User's Manual Part 1

Span Line, RGPS, and RF–GPS Cabling – continued
PRELIMINARY
1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
MAY 2004
4-70
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Cable Drain
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Cable Drain
+40V
DC
Lines +17V
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DC
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+17V
DC
Equipment+17V
DC
Equipment+40V
DC
Equipment
C1 (RGPS)
TO BTS
UNIT
C (RGPS)
TO RGPS
RECEIVER
EARTH GROUND
MOUNTING PLATE
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Figure 4-46: RGPS Lightning Arrestor Wiring
Connecting the RF–GPS Cable
Figure 4-47 shows the components of the RF–GPS. The RF–GPS is
connected to the BTS via the RF–GPS module through the RGPS
connector on the CBIO Board. See Figure 4-48.
Procedure
Use the procedure in Table 4-37 to install the RF–GPS system.
Table 4-37: Procedure for Installing RF–GPS Antenna and Cabling
Step Action
1 Determine the mounting location (see RF–GPS Mounting Considerations, Table 3-8).
2 Install the mounting kit at the RF–GPS location of choice. Use the appropriate mounting bolts for
mounting surface.
3
n WARNING
The roof structure on which the mounting pole is attached should be verified by a qualified structural
engineer for the weight of the RF–GPS engine and mounting hardware or under adverse conditions for
the installation area
Mounting the RF–GPS antenna and hardware to an inadequate roof surface and/or using inadequate
installation methods can result in serious injury.
4 Attach the RF–GPS head assembly to the post mounting assembly and secure the assembly to the
assembly to the mounting kit using the screws and nuts supplied (see Figure 4-47).
4