ZXC10 BTSB (V1.0) cdma2000 Base Transceiver Station Installation Manual
10-26
Installation standards involved in this figure:
1. The radio frequency antenna and GPS antenna must be installed within the 45
°
protection angle for arrester.
2. If necessary, install independent arrester for the GPS antenna.
10.5.2 Testing the Antenna SWR
After installing all the antenna feeders, conduct the SWR test on each of them. The
measured SWR should be less than 1.5 and usually less than 1.3. If this is not satisfied,
check immediately the feeder connectors installed, antenna, feeders and lightning
arresters to find where the problem comes from. For the method of SWR test with
SiteMaster, refer to Appendix G.
10.6 Waterproof Treatment for the Connectors
Caution:
The waterproof sealing for the outdoor jumpers and the feeder grounding clips of the
antenna feeder system is an important part of the antenna feeder installation. It is of
special concern. In the installation process, make sure to use waterproof tapes properly
to ensure the quality of installing the antenna feeder system.
Use 1/2'' jumpers, generally the 3 m finished jumpers, between the antenna and main
feeder for transition. Connect the 1/2'' jumper and the feeder and seal their connectors
as follows:
1. Connect and fasten the antenna jumper and the main feeder connector.
2. Make waterproof treatment on the connectors in the following steps:
1
)
Cut waterproof adhesive tapes about 200 mm long.
2) Wrap the waterproof adhesive tapes from a low position where the connector is
connected and apply them about 200 mm long to fill the low-lying parts of the
connector, as shown in Fig. 10.6-1.
Содержание ZXC10 BTSB I1
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Страница 186: ...ZXC10 BTSB V1 0 cdma2000 Base Transceiver Station Installation Manual B 4 Fig B 6 1 Antenna Feeder DTF Measurement ...