Huawei RRU3260 Installation Manual Download Page 35

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Figure 3-22

Minimum clearance for a single tower-mounted RRU in standard or reverse

mode

Figure 3-23

Minimum clearance for a single tower-mounted RRU in side-mounted mode

3.5.2 Clearances for Three or More RRUs

This section describes the recommended and minimum clearances for three or more RRUs.

RRU3260
Installation Guide

3 Information About the Installation

Issue 10 (2015-12-30)

Huawei Proprietary and Confidential

Summary of Contents for RRU3260

Page 1: ...RRU3260 Installation Guide Issue 10 Date 2015 12 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: ...rganization 1 Changes in the RRU3260 Installation Guide This chapter describes the changes in the RRU3260 Installation Guide 2 Installation Preparations This chapter describes the reference documents tools and instruments that must be ready before the installation In addition it specifies the skills and prerequisites that installation engineers must have 3 Information About the Installation Before...

Page 4: ...ptions 9 Installing RRU Cables This chapter describes the procedure for installing RRU cables 10 Checking the RRU Hardware Installation After an RRU is installed check the hardware installation 11 Powering On an RRU After all the devices are installed check the power on status of an RRU 12 Appendix This section describes the procedure for adding an easy power receptacle pressfit type connector Con...

Page 5: ... in as user root Italic Book titles are in italics Courier New Examples of information displayed on the screen are in Courier New Command Conventions The command conventions that may be found in this document are defined as follows Convention Description Boldface The keywords of a command line are in boldface Italic Command arguments are in italics Items keywords or arguments in brackets are optio...

Page 6: ...y For example press Enter and press Tab Key 1 Key 2 Press the keys concurrently For example pressing Ctrl Alt A means the three keys should be pressed concurrently Key 1 Key 2 Press the keys in turn For example pressing Alt A means the two keys should be pressed in turn Mouse Operations The mouse operations that may be found in this document are defined as follows Action Description Click Select a...

Page 7: ...ween RRUs 31 4 Unpacking the Equipment 34 5 Installation Process 36 6 Optional Installing the Plastic Shells of the RRU 37 7 Hoisting an RRU and Related Cables onto a Tower 39 7 1 Hoisting an RRU onto a Tower 40 7 2 Hoisting Fiber Optic Cables onto a Tower 43 7 3 Hoisting Power Cables onto a Tower 46 8 Installing the RRU 49 8 1 Mounting Kits for an RRU 50 8 2 Installing the RRU on a Pole 51 8 2 1 ...

Page 8: ... Installing an RRU Alarm Cable 104 9 9 Opening the Cover Plate of an RRU Cabling Cavity 106 9 10 Installing an RRU Power Cable 108 9 11 Installing a CPRI Fiber Optic Cable 110 9 12 Closing the Cover Plate of an RRU Cabling Cavity 113 10 Checking the RRU Hardware Installation 116 11 Powering On an RRU 118 12 Appendix 120 12 1 Adding a Tool Less Female Connector Pressfit Type to the RRU Power Cable ...

Page 9: ...mation and no information is deleted from this issue 09 2015 08 30 This is the ninth official release Compared with issue 08 2015 03 23 this issue includes the following change Topic Change Description The whole document Optimized the contents in this document Compared with issue 08 2015 03 23 this issue does not include any new information and no information is deleted from this issue 08 2015 03 ...

Page 10: ...th issue 06 2014 10 24 this issue does not include any new information and no information is deleted from this issue 06 2014 10 24 This is the sixth official release Compared with issue 05 2014 06 30 this issue includes the following change Topic Change Description 3 4 Installation Scenarios Optimized the description of restrictions 8 Installing the RRU Optimized the description of the distance be...

Page 11: ...Modified the figure showing the U steel specifications Compared with issue 03 2013 12 23 this issue does not include any new information and no information is deleted from this issue 03 2013 12 23 This is the third official release Compared with issue 02 2013 06 26 this issue includes the following change Topic Change Description 7 1 Hoisting an RRU onto a Tower Optimized the procedure for hoistin...

Page 12: ...e 01 2013 04 28 this issue does not include any new information and no information is deleted from this issue 01 2013 04 28 This is the first official release RRU3260 Installation Guide 1 Changes in the RRU3260 Installation Guide Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 4 ...

Page 13: ...t be familiar with reference documents 2 2 Tools and Instruments You must prepare the following tools and instruments before the installation 2 3 Skills and Requirements for Onsite Personnel Onsite personnel must be qualified and trained Before performing any operation onsite personnel must be familiar with correct operation methods and safety precautions RRU3260 Installation Guide 2 Installation ...

Page 14: ...B User Guide l OCB 01M User Guide 2 2 Tools and Instruments You must prepare the following tools and instruments before the installation Hammer drill a φ12 bit ESD gloves Vacuum cleaner Heat gun Phillips screwdriver M3 to M6 Flat head screwdriver M3 to M6 Rubber mallet COAX crimping tool Wire stripper RRU3260 Installation Guide 2 Installation Preparations Issue 10 2015 12 30 Huawei Proprietary and...

Page 15: ...orque screwdriver 5 mm 5 mm M3 to M6 M3 to M6 Torque socket Multimeter Marker diameter 10 mm 0 39 in Measuring tape Inner hexagon wrench 5 mm Fixed pulley weight bearing capacity 500 kg or 1102 5 lb Lifting sling Hydraulic pliers RRU3260 Installation Guide 2 Installation Preparations Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 7 ...

Page 16: ... the following items l The customer s technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods l The number of onsite personnel depends on the engineering schedule and installation environment Generally only three to five onsite personnel are necessary RRU3260 Installation Guide 2 Installation Preparations Issue 10 2015 12 30 Huawei Proprieta...

Page 17: ...on describes six indicators on an RRU They indicate the running status 3 4 Installation Scenarios An RRU can be installed on a pole U steel angle steel wall or IFS06 Installation scenarios must meet heat dissipation and waterproofing requirements of the RRU 3 5 Installation Clearance Requirements of an RRU This section describes the requirements for the installation clearance of a single RRU and m...

Page 18: ... and power supply information from the configuration label on the cover plate and obtain the RRU name from the nameplate on the side of RRU that accommodates the conversion bracket Figure 3 3 shows the positions of the configuration label and nameplate on the RRU RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei...

Page 19: ...y band 4 Power supply type 5 Module name 3 2 RRU Ports This section describes ports on the RRU panels An RRU has a bottom panel cabling cavity panel and indicator panel Figure 3 4 shows the ports on the RRU panels RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 11 ...

Page 20: ...ly socket NEG CPRI0 Optical electrical port 0 connected to the BBU CPRI1 Optical electrical port 1 reserved 2 Ports at the bottom ANT_TX RXA TX RX port A supporting RET signal transmission ANT_RXC RX port C ANT_RXD Port RX port D ANT_TX RXB TX RX port B RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technolog...

Page 21: ... 2 Usage of RF ports Product Version TX RX Channe l Number of Used RF Ports Usage Remarks DBS3900 LTE V100R003C00 and later versions 1 x 2T4R 4 ANT_TX RXA ANT_TX RXB ANT_RXC and ANT_RXD are used together for one sector with ANT_TX RXA and ANT_RXC combined and ANT_TX RXB and ANT_RXD combined A single sector Figure 3 5 shows the recommended usage of the RF ports on an RRU used for DBS3900 LTE V100R0...

Page 22: ...tus Meaning RUN Green Steady on There is power supply but the module is faulty Steady off There is no power supply or the module is faulty Blinking on for 1s and off for 1s The board is functioning properly Blinking on for 0 125s and off for 0 125s Software is being loaded to the module or the module is not started ALM Red Steady on Alarms are generated and the module must be replaced RRU3260 Inst...

Page 23: ... green The CPRI link is functioning properly Steady red An optical module fails to transmit or receive signals because the optical module is faulty or the fiber optic cable is broken Blinking red on for 1s and off for 1s The CPRI link is out of lock because of a failure in clock lock between two modes or mismatched data rates over CPRI ports Steady off The optical module cannot be detected or the ...

Page 24: ...ails about the minimum clearance requirements see 3 5 2 Clearances for Three or More RRUs and 3 5 3 Installation Spacing Between RRUs l RRU mounting kits in assembled installation mode are not allowed in indoor scenarios NOTICE If the RRU is improperly installed heat dissipation of the RRU deteriorates and the RRU may not work properly as shown in Figure 3 6 Figure 3 6 Improperly installed RRUs Me...

Page 25: ...le When the horizontal distance between the main and auxiliary poles on a tower is equal to or greater than 810 mm 23 62 in the side mounted mode is recommended for installing RRUs on the auxiliary pole to meet the minimum clearance requirements Otherwise the standard mode is recommended for installing RRUs on the auxiliary pole Figure 3 7 Requirements for the vertical deviation angle of an RRU 1 ...

Page 26: ...on is recommended l Only a pole whose diameter ranges from 76 mm 2 99 in to 114 mm 4 49 in supports more than three RRUs l The recommended thickness of the wall of a pole is 3 5 mm 0 14 in or above Figure 3 9 shows a single RRU installed on a pole Figure 3 9 A single RRU installed on a pole Figure 3 10 shows two RRUs installed on a pole RRU3260 Installation Guide 3 Information About the Installati...

Page 27: ...e 3 11 U steel specifications NOTICE U steel supports the standard or reverse installation of a single RRU only Figure 3 12 shows an RRU installed on U steel RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 19 ...

Page 28: ...13 Angle steel specifications NOTICE Angle steel supports the standard or reverse installation of a single RRU only Figure 3 14 shows an RRU installed on angle steel RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 20 ...

Page 29: ... lbf in so that the bolts stay secured without damaging the wall NOTICE l It is recommended that the RRU be installed on a wall in standard mode l When RRUs are installed on a wall in side mounted mode do not combine mounting brackets for multiple RRUs as shown in Figure 3 15 Figure 3 15 Correct installation of mounting brackets for multiple RRUs installed on a wall in side mounted mode RRU3260 In...

Page 30: ...IFS06 supports a maximum of six RRUs when the ambient temperature is higher than or equal to the lowest operating temperature of the RRU and at least 10 C 50 F lower than the highest operating temperature of the RRU NOTE For details about the operating temperature of the RRU see section Technical Specifications of RRUs in 3900 Series Base Station Technical Description NOTICE The mounting brackets ...

Page 31: ...ure 3 19 show RRUs installed on an IFS06 Figure 3 18 Three RRUs installed on an IFS06 1 Height restricted scenario 2 Height unrestricted scenario RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 23 ...

Page 32: ...RUs 3 5 1 Clearance for a Single RRU This section describes the recommended and minimum clearance for a single RRU NOTICE If an RRU is installed on the bitumen ground the RRU must be at least 500 mm 700 mm or more as recommended away from the bitumen ground The following describes the space requirements for installing a single RRU on the non bitumen ground RRU3260 Installation Guide 3 Information ...

Page 33: ...or status and opening the cabling cavity cannot be properly conducted If the installation space is restricted leave the minimum clearance after installing the equipment Clearance for a Single RRU in Standard or Reverse Mode Figure 3 20 shows the clearance for a single RRU in standard or reverse mode Figure 3 20 Clearance for a single RRU in standard or reverse mode RRU3260 Installation Guide 3 Inf...

Page 34: ...side mounted mode Clearance for a Single Tower mounted RRU Figure 3 22 and Figure 3 23 show the clearance for a single tower mounted RRU in standard or reverse mode and in side mounted mode respectively RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 26 ...

Page 35: ...ngle tower mounted RRU in side mounted mode 3 5 2 Clearances for Three or More RRUs This section describes the recommended and minimum clearances for three or more RRUs RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 27 ...

Page 36: ... activities such as checking indicator status and opening the cabling cavity If the installation space is insufficient retain the minimum clearances after the installation Recommended Clearances for Three or More RRUs Installed on a Pole Figure 3 24 shows the recommended clearances for multiple RRUs installed in centralized mode Figure 3 24 Recommended clearances for three or more RRUs installed o...

Page 37: ...or More RRUs Installed on a Wall in Standard Mode Figure 3 26 shows the recommended clearances for multiple RRUs installed on a wall in standard mode RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 29 ...

Page 38: ...andard Mode Figure 3 27 shows the minimum clearances for three or more RRUs installed on a wall in standard mode Figure 3 27 Minimum clearances for three or more RRUs installed on a wall in standard mode RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 30 ...

Page 39: ...in side mounted mode 3 5 3 Installation Spacing Between RRUs This section describes the horizontal and vertical spacing between RRUs Recommended Horizontal Spacing Between RRUs Figure 3 29 shows the recommended horizontal spacing between RRUs Figure 3 29 Recommended horizontal spacing between RRUs RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietar...

Page 40: ...tween RRUs Figure 3 31 shows the recommended vertical spacing between RRUs Figure 3 31 Recommended vertical spacing between RRUs Minimum Vertical Spacing Between RRUs Figure 3 32 shows the minimum vertical spacing between RRUs RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 32 ...

Page 41: ...re 3 32 Minimum vertical spacing between RRUs RRU3260 Installation Guide 3 Information About the Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 33 ...

Page 42: ...oves NOTICE l After a cabinet or an BBU is unpacked it must be powered on within 7 days l After an RRU is unpacked it must be powered on within 24 hours Procedure Step 1 Check the total number of articles in each case according to the packing list If Then The total number tallies with the packing list Go to Step 2 The total number does not tally with the packing list Find out the cause and report ...

Page 43: ...Huawei office CAUTION l To protect the equipment and prevent damage to the equipment you are advised to keep the unpacked equipment and packing materials indoors take photos of the stocking environment packing case or carton packing materials and any rusted or eroded equipment and then file the photos l Verify that the insulation layers of all RRU cables are intact If the insulation layers are dam...

Page 44: ...king the RRU hardware installation and powering on the RRU Figure 5 1 shows the process of installing an RRU Figure 5 1 Process of installing an RRU RRU3260 Installation Guide 5 Installation Process Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 36 ...

Page 45: ...ecessary Procedure Step 1 Use an M6 Phillips screwdriver to loosen the two screws on the metal sheet of the RRU and remove the metal sheet as shown in Figure 6 1 Figure 6 1 Removing the metal sheet 1 Screw 2 Metal sheet RRU3260 Installation Guide 6 Optional Installing the Plastic Shells of the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 37 ...

Page 46: ...om 1 Buckle 2 Screw Step 3 Use four hex screws to secure the plastic shells onto the RRU and use an M6 hex key wrench to tighten the screws to 2 8 N m 24 78 lbf in as shown in Figure 6 3 Figure 6 3 Installing the plastic shells of the RRU End RRU3260 Installation Guide 6 Optional Installing the Plastic Shells of the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Techn...

Page 47: ...enarios the RRU can be installed on a pole U steel or angle steel 7 2 Hoisting Fiber Optic Cables onto a Tower This section describes the procedure for hoisting fiber optic cables onto a tower and the precautions that must be taken 7 3 Hoisting Power Cables onto a Tower This section describes the procedure for hoisting power cables onto a tower and the precautions that must be taken RRU3260 Instal...

Page 48: ... the weight of the RRU l The routing and protection of power cables should follow the local safety regulations industry standards and enterprise standards of the operator Procedure Step 1 After climbing up to the tower technician A secures the fixed pulley to the tower platform support and leads the lifting sling through the fixed pulley Step 2 Technician C binds the mounting kits using the liftin...

Page 49: ...inds the RRU using the lifting sling and traction sling as shown in Figure 7 2 The binding methods in Figure 7 3 and Figure 7 4 are incorrect Figure 7 2 Binding the RRU 1 Handle 2 Lifting sling 3 Traction eye 4 Traction sling Figure 7 3 Incorrect binding method 1 RRU3260 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower Issue 10 2015 12 30 Huawei Proprietary and Confidential Cop...

Page 50: ...ician C pulls the traction sling outwards to protect the RRU from colliding with the tower Figure 7 5 Hoisting the RRU onto the tower 1 Lifting sling 2 Fixed pulley 3 Traction sling RRU3260 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 42 ...

Page 51: ...te and main bracket to 5 N m 44 25 lbf in For detailed operations see steps 4 and 5 in 8 2 1 Installing a Single RRU Step 9 Untie the lifting sling and traction sling NOTE The procedure for hoisting the RRU and its mounting kits onto the tower is for your reference only End 7 2 Hoisting Fiber Optic Cables onto a Tower This section describes the procedure for hoisting fiber optic cables onto a towe...

Page 52: ... tower platform support and leads the lifting sling through the fixed pulley 2 Installation engineer B places the fiber coiler for coiling fiber optic cables on the fiber spools and installation engineer D lead the lifting sling through the stretch sling of the fiber optic cables and use the other sling as a traction sling to secure the cables 4 m 13 12 ft away from the lifting sling as shown in F...

Page 53: ... B rotates the fiber spools at the speed of 5 m 16 4 ft to 15 m 49 21 ft per minute to coil the fiber optic cables 4 Installation engineer C pulls the lifting sling downwards and installation engineer D pulls the traction sling outwards to protect the fiber optic cables from colliding with the tower RRU3260 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower Issue 10 2015 12 30 Hu...

Page 54: ...and the precautions that must be taken Context Cabling requirements for power cables are met For details see 9 1 Cabling Requirements The procedure for adding a connector to the RRU power cable on the RRU side is done under the tower Procedure Step 1 Hoist the power cables onto the tower as shown in Figure 7 9 Figure 7 9 Hoisting power cables onto the tower 1 Lifting sling 2 Fixed pulley RRU3260 I...

Page 55: ...an example The actual connector may vary according to the situation Figure 7 10 Binding cable ties 3 Installation engineer B wraps the power cable connector with a layer of PVC insulation tape as shown in Figure 7 11 NOTE Wrap the PVC insulation tape from 30 mm 1 18 in away from one end of the connector until it reaches the other end of the connector The total length of the wrapped connector is 10...

Page 56: ...ng with the tower Step 2 Secure the power cables to the tower vertically using cable clips Step 3 Remove the cable ties PVC insulation tape and lifting sling NOTE The procedure for hoisting the power cables onto the tower is for your reference only End RRU3260 Installation Guide 7 Hoisting an RRU and Related Cables onto a Tower Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huaw...

Page 57: ...h piece of U steel allows only one RRU to be installed in standard or reverse mode 8 4 Installing the RRU on Angle Steel This section describes the procedure and precautions for installing the RRU on angle steel An RRU can be installed on angle steel secured on the ground or a tower Each piece of angle steel allows only one RRU to be installed in standard or reverse mode 8 5 Installing the RRU on ...

Page 58: ...e view of an RRU 1 Front view 2 Side view 3 Attachment plate Figure 8 2 shows the bracket assembly for an RRU Figure 8 2 12 L blade RRU mounting kit 1 Plastic cap 2 Standard M10 nut 3 Spring washer 4 Thick flat washer 5 Square neck bolt RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 50 ...

Page 59: ...s secured properly NOTICE l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage during the installation Procedure Step 1 Determine a position for installing the mounting brackets l If the pole must be installed on a tower determine a position for installing the mounting brackets ...

Page 60: ...he RRU mounting brackets NOTE Verify that the arrows on the mounting brackets are pointing up 1 Adjust the position of the nut and remove one end of the square neck bolt from the slot on the auxiliary bracket 2 Slide the mounting brackets onto the pole horizontally and insert the square neck bolt into the slot Step 3 Use a 16 mm 0 63 in M10 torque wrench to tighten the nuts to 40 N m 354 03 lbf in...

Page 61: ...the RRU onto the main bracket as shown in Figure 8 6 Figure 8 6 Installing the RRU onto the main bracket Step 5 Use an inner hexagon torque screwdriver to tighten the captive screw into the holes on the top of the attachment plate and main bracket to 5 N m 44 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 7 RRU3260 Installation Guide 8 Installing th...

Page 62: ...ot stand the RRU upright because the RF ports cannot support the weight of the RRU l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage during the installation Procedure Step 1 Install the first RRU onto the main bracket as shown in Figure 8 8 For details see 8 2 1 Installing a Single RRU RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Pro...

Page 63: ...e 8 9 Figure 8 9 Removing the RRU main bracket 1 Main bracket 2 Pole installation bracket Step 3 Install the removed main bracket on one side of the first main bracket as shown in Figure 8 10 NOTICE The second main bracket must be installed with the opening ends of U shaped slots on both sides facing downwards RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary a...

Page 64: ...of adding RRUs as shown in Figure 8 11 Figure 8 11 Connect to the main mounting bracket for installing a common RRU 1 Main mounting bracket for a 12 L blade RRU 2 Main mounting bracket for a common RRU Step 4 Install the second RRU onto the main bracket as shown in Figure 8 12 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei T...

Page 65: ...crew into the holes of the attachment plate and main bracket to 5 N m 44 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 13 Figure 8 13 Securing the captive screw into the connection hole RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 57 ...

Page 66: ...nsert the removed screw into the hole on the top of the first RRU and use an M6 torque screwdriver to tighten the screw to 5 N m 44 25 lbf in End 8 2 3 Installing Three or More RRUs The section describes the procedure and precautions for installing three or more RRUs on a pole Prerequisites The hoist clamp on the main bracket is secured properly NOTICE l Do not stand the RRU upright because the RF...

Page 67: ...ed Procedure Step 1 Install the two RRUs as shown in Figure 8 15 For details see 8 2 2 Installing Two RRUs Figure 8 15 Two RRUs installed on a pole Step 2 Use an M6 inner hexagon screwdriver to remove the four inner hexagon screws from the second set of mounting brackets and remove the main bracket from the auxiliary bracket as shown in Figure 8 16 RRU3260 Installation Guide 8 Installing the RRU I...

Page 68: ...nection holes on the top of the attachment plate and main bracket for the RRU with a torque of 5 N m 44 25 lbf in as shown in Figure 8 17 NOTICE The third main bracket must be installed with the opening ends of U shaped slots on both sides facing downwards Figure 8 17 Installing the third RRU onto the third main bracket RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Pro...

Page 69: ...racket for a 12 L blade RRU 2 Main mounting bracket for a common RRU Step 4 Install the metal sheet for neighboring RRUs as shown in Figure 8 19 Figure 8 19 Installing the metal sheet 1 Screw 2 Metal sheet 1 Use an M6 Phillips screwdriver to loosen the screw on the metal sheet farther from the handle of the first RRU and remove the screw RRU3260 Installation Guide 8 Installing the RRU Issue 10 201...

Page 70: ...et of RRU mounting brackets and maintain a space equal to or greater than 80 mm 3 15 in between the two sets of brackets as shown in Figure 8 20 Figure 8 20 Installing the second set of RRU mounting brackets Step 6 Install the fourth RRU onto the fourth main bracket use an inner hexagon torque screwdriver to tighten the captive screw into the holes of the attachment plate and main bracket to 5 N m...

Page 71: ...ured on a tower the RRU and its mounting brackets are hoisted onto the tower For details see 7 1 Hoisting an RRU onto a Tower The hoist clamp on the main bracket is secured properly NOTICE l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage during the installation Context Figur...

Page 72: ...or installing the mounting brackets l If the RRU must be installed on U steel secured on a tower see 3 5 1 Clearance for a Single RRU to determine a position l If the RRU must be installed on U steel secured on the ground see Figure 8 23 to determine a position RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co L...

Page 73: ... RRU mounting brackets NOTE Verify that the arrows on the mounting brackets are pointing up 1 Adjust the position of the nut and remove one end of the square neck bolt from the slot on the auxiliary bracket 2 Slide the mounting brackets onto the U steel horizontally and insert the square neck bolt into the slot Step 3 Use a 16 mm 0 67 in M10 torque wrench to tighten the nuts to 40 N m 354 03 lbf i...

Page 74: ... mounting brackets Step 4 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU reinstall the attachment plate onto the rear of the RRU and tighten the four stainless screws to 5 N m 44 25 lbf in as shown in Figure 8 26 Figure 8 26 Installing the attachment plate onto the rear of the RRU RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei P...

Page 75: ...rew into the holes on the top of the attachment plate and main bracket to 5 N m 44 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 28 Figure 8 28 Securing the captive screw into the connection hole RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 67 ...

Page 76: ... main bracket is secured properly NOTICE l Do not stand the RRU upright because the RF ports cannot support the weight of the RRU l Place a foam pad or cardboard under the RRU to protect the RRU housing from damage during the installation Context Figure 8 29 shows the top view of the RRU installed on angle steel Figure 8 29 Top view of the RRU 1 Angle steel Procedure Step 1 Determine a position fo...

Page 77: ...ce Requirements of an RRU needs to be provided Step 2 Install the RRU mounting brackets as shown in Figure 8 31 Figure 8 31 Installing the RRU mounting brackets NOTE Verify that the arrows on the mounting brackets are pointing up 1 Adjust the position of the nut and remove one end of the square neck bolt from the slot on the auxiliary bracket 2 Slide the mounting brackets onto the angle steel hori...

Page 78: ...ng between the brackets on both sides and ensure that the spacing is the same on the two sides Figure 8 32 Securing the RRU mounting brackets Step 4 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU reinstall the attachment plate onto the rear of the RRU and tighten the four stainless screws to 5 N m 44 25 lbf in as shown in Figure 8 33 RRU3260 Installation G...

Page 79: ... Step 6 Use an inner hexagon screwdriver to tighten the captive screw into the holes on the top of the attachment plate and main bracket to 5 N m 44 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 35 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 71 ...

Page 80: ...sing from damage during the installation Context The wall on which RRUs are installed must meet the following requirements l For each RRU the wall must be able to bear a weight four times the RRU s weight and the bolts pulling force of 1 25 kN 281 25 lbf vertical to the wall l Expansion anchor bolts must be tightened to 30 N m 265 52 lbf in so that the bolts stay secured without damaging the wall ...

Page 81: ...n M10 torque wrench to loosen the nuts on the two square neck bolts and remove the plastic cap nuts spring washers flat washers square neck bolts and pole installation bracket from the auxiliary bracket Step 2 Place the pole installation bracket against the installation position use a level to verify that the pole installation bracket is placed horizontally and then mark anchor points with a marke...

Page 82: ...insert expansion anchor bolt assemblies as shown in Figure 8 38 Figure 8 38 Drilling a hole and inserting expansion anchor bolt assemblies 1 M10x80 bolt 2 Nut 3 Spring washer 4 Flat washer 5 Expansion tube 1 Use a hammer drill with a Ф12 bit to drill holes vertically at the marked anchor points with the depth ranging from 55 mm 2 17 in to 60 mm 2 36 in use a vacuum cleaner to clear the dust out fr...

Page 83: ...ence NOTICE After dismantling an expansion anchor bolt ensure that the top of the expansion tube is on the same level as the wall Otherwise the device cannot be installed on the wall evenly and securely Step 4 Install the pole installation bracket on the expansion anchor bolts place the flat washers spring washers and nuts through the expansion anchor bolts in sequence and then use a 16 mm 0 63 in...

Page 84: ...are firmly secured as shown in Figure 8 40 Figure 8 40 Installing the main bracket 1 Main bracket 2 Pole installation bracket Step 6 Use an inner hexagon screwdriver to remove the attachment plate from one side of the RRU reinstall the attachment plate onto the rear of the RRU and tighten the four stainless screws to 5 N m 44 25 lbf in as shown in Figure 8 41 RRU3260 Installation Guide 8 Installin...

Page 85: ... Step 8 Use an inner hexagon screwdriver to tighten the captive screw into the holes on the top of the attachment plate and main bracket to 5 N m 44 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 43 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 77 ...

Page 86: ...le beams on an IFS06 can be moved up and down to fit for heights of RRUs l RRUs can be installed on an IFS06 only when the ambient temperature is higher than or equal to the lowest working temperature of the RRU and at least 5 C 41 F lower than the highest working temperature of the RRU In this scenario the IFS06 supports at least three RRUs When the ambient temperature is higher than or equal to ...

Page 87: ...ure 8 44 Disassembling the mounting brackets 1 Main bracket 2 Square neck bolt 3 Pole installation bracket 4 Auxiliary bracket 5 Flat washer 6 Spring washer 7 Nut 8 Plastic cap 1 Use an M6 inner hexagon torque screwdriver to remove the four inner hexagon screws on the pole installation bracket and remove the main bracket from the pole installation bracket 2 Use an M10 torque wrench to loosen the n...

Page 88: ... installation bracket as shown in Figure 8 45 Figure 8 45 Installing the pole installation bracket in height restricted scenarios 1 Spring washer 2 Rubber washer l Height unrestricted scenarios Install the pole installation bracket as shown in Figure 8 46 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 80 ...

Page 89: ...er hexagon screwdriver to tighten four M6x16 screws to 5 N m 44 25 lbf in so that the main bracket and pole installation bracket are firmly secured as shown in Figure 8 47 Figure 8 47 Installing the main bracket 1 Main bracket 2 Pole installation bracket RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 81 ...

Page 90: ... 25 lbf in so that the attachment plate and main bracket are firmly secured as shown in Figure 8 48 Figure 8 48 Installing the RRU onto the main bracket Step 5 Install the RRUs on the lower level from left to right as shown in Figure 8 49 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 82 ...

Page 91: ...ng temperature of the RRU and at least 10 C 10 F lower than the highest operating temperature of the RRU repeat the preceding steps to install the RRUs on the higher level as shown in Figure 8 50 RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 83 ...

Page 92: ...Figure 8 50 Installing RRUs on the higher level End RRU3260 Installation Guide 8 Installing the RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 84 ...

Page 93: ...ing an RRU RF jumper 9 7 Installing an RRU AISG Multi Wire Cable and AISG Extension Cable This section describes the procedures for installing an RRU AISG multi wire cable and AISG extension cable 9 8 Installing an RRU Alarm Cable This section describes the procedure for installing an RRU alarm cable 9 9 Opening the Cover Plate of an RRU Cabling Cavity This section describes the procedure for open...

Page 94: ...ribes the procedure for closing the cover plate of an RRU cabling cavity RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 86 ...

Page 95: ...ust be bound together l Different types of cables must be separately laid out and bound with a minimum distance of 30 mm 1 18 in from each other l The cables must be bound tightly and neatly The sheaths of the cables must not be damaged l The cable ties must face the same direction and those at the same horizontal line must be in a straight line l The excess of the indoor cable ties is cut off The...

Page 96: ...cable trough and connect the tubes to the cable holes in the base l When routing RRU cables ensure that the highest positions of the routes of all RRU cables except RF cables and AISG cables must be lower than the bottom of the RRU l Use clips to secure cables outdoors For the method of installing a clip see the installation guide delivered with the clip l Arrange cables neatly along the routing d...

Page 97: ...ollowing figure shows the cables secured on a cable tray Figure 9 2 Cables secured on a cable tray 1 3 hole clip 2 6 hole clip The following figure shows the cables secured on a tower RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 89 ...

Page 98: ...place the cables rather than adding connectors or soldering joints to lengthen the cables l Cables can only be laid out under well planned instructions The cabling activities of fiber optic cables are allowed only when qualified personnel and communication facilities are available l Do not circle and twist cables RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprie...

Page 99: ...each other l Switches or fuses must not be installed on the PGND cables l Other devices must not be used for electrical connections of the PGND cables l All the metal parts in the housing of the equipment must be reliably connected to the ground terminal Cabling of E1 cables l E1 cables must not cross power cables PGND cables or RF cables when laid out If transmission cables are laid out with powe...

Page 100: ...n a cabinet or a piece of equipment use binding straps to bind it and then use cable ties to secure the binding straps to the cabinet or equipment Ensure that the fiber optic cables can flexibly move in the cable ties Do not bend the fiber optic cables sharply The following figure shows how to bind the fiber optic cables correctly Figure 9 5 Binding fiber optic cables l When coiling fiber optic ca...

Page 101: ...urrounding the platform Ensure that there is no excessively long distance between the equipment and the position where the cable is secured l Coil the excess of the fiber optic cables near the equipment on the tower before securing the cables on the tower 9 2 Cable Connections This section describes the cable connections for a single RRU and multiple RRUs NOTE l A lower level RRU obtains power dir...

Page 102: ...umper 3 RRU AISG multi wire cable 4 RRU AISG extension cable 5 RRU power cable 6 CPRI fiber optic cable 7 RRU alarm cable Figure 9 10 shows the cable connections for multiple RRUs RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 94 ...

Page 103: ...fiber optic cable 9 3 Installation Process This section describes the process of installing RRU cables Figure 9 11 shows the process of installing RRU cables RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 95 ...

Page 104: ...on RRU PGND Cable OT terminal M6 16 mm2 or 0 025 in 2 Ground terminal on the RRU OT terminal M8 16 mm2 or 0 025 in 2 Ground terminal on the ground bar RRU Power Cable Tool less female connector pressfit type NEG and RTN ports on the RRU Depending on the power supply equipment External power equipment RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Conf...

Page 105: ...r on the RCU or on the AISG extension cable RRU AISG Extension Cable Standard AISG male connector Standard AISG female connector on the AISG multi wire cable Standard AISG female connector Standard AISG male connector on the RCU 9 5 Installing an RRU PGND Cable This section describes the procedure for installing an RRU PGND cable Context The cross sectional area of an RRU PGND cable is 16 mm2 0 02...

Page 106: ...le to the ground terminal at the RRU bottom and the M8 OT terminal at the other end to the external ground bar as shown in Figure 9 12 Figure 9 12 Installing an RRU PGND cable NOTE Crimp OT terminals in correct positions as shown in Figure 9 13 Figure 9 13 Correct position of an OT terminal Step 3 Label the installed cables according to the instructions in Attaching a Cable Tying Label End RRU3260...

Page 107: ...E On AC powered electric railways such as high speed railways when leaky cables are connected to RRUs installed in tunnels high voltage resistance DC blocks must be installed between RRU RF jumpers and the leaky cables to protect the RRUs against damage Step 2 Link the other end of the RF jumper to the external antenna system Step 3 Waterproof the connectors of the RF jumper by referring to Figure...

Page 108: ... a position 50 mm 1 97 in away below the bottom of the connector to the top of the connector first from bottom up then from top down and finally from bottom up Cut off the redundant tape after three layers are wrapped Wrap each layer of tape around the connector tightly 2 Wrap three layers of PVC insulation tape Start the wrapping at a position 30 mm 1 18 in away below the bottom of the waterproof...

Page 109: ...three layers of waterproof tape from bottom up then from top down and finally from bottom up Do not cut the tape until all the three layers of the tape are already wrapped Cut off the redundant tape after three layers are wrapped Wrap each layer of tape around the connector tightly 3 Wrap three layers of PVC insulation tape Wrap each connector with three layers of waterproof tape from bottom up th...

Page 110: ...dure l Install an AISG multi wire cable that is not configured with an AISG extension cable a Use an M3 flat head screwdriver to loosen the screws on the dustproof cap on the RET port and remove the dustproof cap b Link the waterproofed DB9 connector at one end the AISG multi wire cable to the RET port on the RRU bottom as shown in Figure 9 17 Figure 9 17 Installing an RRU AISG multi wire cable c ...

Page 111: ...9 connector at one end of the AISG multi wire cable to the RET port on the RRU bottom and link the other end to the standard AISG male connector of the AISG extension cable as shown in Figure 9 18 Figure 9 18 Installing an RRU AISG multi wire cable c Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof DB9 connector to 0 4 N m 3 54 lbf in d Connect the other end of t...

Page 112: ...able This section describes the procedure for installing an RRU alarm cable Procedure Step 1 Use an M3 Phillips screwdriver to loosen the screws on the dustproof cap on the EXT_ALM port and remove the dustproof cap Step 2 Connect the waterproof DB15 connector at one end of the RRU alarm cable to the EXT_ALM port on the RRU as shown in Figure 9 20 RRU3260 Installation Guide 9 Installing RRU Cables ...

Page 113: ...es from the cord end terminals before connecting the cord end terminals to devices as shown in Figure 9 21 l Use insulating adhesive tapes to wrap cord end terminals that are not in use and fix them at a proper position based on the onsite situations This prevents false alarm reporting and equipment damage due to contact of exposed cables Figure 9 22 shows the method for handling cord end terminal...

Page 114: ...scribes the procedure for opening the cover plate of an RRU cabling cavity Procedure Step 1 Wear ESD gloves NOTICE Take proper ESD protection measures for example wear ESD gloves to prevent electrostatic damage to the boards modules or electronic components Step 2 Use an M5 Phillips screwdriver to loosen the three screws on the cover plate of the RRU cabling cavity and open the cover plate as show...

Page 115: ...trough for the fiber optic cable Step 3 Loosen the screws on the clip using an M4 Phillips screwdriver and open the clip as shown Figure 9 24 NOTE Open the clip only for the associated cable Figure 9 24 Opening clips RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 107 ...

Page 116: ...de Context If a power device provided by the customer is used the recommended specification of the circuit breaker on this power device is 15 A to 30 A Table 9 2 describes the RRU power cable Table 9 2 RRU power cable Cable On the RRU Side On the Power Device Side Pow er Devi ce Color RRU power cable Tool less female connector pressfit type Tool less female connector pressfit type EPU A cable with...

Page 117: ...positive and negative poles may damage the RRU or cause personal injury Procedure Step 1 Connect the tool less female connector pressfit type at one end of the RRU power cable to the power supply socket on the RRU as shown in Figure 9 25 Figure 9 25 Installing an RRU power cable NOTICE Ensure that the exposed shield layer of the power cable is properly tightened using the clip Step 2 Connect the c...

Page 118: ... section describes the procedure for installing a CPRI fiber optic cable Prerequisites Before the installation single mode optical modules can be distinguished from multi mode optical modules in either of the following ways l SM and MM labels on an optical module SM indicates a single mode optical module and MM indicates a multi mode optical module l Color of the puller on an optical module Blue i...

Page 119: ...lls to fail to provide services l To avoid any damage to fiber optic cables the cables connected to the RRU must be installed according to the installation process For details about the installation process see 9 3 Installation Process l When installing CPRI optical cables for dual fiber bidirectional optical modules remove the dustproof cap from the optical cable and connect the end labeled 1A an...

Page 120: ...al cable divide the DLC end into two LC ends and connect the end labeled 1A to the optical module on the RRU side as shown in Figure 9 28 Connect the other LC end labeled 2A to the CPRI port on the main control board such as the GTMU or baseband processing board such as the WBBP in the BBU RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Co...

Page 121: ...Plate of an RRU Cabling Cavity This section describes the procedure for closing the cover plate of an RRU cabling cavity Procedure Step 1 Close the clips for the installed cables Use an M4 torque screwdriver to tighten the screws on each clip to 1 4 N m 12 39 lbf in as shown in Figure 9 29 NOTICE Ensure that the exposed shield layer of the power cable is properly tightened using the clip RRU3260 I...

Page 122: ... Correct placement of waterproof blocks Step 3 Close the cover plate of the RRU cabling cavity Use an M5 torque screwdriver to partially tighten the screws on the cover plate in the sequence shown in Figure 9 31 Then tighten the screws to 2 N m 17 7 lbf in in the same sequence RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawe...

Page 123: ...er Figure 9 31 Closing the cover plate of an RRU cabling cavity Step 4 Take off the ESD gloves and pack up all the tools End RRU3260 Installation Guide 9 Installing RRU Cables Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 115 ...

Page 124: ... caps and the caps are tightened 5 There are no connectors or joints on each power cable or PGND cable 6 The terminals at two ends of each power cable or PGND cable are securely soldered or crimped 7 None of power cables and PGND cables can be short circuited or reversely connected In addition these cables are not damaged or broken 8 Power cables and PGND cables are separately bound from other cab...

Page 125: ... 12 All ground cables are properly grounded RRU3260 Installation Guide 10 Checking the RRU Hardware Installation Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 117 ...

Page 126: ...ust restore power to the RRU within 24 hours Figure 11 1 shows the RRU power on check process NOTE For details about how to power on an RRU see Powering On an RRU For details about how to power off an RRU see section Powering Off the RRU in RRU Maintenance Guide RRU3260 Installation Guide 11 Powering On an RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co...

Page 127: ...f the external power supply should range from 36 V DC to 57 V DC b The RUN indicator on the RRU is on for 1s and off for 1s The ALM indicator is steady off RRU3260 Installation Guide 11 Powering On an RRU Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 119 ...

Page 128: ...ool Less Female Connector Pressfit Type to the RRU Power Cable on the RRU Side This section describes the procedure for adding a tool less female connector pressfit type to the RRU power cable on the RRU side RRU3260 Installation Guide 12 Appendix Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 120 ...

Page 129: ...ram on labels 1 Cable diagram on labels NOTICE Prepare a Tool Less Female Connector Pressfit Type to the RRU Power Cable on the RRU Side by strictly following the following operations Otherwise damage to the RRU or personal injury may occur Procedure Step 1 Determine the length of the power cable for different operations based on the labels as shown in Figure 12 2 RRU3260 Installation Guide 12 App...

Page 130: ... be consistent with the length of the notch in the tool less female connector pressfit type as shown in Figure 12 4 Figure 12 4 Stripping the sheath off each core wire Figure 12 5 Matched length Step 4 Add a tool less female connector pressfit type to two core wires 1 Tighten the screws using a Phillips screwdriver as shown in Figure 12 6 RRU3260 Installation Guide 12 Appendix Issue 10 2015 12 30 ...

Page 131: ...may result in equipment malfunctions or personal injury Therefore check the power cable connection before powering on the RRU Figure 12 7 Adding a tool less female connector pressfit type to two core wires 3 After the core wires are installed ensure that each core wire is securely installed after being dragged with a torque of 30 N m and all copper wires are inserted in the connector terminal sock...

Page 132: ... less female connector pressfit type for 1 5 mm 0 059 in as shown in Figure 12 9 Figure 12 9 Inserting core wires into the tool less female connector pressfit type End RRU3260 Installation Guide 12 Appendix Issue 10 2015 12 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 124 ...

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