User's Manual Part 1

Span Line, RGPS, and RF–GPS Cabling – continued
MAY 2004
4-67
1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
PRELIMINARY
Table 4-35: Pinout for Cables C and C1
Cable C Cable C1Wire Color
Pin PinSignal
6 No Connect Red No Connect
12 PPS Timing (–) Brown–Black 10
11 PPS Timing (+) Brown 2
Wire colors are the same for both cables.
Procedure to Install the RGPS
Head
The RGPS is connected to the BTS via the RGPS connector on the
CBIO Board. See Figure 4-41.
Site specific characteristics determine the GPS cabling that is installed.
Install each cable by referring to the cabling diagram in Figure 4-41, and
the procedure in Table 4-36. The lightning arrestor connections are
shown in Figure 4-46.
Figure 4-43 and Figure 4-44 show the RGPS head. Be sure to factor in
mounting considerations as described in Chapter 3.
The RGPS head must not make contact with any metal
surface other than the provided hardware. Use only the
equipment provided to mount the RGPS head. Failure to
do so could damage the RGPS head.
CAUTION
Table 4-36: Procedure for Installing the RGPS Head and Cabling
Step Action
1 Determine the mounting location.
2
n WARNING
The structure of the wall should be verified by a qualified structural engineer.
Mounting the RGPS head and hardware to an inadequate wall structure and/or using inadequate
installment methods can result in serious personal injury.
Use the appropriate mounting bolts for the mounting surface and install the two wall mounting
brackets. Refer to Figure 4-43.
3 Remove RF–GPS cover plate from CBIO Board.
Remove protective connector cover.
4 Connect cables C and C1 into the punch block, as if they were part of the same cable, cut in the
middle maintaining color code and signal integrity. Connect the same corresponding color on both
sides of the punchblock (see Figure 4-41 and Table 4-35).
4