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4.1 An device Fails to Be Powered On

Fault Description

The SYS indicator of a device is off.

Possible Causes

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.

Troubleshooting Procedure

1.

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

2.

Check whether the configuration on the power sourcing equipment causes PoE power
supply errors, such as the PoE function is disabled or the power-off time range is
incorrectly set.

3.

Check whether the network cable or distribution frame is faulty.

4.

If the device still cannot be powered on, the device itself is faulty. Contact technical
support personnel or Huawei agent and ask them to replace the device.

R250D
Hardware Installation and Maintenance Guide

4 Hardware Failures

Issue 01 (2016-09-30)

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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Summary of Contents for 50082920

Page 1: ...R250D Hardware Installation and Maintenance Guide Issue 01 Date 2016 09 30 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ... 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 ens...

Page 3: ...ion 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 deterio...

Page 4: ...nd environment deterioration 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 R250D Hardware Installation and Maintenance Guide About This Document Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd iii ...

Page 5: ...ing on the Device 16 3 Logging In to the Device 17 3 1 Logging In to the Device Using STelnet Telnet 18 4 Hardware Failures 19 4 1 An device Fails to Be Powered On 20 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 t...

Page 6: ... 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 R250D Hardware Installation...

Page 7: ...s 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 are connected through network cables which greatly extends the coverage range enhances flexibility in AP deployment and planning and reduces t...

Page 8: ...rts the device if you hold down the button more than 3 seconds 2 GE1 10 100 1000M port connects to the wired Ethernet 3 GE0 PoE_IN 10 100 1000M port connect to the central AP and supports PoE power input 1 2 Indicator Description The R250D provides only one indicator as shown in Figure 1 2 R250D Hardware Installation and Maintenance Guide 1 Product Overview Issue 01 2016 09 30 Huawei Proprietary a...

Page 9: ...ed yet Software startup status Green Steady on after blinking once After the system is reset and starts uploading the software the indicator blinks green once Until the software is uploaded and started the indicator remains steady green Running status Green Blinking once every 2s 0 5 Hz The system is running properly the Ethernet connection is normal and STAs are associated with the AP R250D Hardw...

Page 10: ... 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 registration fails the CAPWAP link is disconnected Fault Red Steady on A fault that affects services has occurred such as a DRAM detection failure or system software loading failure The fault cannot be automatically rectified and must be rectified manually 1 3 Ba...

Page 11: ...vironment specifications Operating temperature l 60 m to 1800 m 0 C to 40 C l 1800 m to 5000 m Temperature decreases by 1 C every time the altitude increases 300 m Storage temperature 40 C to 70 C Operating humidity 5 to 95 non condensing IP rating IP20 Atmospheric pressure 53 kPa to 106 kPa 1 4 Ordering Information To place an order contact technical support personnel Part Number Description 5008...

Page 12: ... 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 R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 6 ...

Page 13: ... the aisles CAUTION Only the qualified personnel are permitted to install and remove the device and its accessories Before installation and operation read the safety precautions carefully Tool Preparation To install APs prepare tools listed in Table 2 1 Table 2 1 Tools Phillips screwdriver Protective gloves ESD gloves Slip proof glove Marker Hammer drill Claw hammer Diagonal pliers Wire stripper R...

Page 14: ... Safety helmet Safety belt Anti skid shoes 2 2 Installation Flowchart The following figure shows the process R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 8 ...

Page 15: ...tains the following items l Remote Unit l Expansion screws l Screw l Quick start guide l Warranty card l MAC address label l SN label 2 4 Determining the Installation Position 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 s...

Page 16: ...ment 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 Ins...

Page 17: ...ll Ø6 25mm 30mm 3 Connect the cables For details see 2 6 Cable Connection 4 Open the front cover of the device align screws on both sides with the plastic expansion tubes and use the Phillips screwdriver to tighten the two screws R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 11 ...

Page 18: ...river 2 5 2 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 1 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 R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprieta...

Page 19: ...he 86 type box and use the Phillips screwdriver to tighten the two screws 1N m M4 GE1 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 R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Lt...

Page 20: ...ty screwdriver 2 6 Cable Connection Table 2 3 describes the cable connections Figure 2 2 Appearance of the R250D 1 R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 14 ...

Page 21: ...t 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 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 I...

Page 22: ...wering 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 R250D Hardware Installation and Maintenance Guide 2 AP Installation Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 16 ...

Page 23: ...his Chapter 3 1 Logging In to the Device Using STelnet Telnet R250D Hardware Installation and Maintenance Guide 3 Logging In to the Device Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 17 ...

Page 24: ... 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 defaul...

Page 25: ... common methods for troubleshooting typical hardware faults 4 1 An device Fails to Be Powered On R250D Hardware Installation and Maintenance Guide 4 Hardware Failures Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 19 ...

Page 26: ...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 tec...

Page 27: ... 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 21 ...

Page 28: ... 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 out...

Page 29: ...omponents of an OT terminal and a power cable Figure 5 1 Components of an OT terminal and a power cable A Heat shrinkable tubing B Bare crimping terminal C Insulation D Conductor Procedure Step 1 Based on the cross sectional area of the cable conductor strip a length of insulation coating C to expose the conductor D of length L1 as shown in Figure 5 2 The recommended values of L1 are listed in Tab...

Page 30: ...nal Area of Conductor mm2 in 2 Value of L1 mm in 1 0 002 7 0 28 10 0 015 11 0 43 1 5 0 002 7 0 28 16 0 025 13 0 51 2 5 0 004 7 0 28 25 0 039 14 0 55 4 0 006 8 0 31 35 0 054 16 0 63 6 0 009 9 0 35 50 0 077 16 0 63 NOTE If you are proficient in assembling OT terminals and power cables you can obtain the value of L1 by comparing the part to be crimped with the power cable Step 2 Put the heat shrinkab...

Page 31: ...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 tub...

Page 32: ... 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 D Conductor of a power cable R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Cop...

Page 33: ...value of L as required Figure 5 7 Stripping a power cable JG terminal Table 5 2 Mapping between the cross sectional area of the conductor and the value of L Cross Sectional Area of Conductor mm2 in 2 Value of L mm in 16 0 025 13 0 51 25 0 039 14 0 55 35 0 054 16 0 63 50 0 077 16 0 63 Step 2 Put the heat shrink tubing onto the bare crimping terminal as shown in Figure 5 8 R250D Hardware Installatio...

Page 34: ...erminal and the conductor as shown in Figure 5 9 Figure 5 9 Crimping the joint parts of the bare crimping terminal and the conductor JG terminal Step 5 Push the heat shrink tubing 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 R250D Hardware Installation and Maintena...

Page 35: ...a power cable Procedure Step 1 Strip a part of the insulation to expose the cable conductor with a length of L1 as shown in Figure 5 12 The recommended values of L1 are listed in Table 5 3 NOTICE When you strip a power cable do not damage the conductor of the cable Figure 5 12 Stripping a power cable cord end terminal R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30...

Page 36: ...he cord end terminal onto the conductor and ensure that the conductor is aligned with the edge of the cord end terminal as shown in Figure 5 13 NOTICE After the conductor is fed into the cord end terminal the protruding part of the conductor must not be longer than 1 mm 0 04 in Figure 5 13 Putting the cord end terminal onto the conductor Step 3 Crimp the joint parts of the cord end terminal and th...

Page 37: ...n 2 Maximum Width of Crimped Terminal W1 mm in 0 25 0 0004 1 0 04 0 5 0 0008 1 0 04 1 0 0 0015 1 5 0 06 1 5 0 0023 1 5 0 06 2 5 0 0039 2 4 0 09 4 0 006 3 1 0 12 6 0 009 4 0 16 10 0 015 5 3 0 21 16 0 025 6 0 24 25 0 039 8 7 0 34 35 0 054 10 0 39 End 5 1 3 Assembling Ethernet Cables Assembling the Shielded RJ45 Connector and Ethernet Cable R250D Hardware Installation and Maintenance Guide 5 Appendix...

Page 38: ...wires Procedure Step 1 Fit the jacket of the connector onto the Ethernet cable as shown in Figure 5 16 Figure 5 16 Fitting the jacket of the connector onto the Ethernet cable Step 2 Remove a 30 mm 1 18 in long section of the jacket cut off the nylon twine inside the jacket and cut a no more than 5 mm 0 20 in cleft in the jacket as shown in Figure 5 17 R250D Hardware Installation and Maintenance Gu...

Page 39: ...al 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...

Page 40: ...wires through the wire holder C G Figure 5 21 Cable locations in a wire holder White Green Green White Orange Orange Blue White Blue White Brown Brown Step 6 Align the four pairs of cables in the holder as shown in Figure 5 22 The connections between the wires and the pins are shown in Figure 5 23 and listed in Table 5 5 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09...

Page 41: ...in 8 Pin 1 Table 5 5 Connections between wires and pins using a straight through cable as an example Matching Pins of Wires Wire Color 1 White Orange 2 Orange 3 White Green 4 Blue 5 White Blue 6 Green 7 White Brown R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 35 ...

Page 42: ...n 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Hua...

Page 43: ...Pushing the metal shell Step 11 To complete the assembly of the other end repeat Step 1 through Step 10 End Assembling an Unshielded RJ45 Connector and Ethernet Cable Context Figure 5 28 shows the components of an unshielded RJ45 connector and cable R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co ...

Page 44: ...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 C 16 White Orange White Green Orange Blue White Blue Green White Brown Brown Pin 8 Pin 1 R250D Hardware Installation and Mainten...

Page 45: ...ing 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...

Page 46: ...ontact strips are of the same height The height should be 6 02 0 13 mm 0 237 0 005 If a measuring tool is not available you can compare the connector with a standard connector Figure 5 32 shows an unqualified piece and Figure 5 33 shows a qualified piece NOTE All unqualified pieces must be crimped again Figure 5 32 Contact strips of different heights Figure 5 33 Contact strips of the same height S...

Page 47: ...ators 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 R250D Hardware Ins...

Page 48: ...witch to network devices Table 5 7 lists the connections of core wires in a straight through cable Table 5 7 Connections of core wires in a straight through cable RJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not 2 2 Orange Twisted 1 1 Orange White 6 6 Green Twisted 3 3 Green White 4 4 Blue Twisted 5 5 Blue White 8 8 Brown Twisted 7 7 Brown White l Crossover cables are connected in ...

Page 49: ...1 Feed both connectors of the cable into the ports of the cable tester Step 2 After the connectors are properly inserted turn on the tester If the indicators from 1 to G turn on simultaneously you can infer that the pins work normally and the wires are correctly connected NOTE Turn the switch to the S position to slow down lighting of the indicators so that you can see the indicators more clearly ...

Page 50: ... 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 t...

Page 51: ...e 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...

Page 52: ... 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 Requirements for Cable Routing l To protect cables remove the burrs i...

Page 53: ...ng 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confident...

Page 54: ...re 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 R250D Hardware Installation and Maintenance ...

Page 55: ...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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Co...

Page 56: ...f 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09...

Page 57: ... 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 R250D Hardware Installation and Maintenance Guide 5 Ap...

Page 58: ...3 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 52 ...

Page 59: ...nector 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technolog...

Page 60: ...er 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 R250D...

Page 61: ...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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 ...

Page 62: ...C 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technolog...

Page 63: ...he fiber connector as shown in Figure 5 63 Figure 5 63 Feeding the male connector into the female connector Step 4 A clicking sound indicates that the male connector is locked as shown in Figure 5 64 Figure 5 64 Installed LC connector R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 57 ...

Page 64: ...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 ...

Page 65: ...hell as shown in Figure 5 68 Figure 5 68 Disassembling an SC fiber connector End Installing an MPO Connector Procedure Step 1 Remove the dustproof cap of the MPO fiber connector and store it for future use Step 2 Align the core pin of the male connector with that of the female connector as shown in Figure 5 69 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei ...

Page 66: ...e and female connectors are securely installed as shown in Figure 5 70 Figure 5 70 Installed MPO fiber connector Step 4 To disassemble an MPO fiber connector hold the shell labeled PULL and remove the male connector as shown in Figure 5 71 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 60 ...

Page 67: ...nterclockwise as shown in Figure 5 72 Figure 5 72 Loosening two fastening screws Step 2 Hold the handles of the COAX crimping tools to open the self locking mechanism The jaw of the COAX crimping tools opens automatically as shown in Figure 5 73 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd ...

Page 68: ...4 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 62 ...

Page 69: ...ly 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei...

Page 70: ...tation 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 Const...

Page 71: ...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 wear resistant dustproof flame retardant sound insulated heat absorptive and...

Page 72: ...ipment 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 ho...

Page 73: ...o not place a fire hydrant in the equipment room but place it in the corridor or near the staircase Internal partition wall Separate the area where the equipment is installed from the equipment room door The partition wall can block some outside dust Installation position of the air conditioner Install air conditioner vents so that the air does not blow directly on equipment Other requirements Avo...

Page 74: ...ls 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 ...

Page 75: ...e 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 ...

Page 76: ... connect the power equipment to the collective ground cable of the telecommunication site or the protective ground bar of the equipment room Equipotential connection 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 grou...

Page 77: ...round 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 ...

Page 78: ...ures 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 5 2 2 Requirement...

Page 79: ...e 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 ...

Page 80: ...rated current Regulated voltage precision If the AC input voltage is in the range of 85 to 110 of the rated value and the load current is in the range of 5 to 100 of the rated value the output voltage of the rectifier ranges from 46 0 V to 56 4 V with the regulated voltage precision less than or equal to 1 Overshoot amplitude of switch on off Integral value of the DC output voltage 5 Peak noise vo...

Page 81: ...hare the same grounding conductor 2 The cable trays shells metal ventilation pipes metal doors and windows in the equipment room should be grounded for protection 3 The metal parts of the equipment which are electrically floating in normal conditions should be grounded for protection 4 The ground cable must be connected securely to the protective ground bar of the equipment room 5 Do not use other...

Page 82: ... 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...

Page 83: ... of the equipment room For cables inside the equipment room install surge protection devices at the interface to the equipment The PGND cable for the surge protection devices should be as short as possible 2 The incoming and outgoing signal cables to and from the office and unused wires inside the cable should be grounded for protection 3 The Tone Data Access TDA cable must pass through the Main D...

Page 84: ... 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 ...

Page 85: ... 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 plat...

Page 86: ...ain 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 R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technolog...

Page 87: ...irection 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 Lef...

Page 88: ...hen printing the text Use the space bar to move the text to the next line Writing Labels Writing Tools To make sure the printouts are clear and legible use 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 ball point pen do...

Page 89: ...ses 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...

Page 90: ...ces 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 hori...

Page 91: ... 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...

Page 92: ...ct 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...

Page 93: ...ne 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 opt...

Page 94: ... numbered from A to Z N The cabinet columns from left to right are numbered from 01 to 99 For example G01 is the ODF of row G and column 01 B row number of the terminal device Range from 01 to 99 for example 01 01 C column number of the terminal device R Optical receiving interface T optical transmitting interface Example of the Label Figure 5 90 shows a sample label on an optical fiber Figure 5 9...

Page 95: ...r For example A01 is the first cabinet in row A B chassis number Numbered in bottom up order with two digits for example 01 C physical slot number Numbered with two digits in top down and left right order For example 01 D network port number Numbered in top down and left right orders For example 01 MN Z MN cabinet number For example B02 is the second cabinet in row B Z Location number Fill in the ...

Page 96: ...to actual connections Label Example Figure 5 91 shows a sample label on an Ethernet cable Figure 5 91 Sample label on an Ethernet cable A01 TO 03 01 01 B02 03 01 Meaning of the label in Figure 5 91 l A01 03 01 01 indicates that one end of the network cable is connected to network interface 01 in slot 01 chassis 03 of the cabinet in row A column 01 in the equipment room l B02 03 01 indicates that a...

Page 97: ... 99 for example 01 01 C column number of the terminal device Example of the Label Figure 5 92 shows a sample label on a user cable Figure 5 92 Sample label on a user cable A01 TO 03 01 01 MDF G01 01 01 The meaning of the label in Figure 5 92 is as follows l A01 03 01 01 indicates that the local end of the user cable is connected to port 1 in slot 1 chassis 03 of the cabinet in row A column 01 in t...

Page 98: ...ow number or column number or the connector can be identified without them BC can be omitted It is unnecessary to identify the row and column number for BGND and PGND MN BC B BGND MN BC B PGND The label only carries location information about the destination direction of the power cable whereas information about the local end is unnecessary That is the label only carries location information about...

Page 99: ...e labels for PGND cables should be given in a similar way Engineering Labels for AC Power Cables These labels are affixed to both ends of an AC power cable that provides AC power supply to cabinets including 110 220 V PGND and BGND cables The 110 220 V AC cables and related PGND and BGND cables are covered with an insulating sheath so the labels need to contain only the word AC and the cabinet num...

Page 100: ...o use Huawei certified optical modules Obtain the electronic label of the optical module and contact technical support personnel to confirm whether it is a Huawei certified optical module 1 An optical module is not completely installed in position If the optical module is not completely installed in position and the latch boss is not secured the device cannot identify the optical module After the ...

Page 101: ...cal module when it is open and closed When inserting the optical module make sure that the release handle is closed At this time the latch boss locks the optical module After the optical module is inserted try pulling it out to see if it is installed in position If the optical module cannot be pulled out it is secured Figure 5 95 State of the release handle Close the release handle Open the releas...

Page 102: ...8 Using fibers to protect an optical module 3 Cover unused optical connectors with protective caps as shown in Figure 5 99 and then lay out fibers on the fiber rack or coil them in a fiber management tray to prevent fibers from being squeezed Figure 5 99 Installing a protective cap on a fiber 4 If a receptacle or an optical connector has not been used for a long time and is not covered with a prot...

Page 103: ...herwise the optical module will be burnt 2 When performing a self loop test use an optical attenuator Do not loosen the optical connector instead of the optical attenuator Precautions 1 The optical connector should be vertically inserted in the receptacle to avoid damages to the receptacle 2 Fibers must be inserted into optical modules of the corresponding type That is multimode fibers must be ins...

Page 104: ...erface cards returned the optical interfaces should be covered with protection caps l In general the analysis card will not be returned to you If you have any special requirements please contact Huawei l One Fault Tag should be adapted in one return category such as RMA Return Analysis l The items marked with are the mandatory fields that you must fill in 5 7 Installation Checklist Com pone nt No ...

Page 105: ...APs location IDs of the APs are provided at the cable connection points PoE power supply 1 General The proper PoE switch or power adapter is selected meeting AP power supply and onsite environment requirements 2 General To ensure that the PoE power meets requirements the PoE power supply device and APs must be connected through CAT5E and CAT6E network cables and the cable length cannot exceed 100 ...

Page 106: ... overall layout of the environment 6 Indoor AP Indoor APs are placed far away from windows and in dry environments with little dust and good ventilation There should be no inflammable materials in rooms The indoor temperature and humidity must be within acceptable ranges 7 Indoor AP When being mounted to a ceiling the APs must be fixed using the matching mounting brackets The APs cannot be hung in...

Page 107: ...ll with a ground point must be properly grounded 16 Outdoor AP Unused radio ports should be installed with 50 Ω RF loads 17 Outdoor AP Take lightning protection measures on outdoor APs the outdoor APs have built in 5 kV surge protectors If customers require a higher surge protection capability on the feeder ports they can purchase additional surge protective devices which need to be separately gro...

Page 108: ... cables on the air vents of the cabinet to avoid affecting subrack heat dissipation or cable lifetime 9 General Pigtail layout should meet the following requirements l Pigtails are not strained or twisted at the bent parts They are bundled by binding tape with appropriate force l Pigtails can be pulled back and forth easily inside the cable tie and are not bent at a right angle l Pigtails are not ...

Page 109: ...all be attached evenly and neatly The network cables shall be covered with waterproof PG tubes 16 Outdoor AP Cable connectors are secured on cables and sealed to prevent water intrusion The outlets of cable conduits on a wall are sealed by waterproof and flame retardant materials Drip loops meeting the minimum bending radius requirement are made on the network cable segment that stretches indoor 1...

Page 110: ... the antennas and feeder cables and keep the drain holes of antennas downwards 7 Outdoor antenna The pole used in antenna mounting should meet the following requirements Pole height 2000 mm Bottom pole diameter 220 mm Top pole diameter 120 mm Pole thickness 6 mm Depth of foundation 1500 mm The pole deployed outdoors must be reinforced with hot dip zinc to prevent water corrosion and rust 8 Outdoor...

Page 111: ...6 General Power cables and ground cables are routed straightly and properly bundled with sufficient slack at the bend part If the cables are fixed on a sharp mechanical part take protection measures 7 General The equipotential cables between the attaching cabinets shall be securely connected 8 General The lugs for the power cables and ground cables are soldered or crimped securely 9 General The lu...

Page 112: ...cal modules 3 General If a short distance optical fiber is used for a long distance optical module especially in loopback scenarios use an optical attenuator to prevent the optical module from being burnt R250D Hardware Installation and Maintenance Guide 5 Appendix Issue 01 2016 09 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 106 ...

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