ZXC10 BTSB (V1.0) cdma2000 Base Transceiver Station Installation Manual
13-12
conforms to network planning and two antennas within the same sector goes in
the same direction. The azimuth error of the directional antenna is no more than
±
0.50.
6. Measure the actual mechanical downdip of an antenna with an angulometer. In
case of a unipolarization antenna, each antenna should be measured. An omni
antenna will not be checked and a directional antenna should have the azimuth
error of no more than
±
0.50. The actual mechanical downdip of an antenna
conforms to network planning and two unipolarization antennas have consistent
downdips.
7. The electrically controlled pointer antenna is adjusted with a ejector lever , and
the electrically controlled digital antenna is controlled with key input in the
equipment room. Note that the control line connected with the antenna is
vulnerable. In the case it is broken, it has to be directly adjusted with a spanner
at the antenna terminal. Each of the unipolarization antennas should be
measured. The actual electrically controlled downdip of an antenna conforms to
network planning and two unipolarization antennas should have consistent
downdips. This is not required if it is not an electrically controlled antenna.
8. All antenna poles should be firmly installed and well grounded. All antenna
poles are required to be vertical to the ground and the vertical error should be
less than 20. In particular, all antennas must be vertical to the ground. Check
with a line hammer to keep the vertical error less than 20.
9. The receive/transmit horizontal interval of an omni antenna should be no less
than 3.5 m.
10. An omni antenna should be at least 1.5 m away from the tower while a
directional antenna should be at least 1 m away from the tower.
11. The jacket top of an omni antenna should be level to a support or slightly higher
than the support top.
12. When an omni antenna is installed on a roof, the horizontal interval between the
omni antenna and antenna lightning arrester should be no less than 2.5 m.
13. An omni antenna installed on a roof should avoid blind area.
14. Check the matching relationship of the main diversity antennas within the
sectors and the set top jumpers on the rack.
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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