Installation Instructions

RGPS Cabling for Multi–BTS Configurations – continued

DEC 2000

4-35

SCt300 BTS Hardware Installation, ATP and FRU Procedures

PRELIMINARY

Cable Connections

For a full signal description of the Site I/O cable, refer to NO TAG in the

“Site I/O, Span Line, RGPS and Modem Cabling” procedure.

The pin number and wire color are based on the Site I/O

cable. The pin number corresponds to pins on the Site I/O

junction box connectors.

NOTE

Table 4-30: Multi–BTS Cable Run List

Sync Reverse – From BTS N Interconnecting

Cable

Sync Forward – To BTS N+1

Color Signal RGPS Cable

Color

Color Signal

Black/Purple Data to Tail– Green/Black Brown/Grey Data from Head–

Black/Grey Data to Tail+ Green Brown/White Data from Head+

Black/White Data from Tail– White/Black Red/Black Data to Head–

Brown/Black Data from Tail+ White Red/Brown Data to Head+

Brown/Red 1 PPS to Tail– Brown/Black Red/Orange 1 PPS from Head–

Brown/Orange 1 PPS to Tail+ Brown Red/Yellow 1 PPS from Head+

Brown/Yellow 1 PPS from Tail– Red/Black Red/Green 1 PPS to Head–

Brown/Green 1 PPS from Tail+ Red Red/Blue 1 PPS to Head+

Black/Blue Ground* Blue/Black Black/Blue Ground*

*The Multi–BTS Synchronization interface must also be referenced to the BTS digital ground through a 7.5K

ohm, 1W resistor. This resistor should be physically located at the punch block or terminal strip at each Sync

Reverse connection in series with the Black/Blue Ground wire.