bts zxsdrnodeb

7/30/2019 Bts ZxsdrnodeB

1/27

ZXSDR BS8900 (V4.0) Hardware Installation Inspection Criteria For Internal Use Only

Confidential and Proprietary Information of ZTE CORPORATION.

ZXSDR Outdoor MacroNode B

Hardware Installation InspectionCriteria

For ENTEL 3G Project


2/27

ZXSDR Outdoor NodeB Hardware Installation Inspection Criteria For Internal Use Only

Confidential and Proprietary Information of ZTE CORPORATION. i

Contents

Chapter 1 Installation Location and Equipment Layout .......................................................................1-1

1.1 Installation Location ......................................................................................................................... 1-1

1.2 Equipment Layout ............................................................................................................................1-1

Chapter 2 Equipment Installation Techniques........................................................................................1-5

Chapter 3 Installation of Antenna Mount and RRU Pole ......................................................................1-8

Chapter 4 Installation of Outdoor Cable Trays.......................................................................................1-9

Chapter 5 Cable Distribution and Connection........................................................................................1-1

5.1 Cabling Requirements ......................................................................................................................1-1

5.2 Bundling Requirements .................................................................................................................... 1-1

5.3 Cable Connection..............................................................................................................................1-2

5.4 Grounding and Waterproofing Measures..........................................................................................1-2

5.5 Power Cables & Ground Cables ....................................................................................................... 1-5

5.6 Optical Fibers and Trunk Cables ......................................................................................................1-6

Chapter 6 Installation of Antennas and Feeder System..........................................................................1-1

6.1 Installation of Antenna Mount .......................................................................................................... 1-1

6.2 Antenna System ................................................................................................................................ 1-1

6.3 Feeder Installation ............................................................................................................................1-2

6.4 Grounding Cables ............................................................................................................................. 1-4

Chapter 7 Installation of GPS Antenna and Feeders.............................................................................. 1-1

Chapter 8 Assembly, Labels and Others .................................................................................................. 1-3

8.1 Equipment and Assembly ................................................................................................................. 1-3

8.2 Labels................................................................................................................................................1-3

8.3 Others................................................................................................................................................1-4


3/27


Confidential and Proprietary Information of ZTE CORPORATION. 1-1

Chapter 1 Installation Location andEquipment Layout1.1 Installation Location

1. If the equipment is to be installed in the mountain slope or on the flat groundunder the iron tower, then the simple fencing or shelter shall be built for the basestation.

2. A cement platform is required for the equipment installation to ensure that theequipment is more secure.

3. If the soil resistivity of the site is lower than 700m, the ground resistance forthe site should be less than 10. Otherwise, the equivalent radius of the groundgrid should be at least 20m, and horizontal radiating ground conductors that are20~30m long should be laid at the four corners of the ground grid.

1.2 Equipment Layout

1. The installation location of the equipment (such as the BBU, its installation rack,the RRU, and the lightning proof box) should meet the requirements of theengineering design documents. And if there is any deviation, it should be withinthe allowed range (if there is no engineering design document, the installationlocation should meet the users requirements and it should be approved by theuser with the users signature.)

1. The front side of the racks or cabinets in the same row should be on the sameline.

2. The RRU should be installed at a place with good ventilation. If condition allows,

it should be installed at a place with little sunshine, for example, under a shade.Besides, it is prohibited to install the RRU at the exit of the smoke pipe or at theplace where water may run by.

3. The requirements of equipment layout when using BC8910cabinet are:

a) At least 300 mm of spare room should be kept at both flanks of theBC8910 cabinet. At lest 300 mm of spare room should be kept behindthe cabinet and at least 800 mm of spare room should be kept in frontof the cabinet for maintenance.

b) The BBU, cable troughs and LPU should all be installed in the correctpositions.

c) Before the BBU is installed, the windshield plates must bedismounted.

4. An outdoor lightning proof box (OLP) should be equipped for each RRU, andthe distance between RRU and OLP should be shorter than 1 m.

7. RRU should not be installed back to back with the antenna to avoid rear lobeinterference. If there is no available space to prevent this from happening, RRUshould be installed lower than the mid length of the antenna, and at a distance>= 50cm from the back of the antenna. An additional support for RRU and OLPmay be needed.


4/27



8. When OLP and RRU are installed to the same support pole, they should beinstalled in a back-to-back mode. OLP and RRU must not be installed above

the antenna, exposing the jumper to the rear lobe.


5/27



9. When OLP and RRU are installed at the same height against the wall, thedistance between them should be at least 100 mm. If they are installed in anup-and-down mode, the OLP should be above the RRU and the distancebetween them should be at least 300 mm.

10. When OLP and RRU are installed on the platform of an iron tower, the RRUequipment should be installed on the inside of the platform to allow easy accessfor replacement. An additional bolt may be needed to fix the bracket to thehorizontal beam and prevent the equipment to move sideways.


6/27



11. If the OLP and RRU are installed against the wall, the equipment should be atleast 1 m from the lightning protective strip and the ground cable of the lightningrod.


7/27



Chapter 2 Equipment InstallationTechniques

1. The equipment location shall meet the engineering design documents.And certain room has been reserved for subsequent maintenance andexpansion.

2. The vertical deviation of the cabinets shall not exceed 1 of the cabinetheight.

3. After the cabinets are installed, they shall look neat. The same row andline of cabinets shall be on the same surface, with a deviation not morethan 5mm allowed.

4. Before the cabinet is installed, a cement platform should be built at first.Then the cabinet is installed, with a certain maintenance space reserved.

Unless the roof supports the weight of an additional cement platform, It isprohibited to install the expansion bolts directly on the building roof. If anexisting non-cement platform must be used, cabinet must be securelyanchored to it ensuring it doesnt shakes.(1) If two cabinets are piled, then the maintenance space should meet thefollowing requirements: the left side, the right side and the rear side of thecabinets shall all have at least 300mm of space reserved, and the frontside shall have at least 800mm of space reserved

If the area reserved to install the equipment have surrounding walls thatvoids the installation reserving the required 30cm in the back, it is allowedto install the cabinet facing the rear wall with one side, reserving 5cmfrom the wall to the side of the cabinet


8/27



(2) If two cabinets are in parallel, then the distance between them shall beat least 50mm and the cement platform shall meet the followingrequirements: the left side of the left cabinet, the right side of the rightcabinet and the rear side of the two cabinets shall have at least 300mm ofspace reserved, and the front side shall have at least 800mm of spacereserved to allow to open the door.

5. If the above rules are not applicable due to the lack of space, equipmentback and one of the sides can be put against the wall, considering a safedistance of at least 5cm from the wall to the rear or side of the cabinet,and reserving enough cable lengths at the bottom of the cabinet to allowBC8910 cabinet to be lifted and displaced to the front in order to allowmaintenance of power connections or site expansion. While BC8910cabinet is displaced, measures to guaranty its stability and safeguard

must be taken.6. The shake-proof measures shall meet the engineering design

requirements. And the accessories of shake-proof anchors shall be incomplete set and be fixed correctly.

7. The cabinet and the base are connected reliably. The cabinet shall notshake.

8. Expansion bolts for the cabinet or base (support) shall be installedcorrectly and securely, and all the insulating washers, flat washers, springwashers, bolts and nuts shall be installed in the correct sequence, withoutreverse installation.

9. If the insulating anchor is fixed, make sure the expansion bolts are

insulated from the cabinet.


9/27



10. All the fasteners shall be screwed down.

11. All the parts of the cabinet shall not fall off or have damages. Theconnection shall not fall off or break.

12. All the logos and labels shall be correct, complete and clear.13. After the cabinet is installed, it is required to clean its internal and external

surfaces.

14. Push the cover plates at the top and bottom cable holes to prevent smallanimals from entering.

15. Any engineering waste materials like unused electric cables, cutoff cablepieces, etc are disposed off. There should be no cable clips or sundriesleft at the installation site. Any waste materials should be put in a dustcover, closed tightly and disposed off.

16. After installation is concluded, no surplus materials or tools should bekept stored inside the cabinets\

17. If the BBU is installed in an outdoor BC8910 cabinet, the top cover of theBC8910 cabinet should be correctly mounted, and the base and batteriesshould also be securely fixed. After the installation, the cable holes at thebottom of the cabinet must be sealed, and the mouth of the ratproof bagat the top of the battery cabinet must be securely closed.

18. The same type of bolts should be installed in the same mode and in aconsistent direction.

19. No matter which installation mode is adopted for the RRU, the RRU cableconnectors must face downward. It is prohibited to keep them facingupward or toward either of the flank sides.

20. If the RRU is installed outdoors, a sun shield may be required, and fixedaccording to the climate. All the components of the sun shield should bein complete set, and the sun shield should be fixed securely.

21. If the RRU and OLP are installed to the pole or iron tower, special hoopsmust be used to fix them. It is prohibited to use other fixing parts.


10/27



Chapter 3 Installation of Antenna Mountand RRU Pole

1. The locations of the antenna mount and RRU pole should comply with theengineering design documents.

2. The antenna mount should be fixed firmly. It is recommended to select poleswhose wall thickness is at least 2 mm and diameter is longer than 60 mm orpoles that meet the design requirements.

3. The RRU pole should be fixed firmly. It is recommended to select the polewhose wall thickness is at least 2 mm and diameter ranges from 60 mm to 114mm or the pole that meets the design requirements.

4. The antenna poles should be erect, with a vertical deviation less than 2allowed.

5. When the engineering workers fix the antenna mount or RRU pole, the originalwaterproof layer of the rooftop or the wall shall not be destroyed. Concrete piersare recommended to fix them. Perforation should be avoided. If perforation isrequired, waterproof measures must be taken.

6. All the antenna mount poles in the iron tower should be fixed to the iron towerfirmly and securely.

7. All the antenna mount poles must be fixed firmly and unmovable. And they mustmeet the windproof requirements (against the strong wind of scale 12 at least oras per the engineering requirements).

8. If the RRU is installed to a pole, the lightning rod should not be mounted to thesame pole. If it is mounted to the same pole, it is recommended to lead the

lightning rod separately down to the ground or mount a separate lightning rodnear this pole for lightning protection.

9. The antenna mount must be grounded and within the 45 protection range ofthe lightning rod.

10. The naked supports, bolt joints and welds should have antirust andanti-corrosion treatment.


11/27



Chapter 4 Installation of Outdoor CableTrays

1. The installation positions and heights shall comply with the engineeringdesign requirements.

2. The cable tray and the wall or the cabinet row shall keep parallel, with2mm of horizontal deviation per meter allowed.

3. The cable tray shall be level or plumb, and the specifications of the levelirons shall be consistent. Both ends of the level iron shall be close to theflat steels of the tray and the level iron clips. The level irons and flat steelsof the cable tray shall be perpendicular to each other.

4. Components such as level iron clips and fastening bolts shall be incomplete set and firmly fixed.

5. The level irons of the cable tray shall be evenly spaced. If they obstructcabling, the spaces can be adjusted appropriately.

6. The troughs shall be installed in a straight, flat and secure way. Thetroughs in the same line shall be aligned, with 2mm of deviation allowedat the joints of two troughs.

7. The protection ground of the cable tray shall comply with the engineeringdesign requirements.

8. Reliable electric connection shall be ensured between the connectedtrays.

9. The ground support poles of the cable trays shall be installed in a vertical

and reliable way. The reinforcement support shall be installed stably andsecurely, with the hangers fixed neatly and vertically.

10. The indoor cable trays shall be grounded reliably. For the long cable trays,it is recommended to ground them once every 5 meters with multi-strandcopper wire, whose cross sectional area is at least 16mm

2.


12/27



Chapter 5 Cable Distribution andConnection5.1 Cabling Requirements

1. Routes of the power cables, ground cables and signal cables shall satisfythe engineering design requirements and product installationrequirements.

2. Different kinds of cables shall be laid separately, with their routes clear,smooth, straight and without cross. Finally, the cables shall be bundledwith proper tightness.

3. The cables outside the cabinet shall not intertwist. And cables shall notbend in 360 in the cable tray.

4. It is prohibited to suspend the cables in the air inside the cabinet.

5. .Cables and connectors in the cabinet that are redundant or forsubsequent expansion must be placed in the base.

6. The cable bending radius shall meet the related requirements.

5.2 Bundling Requirements

1. Cables must be bundled neatly and close to each other. The cablesurface shall be the same level, either horizontally or vertically, with adeviation not more than 5mm allowed.

2. To avoid core breaking, the ties shall be bond at the two sides near thebundle bend rather than at the bend.

3. The tie specification is right. The larger the sectional area is, the longerand wider ties should be used (to sustain large pull forces). Avoid usingthe ties in serial connection. If the ties have to be used in serialconnection, at most two ties can be connected.

4. The cables shall not loosen in the ties. The cable ties shall face a

consistent direction. The intervals between the ties shall be even and tidy


13/27



(usually 300mm~1000mm). For the horizontal cable tray, the intervalbetween two neighboring ties shall not exceed twice that between twoneighboring crosspieces. For the vertical cable tray, the cables must bebundled to every crosspiece.

5. The surplus part of the tie shall be cut off. For the tie inside the cabinet,the surplus part shall be completely cut off from the buckle. For the tieoutside the cabinet, the surplus part shall be neatly cut, with 2mm leftfrom the buckle.

6. It is prohibited to mix the black ties with the white ones. White ties shallbe used inside the cabinet while black ties used outside the cabinet.

7. Power cables, ground cables and signal cables shall be laid separatelyalong the two sides of the cable tray.

8. The cable surface shall be clean, without engineer marks. The insulatinglayers of protective tubes shall have no scratches or signs of damage.

5.3 Cable Connection

1. The cut ends shall be covered with proper tubes or wrapped withinsulating tapes. The color of the tubes and tapes should be consistentwith the cables (except the yellow-green PGN cables).

2. For the same kinds of cables, the length of the cable cut ends shall be thesame and so as the tubes and insulating tapes. The deviation shall notexceed 5mm.

3. The welded cable shall not have open joints, false welding, missedwelding, wrong welding or mixed welding. The core wires shall be closeto the terminal. The joints shall have no sharp tips or lumps. Theinsulating layers of the core wires shall not be burnt. And the length ofcopper wires exposed in the air shall not exceed 2mm.

4. All cables are connected properly, securely and neatly. It is prohibited tohave wrong cable connections.

5. When the cables are connected to the copper bar, the oxide layer of thecopper bar at the grounding point shall be removed.

6. If the cables are connected by screws, the screws shall be tightened.

5.4 Grounding and Waterproofing Measures

1. Before the outdoor cables are grounded, the oxide layer of the grounding pointshould be removed first. And the grounding terminals should be separately crimpedfast.

2. When the RRU is installed to the pole, the lightning rod should not be installed on

the pole. If a lightning rod has been installed on the pole, it should be led down to


14/27



the ground separately or another lightning rod should be set up near the pole toprotect that on the pole. When the RRU and the pole are electrically connected, theground cable of the RRU chassis shall not be connected to the pole directly. Instead,the RRU installation kit and the pole should be securely insulated, and the groundcable of RRU and that of the pole should be led to the ground grid separately.

3. When the galvanized flat steel is grounded, the welding length shall not be less than100 mm (twice of the flat steel width) to ensure the grounding resistance is smallerthan 0.1 .

4. If the building is equipped with lightning protective strip, the down lead of thelightning rod should be welded onto the strip otherwise, the down lead should beconnected to the new ground grid. The tower should be grounded reliably when it isfixed.

5. If there is an outdoor cable tray, it should be grounded about every 20 m by amulti-strand copper cable whose cross sectional area is not less than 16 mm

2or a

piece of 40 mm 4 mm galvanized flat steel.

6. All of the outdoor metal connecting joints and the grounding points must haveantirust paint and anti-corrosion treatment such as antirust paint and butter coating.

7. The copper ground terminals on the ground bar should use a copper lug and befastened by a nut.

8. While the basic requirements for cable layout are met, all the cables connecting tothe ground bar should be laid in the shortest routes.

9. When the RRU is installed outdoors, the lightning protection and groundingmeasures should meet relevant requirements. The RRU and OLP should beconnected by a copper cable whose cross sectional area is not less than 16 mm

2to

the nearby tower, the lightning protective strip on the roof of the building or to thecable tray. The wiring route should not be longer than 2 m and the grounding pointsshould be firmly crimped. And a copper ground bar can be installed when

necessary. The ground cables should be connected to the ground copper bar first,and then connected to the ground grid by multi-strand copper cables or flat steel.

10. The protective ground cables of the ILP should be connected according to thefollowing principles:

i. When the equipment is installed in a relatively lower-floor room (for example,on the second floor of a ten-floor building), and the ground bar out of thefeeder outlet is directly connected to the ground grid by a piece of wellconnected flat steel or a conductor, the ILP should be connected to theoutdoor ground bar by a yellow-green protective ground (PGND) cable with asectional area not less than 16 mm

2. The length of the PGND cables should be

within 3 m or be 5 m at most.

ii. When the equipment is installed in a higher-floor room (for example, on the topof the building), the outdoor ground bar out of the feeder outlet should beconnected to the ground grid by the lightning protective strip on the building,and the indoor ground bar should be directly connected to the ground grid frominside of the building. When the distance between the ILP and the outdoorground bar is longer than 5 m, the ILP should be connected to the indoor METby a yellow-green ground cable with a cross sectional area not less than 16mm

2. If the indoor MET is covered in the previous project, making it hard to

connect with the grounding point, the ILP should be installed near the indoorground bar, and be connected to it by a yellow-green PGND cable whosecross sectional area is not less than 16 mm

2. Usually, the route of this PGND

cable should not be longer than 2 m. If the PGND cable is longer than 2 m, it isrequired to connect the ground bar inside the ILP and that inside the DC power

cabinet with a ground cable whose cross sectional area is not less than 6 mm2

.


15/27



11. Outdoor DC power cables should be grounded on both ends in the lightningproofbox by the metal fasteners clamping the shielding layers. And a grounding clipshould be used to clamp the shielding layer out of the lightningproof box. OutdoorDC power cables should be grounded outside the lightningproof box as follows:

i. If L


16/27



5.5 Power Cables & Ground Cables

1. The routes of the cabinet input power cable and its protective groundcable shall comply with the requirements of the design documents. The

routes of the power cable inside the cabinet shall meet the productioninstallation requirements.

2. The cross sectional areas of the power cables and the ground cablesshall comply with the product installation requirements. The crosssectional area of the ground cables shall be at least 35 mm

2and they

shall be connected reliably to the indoor ground copper bar. And that ofthe DC power cable shall be at least 25mm

2and they shall be connected

reliably.

3. The cabinet input power cable shall be the 220V 3-cored single-phasecable or the 380V 4-cored 3-phase cable. The DC power cable inside thecabinet or between cabinets shall be the 2-cored outdoor interwovenshielding cable (16mm

2) or the blue cable (16mm

2). The -48V GND

power cable shall be black, and the ground cable shall be yellow-green.

4. Power cables and ground cables shall be made of whole-piecemulti-strand copper wires. There shall be no joint in the middle of a cableand its insulating layer shall be intact. The surplus parts shall be cut offrather than being coiled or bent repeatedly.

5. The wiring terminals shall match the diameter of the power cables andthe ground cables. The core wires shall be tidily trimmed. It is prohibitedto cut off part of the core wires and connect the rest to small wiringterminals. Power cables and ground cables shall be clamped reliably, andthe core in the terminal shall not be moveable.

6. When the power cables are crimped and connected, each bolt cansupport at most two wire terminals, and these two terminals shall crossover rather than overlap.

7. The clamping part of the wiring terminal shall be covered with ahot-shrinkable tube or at least two layers of insulating tapes, withoutexposing the naked core or copper lug.

8. The colors of the insulating tapes or the hot-shrinkable tubes shall beconsistent with the cables. The 48V power cable shall be wrapped withblue tapes, the -48V GND power cable shall be wrapped with black tapesand the ground cables shall be wrapped with yellow tapes.

9. The ground cable of the cabinet door shall be connected securely. It shall

be complete and shall not fall off.10. .The outdoor copper ground bar shall have a special reliable path to the

underground ground grid, and the path shall be as short as possible.

11. For the outdoor DC power cables inside the ILP and OLP, some part oftheir insulating sheaths must be removed so that corresponding metal areexposed for connection by cable clips.

12. When the outdoor cable is grounded with grounding clips, the groundcable should be led down in the downward direction of the outdoor cable,and should keep a degree not more than 15 with the outdoor cable.


17/27



5.6 Optical Fibers and Trunk Cables

1. When the optical fibers are distributed via the fiber distribution box, theend of the tail fiber protection tube shall not be more than 0.5m away from

the fiber distribution box.2. The cable ties to fasten the tail fibers inside the cabinet shall be nylon

velcro ties. And the tail fibers shall be able to be drawn freely in the cableties.

3. The optical fibers shall be laid straightly. There shall be no other cableson their top. And they shall be kept from the sharp edges of other objects.

4. The optical fibers shall enter the cabinet from the left side at the bottom ofthe cabinet.

5. The cut end of the protection tube shall be neat without burrs. The jointbetween two tubes shall be wrapped with electrical insulating tapes toavoid damages to the tail fibers.

6. The excessive optical fibers shall be coiled inside the tail fiber box, orcoiled with a diameter over 80mm and then fixed.

7. The idle optical connectors shall be covered by protective tubes.

8. The cut end of the trunk cable shall not hurt the core wires.

9. The welding joints of the trunk cables shall not have open joints, falsewelding, missing welding, wrong welding, or mixed welding. The coresshall closely fit with the terminals. The welding point shall not have sharpedge or lump, and the insulation layer of the cable shall not be burnedduring welding. The exposed copper wires shall not be longer than 2mm.

10. The reserved cables on the back of the DDF and ODF terminal platesshall be neat with consistent radian and length. The length of thereserved cables shall ensure that the terminal plates can be freely turnedin debugging.

11. The bends of the outdoor optical fibers should be even, smooth andconsistent, with the bending radius at least 20 times of the outdoor fiberexternal diameter.\

12. It is prohibited to take the outdoor optical fiber out of the packing box andcarry the bare fiber. The packing box of outdoor optical fiber shall not bepressed by the packing boxes of other engineering material. It isprohibited to put any heavy things or cables on the outdoor optical fiberbox.

13. When the outdoor optical fiber is distributed, it should be laid carefully.The fiber shall not be stretched directly and distributed like the powercable, and it should be laid coil by coil.

14. The tightly sealed cap, protective cap and undulated pipe should not beremoved too early, to prevent the end face of the fibers connector frombeing polluted by dust. They should be removed just before theequipment ports are connected.

15. If the outdoor optical fiber is distributed at the place easy to be treaded(including the area from outdoor cabinet to the bottom of tower, and thearea from equipment feeder outlet to the bottom of tower), the outdooroptical fiber should be protected. The engineer can make the fiber go

through the protective tube, or install hard PVC slot or aluminum cap.


18/27



16. If the outdoor optical fiber is subject to damage from outside when it goesin and out of the feeder hole, the corrugated pipe should be used toprotect it. The feeder hole of optical fiber is required to be sealed with thecement to make it waterproof.

17. Before outdoor optical fiber enters the equipment room, a water-drip bendshould be made at the outdoor feeder outlet, if the fiber is higher than thebottom of the feeder outlet. And the lowest point of the fiber after thewater-drip bend is made should be 10 cm to 15 cm lower than the bottomof the feeder outlet. If the fiber is lower than the bottom of the feederoutlet, it is unnecessary to make the water-drip bend before the outdooroptical fiber enters the equipment room.

18. The optical fibers are connected to the correct sectors.

19. The tail fiber of the outdoor fiber at the BBU side should be wrapped withthe wrapping tube, and fastened with ties.

20. During the process of cable distribution, the surplus outdoor optical fibersshould be neatly coiled under the RRU or nearby and fastened with blackties. The bending diameter of the optical fibers should be at least 80 mm.

21. The outdoor optical fibers should be fastened steadily when distributedon the outdoor cable tray, and shall not be fastened too hard. Thefastening interval should be no more than 1 m in horizontal distribution,and no more than 0.8 m in vertical distribution. Both the two sides of thebend should be fastened steadily. The outdoor optical fibers and outdoorDC cables should be fastened separately, with no limitation on fasteninginterval in horizontal distribution.

22. The outdoor optical fibers shall not inter-twist or wring when they aredistributed.

23. No other heavy cables should be laid on the top of the outdoor opticalfibers after distribution. And they shall be kept from the sharp edges ofother objects.

24. When optical fiber connector at the BBU side is connected to opticalmodule, the enclosure of the connector should be grasped in hand andplugged into optical module, rather than the sheath at its bottom.

25. When the optical fiber connector at the RRU side is connected to theoptical module, the optical fiber should be fastened steadily with ties 1 mto 2 m away from optical fiber connector. And then, the connection shouldbe made according to right procedures (The diagram of connectingprocedures hung on the optical fiber at the RRU side should be read).

When the connector of optical fiber is plugged, the inner sleeve andoptical fiber plug should be grasped within one hand, and the connectorof optical fiber should be pushed slowly into the optical module in rightdirection after careful observation.

26. After the outdoor optical fiber is connected to the RRU, it is necessary towrap the connectors. The connectors should be wrapped with 2 layers ofvinyl electrical tape first from top to bottom at the first time and then frombottom to top at the second time. After wrapping, the end of the tapeshould be fastened tightly with a black tie, to prevent the tape fromturning up. Note: The tape should be wrapped in the direction in whichthe connectors are tightened. It is prohibited to wrap in the reversedirection.


19/27



27. The idle optical fiber connectors should be covered with the dustproofcap, and put at the place where it is not easy for the connectors to betreaded or damaged. The removed optical fiber head should be coveredwith the protective cap, and put at the place away from tread or damage.

During installation, it is forbidden to rub the optical fiber head with hands.28. The optical connectors of the idle optical fibers should be covered with

protective cap.


20/27



Chapter 6 Installation of Antennas andFeeder System6.1 Installation of Antenna Mount

1. The locations of the antenna mount should comply with the engineeringdesign documents.

2. The antenna mount should be fixed firmly. It is recommended to selectpoles whose thickness is at least 2 mm and diameter is longer than 60 mmor poles that meet the design requirements.

3. The antenna poles should be erect, with a vertical deviation less than 2allowed.

4. When the engineering workers fix the antenna mount, the originalwaterproof layer of the rooftop shall not be destroyed. Concrete piers arerecommended to fix them. Perforation should be avoided. If perforation isrequired, waterproof measures must be taken.

5. All the antenna mount poles on the iron tower should be fixed to the irontower firmly and securely.

6. All the antenna mount poles must be fixed firmly and unmovable. And theymust meet the windproof requirements (against the strong wind of scale 12at least or as per the engineering requirements).

7. The antenna mount must be grounded and within the 45 protection rangeof the lightning rod.

8. The naked supports, bolt joints and welds should have antirust and

anti-corrosion treatment.

9. The supporting rods of all antennas shall be securely installed and shall notshake. It shall satisfy the wind resistance requirements. The masts used forroof installation shall be grounded and fall within the effective lightningprotection range.

10. All antenna supports shall be installed steadily, well grounded and verticalto the ground with a vertical error less than 2.

6.2 Antenna System

1. Antenna model should meet the engineering design requirements.

2. Antenna height and its installation position should meet the engineeringdesign requirements, and the top of antennas should be 1 m lower thanthe tip of the lightning rod.

3. Antenna should be kept within the 45 protection range of the lightningrod and the horizontal spacing between omnidirectional antennas andlightning rod should be at least 1.5 m in high mountains and areas thatare frequently visited by thunderstorms (over 180 days a year), theantenna should be within the 30 protection range of the lightning rod.


21/27



1- Lightning rod 2- protection angle3- Antenna 4-Grounding cable of lightning rod

4. The error of azimuth of the directional antennas shall not be more than

5, that of pitch angle of the directional antennas shall not be more than 0.5, and the pitch angle and azimuth of the monopole antennas of thesame sector shall be the consistent.

5. The diversity distance between two dual-polarization antennas ofdifferent sections shall be at least 300mm.

6. The horizontal and vertical isolation of the WCDMA NodeB and the othertypes of base station antennas shall comply with the network designrequirements.

Vertical. >=0.45m

Horizontal: >=1.3m for GSM850 and 1.8m for D-AMPS

To another GSM tower: >= 100m

To another tower with antennas in confronting lobes >=150m

Back to Back >=50cm

7. The tower amplifier and the regulator of electrically regulated antennasare installed in proper positions. For the amplifier, the side to connect theantenna shall be upward and the side to connect the feeder shall bedownward. And the amplifier shall be near the antenna.

6.3 Feeder Installation

1. It is unnecessary to install the lightning rod for RRU feeders. If the distancebetween the antenna and RRU is shorter than 20 m, they should be directlyconnected with a 1/2 feeder/Jumper. If the distance is shorter than 60 m,they should be connected with the rooftop jumper, 7/8 feeder and antenna

jumper. And if the distance is longer than 60 m, they should be connectedwith the rooftop jumper, 5/4 feeder and antenna jumper.

2. At the joint of a jumper and an antenna, the jumper should keep straight for200 mm. At the joint of a jumper and a feeder, both the jumper and thefeeder should keep straight for 200 mm.

3. The feeders should be laid neatly and tidily with a consistent radian. Theyshall not wring or inter twist.


22/27



4. The curve of feeder should be smooth and round, with the bending radiusat least 20 times that of the feeder external diameter (for the soft feeder, atleast 10 times that of its external diameter). The feeders may not bendrepeatedly. If it is needed to bend id repeatedly making a coil, the bending

diameter should be at least 50cm.5. The feeder connectors should be made properly and securely. During the

installation, they should be screwed down with a wrench.

6. The feeder shall have no signs of fold or wring. Copper of the feeder shallnot be exposed.

7. The dual and the triple clips/clamps are recommended, with every 1 m ofthe vertical feeder fastened by one clip and every 1.5 m of the horizontalfeeder fastened by one clip. The clips should be evenly distributed and inthe same direction. The fixed clips should be tightened.

8. After the fixation of the connectors between the antenna and the jumperand those between the jumper and the feeder, and the grounding pointbetween the feeder and grounding clip, all connectors should be sealed inthe mode 1-3-3 (1 layer of vinyl electrical tape + 3 layers of rubber mastictape + 3 layer of vinyl electrical tape). When wrapping using the rubbermastic tape, it is required to stretch it to make its width narrow to 70%~50%of the original. The connector between the antenna and the jumper shouldbe wrapped from the bottom up. And finally, both ends of the connectorsshould be bound with black ties. Note: The wrapping direction should beconsistent with the screwing direction of the connectors. It is prohibited towrap in the reverse direction.

9. The cabling route should keep straight without bends within 200 mm fromthe RF connector.

10. The outdoor jumpers that connect antennas should be fixed reliably alongthe iron tower rail or the pole to avoid excessive or repeated bends causedby heavy winds.

11. The grounding point of the feeder should meet the following requirements:

i. If the feeder length 5 m, the grounding point is not required.

ii. If feeder length is between 5 and10 m, one grounding point is requiredwithin 2 m from the RRU-feeder connector side.

iii. If the feeder length is between 10 and 20 m, two grounding points arerequired, one point within 2 m from the RRU-feeder connector and theother within 2 m from the antenna-feeder connector.

iv. If feeder length is between 20 and 60 m, three grounding points arerequired: one point within 2 m from feeder-jumper connector atantenna side, one within 2 m from feeder-jumper connector at theRRU side or 2 m from feeder window outdoor, and one is within 2 mfrom the point where the feeder leaves the iron tower or the rooftop.

v. If the feeder length 60m, one grounding point should be added every20 more meters.

12. The feeder grounding cable should be from top down (in the case ofvertical grounding), with an angle not more than 15 to the feeder. And thegrounding cable must have good electric contact with the ground bar or theiron tower body. And it shall not be suspended it the air. If the iron tower

has no ground bar, the grounding terminals of the feeder and the TMA


23/27



(tower mounted amplifier) can be fastened to the tower body separately.Each fastening point can connect at most two terminals. Besides, thelacquer layers at the grounding points must be removed to ensure reliableelectric connection. After connection, it should have anti-corrosion

treatment.13. If feeders are higher than the bottom of the feeder outlet, the water-drip

bend should be made before the feeders enter the equipment room. Thelowest point of every feeder after the water-drip bend should be 10 cm to15 cm lower than that of the feeder outlet. If feeders are lower than thebottom of the feeder outlet, the water-drip bend is unnecessary to be made.

14. The down-leading ladder should be grounded if it is used to lead the feederalong the wall from the building top down to the equipment room.

15. Both the indoor part and the outdoor part of the feeder near the feeder holeshould keep straight for at least 0.4 m.

16. ,The feeder outlet must be sealed securely after the feeder enters theequipment room.

17. Master and diversity antennas in all sectors should correspond to theproper rack-top jumpers in a one-to-one manner.

18. The VSWR of the antenna feeder system should be less than 1.5.

6.4 Grounding Cables

1. If the soil resistivity of the site is lower than 700m, the groundresistance for the site should be less than 10. Otherwise, the equivalentradius of the ground grid should be at least 20m, and horizontal radiantground conductors that are 20~30m long should be laid at the fourcorners of the ground grid.

2. The route must be correct and comply with the engineering designrequirements. The bends of feeders must be round and smooth, with abending radius at least 20 times the outer diameter of the feeder (thebending radius of a soft feeder shall be at least 10 times the outerdiameter of the feeder). The feeders shall not be bent repeatedly.

3. The oxidization layer of the grounding point shall be removed first beforethe outdoor feeder is grounded. Each grounding terminal shall beseparately connected and fastened. If the feeder is not long enough, itshall never be joined with another feeder to form a longer one. In addition,the grounding terminals shall have anti-corrosion treatment.


24/27



Chapter 7 Installation of GPS Antenna andFeeders (Optional)

1. The installation position of the antenna should first satisfy the engineeringrequirements. Then, it should be installed as close to the equipment room aspossible, so as to save the feeder length. When the GPS antenna is installed at thetop of the building, it can be installed on the parapet pole, horizontal cable tray, orthe pole beside the horizontal cable tray. When it is installed at the pole beside thehorizontal cable tray, the distance between the pole and the cable tray should notbe longer than 20 cm. The antenna should not be installed at the tower top. If itmust be installed at the lateral part of the tower, the installation height cannotexceed 5 m. Under this condition, the projecting pole can be used, and the distancebetween the pole and tower should be more than 1 m.

2. The support for the GPS antenna should be installed vertically, with a verticaldeviation less than 2 allowed.

3. The sky view of the location where the GPS antenna is installed should be wide. Atthat spot, you should be able to trace at least four GPS satellites with a handheldGPS. The elevation of GPS antenna should be larger than 90.

4. The GPS antenna should be installed within the 45 protection range of the lightningrod.

5. The outdoor feeder that connects GPS antennas should be fixed reliably along thepole to avoid excessive or repeated bends caused by heavy winds.

6. The feeder is only allowed to be grounded at one point. In other words, the feeder ofthe GPS antenna should be grounded 1 m away from the equipment room.

7. The ground cables of the feeder must have good electric contact with the ground

copper bar. And they shall not be suspended in the air.8. The feeders shall not intertwist. They should be laid neatly and straightly, with the

same curvature.

9. The curve of feeder should be smooth and round, with the bending radius at least20 times that of the feeder external diameter. For the soft feeder, the bending radiusshould be at least 10 times that of its external diameter. The feeders shall not bendrepeatedly.

10. The feeder should have no mark of fold, wring, or any sign of damage.

11. When the feeders are routed along the cable tray, they should be bundled withproper tightness. In horizontal cabling, the interval between two neighboring tiesshould not exceed 1 m and in vertical cabling, the interval between two neighboring

ties should not exceed 0.8 m. If the feeders are bent, the ties should be bound atboth sides of the bundle bend.

12. The feeder connectors and ground clips should both have the waterproof treatment:they should be wrapped in the mode of "1 layer of vinyl electrical tape 3 layers ofrubber mastic tape 3 layers of vinyl electrical tape." After the connectors arewrapped securely, both ends should be bound with black ties.

13. The cabling route should keep straight without bends within 200 mm from the RFconnector.

14. When the feeders are routed from indoor to outdoor, they shall be routed along theweak electricity well rather than the outer wall of the building.

15. When the feeders are routed outdoors, they shall not cling to the lightning protective

strip when they are routed under the lightning protective strip, the distance between


25/27



them should be more than 200 mm. It is prohibited to suspend the cables during thecabling.

16. Before the feeders enter the equipment room, if the feeders are higher than thebottom of the feeder outlet, a water-drip bend should be made outside the feeder

outlet. After the water-drip bend is made, the lowest point of each feeder should be10 cm to 15 cm lower than the bottom of the feeder outlet. However, if the feedersare already lower than the feeder outlet before they enter the equipment room, thewater-drip bend is not required.

17. The feeders, AC power cables, and signal cables (DC power cables) should be laidseparately. They should not go through the same feeder hole.

18. The GPS lightning rod should be installed on the support attached to the equipmentshell. To ensure good electric connection between the equipment shell and theGPS lightning rod shell (N end), the contact surface between the support and theGPS lightning rod should not be painted.

19. It is not required to install a special ground cable for the GPS lightning rod. If the

customer requires to install a ground cable for the GPS lightning rod, this groundcable should be connected the ground stud or bar.


26/27



Chapter 8 Assembly, Labels and Others8.1 Equipment and Assembly

1. The cabinet and its door shall not be damaged or deformed and theyshall be free of scratches or paint fall-off. The places where the paint hasfallen off shall be re-painted in the same color.

2. At least one antistatic wrist strap shall be equipped in each cabinet. TheESD jacks must be installed firmly.

3. The air intakes and outtakes of the fans shall not be blocked.

4. The cabinets shall not be used to store sundries such as tools or spareparts. There shall be no redundant or waste engineering materials suchas cable ties or bolts inside the cabinets.

5. There shall be no obvious dust inside the cabinets and on the floor

beneath the cabinets.6. All dummy extractors and the blank filler panels should be installed.

7. The connectors shall all be securely connected, the bolts fixing theboards shall all be tightened, and the fastening clips shall be in positionand not damaged.

8. Protection caps shall be applied to the idle optical interfaces and sockets.

9. The cable holes in the cabinet shall be well protected and sealed.

10. The cabinet door can be opened and closed smoothly.

11. The cabinet surfaces shall all be clean.

12. All the fixing bolts shall be screwed tightly.

13. For outdoor cabinets, waterproofing and sealing treatment must beapplied to the cabling holes and the spacing between cabinets.

14. A complete set of pictures has been taken from relevant installationcomponents

8.2 Labels

1. The power cable breakers for the ZTE equipment in the power cabinetand power distribution box shall bear labels indicating the cabledirections.

2. The labels for the above breakers shall be pasted tidily.3. Both ends for all cables must bear labels. The labels inside the cabinet

shall be standard paster labels and the labels outside the cabinet shall beplastic tags.

4. Outdoor labels for fibers and DC power or RRU should be fixed on everyworking platform if the tower height >=30m.

5. The feeder labels shall be outdoor tags. They shall be one for theantenna feeder, three for the outdoor feeders (one point near the antennafeeder connector, one near the cabinet inlet before the feeder enters thecabinet, and one before it leaves the iron tower or rooftop), and one nearthe rack-top jumper.


27/27


6. The feeder shall be labeled, with the label 200mm away from theconnector.

7. The cables in the cabinet shall be labeled at consistent positions. Thepower cables, ground cables, transmission cables and optical fibers shall

be labeled, with the labels 20mm away from the cable ends.

8. No label should be pasted and no mark should be written on the surface.If it is required, the handwriting should be neat and the labels should bepasted tidily.

9. The label should mark out the equipment name (number) and theinterface position as detailed as possible, such as Equipment name(number) Interface No. It is prohibited to use simple numbers to markthe labels.

10. The labels shall be pasted in the same direction, with the side indicatingthe cable directions upward or facing the maintenance and operationplanes for the convenience of reading.

8.3 Others

1. All the installation tools shall meet the antistatic requirements.

2. The board unpacking and plugging/unplugging shall meet the antistaticoperational requirements.

3. To facilitate subsequent expansions, signal cables that are delivered forexpansions shall be bond or placed in the to-be-expanded cabinet.

4. Protective measures shall be taken for the idle plugs. For example, theprotective caps can be used.

5. The equipment room and equipment area shall be clean and tidy. Theuseless packing boxes shall be removed. And the spare parts shall beplaced in order in a secure location.

6. The specification of the fuse shall comply with the nominal capacity.

bts zxsdrnodeb

Documents