Installing Gps Feeder; Routing Feeder - Huawei iSiteC BTS3601C Installation Manual

Installation Manual
iSiteC BTS3601C CDMA Base Station
3) Tighten the antenna connector and the cable socket. Finally reinstall the unfixed
bolt. Thus the GPS antenna is fixed on the ellipse holder of the antenna support.
Caution:
1) Waterproof treatment should be performed at the antenna connector. Please refer to Section 2.3.6 for
waterproof treatment process.
2) Upon completion of installation, cover the antenna support with anti-rust paint, especially the fastening
bolts, expansion bolts and the places around the bolt holes.

4.3 Installing GPS Feeder

GPS feeder installation includes the installation of jumpers, antenna-side lightning
arrester, feeder, equipment-side lightning arrester, etc. The intallation and routing of
GPS feeder is similar to that of RF feeder. Following gives explanation of points for
attention and grounding requirements during the installation.

4.3.1 Routing Feeder

Prior to feeder routing, carefully check the routing environment including the tower and
building-top. Determine the routing scheme and sequence as per the engineering
drawing.
In the case of BTS indoor installation, the route leading the feeder from the
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installation position to the equipment room containing the cabinet and equipment
should be clear. It should facilitate fixing the cable properly and meet the routing
requirements in the equipment room. In addition, reliable measures should be
taken to protect the feeder from rain and corrosion.
1.5m jumper should be bound at the outside of the antenna support lever evenly
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with cable ties. In addition all cable ties should be fastened, with the same spacing
of 200mm. The cable tie heads should be toward the same direction, and all the
ties should be cut neatly to the end.
Waterproof elbow should be made at the entrance where the feeder enters the
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equipment room. The vertical distance from the lowest point of the waterproof
elbow to the entrance should not be less than 200mm so as to prevent rain from
entering the room.
In the case of GPS antenna installed on building-top, connectors at both ends of
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the feeder should be protected with strong materials (such as packing bags for
board) to prevent damage to the connectors. The feeder should be fixed with
plastic clips attached with steel nails along the root of the parapet on the
4 Installing Satellite Synchronization Antenna and Feeder System
4-8
Hardware Installation