................................................................................................................45

5.1.5 Replacing the Mold of the Crimping Tool.................................................................................................................61

5.2 Environmental Requirements for Device Operation.................................................................................................... 64

5.2.1 Environmental Requirements for an Equipment Room............................................................................................ 64

5.2.2 Requirements for Power Supply................................................................................................................................72

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5.3 Equipment Grounding Specifications...........................................................................................................................75

5.3.1 General Grounding Specifications

5.3.2 Grounding Specifications for an Equipment Room.................................................................................................. 75

5.3.3 Grounding Specifications for Devices.......................................................................................................................75

5.3.4 Grounding Specifications for Communications Power Supply.................................................................................76

5.3.5 Grounding Specifications for Signal Cables............................................................................................................. 77

5.3.6 Specifications for Laying Out Grounding Cables..................................................................................................... 77

5.4 Engineering Labels for Cables..................................................................................................................................... 78

5.4.1 Introduction to Labels................................................................................................................................................78

5.4.2 Engineering Labels for Optical Fibers.......................................................................................................................86

5.4.3 Engineering Labels for Network Cables................................................................................................................... 89

5.4.4 Engineering Labels for User Cables..........................................................................................................................90

5.4.5 Engineering Labels for Power Cables....................................................................................................................... 91

5.5 Guide to Using Optical Modules.................................................................................................................................. 94

5.6 Fault Tag....................................................................................................................................................................... 97

5.7 Installation Checklist.................................................................................................................................................... 98

.............................................................................................................................75

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About This Chapter

1 Product Overview

The R250D-E in Huawei Agile Distributed W high-density rooms and complex wall structures, such as schools, hotels, hospitals, and office meeting rooms. Huawei R250D-E uses an 86 mm plate in compliance with international standards and can be easily installed into an 86–type box in a room. It is equipped with a built-in antenna and a hidden indicator; therefore, installation of the R250D-E does not affect indoor decorations or designs. It also has an IEEE 802.11a/b/g/n/ac/ac Wave 2 wireless module and can work on both 5 GHz and 2.4 GHz frequency bands. It supports PoE power supply, and can be directly connected to a central AP and deployed in a room. The central AP and the R250D-E are connected through network cables, which greatly extends the coverage range, enhances flexibility in AP deployment and planning, and reduces the engineering construction costs.

1.1 Device Structure

1.2 Indicator Description

1.3 Basic Specifications

1.4 Ordering Information

i-Fi Solution is applicable to scenarios with

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Pass Through

GE0/PoE_IN

R250D-E Hardware Installation and Maintenance Guide

1.1 Device Structure

Figur

e 1-1 shows the appearance of the R250D-E.

Figure 1-1 Appearance of the R250D-E

1 Product Overview

Table 1-1 describes ports on the R250D-E.

able 1-1 Interface description

No. Name Description

1 DC 48V DC power socket: connects a 48 V power adapter to the

device.

2 USB Connects to a USB flash drive or other storage devices to

extend the storage space of the device. The USB2.0 standard is supported.

3 Default Reset button: restores factory settings and restarts the

device if you hold down the button more than 3 seconds.

4 Pass Through Pass Through port: connects to a network cable or phone

cable for transparent transmission.

5 GE2 to GE4 10/100/1000M port: connects to the wired Ethernet.

6 GE1/

PoE_OUT

10/100/1000M port: connects to the wired Ethernet and supports PoE output.

7 GE0/PoE_IN 10/100/1000M port: connects to the wired Ethernet and

supports PoE input.

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GE1/PoE_OUT GE2 GE3 Pass ThroughGE4

Indicator

R250D-E Hardware Installation and Maintenance Guide

NOTE

l The R250D-E supports the following power supply modes: PoE power supply and DC power

supply

l When the device uses the DC power supply, use a power adapter for power supply; otherwise, the

device may be damaged.

1.2 Indicator Description

LED Indicator

The R250D-E provides only a single indicator, as shown in Figure 1-2.

Figure 1-2 Indicator

1 Product Overview

NOTE

l The indicator is located inside the panel, which turns on after the AP is powered on.

l Indicator colors may vary slightly at dif

ferent temperature.

Table 1-2 Indicator description

Type Color Status Description

Default status after

-on

power

Green Steady on The AP is just

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powered on and the software is not started yet.

R250D-E Hardware Installation and Maintenance Guide

Type Color Status Description

1 Product Overview

Software startup status

Green Steady on after

blinking once

Running status Green Blinking once every

2s (0.5 Hz)

Blinking once every 5s (0.2 Hz)

After the system is reset and starts uploading the software, the indicator blinks green once. Until the software is uploaded and started, the indicator remains steady green.

The system is running properly

, the Ethernet connection is normal, and STAs are associated with the AP.

The system is running properly, the Ethernet connection is normal, and no STA is associated with the AP. The system is in low power consumption state.

Alarm Green Blinking once

Alarm Green every

0.25s (4 Hz)

l The software is

being upgraded.

l After the

software is uploaded and started, the AP working in Fit AP mode requests to go online on the AC and maintains this state until it goes online successfully on the AC (before the CAPW

AP link is established).

l The AP

registration fails (the CAPWAP link is disconnected).

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Type Color Status Description

Fault Red Steady on A fault that affects

1.3 Basic Specifications

able 1-3 provides basic specifications of the R250D-E.

1 Product Overview

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

Table 1-3 Basic specifications

Item Description

Physical specifications

Dimensions (H x W x D)

36mm x 86mm x 140mm

Weight 0.26kg

System memory

l 256MB DDR3L

l 32MB FLASH

Power specifications

Power input

l DC:48V±5%

l PoE power supply: in compliance with IEEE

802.3af/at

Environment specifications

Maximum power consumption

Operating temperature

11.5 W (excluding the output power of the USB port and PoE_OUT port)

NOTE

The actual maximum power consumption depends on local laws and regulations.

l -60 m to +1800 m: 0°C to +40°C

l 1800 m to 5000 m: T

every time the altitude increases 300 m.

emperature decreases by 1°C

Storage

-40°C to +70°C

temperature

Operating

5% to 95% (non-condensing)

humidity

IP rating IP20

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Item Description

1 Product Overview

Atmospheric pressure

1.4 Ordering Information

o place an order, contact technical support personnel.

Part Number Description

50082922 R250D-E Mainframe(11ac,2x2 Double

53 kPa to 106 kPa

Frequency

,Built-in Antenna)

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About This Chapter

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 Device

2.6 Cable Connection

2.7 Checking the Device After Installation

2.8 Powering on the Device

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2.1 Preparing for Installation

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

Safety Precautions

l T

ake 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

o 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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R250D-E Hardware Installation and Maintenance Guide

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 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 Remote Unit

l Screws

l Quick Start Guide

l Warranty card

l MAC address label

l SN label

NOTE

If a PoE adapter or a DC power adapter is required, you need to purchase it separately.

2.4 Determining the Installation Position

. Then, investigate causes and

l Do not deploy the device in places with high temperature, dust, noxious gas, unstable

voltage, much vibrations, or strong noise, or in places near flammable or explosive materials and interference sources such as a large radar station, radio station, and transformer station.

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2 AP Installation

l Install the device in a site that is free from leaking or dripping water

humidity, and take protective measures to prevent water from flowing into the equipment along the cable.

l Place the AP far away from electronic devices that may produce radio interference, such

as microwave ovens, antennas, and other radio communication devices. For details, see

Table 2-2.

l Install the device in hidden places and ensure that the device does not disturb daily work

and life of residents.

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

earthquake, electric power, and traffic. The selected site should comply with the environment design specifications of communications equipment.

Table 2-2 General anti-interference requirements

Scenario Deployment Distance Requirement

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.

, heavy dew, and

NOTE

If antennas are embedded into APs, the deployment distance requirements on the antennas are those on APs.

2.5 Installing the Device

NOTE

Remove the protective film on the surface before installation to prevent electrostatic discharge.

2.5.1 Installing the Device into an 86-Type Box

Installing the device in an 86-type box requires expansion screws delivered with the device. The procedure is as follows:

Use a screwdriver to remove the 86-type panel from the wall (skip this step if no 86-type panel is installed on the wall).

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GE1/PoE_OUTPass Through

1N•m

GE1/PoE_OUT GE2 GE3 Pass ThroughGE4

0.16N•m

ST2.5

GE1/PoE_OUT

GE2

GE3

Pass ThroughGE4

R250D-E Hardware Installation and Maintenance Guide

2. Insert a network cable into the GE0/PoE_IN port and a phone cable into the Pass Through port.

3. Connect the cables. For details, see 2.6 Cable Connection.

Open the front cover of the device, align screws on both sides with the screw holes in the 86-type box, and use the Phillips screwdriver to tighten the two screws.

2 AP Installation

5. Close the cover. If torx security screws are used to prevent theft, use a T9 torx security screwdriver to tighten the torx security screws into the device.

NOTE

You need to separately prepare the T9 torx security screwdriver.

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Pass Through

GE0/PoE_IN

R250D-E Hardware Installation and Maintenance Guide

2.5.2 Installing the Device on a Desk

Installing an AP on a desk requires a desktop stand. The procedures are as follows:

Connect the cables. For details, see 2.6 Cable Connection.

2. Align the top of the desktop stand with the grooves on the bottom cover of the AP. Slide the AP along the rail until the stand reaches the end of the grooves. Place the stand with the AP on the desk steadily.

2 AP Installation

NOTE

You need to separately purchase a desktop stand.

2.6 Cable Connection

able 2-3 describes the cable connections.

Figure 2-2 Appearance of the R250D-E

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Table 2-3 Cable connections

No. Cable or Device Description

1 DC power adapter When the device uses the DC power supply, use a power

2 USB cable Connects to a USB flash drive or other storage devices to

2 AP Installation

adapter for power supply; otherwise, the device may be damaged.

extend the storage space of the device. The USB port supports the USB 2.0 standard and a maximum output power of 2.5 W

3 Phone cable or

Network cable

4 Network cable

5 Network cable

The cable is inserted into a Pass Through port for transparent transmission.

l Connects to ST

As through downlink network ports.

l CAT5e cables or higher must be used.

l The length of a network cable cannot exceed 100 m.

However, when the GE1/PoE_OUT port is used for PoE output, the network cable inserted in this port cannot be longer than 20 m.

l The GE1/PoE_OUT port supports PoE output and

provides a maximum of 10 W power output.

NOTICE

l The GE1/PoE_OUT port complies with the category

detection mechanism of 802.3af.

l Do not insert a PoE input cable into the GE1/PoE_OUT port.

l Connects to the Ethernet port of an upper

-layer PSE

through the uplink network port.

l The GE0/PoE_IN port supports PoE input.

l CAT5e cables or higher must be used.

l The length of a network cable cannot exceed 100 m.

NOTE

l If the R250D-E needs to connect to the Ethernet, ensure that the Ethernet cable is working properly

If the Ethernet cable is not working properly, the R250D-E may fail to be powered on or fail to work. Before connecting an Ethernet cable to the R250D-E, use the cable test tool to check whether the cable is qualified. If the cable is unqualified, replace it.

l The R250D-E is powered by either the DC power supply or PoE power supply.

l When the R250D-E works in 802.3af power supply mode, the USB port and PoE_OUT port have no

power output; when it works in 802.3at or DC power supply mode, the USB port and PoE_OUT port have power output.

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.

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2 AP Installation

l Bundled cables are closely arranged, straight, tidy

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.

, and undamaged.

2.7 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. Check Item

1 The device is installed by strictly following the design draft. The

installation position meets space requirements, with maintenance space reserved.

2 The device is securely installed.

3 The power cables are intact and not spliced.

4 Terminals of the power cables are welded or cramped firmly.

5 All power 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 Connectors of signal cables are complete, intact, and tightly connected.

The signal cables are not damaged or broken.

8 Labels on cables are clear and correct.

2.8 Powering on the Device

After the device is powered on, observe indicator on the device 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

3.1 Logging In to the Device Using ST

elnet/Telnet

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3 Logging In to the Device

3.1 Logging In to the Device Using STelnet/Telnet

ou 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 the device 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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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

4 Hardware Failures

The SYS indicator of a device is of

Possible Causes

Power Supply Mode Possible Cause

Power supply using a power module

PoE power supply

l The device is powered of

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

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

5.1 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 T

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

5 Appendix

l If the cable jacket or insulation is visibly dirty

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.

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.

, clean it before assembly.

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.

– T

ry 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

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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echnologies Co., Ltd.

, strip a length of insulation coating C

R250D-E Hardware Installation and Maintenance Guide

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 Figur

Issue 01 (2016-09-30) Huawei Proprietary and Confidential

echnologies Co., Ltd.

e 5-3.

+ 115 hidden pages

Huawei R250D-E Users Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

About This Document

Contents

1 Product Overview

1.1 Device Structure

1.2 Indicator Description

1.3 Basic Specifications

1.4 Ordering Information

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 Device

2.5.1 Installing the Device into an 86-Type Box

2.5.2 Installing the Device on a Desk

2.6 Cable Connection

2.7 Checking the Device After Installation

2.8 Powering on the Device

3 Logging In to the Device

3.1 Logging In to the Device Using STelnet/Telnet

4 Hardware Failures

4.1 A Device Fails to Be Powered On

5 Appendix

5.1 On-site Cable Assembly and Installation

5.1.1 Cable Assembly Precautions

5.1.2 Assembling Power Cables