Huawei RRU3942 Installation Manual Download Page 19

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Figure 3-4

Diameter of a pole

CAUTION

The diameter of a pole for installing an RRU ranges from 60 mm (2.36 in.) to 114 mm (4.49
in.). The recommended diameter is 80 mm (3.15 in.).

If the diameter of a pole ranges from 60 mm (2.36 in.) to 76 mm (2.99 in.), a maximum of
two RRUs can be installed on the pole and the side-mounted installation is not recommended.

Figure 3-5

shows an RRU installed on a pole.

Figure 3-5

RRU installed on a pole

Installing an RRU on U-steel

Figure 3-6

shows U-steel specifications.

RRU3942
Installation Guide

3 Information About the Installation

Issue ()

Huawei Proprietary and Confidential

Summary of Contents for RRU3942

Page 1: ...RRU3942 Installation Guide Issue Date HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...ay not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document is subject to change without notice Every effort has been made in the preparation of this document ...

Page 3: ...ation 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 installing an RRU you must be familiar with its exterior ports installation options physical supports and instal...

Page 4: ...power receptacle pressfit type connector Conventions Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates a hazard with a high level of risk which if not avoided will result in death or serious injury Indicates a hazard with a medium or low level of risk which if not avoided could result in minor or moderate injury Indicates a potent...

Page 5: ...uped in brackets and separated by vertical bars One item is selected or no item is selected x y Optional items are grouped in braces and separated by vertical bars A minimum of one item or a maximum of all items can be selected x y Optional items are grouped in brackets and separated by vertical bars Several items or no item can be selected GUI Conventions The GUI conventions that may be found in ...

Page 6: ...ouse Operations The mouse operations that may be found in this document are defined as follows Action Description Click Select and release the primary mouse button without moving the pointer Double click Press the primary mouse button twice continuously and quickly without moving the pointer Drag Press and hold the primary mouse button and move the pointer to a certain position RRU3942 Installatio...

Page 7: ...arance for Multiple RRUs 17 3 5 3 Installation Spacing Between RRUs 20 4 Unpacking the Equipment 24 5 Installation Process 26 6 Installing the RRU 27 6 1 Mounting Kits for an RRU 29 6 2 Installing the RRU on a Pole 29 6 2 1 Installing a Single RRU 32 6 2 2 Installing Two RRUs 34 6 2 3 Installing Multiple RRUs 37 6 3 Installing the RRU on U steel 40 6 4 Installing the RRU on Angle Steel 44 6 5 Inst...

Page 8: ...y 75 7 10 Installing an RRU power cable 77 7 11 Installing a CPRI Fiber Optic Cable 79 7 12 Installing an RRU Alarm Cable 81 7 13 Closing the Cover Plate of an RRU Cabling Cavity 82 8 Checking the RRU Hardware Installation 84 9 Powering On an RRU 85 10 Appendix 86 10 1 Adding an Easy Power Receptacle Pressfit Type Connector to the RRU Power Cable on the RRU Side 87 RRU3942 Installation Guide Conte...

Page 9: ...er Cables onto a Tower Compared with issue 01 2011 09 30 this issue includes the following changes Topic Change Description 4 Unpacking the Equipment Added the requirements for powering on the cabinet and module 7 1 Cabling Requirements Optimized cabling requirements Compared with issue 01 2011 09 30 no information is deleted from this issue 01 2011 09 30 This is the first official release RRU3942...

Page 10: ...be familiar with reference documents 2 2 Tools and Instruments All tools and instruments required for RRU installation must be ready 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 RRU3942 Installation Guide ...

Page 11: ...ools and Instruments All tools and instruments required for RRU installation must be ready before the installation Hammer drill a φ 14 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 Utility knife Cable cutter Adjustable wrench capacity 32 mm 1 26 in RRU3942 Installation Guide 2 Installation Preparat...

Page 12: ...n onsite personnel must be familiar with correct operation methods and safety precautions Before the installation pay attention to 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 ...

Page 13: ...ndicator panel 3 3 RRU Indicators This section describes six indicators on an RRU They indicate the running status 3 4 Installation Options This section describes RRU installation options An RRU can be installed on a pole U steel angle steel or wall 3 5 Installation Clearance Requirements of an RRU This section describes the requirements for the installation clearance of a single RRU and multiple ...

Page 14: ...ns Figure 3 2 RRU dimensions 3 2 RRU Ports This section describes RRU ports positioned on the RRU panels An RRU has a bottom panel cabling cavity panel and indicator panel Figure 3 3 shows RRU ports on the panels RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 6 ...

Page 15: ...nd indicators on the panels Item Label Description 1 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 RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 7 ...

Page 16: ...Indicators ALM ACT VSWR CPRI0 IR0 CPRI1 IR1 NOTE The port for transmitting RET signals is determined by the software Table 3 2 describes how to use RF ports Table 3 2 Method of using RF ports Product Version TX RX Channel Number of Used RF Ports Method MBTS V100R004 2T2R 2 ANT_TX RXA is used with ANT_TX RXB Versions later than MBTS V100R004 One 1T2R 2 ANT_TX RXA is used with ANT_RXC 2 ANT_TX RXB i...

Page 17: ...king on for 1s and off for 1s The module is working 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 On Alarms are generated and the module must be replaced Blinking on for 1s and off for 1s Alarms are generated The alarms may be caused by the faults on the related boards or ports Therefore the necessity for module repla...

Page 18: ... module is not properly installed or the optical module is powered off CPRI1 IR1 Red and green Steady green The CPRI link is available 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 mutual lock of dual mode clock sources or mismatc...

Page 19: ...36 in to 76 mm 2 99 in a maximum of two RRUs can be installed on the pole and the side mounted installation is not recommended Figure 3 5 shows an RRU installed on a pole Figure 3 5 RRU installed on a pole Installing an RRU on U steel Figure 3 6 shows U steel specifications RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Te...

Page 20: ...ss than or equal to 10 degrees as shown in Figure 3 7 Figure 3 7 Requirements for the vertical deviation angle of U steel or angle steel 1 RRU 2 U steel or angle steel Figure 3 8 shows an RRU installed on U steel RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 12 ...

Page 21: ...is recommended that only one RRU be installed on angle steel l The vertical deviation angle of angle steel must be less than or equal to 10 degrees as shown in Figure 3 7 Figure 3 10 shows an RRU installed on angle steel RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 13 ...

Page 22: ...on bolts must be tightened to 30 N m 265 52 lbf in to ensure the bolts work properly and the wall remains intact without cracks in it CAUTION The brackets cannot be combined when RRUs are installed on a wall as shown in Figure 3 11 Figure 3 11 Correct placement of brackets Figure 3 12 shows an RRU installed on a wall RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Prop...

Page 23: ...m installation clearance ensures normal running and heat dissipation but OM activities such as checking indicator status and opening the maintenance cavity cannot be properly conducted If the installation space is restricted leave the minimum installation clearance 3 5 1 Installation Clearance for a Single RRU This section describes the recommended and minimum installation clearance for a single R...

Page 24: ...ngle RRU Figure 3 14 Minimum installation clearance for a single RRU Minimum Installation Clearance for a Single RRU Installed on a Tower Figure 3 15 shows the minimum installation clearance for a single RRU installed on a tower RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 16 ...

Page 25: ...um installation clearance for multiple RRUs Recommended Installation Clearance for Multiple RRUs Installed in Centralized Mode Figure 3 16 shows the recommended installation clearance for multiple RRUs installed in centralized mode RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 17 ...

Page 26: ...n Centralized Mode Figure 3 17 shows the minimum installation clearance for multiple RRUs installed in centralized mode Figure 3 17 Minimum installation clearance for multiple RRUs installed in centralized mode RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 18 ...

Page 27: ...Recommended clearance for multiple RRUs installed on a wall in standard mode Minimum Clearance for Multiple RRUs Installed on a Wall in Standard Mode Figure 3 19 shows the minimum clearance for multiple RRUs installed on a wall in standard mode RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 19 ...

Page 28: ...nce for multiple RRUs side mounted on a wall Figure 3 20 Recommended clearance for multiple RRUs side mounted on a wall 3 5 3 Installation Spacing Between RRUs This section describes the horizontal and vertical installation spacing between RRUs RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 20 ...

Page 29: ...Spacing Between RRUs Figure 3 22 shows the minimum horizontal spacing between RRUs Figure 3 22 Minimum horizontal spacing between RRUs Recommended Vertical Spacing Between RRUs Figure 3 23 shows the recommended vertical spacing between RRUs RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 21 ...

Page 30: ... RRUs Minimum Vertical Spacing Between RRUs Figure 3 24 shows the minimum vertical spacing between RRUs RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 22 ...

Page 31: ...Figure 3 24 Minimum vertical spacing between RRUs RRU3942 Installation Guide 3 Information About the Installation Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 23 ...

Page 32: ...ION 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 any miss...

Page 33: ...ign the Packing List with the customer There is any shipment shortage or wrong shipment Fill in and submit the Cargo Shortage and Mishandling Report Articles are damaged Fill in and submit the Article Replacement Report WARNING 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 enviro...

Page 34: ...es checking 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 RRU3942 Installation Guide 5 Installation Process Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 26 ...

Page 35: ...es the procedure for installing the RRU on U steel and the precautions that must be taken during the installation The RRU installed on U steel can be mounted to a tower or placed on the ground It is recommended that only one RRU be installed on U steel 6 4 Installing the RRU on Angle Steel This section describes the procedure for installing the RRU on angle steel and the precautions that must be t...

Page 36: ... can be installed on a pole U steel or angle steel This section describes the procedure for hoisting the RRU and mounting kits onto the tower and the precautions that must be taken RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 28 ...

Page 37: ...ent plate Figure 6 2 shows the bracket assembly for an RRU Figure 6 2 Bracket assembly for an RRU 1 Auxiliary mounting bracket 2 Dual nut bolt assembly 3 Main mounting bracket 4 Hoist clamp on the main mounting bracket 6 2 Installing the RRU on a Pole One or more RRUs can be installed on a pole RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huaw...

Page 38: ...Figure 6 4 shows two RRUs installed on a pole Figure 6 4 Two RRUs installed on a pole Figure 6 5 Figure 6 6 and Figure 6 7 show more than two RRUs installed on a pole RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 30 ...

Page 39: ...talled on a pole in centralized mode Figure 6 6 Four RRUs installed on a pole in centralized mode RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 31 ...

Page 40: ...ower For details see 6 6 Hoisting an RRU onto a Tower The hoist clamp on the main mounting bracket is secured properly Procedure Step 1 Determine a position for installing the main mounting bracket l If the RRU must be installed on a tower see 3 5 1 Installation Clearance for a Single RRU to determine a position l If the RRU must be installed on the ground see Figure 6 8 to determine a position RR...

Page 41: ... assembly NOTE Verify that the arrow on the main mounting bracket is pointing up Step 4 Using a torque wrench tighten the nuts to 40 N m 354 03 lbf in to secure the bracket assembly onto the pole as shown in Figure 6 10 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the brackets on both sides and...

Page 42: ...11 Figure 6 11 Installing the RRU on the main mounting bracket End 6 2 2 Installing Two RRUs This section describes the procedure for installing two RRUs on a pole and the precautions that must be taken during the installation RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 34 ...

Page 43: ...ng bracket to secure the second RRU as shown in Figure 6 13 Figure 6 13 Installing the second main mounting bracket Step 3 Interchange the cover plate and plastic screws in the front and the attachment plate and stainless steel screws at the rear of the second RRU as shown in Figure 6 14 RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Tech...

Page 44: ...d tighten the screws to 0 25 N m 2 21 lbf in using a torque screwdriver 4 Install the cover plate onto the RRU rear 5 Install the attachment plate onto the RRU front and tighten the stainless steel screws on the attachment plate to 5 N m 44 25 lbf in using a torque screwdriver Step 4 Install the second RRU on the main mounting bracket as shown in Figure 6 15 Figure 6 15 Installing the second RRU o...

Page 45: ...16 Interchanging the attachment plate at the RRU rear and the cover plate on the RRU side 1 Remove the attachment plate from the RRU rear using an inner hexagon screwdriver 2 Remove the cover plate from the RRU side and use a Phillips screwdriver to remove the plastic screws from the RRU 3 Install the plastic screws onto the RRU rear and tighten the screws to 0 25 N m 2 21 lbf in using a torque sc...

Page 46: ...the first main mounting bracket as shown in Figure 6 18 Figure 6 18 Installing the second main mounting bracket Step 5 Install the second RRU on the second main mounting bracket as shown in Figure 6 19 RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 38 ...

Page 47: ...the third RRU on the main mounting bracket as shown in Figure 6 20 Figure 6 20 Installing the third RRU on the third main mounting bracket Step 7 Install the fourth main mounting bracket as shown in Figure 6 21 RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 39 ...

Page 48: ...ling the RRU on U steel and the precautions that must be taken during the installation The RRU installed on U steel can be mounted to a tower or placed on the ground It is recommended that only one RRU be installed on U steel Prerequisite Before you install an RRU on a tower the RRU and mounting kits are hoisted onto the tower For details see 6 6 Hoisting an RRU onto a Tower RRU3942 Installation G...

Page 49: ...ng the main mounting bracket l If the RRU must be installed on a tower see 3 5 1 Installation Clearance for a Single RRU to determine a position l If the RRU must be installed on the ground see Figure 6 24 to determine a position Figure 6 24 Distance between the main mounting bracket and the ground RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright ...

Page 50: ...nstalling the bracket assembly NOTE Verify that the arrow on the main mounting bracket is pointing up Step 4 Using a torque wrench tighten the nuts to 40 N m 354 03 lbf in to secure the bracket assembly onto the U steel as shown in Figure 6 26 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the br...

Page 51: ...e RRU on the main mounting bracket until the RRU snaps shut as shown in Figure 6 27 Figure 6 27 Installing the RRU on the main mounting bracket RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 43 ...

Page 52: ...laced on the ground It is recommended that only one RRU be installed on angle steel Prerequisite Before you install an RRU on a tower the RRU and mounting kits are hoisted onto the tower For details see 6 6 Hoisting an RRU onto a Tower The hoist clamp on the main mounting bracket is secured properly Context Figure 6 29 shows the top view of the RRU installed on angle steel RRU3942 Installation Gui...

Page 53: ...ain mounting bracket and the ground NOTE It is recommended that the main mounting bracket be 1 200 mm 47 24 in to 1 600 mm 62 99 in above the ground Step 2 Fit one end of the auxiliary mounting bracket to one dual nut bolt assembly of the main mounting bracket Step 3 Install the bracket assembly on angle steel and then fit the other end of the auxiliary mounting bracket to the other dual nut bolt ...

Page 54: ...s shown in Figure 6 32 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the brackets on both sides and ensure that the spacing is the same on the two sides Figure 6 32 Securing the bracket assembly onto angle steel RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confide...

Page 55: ... must meet the following requirements l When a single RRU is installed the wall has a capacity of bearing at least four times the weight of the RRU l Expansion bolts must be tightened to 30 N m 265 52 lbf in to ensure the bolts work properly and the wall remains intact without cracks in it Procedure Step 1 Place the auxiliary mounting bracket against the installation position use a level to verify...

Page 56: ... above the ground Figure 6 35 Expansion bolt assembly 1 M10x65 bolt 2 Spring washer 10 3 Plastic tube 4 Flat washer 10 5 Expansion tube Step 2 Drill holes at the anchor points and then insert expansion bolt assemblies as shown in Figure 6 36 RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 48 ...

Page 57: ...cally into each hole 4 Remove the M10x65 bolt spring washer plastic tube and flat washer from each expansion bolt assembly in sequence NOTE After completely removing an expansion bolt store the plastic tube properly 5 Hammer the bolt into the wall CAUTION Do not hammer the expansion bolt entirely into the wall Instead leave 20 mm 0 79 in to 30 mm 1 18 in of the expansion bolt outside the wall Step...

Page 58: ...is pointing up Step 4 Loosen the screws on the main mounting bracket and store them properly Step 5 Install the main mounting bracket as shown in Figure 6 38 Figure 6 38 Installing the main mounting bracket RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 50 ...

Page 59: ...utions that must be taken Prerequisite Place a foam pad or cardboard on the ground to protect the housing of the RRU from damage before the binding Do not stand the RRU upright because the load bearing capacity of the RF ports at the RRU bottom is low CAUTION When installed on a tower only one RRU can be installed in standard mode or reverse mode and two RRUs can be installed on a pole in back to ...

Page 60: ...ifting eye and RRU handle and use the sling as a lifting sling and lead the other sling through the RRU handle and use the sling as a traction sling as shown in Figure 6 41 Figure 6 41 Binding the RRU 1 Lifting sling 2 Lifting eye 3 Traction sling 4 Handle RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 52 ...

Page 61: ...g kits onto the tower protect them from colliding with the ground and tower l Hoist the RRU onto the tower before it is installed on a pole angle steel or U steel l Do not hoist the RRU by the handle or lifting eye only as shown in Figure 6 42 and Figure 6 43 Figure 6 42 Incorrect binding method Figure 6 43 Incorrect binding method RRU3942 Installation Guide 6 Installing the RRU Issue Huawei Propr...

Page 62: ...ds the lifting sling through the fixed pulley 2 Installation engineer C binds the RRU using the lifting sling and secures the traction sling to the RRU handle 3 Installation engineer B pulls the lifting sling downwards and installation engineer C pulls the traction sling outwards to protect the RRU and mounting kits from colliding with the tower 4 Installation engineer A catches the RRU install th...

Page 63: ... Installing an Inter RRU RF Cable This section describes the procedure for installing the inter RRU RF cable 7 8 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 7 9 Opening the Cover Plate of an RRU Cabling Cavity This section describes the procedure for opening the cover pla...

Page 64: ...U Cabling Cavity This section describes the procedure for closing the cover plate of an RRU cabling cavity RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 56 ...

Page 65: ...nding l The same types of cable must be bound together l Different types of cable must be separately routed with the minimum spacing of 30 mm 1 18 in and cannot be entangled l The cables must be bound tightly and neatly The sheaths of the cables must not be damaged l Cable ties are installed in the same direction and those at the same horizontal line must be in a straight line l The excess of indo...

Page 66: ...ot lead the pipe into the cabinet base The cable trough must be sealed and routed through the cable hole at the cabinet bottom l Cables are secured with cable clips l Cables are routed neatly along the specified cabling direction and secured with cable clips l The positions for cable clips are determined onsite For example the cable clips for the 7 8 feeder are installed at the spacing of 1 5 m 4 ...

Page 67: ...curing cables on the cable tray Secure cables on the tower as shown in Figure 7 2 RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 59 ...

Page 68: ...sign documents l If the length of power cables is insufficient replace the cables rather than adding connectors or soldering joints to lengthen the cables l Cables must be routed by only qualified and trained personnel before all preparations are made RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 60 ...

Page 69: ...bles PGND cables or RF cables in parallel the spacing between them must be greater than 30 mm 1 18 in l E1 cables are routed straightly and bound neatly with cable ties l Sufficient slack is provided in E1 cables at turns Cabling Requirements for Fiber Optic Cables l Fiber optic cables must be routed by at least three qualified and trained personnel before all preparations are made l Fiber optic c...

Page 70: ...g a power cable Figure 7 3 shows the cable connections for a single RRU in the single mode scenario Figure 7 3 Cable connections for a single RRU in the single mode scenario 1 PGND cable 2 RRU RF jumper 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 7 4 shows the cable connections for a single RRU in the multi mode scenari...

Page 71: ...i wire cable 4 RRU AISG extension cable 5 RRU power cable 6 CPRI fiber optic cable 7 RRU alarm cable Figure 7 5 shows the cable connections for multiple RRUs in the single mode scenario RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 63 ...

Page 72: ... RRU RF jumper 3 RRU power cable 4 CPRI fiber optic cable Figure 7 6 shows the CPRI fiber optic cable connections for multiple RRUs in the multi mode scenario RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 64 ...

Page 73: ...e scenario 7 3 Installation Process This section describes the process of installing RRU cables Figure 7 7 shows the process of installing RRU cables RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 65 ...

Page 74: ...e One End The Other End Connector Installation Position Connector Installation Position RRU PGND Cable OT terminal M6 16 mm2 0 025 in 2 Ground terminal on the RRU OT terminal M8 16 mm2 0 025 in 2 Ground terminal on the ground bar RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 66 ...

Page 75: ...rt on the RRU Cord end terminal External alarm device CPRI Fiber Optic Cable in multi mode scenarios DLC connector CPRI0 port on the RRU CPRI1 port on the RRU DLC connector GSM UMTS GU mode CPRI port on the GTMU in the BBU CPRI port on the WBBP in the BBU GSM LTE GL mode CPRI port on the GTMU in the BBU CPRI port on the LBBP in the BBU UMTS LTE UL mode CPRI port on the WBBP in the BBU CPRI port on...

Page 76: ...RRU AISG Multi Wire Cable Waterproofed DB9 male connector RET port on the RRU Standard AISG female connector Standard AISG male connector 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 7 5 Installing an RRU PGND Cable Th...

Page 77: ... the M6 OT terminal at one end of the PGND cable 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 7 8 Figure 7 8 Installing an RRU PGND cable NOTE Crimp OT terminals in correct positions as shown in Figure 7 9 Figure 7 9 Correct position of an OT terminal RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Pr...

Page 78: ...10 Installing an RRU RF jumper CAUTION 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...

Page 79: ...until all the three layers of the tape are already wrapped Wrap each layer of tape around the connector tightly 2 Wrap each connector with three layers of PVC insulation tape from bottom up then from top down and finally from bottom up Start the wrapping at the position 30 mm 1 18 in away from the bottom of the connector Do not cut the tape until all the three layers of the tape are already wrappe...

Page 80: ...ion 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 Wrap each layer of tape around the connector tightly Step 5 Lay out the jumper by referring to 7 1 Cabling Requirements and then bind the jumper using cable ties Step 6 Label the installed jumper by referring to Attaching a Sign Plate Label Step 7 Att...

Page 81: ...text When the distance between an RRU and a Remote Control Unit RCU is longer than 5 m 16 4 ft an AISG multi wire cable is not long enough to connect the RRU and the RCU In this case an AISG extension cable is used to extend the AISG multi wire cable Procedure l Install an AISG multi wire cable that is not configured with an AISG extension cable 1 Link the waterproofed DB9 connector at one end the...

Page 82: ...aped Label l Install an AISG multi wire cable that is configured with an AISG extension cable 1 Link the waterproofed DB9 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 7 15 Figure 7 15 Installing an RRU AISG multi wire cable RRU3942 Installation Guide 7 In...

Page 83: ...Cavity This section describes the procedure for opening the cover plate of an RRU cabling cavity Procedure Step 1 Wear ESD gloves CAUTION Take proper ESD protection measures for example wear ESD gloves to prevent electrostatic damage to the boards modules or electronic components Step 2 Loosen the protection screw on the cover plate of the RRU cabling cavity using an M4 Phillips screwdriver and th...

Page 84: ...trough for the fiber optic cable 4 Cable trough for the power cable 5 Cable trough for the alarm cable 6 Waterproof block 7 Clip 8 Cabling cavity Step 3 Loosen the screws on the clip and open the clip as shown Figure 7 19 NOTE Open the clip only for the associated cable RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd...

Page 85: ...rminals are added to the RRU power cable on the power device side For details see the DBS3900 Installation Guide Context The cross sectional area of the RRU power cable is 6 mm2 0 009 in 2 Procedure l Install an RRU power cable that feeds power to an RRU from a DCDU 11B when the DCDU 11B is configured 1 Link the easy power receptacle pressfit type connector at one end of the RRU power cable to the...

Page 86: ...erring to 7 1 Cabling Requirements and then bind the cable using cable ties 4 Label the installed cable by referring to Attaching a Cable Tying Label l Install an RRU power cable that feeds power to an RRU from an EPU when the EPU is configured 1 Link the easy power receptacle pressfit type connector at one end of the RRU power cable to the power supply socket on the RRU as shown in Figure 7 20 2 ...

Page 87: ...er 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 indicates a single mode optical module and black or gray indicates a multi mode optical module CAUTION The optical modules to be installed must match CPRI rates Context A CPRI fiber optic cable transm...

Page 88: ... an fiber optic cable into an unpacked optical module within 20 minutes Step 2 Connect the end labeled 1A and 1B of the fiber optic cable to the optical module on the RRU side as shown in Figure 7 22 Figure 7 22 Installing a CPRI fiber optic cable RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 80 ...

Page 89: ...ble ties Step 5 Label the fiber optic cable by referring to Attaching an L Shaped Label End 7 12 Installing an RRU Alarm Cable This section describes the procedure for installing an RRU alarm cable Procedure Step 1 Link the DB15 connector at one end of the RRU alarm cable to the EXT_ALM port on the RRU and link the eight cord end terminals at the other end to the external alarm device as shown in ...

Page 90: ...cabling cavity Procedure Step 1 Close clips and tighten the screws on each clip to 1 4 N m 12 39 lbf in using a torque screwdriver as shown in Figure 7 24 Figure 7 24 Closing clips CAUTION Ensure that the exposed shield layer of the power cable is properly tightened using the clip Step 2 Insert waterproof blocks into vacant cable troughs in the cabling cavity as shown in Figure 7 25 RRU3942 Instal...

Page 91: ...plate of the RRU cabling cavity 1 Protection screw CAUTION l Before tightening the screws on the cover plate ensure that cables and waterproof blocks are properly inserted into troughs l Tighten the screws on the cover plate in the sequence shown in the figure Step 4 Take off the ESD gloves and pack up all the tools End RRU3942 Installation Guide 7 Installing RRU Cables Issue Huawei Proprietary an...

Page 92: ...tproof 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 oth...

Page 93: ...power on it within 24 hours If you power off the RRU for maintenance you must restore power to the RRU within 24 hours Figure 9 1 shows the RRU power on check process Figure 9 1 RRU power on check process RRU3942 Installation Guide 9 Powering On an RRU Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 85 ...

Page 94: ... Easy Power Receptacle Pressfit Type Connector to the RRU Power Cable on the RRU Side This section describes the procedure for adding an easy power receptacle pressfit type connector to the RRU power cable on the RRU side RRU3942 Installation Guide 10 Appendix Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 86 ...

Page 95: ...the cable diagram on labels Figure 10 1 Cable diagram on labels 1 Cable diagram on labels Step 2 Determine the length of the power cable for different operations based on the labels as shown in Figure 10 2 Figure 10 2 Determining the length of the power cable Step 3 Strip the specified length of the sheath off the power cable as shown in Figure 10 3 RRU3942 Installation Guide 10 Appendix Issue Hua...

Page 96: ...e pressfit type connector as shown in Figure 10 4 Figure 10 4 Stripping the sheath off each core wire Figure 10 5 Matched length Step 5 Add an easy power receptacle pressfit type connector to two core wires 1 Tighten the screws using a Phillips screwdriver as shown in Figure 10 6 RRU3942 Installation Guide 10 Appendix Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 8...

Page 97: ...hillips screwdriver as shown in Figure 10 7 Figure 10 7 Adding an easy power receptacle pressfit type connector to two core wires Step 6 Strip the specified length of the sheath off the power cable to expose the intact shield layer as shown in Figure 10 8 Figure 10 8 Stripping the sheath off the power cable RRU3942 Installation Guide 10 Appendix Issue Huawei Proprietary and Confidential Copyright ...

Page 98: ...fit type connector for 1 5 mm 0 059 in as shown in Figure 10 9 Figure 10 9 Inserting core wires into the easy power receptacle pressfit type connector End RRU3942 Installation Guide 10 Appendix Issue Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 90 ...

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