RGPS Cabling for Multi–BTS Configurations
– continued
DEC 2000
4-35
SC
t
300 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.
4
