SWAN1800V BS Engineering Installation Manual V1.01

Engineering Installation Manual Base-station System Section

Beijing Xinwei Telecom Technology Co., LTD Add: No.7 Building Zhongguancun Software Park, No.8 Dongbeiwang West Road,Haidian District, Beijing P.R.CHINA Telephone:86-10-62802288 Fax: 86-10-62802299 Http: www.xinwei.com.cn

V1.01（Cver2.01）

Proprietary Copyright Beijing Xinwei Telecom Technology Co., LTD All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

SCDMA Integrated Wireless Access System

Contents

BEIJING XINWEI TELECOM TECHNOLOGY CO., LTD

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Contents Chapter 1 Construction Flow.................................................................................................................1

1.1 Construction flow chart...............................................................................................................1 1.2 Explanation .................................................................................................................................1

Chapter 2 Construction Preparation.....................................................................................................3 2.1 Construction Materials Preparation.............................................................................................3 2.2 Construction Tools Preparation ...................................................................................................3 2.3 Working Parts Preparation...........................................................................................................4

2.3.1 Material Specification and Model....................................................................................4 2.3.2 Splicing pole Preparation ................................................................................................5 2.3.3 Cable ladder Preparation ................................................................................................6 2.3.4 Triangular tower Preparation ..........................................................................................8 2.3.5 Anti-oxidation Treatment for Work-piece .........................................................................9

Chapter 3 Install Antenna Feeder System .......................................................................................... 11 3.1 Install Splicing Pole and Cable Ladder .....................................................................................11

3.1.1 Install Splicing Pole ....................................................................................................... 11 3.1.2 Install Cable ladder........................................................................................................18

3.2 Install Antenna ..........................................................................................................................22 3.2.1 Install Omni-directional Antenna...................................................................................22 3.2.2 Install Directional Antenna ............................................................................................26

3.3 Install Tower Top Amplifier (TTA) ...........................................................................................31 3.3.1 Install TTA......................................................................................................................31 3.3.2 Connect Cables of TTA...................................................................................................34

3.4 Install GPS ................................................................................................................................35 3.4.1 GPS Structure.................................................................................................................35 3.4.2 Installation requirements of GPS ...................................................................................35 3.4.3 Installation Procedures of GPS......................................................................................36 3.4.4 Layout and Connection of GPS Feeders ........................................................................37

3.5 Install Feeder Cables .................................................................................................................37 3.5.1 Connect Feeder Cables ..................................................................................................37 3.5.2 Grounding Feeder Cables ..............................................................................................38 3.5.3 Install Feeder Cables .....................................................................................................38 3.5.4 Install Feeder Window ...................................................................................................39

Chapter 4 Install BS indoors................................................................................................................41 4.1 Install Cabinets..........................................................................................................................41

4.1.1 Cabinet Structure ...........................................................................................................41 4.1.2 Position and Install Cabinets .........................................................................................42

4.2 Install BTS ................................................................................................................................43 4.3 Connect E1 Transmission Cable ...............................................................................................44

4.3.1 E1 for BTS and DDF......................................................................................................44 4.3.2 Connect E1.....................................................................................................................44

4.4 Connect Power Cables ..............................................................................................................45 4.4.1 Notice .............................................................................................................................45 4.4.2 Connect Power Cables...................................................................................................45

4.5 Cabling Requirement in Equipment Room ...............................................................................47 Chapter 5 Fabricate Cables..................................................................................................................49

5.1 Fabricate RF Feeders.................................................................................................................49 5.1.1 Fabricate 1/2” RF Feeder Cables .................................................................................49 5.1.2 Fabricate 7D-FB RF Feeder Cables..............................................................................50

5.2 Fabricate Power Cables for TTA...............................................................................................51 5.3 Fabricate E1 ..............................................................................................................................53 5.4 Fabricate Grounding Cables for Feeders...................................................................................54

5.4.1 Fabricate Grounding Cable for ½’ Feeders...................................................................54 5.4.2 Fabricate Grounding Cable for 7D-FB Feeder .............................................................54

5.5 Fabricate Ground Cable of Power Cable for TTA.....................................................................55 Appendix A Continuity Test for Antenna Feeder and Power Cables................................................57

A.1 Continuity Test for Feeders ......................................................................................................57 A.2 Continuity Test for TTA’s Power Cable....................................................................................57

Contents


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Appendix B Cable Labels and Bundling Specifications .................................................................59 B.1 Label Specifications .................................................................................................................59 B.2 Cable Bundling and Distribution Specifications ......................................................................60

Appendix C Grounding and Waterproof Treatment .........................................................................63 C.1 Grounding Processes ................................................................................................................63 C.2 Waterproof Treatment Processes ..............................................................................................64

Table 2-1 Tools in common use .............................................................................................................3 Table 2-2 Special tools and instruments.................................................................................................3 Table 2-3 Material specification, model and purpose ............................................................................4 Table 5-1 Connection instructions for power cables and aeronautical connectors...............................52

Chapter 1 Construction Flow


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1.1 Construction flow chart

Start

Construction Preparation

Construction Tool Preparation

Construction Material Preparation

Station Site Engineering Survey Report

Station Site Engineering Design Report

Cable Ladder Fixing Indoor

Cable Ladder Installation

Outdoor Cable Ladder

Installation

Cable Ladder Grounding

Calbe Ladder Assembly

Cable Ladder Fixing

Cable Ladder Grounding

Cabinet Installation

Cabinet Positioning

Cabinet Fixing

Cabinet Grounding

Cabinet LevelingAntenna

Installation

Short Feeder Connection

Antenna Data Record

Omni Antenna Verticality

Directional Antenna Down tilt

Antenna Fixing

TTA Installation

TTA Fixing

Water Proof Treatment

TTA Power Cable Laying

TTA Grounding

Short Feeder Connection Fixing

BS Cable Laying

E1 Cable

BS Grounding Cable

BS Power Cable

GPS InstallationGPS Positioning

GPS FixingGPS线布放

Feeder Installation

Feeder Clamp FixingCable Fixing

Cable Connection (TTA Cabinet)

Cable Grounding

Water Proof Treatment

Feeder Window InstallationFeeder Window Sealing

BTS Installation

BTS Fixing

BTS Data Record

Lightning Protection Box

E1 Cable Connection

Grounding Connection

Power Cable Connection (-48V, Lightning Protection Box)

Engieering Acceptance

Check BTS Information Record List

Station site Construction Acceptance Check Record

End Station Site Construction

Splicing Pole Installation

Splicing Pole Fixing

Lightning Rod Installation

Splicing Pole Grounding

Splicing Pole Verticality

1.2 Explanation 1 Construction flow chart is to guide construction personnel for systematic and standardized

construction on the basis of station site engineering survey report and engineering design report. 2 Installation of the antenna feeder system and base station system in the construction flow chart is

to be in parallel, which can not only distinguish their sequence, but also construct simultaneously.



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3 Contents such as anti-oxidation treatment, water proofing, label indication, and feed line seizing etc. in the construction flow chart that have not been involved will have detailed explanation in the subsequent chapters.

4 The portion with broken line in the construction flow chart is determined by use of the cable ladder at the construction site; if assembly is used, then cable ladder assembly at the construction site is necessary. The offshoots of the construction flow chart are important works to be completed at each flow.

Chapter 2 Construction Preparation


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2.1 Construction Materials Preparation ‘SCDMA Wireless Network BS Site Engineering Survey and Design Specification’ ‘XX Station Site Engineering Survey Report’ ‘XX Station Site Engineering Design Report’ ‘SCDMA System Engineering Construction Table’ ‘SWAN1800V BS Engineering Installation Manual’ ‘Base Station Information Record Table’ ‘XX Station Location Engineering Construction Acceptance Check Report’

2.2 Construction Tools Preparation In general, to complete the engineering installation, it is necessary to prepare the tools and

instruments listed in Table 2-1 and Table 2-2:

Table 2-1 Tools in common use

No. Measure Marking

Tools Concrete Punching

Tools Fastening Tools

Locksmith Tools

1 One set of 50m tape measure

Percussive drilling A number of screwdrivers, ‘+’ type and ‘-’ type

One hacksaw

2 One set of 5m reel tape

A number of supporting drill heads

Monkey wrench One long nose pliers

3 One set of 400mm level bar

One power junction board, with two-phase and three-phase sockets, with current capacity exceeding 15A

Dull wrench 15 Dull wrench 16 Dull wrench 18-20

One pliers

4 Compass (59 type) (65 type)

One nail hammer Diagonal pliers

5 One marking chalk Assorted file

Table 2-2 Special tools and instruments

No. Built for Purpose Tools Instrument List Safety Tools Auxiliary Tools

1 One single side blade One multi-meter Safety helmetOne 40W brand iron



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No. Built for Purpose Tools Instrument List Safety Tools Auxiliary Tools

2 One round blade Standing wave apparatus (Site master)

Safety belt Some tin wire

3 One multifunctional wire stripping pliers

Terra-meter Safety rope Ladder

4 One multifunctional Crimping pliers

Magnetic thickness tester

Rope

5 N type (dual-female converter)

Cleaner

6 N type (dual-male converter)

A number of welding rods

7 Welding machine

2.3 Working Parts Preparation

2.3.1 Material Specification and Model

Table 2-3 Material specification, model and purpose

Material Description

Specification Model(Unit: mm)

Purpose

Welded steel pipe

Ф88.5×4 3” splicing pole

Welded steel pipe

Ф114×4 4” splicing pole

Round steel Ф16 Lightning rod

Steel Plate 5 Cable ladder connection block, Mounting component

Steel Plate 10 Flange reinforcement

Steel Plate 14 Flange

Stainless Steel Screw

M16×400 Screw, nut, spring cushion, flat washer, (Anchor ear)


M12×80 Mounting screw for cable ladder (optional)


M20×80 Flange connection screw, nut, spring washer, flat washer

Expansion bolt M24×300 Expansion bolt (for flange grounding)

Expansion bolt M16×250 Expansion bolt (anchor ear)

V-iron 80×5 materials used by anchor ear



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Angle iron 50×5 Step, cable ladder and mounting component

Galvanized Steel Wire

Ф8（7×7） Dragline

2.3.2 Splicing pole Preparation

1 Fabricate 3-meter splicing poles with standard 3” or 4” galvanized pipe. (The OD of 3” pipe is 88.5mm, with the thickness as 4mm. The OD of 4” pipe is 114mm, with the thickness as 4mm). If connection is required between the splicing poles, flange is required. For the splicing pole and flange, reinforcement bars should be welded, as shown in Figure 2-1;

Figure 2-1 Splicing poles

2 For the sake of easy installation and maintenance of antennas, feeders and tower top amplifiers and for standard cabling, steps should be welded on the splicing pole at an interval of 350mm (Note: The materials for steps should meet the requirement stated in Table 2-3, so 250mm×50mm×5mm angle iron, instead of round iron or any other material, should be used, which is helpful for the installation and fixing of feeder clamps, and thus feeders can be laid out in a tidy order), as shown in Figure 2-2;

Figure 2-2 Steps



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3 All mounting and supporting ware fabricated on the site must be strong enough. All steel materials must be properly treated for anti-oxidation. Normally hot galvanization is required for this purpose. In the engineering process on the construction site, welding is not allowed in principle. If necessary, welding can be done only on the splicing pole and the grounding point of the lightning rod. This is to minimize the grounding resistance, but the welding interface must be strictly treated for anti-oxidation;

4 On the top of the splicing pole, a flange is used to connect the lightning rod made of round steel (Φ16, 2500mm or 1000mm long). (The 2500mm lightning rod is used on the splicing pole of the omni-directional antenna, while the 1000mm lightning rod is used on the splicing pole of the directional antenna). See Figure 2-3 and Figure 2-4.

Figure 2-3 2.5-meter lightning rod

Figure 2-4 1-meter lightning rod

2.3.3 Cable ladder Preparation

2.3.3.1 Welding Mode Cable Ladder 1 Select 50mm×5mm angle iron or V-iron as cable ladder materials, with each angel iron or V-iron

being 3000mm long, and each cross-bearer angle iron or V-iron being 200mm, 400mm and 600mm long, and different length of which are used in different places, and therefore it is suggested to use 400mm cross-bearer. See Figure 2-5:



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Figure 2-5 Welding mode cable ladder components

2 Cross-bearer is to be welded or screw fixed in the middle for each length of 400mm. See Figure 2-6 for the cable ladder structure.

Figure 2-6 Welding mode cable ladder structure

3 When engineering installation requires the cable ladder to be very long, (multi-section cable ladder connection can be adopted), and the connection components shall be flat steel of 200mm×50mm×5mm, as shown in Figure 2-7.

Figure 2-7 Welding mode cable ladder connection

2.3.3.2 Assembling Mode Cable Ladder 1 Cable ladder may use angle iron, to be screw assembled at site, provided that there must be screw

hole in the angle iron. See Figure 2-8 for 3000mm and 400mm angle irons:



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Figure 2-8 Assembling mode cable ladder components

2 Cable ladder assembled at site and the cable ladder welded is of the same structure. See Figure 2-9 for their structure.

Figure 2-9 Assembling mode cable ladder structure

3 When the cable ladder used at site is more than 3 meters, and therefore it is required that each cable ladder be connected together. Use work-piece of 200mm×50mm×5mm indicated in Figure 2-10, to have the cable ladders connected, to form one whole body.

Figure 2-10 Cable ladder connection work-piece

2.3.4 Triangular tower Preparation

1 Please refer to the material specifications stated in Table 2-3 and the splicing pole preparation



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described in 2.3.2 , select the right material and fabricate a number of splicing poles. Connect the splicing poles through flanges to the desired length according to the requirement of the triangular tower on the construction site.

2 When installing the triangular tower, specific accessories are needed to assemble a complete triangular tower. U-type bolts are used to fix angle iron to splicing poles. 3” and 4” splicing poles require different U-type bolts of different bending radius. As shown in Figure 2-11, the length of the angle iron must be determined on the site according to the distance between splicing poles.

Figure 2-11 Fixing accessories of triangular tower

3 According to the requirement of lightning rods, prepare 3 lightning rods of the same model.

2.3.5 Anti-oxidation Treatment for Work-piece

During the installation of the SCDMA system, the materials for work pieces and the finished work pieces must be properly treated for anti-oxidation before being transferred to the engineering site. Work pieces fabricated on the site must be hot galvanized. After galvanization, the surface of finished working pieces must be smooth and even, without any bubbling and burr on the surface, to prevent damaging feeder and power cables upon cabling. Make sure to measure the thickness with magnetic calibrator. The zinc coat thickness should be no thinner than 86μm.

On the fabricating site, damage to the anti-oxidation coating such as welding should not be allowed. However, to meet the grounding requirement of splicing poles and lightning rods, splicing poles and lightning rods can be welded with the grounding poles of the building. After welding, make sure to complete anti-oxidation treatment for the newly welding points.

Chapter 3 Install Antenna Feeder System


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3.1 Install Splicing Pole and Cable Ladder

3.1.1 Install Splicing Pole

3.1.1.1 Install 3-meter Splicing Pole 3.1.1.1.1 Wall Mounting Installation of 3-meter Splicing Pole

1 Select the right 3-meter splicing pole, lightning rod, anchor ears and expansion bolts to prepare for the installation;

2 Connect the lightning rod and the splicing pole; 3 Determine the installation location of the splicing pole based on the engineering design file; 4 Determine the installation locations of anchor ears. Drill holes in the wall with a punch drill and

right bit, as shown in Figure 3-1;

Figure 3-1 Fix 3-meter splicing pole on the wall

5 Fix the splicing pole on the wall with expansion bolts and anchor ears. Besides, the splicing pole must be secured with a drag rod. One end of the drag rod is fixed on the ground, while the other end is fixed on the splicing pole with anchor ears, as shown in Figure 3-2;

Figure 3-2 Install wall-mounting drag rod for the 3-meter splicing pole



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6 Both the pole body and the lightning rod are grounded, with the grounding resistance no greater than 5ohm.

3.1.1.1.2 Install 3-meter Splicing Pole on Building Top

1 Select the right 3-meter splicing pole, lightning rod, anchor ears and expansion bolts to prepare for the installation;

2 Connect the lightning rod and the splicing pole; 3 Determine the installation location of the splicing pole on the building top based on the

engineering design file; 4 Make a cement base at the installation location with acceptable construction materials, such as

cement mortar; 5 Drill holes in the base with a punch drill and right bit, and then fix the splicing pole in the cement

base on the building top with expansion bolts; 6 Tilt drag rods must be used to fix the splicing pole in the base. The splicing pole must be

positioned vertically. One end of the drag rod is fixed on the floor, while the other end is fixed on the splicing pole with anchor ears, as shown in Figure 3-3;

Figure 3-3 Install 3-meter splicing pole on building top

7 Both the pole body and the lightning rod are grounded, with the grounding resistance no greater than 5ohm;

8 After installation, make sure to reinforce the base with cement mortar, repair the damaged parts on the building top and complete waterproof treatment for the damaged parts. The cement specification, the blending ratio of cement and sand, and the reserved length of bolts should meet the construction requirements.

3.1.1.2 Install 6-meter Splicing Pole 3.1.1.2.1 Wall Mounting Installation of 6-meter Splicing Pole

1 Select two 3-meter splicing poles, lightning rod, anchor ears, expansion bolts and drag rods to prepare for the installation;

2 Connect two splicing poles and then connect the lightning rod and the splicing poles; As shown in Figure 3-4.



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Figure 3-4 Connect two splicing poles

3 Determine the installation location of the splicing pole based on the engineering design file; 4 Tilt drag rods together with anchor ears must be used to fix the 6-meter splicing pole on the wall.

Fix the splicing pole with expansion bolts and anchor ears on the wall. One end of the drag rod or dragline is fixed on the floor, while the other end is fixed on the splicing pole with anchor ears, as shown in Figure 3-5;

Figure 3-5 Install wall-mounting 6M splicing pole

5 Both the pole body and the lightning rod are grounded properly, with the grounding resistance no greater than 5ohm.

6 After installation, make sure to repair the damaged parts on the building floor and complete waterproof treatment for the damaged parts. The reserved bolt length should meet the requirements for construction engineering.



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3.1.1.2.2 Install 6-meter Splicing pole on Building top

1 Select two 3-meter splicing poles, lightning rod, anchor ears, expansion bolts, drag rods or draglines, joint the two splicing poles and then connect the lightning rod to the splicing pole to prepare for the installation;

2 Determine the installation location of the splicing pole on the building top based on the engineering design file;

3 Tilt drag steel cables or drag rods must be used to fix the splicing pole in the base, make sure to splicing pole is installed vertically and firmly. One end of the drag rod or dragline is fixed on the floor, while the other end is fixed on the splicing pole with anchor ears. The height of anchor ears meet the requirement of the engineering design, as shown in Figure 3-6;

Figure 3-6 Install dragline-supported 6M splicing pole

4 Both the pole body and the lightning rod are grounded properly, with the grounding resistance no greater than 5ohm.

5 After installation, make sure to reinforce the base with cement mortar, repair the damaged parts on the building top and complete waterproof treatment for the damaged parts. The cement specification, the blending ratio of cement and sand, and the reserved length of bolts should meet the construction requirements.

3.1.1.3 Install Other Splicing Poles The 9-meter splicing pole consists of two 4” splicing poles, one 3” splicing pole. Connect the two

4” splicing poles together. During installation, fix the two 4” splicing poles on the floor, install the antenna on the 3” splicing pole. At least two layers of draglines are used on the 6th meter and 9th meter respectively. For each layer, at least three draglines are used. Namely, the separation angle between the planes made up of draglines and the splicing pole is 120°, as shown in Figure 3-7.



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The 12-meter splicing pole consists of two 4” splicing poles and two 3” splicing poles. Connect the 4” ones together and the 3” ones together, and then joint the two sections. Upon installation, fix the 4” splicing pole on the floor and install the antenna on the 3” splicing pole. At least two layers of draglines are used respectively at the 9th meter and the 12th meter. For each layers, at least 3 draglines are used. Namely, the separation angle between the planes made up of draglines and the splicing pole is 120°, as shown in Figure 3-8;



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The 15-meter splicing pole consists of four 4” splicing poles and one 3” splicing pole. Connect the 4” ones together. Upon installation, fix the 4” splicing pole on the floor and install the antenna on the 3” splicing pole. At least three layers of draglines are used respectively at the 6th meter, 12th meter and the 15th meter. For each layers, at least 3 draglines are used. Namely, the separation angle between the planes made up of draglines and the splicing pole is 120°, as shown in Figure 3-9.



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3.1.1.4 Install Triangular Tower 1 Prepare all accessories and splicing poles to be used in the installation and all tools to be needed

during engineering; 2 Install the three splicing poles at the corresponding positions as per the engineering design. The

triangular tower consists of 3-meter splicing poles jointed through flanges. Its height can be set as required;

3 Use angle irons to fix adjacent splicing poles as shown in Figure 3-10. Secure the installed angle irons with bolt;



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Figure 3-10 Install the triangular tower

4 Install the antenna’s lightning rods to the top of each corresponding splicing poles of triangular tower. Fig. 3-11 shows the effect of the completed installation.

Figure 3-11 Install lightning rods on the triangular tower

3.1.2 Install Cable ladder

3.1.2.1 Cable Ladder Functions As the function of cable ladder is to support various kinds of cables, power lines, transmission

lines, and feed line cables etc., and it is therefore required that cable ladders installation must facilitate the laying and arrangement of various kinds of cables. For outdoor feeder (feed line) laying, cable ladder plays a very important role. Caution should be taken that the cable ladder must be insulated from



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the ground, the wall, and the rooftop, and that the cable ladder must be connected to the lighting protection ground network of the building in strict accordance with the grounding requirements, besides, it is necessary to consider the equipotential grounding requirements between cable ladders.

3.1.2.2 Install Cable Ladder 3.1.2.2.1 Hoisting Installation of Cable ladder

1 Take out certain number of cable ladders and have them connected using bolts according to requirements. See Figure 3-12 as indicated:

Figure 3-12 Cable ladder connections

2 Install the cable ladder suspender at the rooftop within the machine room. If the cable ladder length exceeds 3000mm, one suspender should be added, so on and so forth. See Figure 3-13 for suspender installation as indicated below:

Figure 3-13 Cable ladder hoisting installation

3.1.2.2.2 Ground Bracing Installation of Cable ladder

1 Take out certain number of cable ladders, and have them connected using bolts according to requirements.

2 When installing cable ladder on the flat roof of the building, the cable ladders must be supported using bracing frame; laying directly thereof on the ground is prohibited, and the height of the bracing frame should 300mm or so according to requirements. There should one bracing frame for each 3000mm interval. During engineering installation, if cable ladder length is not the integral multiples of 3000mm, the remainder may be cut off. However, paint must be applied over its cross section, to ensure that cable ladder is antirust and pleasing.



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Figure 3-14 Ground bracing cable ladder installation

3 See Figure 3-15 for ground bracing cable ladder installation when cable ladder must be installed at various height of a building:

Figure 3-15 Cable ladder installation of various height

3.1.2.2.3 Triangular Installation of Cable ladder

1 Install tripod on the wall body. See Figure 3-16 for tripod structure as indicated below:

Figure 3-16 Triangular installation piece



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2 Take out the cable ladders and have them connected to the length required according to specification, and then have them installed in the tripod, with one tripod per 3000mm space interval. During engineering installation, if cable ladder length is not the integral multiples of 3000mm, the remainder may be cut off. However, paint must be applied over its cross section, to ensure (that) cable ladder is anti-rust pleasing. See Figure 3-17 as indicated:

Figure 3-17 Triangular Cable ladder Installations

3.1.2.2.4 Wall Mounting Installation of cable ladder

1 Install L-type accessories on the wall, as shown in Figure 3-18.

Figure 3-18 Wall-mounting installation accessories

2 Install the L-type accessories on the wall, as shown in Figure 3-19.

Figure 3-19 Install L-type accessories



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3 Fix the cable ladder at boltholes on the angle irons of L-type accessories vertical to the wall, as shown in Figure 3-20.

Figure 3-20 Wall-mounting Installation of the Cable ladder

4 If the cable ladder is longer than 3 meters, one L-type accessory is required every 3 meters to secure the cable ladder.

3.2 Install Antenna

3.2.1 Install Omni-directional Antenna

3.2.1.1 Install Omni-directional Antenna on Splicing Pole 1 The outer structure of the omni-directional antenna is shown in Figure 3-21.

Figure 3-21 Omni-directional antenna

2 Record the data of the antenna and install the antenna on the top of the 3” pipe of the antenna stand. Connect the 3” pipe (inner thread) of the antenna on the 3” pipe (outer thread) of the antenna’s stand. Make sure the antenna is vertical to the horizontal level. After connection, less



23

than 4 threads will be naked on the 3” pipe of the stand, as shown in Figure 3-22;

Figure 3-22 Connect the antenna and its stand

3 Fix the 3” stand on the clamp boards. Fix one clamp board at the position 50mm to the thread and the other clamp board 500mm above the first one. Connect the short feeders between the antenna and the tower top amplifier to ports 1-8 of the antenna, and complete proper waterproof treatment. And then fix the other end of the clamp board on the upper end of the splicing pole. Make sure that the antenna’s base is on the same vertical line with the top of the 3” splicing pole, as shown in Figure 3-23;

Figure 3-23 Install clamp-supported stand

4 Make sure that the antenna is within the 45°shielding angle of the lightning rod. Adjust the clamp boards to keep the antenna vertical, so that the antenna’s verticality offset is within the range of ±0.5°. Set the direction of the each antenna. Antenna No.1 is to the east and No.3 is to the north. After this, tighten all stop bolts, as shown in Figure 3-24.



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Figure 3-24 Install the omni-directional antenna on the splicing pole

3.2.1.2 Install omni-directional Antenna on the Iron Tower 1 Record the data of the antenna and install the antenna on the top of the 3” pipe of the antenna

stand. Connect the 3” pipe (inner thread) of the antenna to the 3” pipe (outer thread) of the antenna’s rack. Make sure the antenna is vertical to the horizontal level. After connection, less than 4 threads will be naked on the 3” pipe of the stand. Connect the short feeders between the antenna and the tower top amplifier to ports 1-8 of the antenna, and complete proper waterproof treatment;

2 Extend the installation rack 1.5 meters beyond the tower’s installation point. Make sure that the antenna is within the 45°shielding angle. Secure the antenna vertically on the tower with installation accessories. The antenna’s verticality offset is within the range of ±0.5°. Tighten all bolts of the installation rack to secure the antenna firmly, as shown in Figure 3-25;



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Figure 3-25 Supported installation rack

3 The omni-directional antenna is installed on the iron tower, as shown in Figure 3-26;

Figure 3-26 Install omni-directional antenna on the iron tower

3.2.1.3 Install Omni-directional Antenna on ‘#’ Tower 1 Install the 3” splicing pole on the installation arm on the top of the tower with U-type bolts or

anchor ears, and then connect the lightning rod on the top of the splicing pole with bolts;



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2 Record the data of the antenna and install the antenna on the top of the 3” pipe of the antenna stand. Connect the 3” pipe (with inner thread) of the antenna to the 3” pipe (with outer thread) of the antenna’s rack. Make sure the antenna is vertical to the horizontal level. After connection, less than 4 threads will be naked on the 3” pipe of the stand.

3 Fix the 3” stand on the clamp boards. Fix one clamp board at the position 50mm to the thread and the other clamp board 500mm above the first one. Connect the short feeders between the antenna and the tower top amplifier to ports 1-8 of the antenna, and complete proper waterproof treatment. And then fix the other end of the clamp board on the upper end of the splicing pole. Make sure that the antenna’s base is on the same vertical line with the top of the 3” splicing pole, as shown in Figure 3-27;

Figure 3-27 Install omni-directional antenna on ‘#’ tower

4 Make sure that the antenna is within the 45° shielding angle of the lightning rod. Adjust the clamp boards to keep the antenna vertical, so that the antenna’s verticality offset is within the range of ±0.5°. Set the direction of the each antenna. Antenna No.1 is to the east and No.3 is to the north. After this, tighten all stop bolts.

3.2.2 Install Directional Antenna

3.2.2.1 Install Directional Antenna on Splicing Pole 1 The feeder port of the directional antenna is shown in Figure 3-28;



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Figure 3-28 Directional antenna

2 Record the data of the antenna; 3 Connect the short feeders between the antenna and the tower top amplifier to ports 1-8 of the

antenna, and complete proper waterproof treatment. The splicing pole is made of standard 4” galvanized pipe. Fix the directional antenna on the upper end of the splicing pole with the self-carried anchor ears. The top of the directional antenna is lower than that of the splicing pole by 50mm.

4 According to the azimuth angle requirement of the engineering design (One antenna should be placed at 0°, 120° and 240° respectively), accurately set the direction of each antenna, with the error in the range of ±5°. Adjust the self-carried anchor ears of the directional antenna to set the antenna horizontal (in width), and then tighten the anchor ears in the lower part, as shown in Figure 3-29;

Figure 3-29 Install clamp-supported rack

5 Adjust the downward dip angle of the antenna to 8° through the dip angle adjusting gears on the upper anchor ears, and then tighten the anchor ears, as shown in Figure 3-30.



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Figure 3-30 Install directional antenna on the splicing pole

3.2.2.2 Install Directional Antenna on the Iron Tower 1 Record the data of the antenna, connect the short feeders between the antenna and the tower top

amplifier to port 1-8, and then complete proper waterproof treatment; 2 Fix the directional antenna’s support racks at the preset height on the longitudinal beam with the

attached clamp board, and fix the antenna on the support racks through the attached anchor ears; 3 According to the azimuth angle requirement of the engineering design (One antenna should be

placed at 0°, 120° and 240° respectively), accurately set the direction of each antenna, with the error in the range of ±5°. Adjust the self-carried anchor ears of the directional antenna to set the antenna horizontal (in width), and then tighten the anchor ears in the lower part.

4 Adjust the downward dip angle of the antenna to the desired degrees through the dip angle adjusting gears on the upper anchor ears, and then tighten the anchor ears;

5 The directional antenna installed on the tower is shown in Figure 3-31 and Figure 3-32.

Figure 3-31 Supported antenna rack



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Figure 3-32 Directional antenna installed on the tower

3.2.2.3 Install Directional Antenna on ‘#’ Tower 1 Fix the 4” splicing pole on the installation arm on the top of the ‘#’ tower with U-type bolts or

anchor ears, and then connect the lightning rod on the top of the splicing pole with bolts; 2 Record the data of the antenna. Connect the short feeders between the antenna and the tower top

amplifier to ports 1-8, and then complete proper waterproof treatment; 3 Fix the directional antenna on the upper end of the splicing pole with attached anchor ears. The

top of the antenna is lower than that of the splicing pole by 50mm, as shown in Figure 3-33;



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Figure 3-33 Directional antenna installed on ‘#’ tower

4 According to the azimuth angle requirement of the engineering design for the three-sector directional antenna (One antenna should be placed at 0°, 120° and 240° respectively), set the direction of each antenna, with the error in the range of ±5°. Adjust the self-carried anchor ears of the directional antenna to set the antenna horizontal (in width), and then tighten the anchor ears in the lower part, as shown in Figure 3-34;

Figure 3-34 Three-sector directional antenna installed on ‘#’ tower

5 Adjust the downward dip angle of antenna to the desired degrees through the dip angle adjusting gears on the upper anchor ears, and then tighten the anchor ears.

3.2.2.4 Install Directional Antenna on Triangular Tower On the triangular tower, the directional antenna can be installed in the same way as on the splicing

pole. According to the azimuth angle requirement of the engineering design (One antenna should be

placed at 0°, 120° and 240° respectively) for directional antenna, accurately set the direction of each



31

antenna, with the error in the range of ±5°. Adjust the self-carried anchor ears of the directional antenna to set the antenna horizontal (in width), and then tighten the anchor ears in the lower part, as shown in Figure 3-35;

Figure 3-35 Directional antenna installed on triangular tower

3.3 Install Tower Top Amplifier (TTA)

3.3.1 Install TTA

3.3.1.1 Install TTA on Splicing Pole 1 Connect the two TTA units and TTA connector through 16 sets of M6*14 stainless steel bolts,

shown in Figure 3-36. (notice : the side with silk-screen is up)

Figure 3-36 TTA connection



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2 Fix one set angle iron used to install TTA and short angle iron on splicing pole, height about 1.2 meter, through 2 M12*150 stainless steel bolts, and tighten it with double nuts. (The direction of angle iron used to install TTA is that of TTA installation.)

3 Fix one set angle iron used to install TTA and short angle iron on splicing pole, height about 0.9 meter, through 2 M12*150 stainless steel bolts, and don’t tighten them, shown in Figure 3-37

Figure 3-37 fixing angle iron installation

4 Connect the ‘L’ connector and Angle iron used to install TTA through M8*30 bolts, (must use flat washer at both ends of bolt). The ‘L’ connector at fastening end (upper end) is placed inside and that at loose end (lower end) is placed outside. It is shown in Figure 3-38.

Figure 3-38 ‘L’ connector installation

5 Put the TTA module shown in Figure 3-36 straight. Hang the upper TTA connector on the ‘L’ connector at fastening end (upper end) and fix them through M10*30 stainless steel bolt.

6 Adjust the position of angle iron at loose end (lower end) to put its the pole position and that of TTA connector at the lower end in one line.



33

7 Tighten the M12*150 bolts shown in Figure 3-37 and the M10*30 bolts. It is shown in Figure 3-39.

Figure 3-39 TTA installed on the splicing pole

3.3.1.2 Install TTA on the Iron Tower (‘#’ Tower) 1 Connect the two TTA units and TTA connector through 16 sets of M6*14 stainless steel bolts,

shown in Figure 3-36. (notice : the side with silk-screen is up) 2 Connect the TTA discreteness and ‘L’ connector through M10*30 bolts, and tighten the bolts. It is

shown in Figure 3-40.

Figure 3-40 ‘L’ connector

3 Connect ‘L’ connector and Angle iron used to install TTA through M8*30 stainless steel bolts and place 4 ‘L’ connectors on one plane. It is shown in Figure 3-41. (notice: must use flat washer at both ends of bolt.)



34

Figure 3-41 Angle iron used to install TTA connection

4 Fix angle iron used to install TTA, chock and short angle iron on plane of the tower through M12*150 stainless steel bolts, and use double nuts to tighten. It is shown in Figure 3-42. (Notice: angle iron used to install TTA lies in above.)

Figure 3-42 Tower top amplifier installed on the iron tower

3.3.2 Connect Cables of TTA

1 Connect the power cables of the TTA to the corresponding power port, and connect the other end of power cable to the terminal labeled as “Tower top amplifier” on the lightning protection box;

2 Connect the 8 switch feeders of the TTA to the output ports of the amplifier, and the opposite ends of the feeders to ports 1-8 of the antenna array. And then connect feeders numbered as 1-8 to the corresponding input ports of the amplifier, as shown in Figure 3-43;

Figure 3-43 Cable connection for TTA



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3 Ground the body of the lightning protection box firmly with grounding cable. For waterproof treatment, make sure to coat silica gel at the grounding point and wrap adhesive tape and insulation tape on the connection properly;

4 Connect the other end of the TTA’s power cable to the corresponding port on the lightning protection box, as shown in Figure 3-44.

Figure 3-44 Connect cables of the lightning protection box

3.4 Install GPS

3.4.1 GPS Structure

Figure 3-45 GPS antenna and installation piece

3.4.2 Installation requirements of GPS

1 The GPS antenna feeder system (satellite synchronizing antenna feeder system) can be installed at the same time with the RF antenna feeder system.

2 The location for GPS antenna installation must be an open environment, No obstacle is allowed in the 45° angles between the antenna and the vertical surface.

3 Keep GPS free from the short-range radiation of the main lobe on the front side of the mobile communication antenna. Do not install it underneath the microwave signal generator of the microwave antenna or under high-voltage cables. Do not expose it to the intense radiation of TV launching tower.

4 For the sake of lightning protection, the GPS should be installed in the middle of the building top. Not to install it in any corner of the building top as possible. The corners are more possible to attract lightning. Close to the antenna, a special lightning rod should be installed, with the antenna



36

in the effective protection range of the special lightning rod. 5 To install the GPS antenna on the tower, make sure to install it close to the equator as much as

possible. If on the northern hemisphere, install it on the south side of the tower. If on the southern hemisphere, install it on the north side.

3.4.3 Installation Procedures of GPS

1 Determine the installation location of GPS based on the engineering survey report and the engineering design report

2 Unpack the GPS box and take out the accessories for installation (including the L-shape angle iron, M8 expansion bolts used to fix the angle iron, M8 bolts used to fix the standard pole and the corresponding washers, and so on). Determine the positions for the angle iron at the installation location of GPS by means of L-shape angle iron, drill holes with a M10 punch drill. The hole should be a little deeper than the expansion sleeve (10-15mm).

3 Connect the GPS antenna and the standard connection tube (360mm). Upon connection, apply the outer thread of the connection tube on the inner thread of the GPS antenna, as shown Figure 3-46；

Figure 3-46 Connection of the GPS antenna and Pole

4 Fix the connection pole of GPS with M8 bolts to the L-type angle iron, as shown in Figure 3-47.

Figure 3-47 Installation of GPS antenna, Pole and L-type angle iron

5 The self-carried feeder of GPS must be wrapped with insulation tape along the self-carried splicing pole, first from top to bottom and then from bottom to top. Make sure to spare some length at the feeder’s lead-out, in case that the feeder might get loose, as shown in Figure 3-48.



37

Figure 3-48 Wrapping GPS process with insulation tape

6 15cm of the GPS feeder should be wrapped with insulation tape, as shown in Figure 3-49.

Figure 3-49 Wrapped GPS feeder with insulation tape

7 And then secure the GPS feeder and self-carried splicing pole respectively underneath the lower part of the insulation tape and above the first mounting bolt with black cable ties, as shown in Figure 3-50.

Figure 3-50 Secured GPS feeder with cable ties

3.4.4 Layout and Connection of GPS Feeders

1 The GPS feeders should be cabled and fixed with feeder clamps along the cable ladder together with the RF feeders.

2 Make sure that fix the points with clamps not meeting with the RF feeders. Never bundle them along the lightning arresting belt;

3 Upon the entrance of the GPS feeders into the equipment room, make sure to fabricate a backwater elbow;

4 Plug the GPS feeders end with BNC connector to the GPS sockets on the NBP board of the BTS.

3.5 Install Feeder Cables

3.5.1 Connect Feeder Cables

1 Connect switch feeders No.1-8 and feeders No.1-8 to the corresponding port of TTA according to their number, for example, feeder No.1 connects to one input port of TTA, the corresponding output port connects to antenna array No.1 port via No.1 switch feeder, the connection of the feeder head is as follows: aim feeder and feeder head vertically (or horizontally) at feeder connector socket, screw feeder head with one hand in the direction of locking connector, if blocking happened in the process, make sure no to screw it forcingly, and shake lower feeder in



38

the connector with the other hand until connector is all right and firmly, if necessary, feeder head can be tightened with steel plier again.

2 Connect 9 feeders to the terminal of lightning protection filter on the cabinet according to their number, make sure that connection is all right and firmly.

3 Connect switch feeders No.1-8 to the corresponding feeder connector socket of the antenna array according to their number.

4 Tighten the RF connector of the feeder, and identify them in label finally. Make sure to complete proper waterproof treatment.

3.5.2 Grounding Feeder Cables

1 Select the right grounding point for the feeders. They must be grounding before being led into the equipment room.

2 Ground the two power cables 1 meter to the input port of the tower top amplifier with grounding clamps. Between tower top and tower bottom, the feeders should be grounded every 30 meters, while on the building surface, they should be grounded every 25 meters. The grounding wires should be connected to the grounding bus bar along with the downstream direction of the feeders, with the grounding resistance no greater than 5ohm. At the grounding points, make sure to coat silicon gel or grease for anti-oxidation. It is forbidden to bundle feeders along with the lightening protection belt of the building;

3 The grounding bus bar should be connected with multi-core copper wire (with the diameter no less than 25mm2) to the lightning protection net of the building. Make sure not to connect it to the protection ground of the equipment room.

3.5.3 Install Feeder Cables

1 Clamp the feeder, power cables and GPS cable into the feeder clamps and secure the clamps, and then fix the feeder clamps in the cable ladder. The interval of the feeder clamps should be kept as 1200mm. Bundle up feeder and power cables with black cable ties between clamps. Both feeder and power cables should be distributed evenly and flat, without cross connection;

2 Before leading feeders into the equipment room, make a backwater elbow, with the elbow radius 20 times bigger than the cable diameter. At the entrance to the equipment room, good water tightness must be ensured. After leading them into the equipment room, cable the feeders along the cable ladder and fix them with black cable ties every 400mm.

3 Figure 3-51 shows the structure and installation of a feeder clamp.

Figure 3-51 Feeder clamp structure

4 Installation of 1/2’ feeder in feeder clamp is shown in Figure 3-52.



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Figure 3-52 Installation of 1/2’ feeder

5 Installation of 7D-FB feeder in feeder clamp is shown in Figure 3-53.

Figure 3-53 Installation of 7D-FB feeder

3.5.4 Install Feeder Window

3.5.4.1 Structure Feeder window in common use has 4 holes; its structure is shown in Figure 3-54.

Figure 3-54 Structure of the feeder window

3.5.4.2 Install the feeder window 1 Determine the position for feeder window installation based on the engineering design. Open a



40

hole in the wall for feeder window installation with dimensions of 340*340mm, and install M6 expansion bolts, as shown in Figure 3-55；

Figure 3-55 Open a hole in the wall

2 Secure the feeder window and coat seal gel around the window, as shown in Figure 3-56.

Figure 3-56 Install the feeder window

3 After installing and fixing the feeder window, peel off cover of the sealing mask (use a small knife to cut on the inner side of the mask and then the cover will fall off by itself). Lead feeders No.1-9 through one of the holes. If three BTSs are involved, please use three holes. Pull the installed feeders from outdoor to indoor along the sealing mask.

4 Select a right sealing element supplied as per the specification of the feeder. Open the part with slight force along the cutting of the sealing element and then sleeve it on the feeder.

5 Insert the sealing element into the sealing mask. Make sure to coat sealing gel on the adjacent parts and ensure good fitting between the sealing element and the sealing mask (The shoulder of the sealing element should in full contact with the raised surface of the sealing mask).

6 Finally, sleeve on the collar and tighten it with a screwdriver. For good installation, make sure to use waterproof material on the feeder window for good

tightness.

Chapter 4 Install BS indoors


41


4.1 Install Cabinets

4.1.1 Cabinet Structure

The SCDMA wireless BTS is configured with standard 19’ cabinets. Their outer dimensions are: Height × width × depth = 1569mm × 600mm × 722mm Height × width × depth = 2010mm × 600mm × 722mm Figure 4-1 shows the appearance and accessory of the cabinet：

Figure 4-1 Cabinet structure

Figure 4-2 shows the installation accessory of the cabinet.

Figure 4-2 Accessory of the cabinet



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4.1.2 Position and Install Cabinets

1 Layout of cabinet It is recommended to position two cabinets in a single row as shown in Figure 4-3 as per the

following instructions:：

The spacing between the rear side of the cabinets and the wall should be no less than 600mm; The spacing between the rear side of the cabinets and the wall should be no less than 600mm; In front of the cabinets, at least 600mm spacing should be spared out as walkway.；

Figure 4-3 Cabinet layout

2 Place cabinets based on the engineering design requirements, accurately mark out the positions of the supports on the floor, install the accessories for cabinet installation, mark out the holes for accessories, as shown in Figure 4-4, drill vertical holes with the right punch drill and drill bit, and then install M12 expansion bolts.

Figure 4-4 Installation of cabinet accessories

3 Do not tighten the expansion bolts so that the installation accessories can be moved. Install the cabinet in the preset position, and then rotate the accessories to move the U-shape opening on the corresponding round steel bar of the cabinet support, as show in Figure 4-5.



43

Figure 4-5 Bottom of the cabinet

4 Position the cabinet, adjust its levelness and then tighten the expansion bolts. 5 Check the insulation impedance with a meg-ohmmeter between the cabinet and the floor and make

sure that the value is greater than 5MΩ.

4.2 Install BTS 1 The overall structure of the BTS is shown in Figure 4-6;

Figure 4-6 BTS structure

2 Open the cabinet door, adjust the partition positions, push the BTS into the sub-rack, tighten the bolts, as shown in Figure 4-7.



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Figure 4-7 Install BTS into cabinet

3 Record the data of the BTS and fill the data in the BTS record table. 4 Finally, make sure that any empty slot is filled in with a panel on the BTS.

4.3 Connect E1 Transmission Cable

4.3.1 E1 for BTS and DDF

Figure 4-8 shows the E1 connection for the BTS and the DDF.

Figure 4-8 E1 connection for BTS and DDF

4.3.2 Connect E1

1 On the BTS side is a BNC connector; while on the other side, the connector to be fabricated should match the connector on the DDF of the operator. The structure of the BNC connector is shown in Figure 4-9：



45

Figure 4-9 BNC connector

2 Plug the BNC connector of the E1 into the E1-OUT / E1-IN ports of the BTS unit. The E1-IN on the BTS is connected with the sending end of the DDF; while the E1-OUT on the BTS is connected with the receiving end of the DDF.

3 Bundle up and fix E1 cables along the cable ladder until the DDF sub-rack. The E1 cables should be laid out in a tidy and nice order.

4 Check the resistance with a multi-meter between the wire core and the sleeve. Make sure to get a great value.

4.4 Connect Power Cables

4.4.1 Notice

The power cable described here is the general name of 48V power cable and its grounding cable. It consists of fire retardant 10mm² wires in red, blue and greenish yellow colors. The red is connected to the positive pole of the 48V power supply, namely the working ground; the blue is connected to the negative pole, namely the working pole; while the greenish yellow is connected to the protection ground.

The working ground and the protection ground are not connected to the same ground, but grounded separately. Either of them should be connected to the lightning protection grounding bus bar.

4.4.2 Connect Power Cables

1 For the BTS power cable, two-core aeronautical connector is required, as shown in Figure 4-10.

Figure 4-10 Connector for BTS power cable

2 Underneath the rear of the cabinet is a power distribution board. The air switch has been fixed on the cabinet. All the relevant parts are shown in Figure 4-11.



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Figure 4-11 Power distribution board

3 Connect the power cables to the power distribution board underneath the rear of the cabinet respectively. Plug the aeronautical connector into the power port of the BTS. Connect the lead-in –48V power to the cabinet’s air switch. Complete the connection for the air switch and the power distribution board as shown in Figure 4-12.

Figure 4-12 Connection map of the power

4 Connect the power cables to the connection at the side of electric power distribution cabinet and label the connection as well. Connect the grounding bus bar to grounding cable via connection and tighten it with bolts. The carrier’s staff are required to cooperate on the scene when connect power cable to power distribution cabinet, connecting the cables after having cut designated branch switch. After connection, close the branch switch (make sure to close the air switch firstly), then connect the black pen of the multi-meter with voltage grade to air switch –48V end and the red pen to air switch working ground, if measurement value shows 48 (±5) V, connection is correct. And then close designated branch switch.

5 Do not bundle power cables with other cables. They must be cabled separately.



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4.5 Cabling Requirement in Equipment Room 1 In the equipment room, transmission cables on the cable ladder should be cabled separately from

power cables and grounding wires, without any cross connection. The cabling should be done in a tidy and nice order. Excessive cables should be bundled up with cable ties and then placed on the cable ladder in the equipment room. Attached white cable ties should be used in an internal less than 400mm. The RF feeders between the cable ladder and the RF feeder, any elbow should be kept smooth without cross connection. The elbow angle should be ≥90º;

2 Some cables, such as the GPS cable from the cable ladder to the cabinet, power cables of tower top amplifiers, E1s, power cables of the BTS and the cabinet’s grounding wires, should be vertically led into the cabinet’s cabling holes from the cable ladder;

3 Both ends of each E1 should be labeled clearly. Make sure to check the connectors with the multi-meter prior to connection to ensure good contact;

4 Both ends of the ground wire should be connected with specific connectors (copper lug). After checking the connectors, wrap the connection between the grounding wire and the connector with insulation tape. On the grounding wire provided upon delivery, no connection is allowed in the middle. Both ends should be tightened with bolts;

5 On the power cables configured along with delivery, no connection is allowed in the middle. After connection, label the power cables clearly close to the switch. Close the branch switch on the power distribution cabinet to check the power to be connected to the BTS. If the power is correct, switch it off and connect it to the BTS.

Chapter 5 Fabricate Cables


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5.1 Fabricate RF Feeders

5.1.1 Fabricate 1/2” RF Feeder Cables

1 Prepare a HCAAY-50-12(1/2’) feeder cable to the desired length based on the site survey report; 2 Cut the feeder sleeve transversely (33mm to the feeder end) with a ring cutter, then cut it along the

core, (do not cut the shielding layer), and finally peel off the sleeve, as shown in Figure 5-1.

Figure 5-1 Peel the sleeve

3 Cut the shielding layer (16mm to the feeder end) with the ring cutter, as shown in Figure 5-2.

Figure 5-2 Peel the shielding layer

4 Cut the insulation layer under the 16mm shielding layer with the ring cutter (Do not cut the cores), as shown in Figure 5-3.

Figure 5-3 Peel the insulation layer

5 Remove the RF connector N-J534B, and screw nut, sealing ring 2 and cable clamp onto the feeder in sequence, among which 2 cable clamps belong to one set and then wrap the parts with a rubber ring, as shown in Figure 5-4.

Figure 5-4 RF connector



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6 Trim the cross section of the core with a file and then insert the core into the pinhole of the RF connector shell (attached with a sealing ring 1), and then screw the nut onto the shell: Hold one end of the nut with a spanner and turn the shell as shown in Figure 5-5.

Figure 5-5 Connection of RF connector

7 Follow the same way to fabricate the other end of the feeder. If possible. Check if the loss and Standing Wave Ratio (SWR) of the cable with a SWR meter (Site master S331C) are within the required range, and recording all relevant data.

5.1.2 Fabricate 7D-FB RF Feeder Cables

1 Prepare a 7D-FB feeder cable to the desired length based on the site survey report; 2 Cut the feeder sleeve transversely (16mm to the feeder end) with a ring cutter, then cut it along the

core, (do not cut the shielding layer), and finally peel off the sleeve, as shown in Figure 5-6.


3 Cut the shielding layer (8mm to the feeder end) with the ring cutter, as shown in Figure 5-7;

Figure 5-7 Peel the shielding layer

4 Cut the insulation layer (8mm to the feeder end) with the ring cutter (Do not cut the cores), as shown in Figure 5-8.


5 Dismantle the RF connector N-J631, put the cable sleeve and cable clamp on the feeder in sequence; Align the inner shoulder of the cable clamp with the ring-cut surface of the feeder



51

sleeve; Unfold the shielding layer and apply it evenly on the pyramidal face of the cable clamp; Tighten the cable clamp with nipple pliers on the feeder and then cut off the excessive shielding layer with angle pliers outside the bigger end of the pyramidal face along the cable clamp.

Figure 5-9 RF connector

6 Put the liner bushing between the feeder’s insulation layer and shielding layer and then tightly press the shielding layer. Ring cut the insulation layer along the liner bushing to the left. Make sure not to cut the inner conductor.

7 Insert the core into the small hole of the connector and then put the nut on the bolt: hold the bolt with a spanner and tighten the nut.

8 Fabricate the other end of the feeder in the same way.

5.2 Fabricate Power Cables for TTA 1 Prepare a 6-core shielded cable to the desired length. Cut the cable sleeve on one end transversely

with a ring cutter (the length should be right for the crimping clamp of the aeronautical connector to cover the cable sleeve), then cut the sleeve along the core (without damaging the cores) and finally peel off the sleeve and the shielding layer, as shown in Figure 5-10.

Figure 5-10 Peel the sleeve and shielding layer

2 Peel off the insulation rubber skin of the cores (4.4mm), heat tin with an iron to coat the cores firmly and properly (make sure that there is no loose weld), and then sleeve a Φ3 heat-shrinking tube on the tin-coated section. that there is no loose weld), and then sleeve a Φ3 heat-shrinking tube on the tin-coated section, as shown in Figure 5-11.


3 Dismantle the aeronautical connector Y2M-7TK, unscrew the crimping clamp and sleeve it on the cable, and then coat the pin-outs of the 7-core aeronautical connector with tin.

4 Follow the instructions in Table 4, weld the pin-outs of the aeronautical connector to the 6 cores respectively and sleeve on the heat-shrink tube. When tightening the aeronautical connector, hold the end face. Tighten the bolt and crimp the cable sleeve, as shown in Figure 5-12.



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Figure 5-12 Power cable connection of TTA

5 Figure 5-13 shows the fabrication and connection of power cables and the aeronautical connectors.

Figure 5-13 Power cable connection mapping of TTA

6 After fabricating the power cables, label both ends for consistency. For tower top amplifiers, 6-core shielded power cables are required. The cores are identified with

different colors as black, white, red, yellow, blue and green respectively. Both ends are an aeronautical connector with the model No. as Y2M-7TK. The connection of both power cables and aeronautical connectors matches the requirements of Table 5-1.

Table 5-1 Connection instructions for power cables and aeronautical connectors

Colors of 6-core power cables for TTA

7-core aeronautical connector

Meaning

Black 1

White 2 48V-

Red 3

Yellow 5 48V+

Blue 6 Negative end for synchronization signal

Green 7 Positive end for synchronization signal



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5.3 Fabricate E1 1 Prepare an E1 coaxial cable to the desired length according to ‘Site Project Design’ file; 2 On one end of the coaxial cable, peel off 20mm of protection sleeve off the cable with crimping

pliers. Make sure not to damage the shielding layer, as shown in Figure 5-14.

Figure 5-14 Peel off sleeve

3 On this end, peel off shielding layer 4~5mm to the end, as shown in Figure 5-15.

Figure 5-15 Peel off shielding layer

4 On the same end, peel off the translucent insulation layer 4~5mm to the end, make sure not to damage the core, as shown in Figure 5-16.

Figure 5-16 Peel off insulation layer

5 Sleeve the heat-shrinking tube and metal tube supplied with the BNC connector onto the coaxial cable in sequence, as shown in Figure 5-17.

Figure 5-17 BNC connector

6 Insert the coaxial core into the small hole of the BNC connector’s central pin until the translucent insulation layer gets good contact with the pin. And then weld the core with iron inside the small hole of the central pin firmly and reliably, without dry weld or short connection, as shown in Figure 5-18.

Figure 5-18 Install BNC connector

7 Open the metal net shielding layer of the coaxial cable so that shielding layer can evenly wrap the net head of the BNC connector. Push up the metal tube and tighten its lower end with crimp pliers, so that shielding layer can tightly hold the net head of the BNC connector. And then push up the heat-shrinking tube and heat it with a hot blower to shrink the tube to ensure good protection and water resistance.



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5.4 Fabricate Grounding Cables for Feeders

5.4.1 Fabricate Grounding Cable for ½’ Feeders

1 Ring cut the feeder at the grounding point of the feeder, and then cut the feeder again (40mm to the first cut). Cut the cable along the axle direction to peel off the insulation sleeve, as shown in Figure 5-19. Make sure not to damage the shielding layer.


2 Open the grounding clamp. Sleeve the bolt-attached part on the shielding layer peeled from the feeder, and then tighten the grounding clamp with bolts, as shown in Figure 5-20.

Figure 5-20 1/2’ feeder grounding clamp

5.4.2 Fabricate Grounding Cable for 7D-FB Feeder

1 Use the RF connector of 7D-FB to connect a male connector and a female connector. Cut the cable at the grounding point so that the male and female connectors are connected to the cut section respectively. The RF connector can be fabricated in the method as described above.

Figure 5-21 Coadjacent RF connectors

2 Open the grounding clamp. Wrap the RF connector with the nut-attached part as shown in Figure 5-21, and then tighten the grounding clamp and ground cable with screws, as shown in Figure 5-22.

Figure 5-22 7D feeder grounding clamp



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5.5 Fabricate Ground Cable of Power Cable for TTA 1 Ring cut the feeder at the grounding point of the TTA power cable, and then cut the feeder again

(40mm to the first cut). Cut the cable along the axle direction to peel off the insulation sleeve, as shown in Figure 5-23, Make sure not to damage the shielding layer.

Figure 5-23 Peel the skin of TTA power cable

2 Open the grounding clamp. Sleeve the bolt-attached part on the shielding layer peeled from the feeder, and then tighten the grounding clamp with bolts, as shown in Figure 5-24.

Figure 5-24 TTA Power cable grounding clamp

Appendix A Continuity Test for Antenna Feeder and Power Cables


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A.1 Continuity Test for Feeders 1 Check the RF connectors on both ends of the feeder with a multi-meter. Conduction should be

established between core pins and between the shells. 2 Measure the resistance with a multi-meter between RF connector pins and the shell on either end

of the feeder. High resistance value is expected.

A.2 Continuity Test for TTA’s Power Cable 1 Open-circuit measurement methods for double ends and the specific requirements: Follow the

instructions in Table A-1 to measure the resistance between the shell and individual pin-outs. If high resistance is obtained, the continuity test is acceptable.

Table A-1 Open-circuit measurement record for cable ends (Unit Ohm)

Shell 1 2 3 5 6 7

Shell

1

2

3

5

6

7

2 Short-circuit measurement methods for single end and the specific requirements: Follow the instructions in Table A-2, short connect the corresponding pin-outs and check the corresponding pin-outs with a multi-meter on the other end to see if they are conducted. If all of them are conducted, the test is successful.

Table A-2 Short-circuit measurement record for single end (Unit: Ohm)

Measured pin-out pairs 1-2 4-5 6-7 4-6 5-7

Measurement result

3 Measurement methods and specific requirements for the case that tower top amplifier are connected with a single end: After the tower top amplifier are connected with power cable and before power-on, follow the instructions described in Table A -3 to measure the resistance between pin-outs and the shell in sequence with a multi-meter. The measurement results should meet the requirements in the table.



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Table A -3 Single-end measurement record after amplifiers being connected with cable

(Unit: Ohm)

Measured pin-out pairs

1-2 4-5 4-6 5-7 1-3 1 - shell 6 - shell 7 - shell

Standard requirement

<5 <5 700+/-100 700+/-100 High resistance

High resistance

High resistance

High resistance

Result

Appendix B Cable Labels and Bundling Specifications


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B.1 Label Specifications 1 A label is an identity flag used after on-site installation for subsequent maintenance. Labels can be

divided for two types of cables: power cable and signal cable. Signal cables include power cable, network cable, trunk cable and antenna feeder; Power cables include DC power cable and AC power cable. Labels are used to ensure the tidiness and correctness upon installation and for the convenience in subsequent maintenance.

2 To stick labels on cables, make sure to determine the right positions. The default position is 100mm to the plug except some special cases. For example: Labels should not be stuck on the elbow or other positions affecting cable installation.

3 Upon vertical cabling, labels should face the front. Upon horizontal cabling, the labels should face upward, as shown in Figure B-1.

Figure B-1 Cable indentifier

4 Labels for power cables and E1 cables bear the location information of the corresponding opposite ends. Namely, you only need to fill in the location information of the peer equipment or plugs of the label side, as shown in Figure B-2.

Figure B-2 Stickup location of label

5 Upon filling in labels and sticking them, make sure to keep the label surface clean. They should be stuck in a tidy and nice order. Improper label location or direction will seriously deface the appearance of products, as shown in Figure B-3.



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Figure B-3 Stickup demonstration of cable label

B.2 Cable Bundling and Distribution Specifications 1 If two-layered cable ladders are used, the upper layer is generally used for power cables while the

lower layer is used for transmission cables and data cables. If only one layer of cable ladders are used, transmission cable / data cable and power cables are laid along the sides respectively without cross connection, inside the cabinet, each kind of cable (power cable and signal cable) should be distributed separately, as shown in Figure B-4.

Figure B-4 Cable distribution

2 Power cables are laid out and bundled in the sequence of red, blue and yellowish green in one row. They are secured every 400mm on the cable ladder. The red is for the working ground, the blue is for –48V power supply; while the yellowish green is for the protection ground. On the DC power distribution cabinet end in the equipment room, cold-end terminals should be used to connect power cables and be properly labeled. On the grounding bus bar end in the equipment room,



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cold-end terminals should also be used to connect the grounding wires and be fixed with bolts. 3 Pile every three feeders into a V-shape, bundle them up and secure them with cable ties every

400mm. Cut off the excessive part of each cable tie without leaving any sharp end, as shown in Figure B-5, Both ends of each feeder should be labeled properly. If there is any connection on the feeder, make sure to fix the connection properly before starting cabling in sequence to prevent damaging the connection during cabling. When cutting cables on the site, make sure to spare out sufficient length on each cable, as shown in Figure B-5.

Figure B-5 Bundle cables with cable ties

4 The elbow from the cable ladder to the cabinet must be kept smooth without cross connection. Bundle cables in the case of elbow as shown in Figure B-6 to prevent breaking cable cores due to excessive stress at the elbow. Lead cables vertically through the cabling holes on the cabinet. Inside the cabinet, cabling must be done in a tidy and nice order, as shown in Figure B-6.

Figure B-6 Cabling upon elbow

5 Inside the equipment room, make sure to use the white cable ties configured along delivery. If some cables have been tied up by other suppliers on the cable ladder, please use it as reference. For outdoor feeders, make sure to use the black cable ties configured along delivery to tie up the power cables.

Appendix C Grounding and Waterproof Treatment


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C.1 Grounding Processes 1 If a reliable lightning protection belt is available on the top of the building accommodating the

BTS, the current lightning protection grounding device should be used for the such equipment as pole, tower, lightning rod, shell body of tower top amplifier, outdoor cable ladders and feeders.

2 If a reliable protection grounding bus bar is available in the equipment room of the BTS, it should be used as the protection ground for all related equipment such as BTS, cabinets, lightning protection box and indoor cable ladders.

3 For the protection ground and lightning protection ground, the grounding resistance should be less than 5ohm. For outdoors cable ladders, poles and lightning rods, equipotential grounding should be considered. At outdoor grounding points, make sure to apply anti-oxidation material for anti-oxidation treatment, as shown in Figure C-1.

Figure C-1 Ground cable connection

4 If no lightning protection belt is available around the building top, make sure to set a special lead along the external wall until the grounding bus of the building. Do not lead it to the grounding bus bar of the equipment room.

5 Cable ladders can be divided into indoor cable ladders and outdoor cable ladders. They should be installed prior to BTS installation. Indoor cable ladders should be connected to the indoor grounding bus bar with yellowish green cable whose cross-sectional area is no less than 16mm². The grounding connector for grounding cables should be a cold-end terminal matching the required model. (Normally called as copper lug) for grounding. Outdoor cable ladders should be welded to the building’s lightning protection belt through flat iron bar, together with other equipment such as antenna pole, tower, feeders, lightning rod, and so on. Indoor cable ladders should be separate from outdoor cable ladders, without interconnection.

6 There is a grounding connector in TTA unit. It should be connected to the building’s lightning protection grounding bus with a yellowish green cable whose cross-sectional area is no less than 16mm². This grounding connector should be grounded through a cold-end grounding terminal (normally called as copper lug) matching the required model.

7 Before grounding, make sure to clear the grease or oxidized substances at the grounding point. The grounding area of the welded point should be as big as possible. If conductive wire is required for a grounding point, the cold-end terminal should match the model No. of the wire to ensure good grounding performance. Make sure that the grounding resistance of the grounding point should be up to the requirements.



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C.2 Waterproof Treatment Processes 1 Two type of adhesive tape are available for waterproof treatment of outdoor connectors: insulation

adhesive tape and self-adhesive tape; 2 First clear the dust or grease from the feeder’s connector or the feeder’s grounding clamp; 3 Unfold the waterproof self-adhesive tape, remove the lead tape, and stick one end of the tape on

the connector or on the feeder 20~50mm below the grounding clamp; 4 Evenly stretch the tape so as to get ¾ of the original width (The width after stretching should be

no less than ½ of the original width; otherwise the molecular structure of the tape will be damaged and the tape’s reliability will be undermined). Wind the tape repeatedly by stretching it from top to bottom. Each top layer should overlap ½ of its inner layer.

5 When the tape goes to the connector or 20~50mm above the grounding clamp, wind it in the same way from bottom to top. Two layers of self-adhesive tape should be required to achieve the waterproof purpose.

6 After wrapping the waterproof self-adhesive tape on the connection, make sure to squeeze it by hand to minimize the air gap between layers and get full adhesion. Besides, insulation tape is also required outside the self-adhesive tape to prevent wear and aging.

7 Wind the insulation tape in the similar way for the waterproof self-adhesive tape in the overlap mode. The overlap rate is about ½. Wrap the tape from top to bottom and then from bottom to top for two cycles. During winding, make sure to keep a proper stretching ratio.

8 Finally, coat proper silicon gel evenly on all parts wrapped with tape to achieve the waterproof purpose, as shown in Figure C-2.

Figure C-2 Waterproof treatment

Documents

SWAN1800V BS Engineering Installation Manual V1.01