User's Manual

Ground Cabling Installation Chapter 4: Access P oint Hardw are Installation
Ground Cabling Installation
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Objective
This section contains the procedures for installing the ground cable to the Antenna, B CU ,
RGPS , and RF Head.
General Grounding Guidelines
The site should have had an external ground ring or bus bar being used. The ground ring and
bus bar should be an integral part of the structures that will hold the equipment. Reference
Grounding Guidelines for Cellular R adio Installations (Motorola part number 68P81150E62) or
Appendix C of Standards and Guidelines for Communication Sites.
BCU Grounding
The B CU should be tied to a single point grounded to the system master ground. All
interconnect cables should be in metallic sealtight type conduit or solid shield RF cables. It is
recommended that these cables be run in raceways to reduce the loop dimensions of the cable
runs. This minimizes the effect of inducted currents caused by the intense electromagnetic
field of lightning current.
RF Head Grounding
All RF cables should be in metallic sealtight type conduit or solid shield RF cables. It is
recommended that these cables be run in raceways to reduce the loop dimensions of the cable
runs. This minimizes the effect of inducted currents caused by the intense electromagnetic field
of lightning current. A ground lug with captive screws is provided on the RF Head to attach
the ground wire.
DC Power Grounding
The DC power cables from the B CU to the RF Head are routed through conduit. The conduit
is grounded to the master ground.
Antenna Grounding
The antenna is grounded through the RF Head.
4 -20 68P09277A59 -5
Draft OCT 2006