ZTE Corporation ZXMBW-RA25 Manuale Utente

 

 

Chapter 7 Hardware Installation Check 

 

Confidential and Proprietary Information of ZTE CORPORATION      73 

„ 

If a tower is above 60 m and needs a longer feeder, 
another feeder grounding clip  must be placed in the 
middle of the tower.  

„ 

If a feeder is routed for above 20 m at the building top or 
on the cabling rack after leaving the tower before it 
enters the room, another grounding clip for lightning 
protection  must be added at  the building top or on the 
cable rack.  

 

When you install the grounding clip,  must pay attention to 

water prevention. The end with the grounding cable must face upward 

to prevent the rainwater from flowing to the feeder along the grounding 

cable.  

 

n 

The terminals of the grounding clip of a feeder must be fixed 
on the steel plate of a nearby tower.  

n 

For a building without a tower, the antenna feeder at the top 
must be grounded by connection to the nearby lightning 
protection ground grid on the roof.  

n 

The grounding cable of a feeder must be led up down, and 
the angle between the feeder and grounding cable must be 
no more than 15

º

.  

n 

The minimum bending radius of feeders must be 20 times of 
the radius of feeder cables. The bending radius of the 
primary feeder must be more than 0.3 m.  

n 

There must be no bare copper sheet at each feeder 
connector. Same labels must be attached to both ends of 
each feeder to ensure it can be connected correctly to the 
antenna, and each label must indicate the length of the cable.