ZXC10 BTSB (V1.0) cdma2000 Base Transceiver Station Installation Manual
6-4
6.2.2.1 Grounding Principles of the Main Feeders
1. Usually, each main feeder should be grounded with grounding clips at least at
three positions: on the tower platform, at the place where the main feeder leaves
the tower for the outdoor cabling rack, and before the cable enters the equipment
room. When the main feeder is over 60m, grounding clips should be added in
the middle of it. Generally, a grounding clip is installed every 20m on the feeder.
2. The antenna feeder system, antenna support and new cabling rack installed on
the roof top should be welded to the lightning protection grid of the building.
The feeder should also be grounded at three positions: where it leaves the
antenna pole, where it leaves the roof top, and where it enters the equipment
room.
3. When the main feeder enters the equipment room from the roof top along the
wall, the outdoor cabling ladder provided by the network operator must be
grounded. If not, urge the network operator to finish it as soon as possible.
6.2.2.2 Installing the Grounding Clip
1. Prepare the tools: Paper cutter, flathead screwdrivers, wrench and sharp-nose
pliers.
2. Select a proper installation position for the grounding clip. Cut open the sheath
of the 7/8" feeder to the size of the grounding clip. The structure of the
grounding clip is shown in Fig. 6.2-2.
Grounding
terminal
Grounding cable
Feeder
Locking spring plate of
the grounding cable
External copper
core of the feeder
Copper sheet of the
grounding cable
Fig. 6.2-2 Structure of the Grounding Clip
Summary of Contents for ZXC10 BTSB I1
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Page 22: ... ii Table C 2 1 BTSB Board Indicators C 2 ...
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Page 91: ...Chapter 7 Cable Installation in Cabinet 7 15 Fig 7 3 5 RF Cable Interface in RFS ...
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Page 157: ...Chapter 12 Board Installation 12 11 Fig 12 5 1 Positions of Boards ...
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