Huawei iSiteC BTS3601C Installation Manual page 44

Installation Manual
iSiteC BTS3601C CDMA Base Station
Attention:
1) GPS antenna-side lightning arrester
The "PROTECTED" end of the GPS lightning arrester should face the antenna.
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That is, the "PROTECTED" end of the arrester is connected with the jumper end.
The lightning arrester should not be grounded when it is installed either on the
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tower or on building-top, but the feeder grounding clip should be as close as
possible to the lightning arrester.
The lightning arrester is installed inside the lightning arrester box, with its
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connectors sealed with waterproof adhesive tape and PVC tape in sequence, so
as to prevent moisture invasion.
2) GPS equipment-side lightning arrester
The "PROTECTED" end of GPS lightning arrester should face the BTS. That is,
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the "PROTECTED" end of the arrester is connected with the GPS port of the BTS.
In the case of BTS indoor installation, dual-male conversion connector should be
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used to connect the lightning arrester directly to the GPS port of MBPM. It is
unnecessary to connect the lightning arrester to lightning protection grounding
cable.
In the case of BTS outdoor installation, dual-male-connector jumper of 0.3m long
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should be used to connect the lightning arrester to the GPS port of MBPM. The
arrester should then be connected to the lightning protection grounding cable that
leads to the grounding bar of the BTS. The connector between the arrester and the
feeder should be sealed with waterproof adhesive tape and PVC tape in sequence,
so as to prevent moisture invasion.
II. Type DGXZ+6NFNM-A lightning arrester
Figure 4-10 illustrates the appearance of Type DGXZ+6NFNM-A lightning arrester.
Figure 4-10 Appearance of Type DGXZ+6NFNM-A lightning arrester
Attention:
4 Installing Satellite Synchronization Antenna and Feeder System
4-10
Hardware Installation