User Manual

Span Lines – Interface and Isolation – continued

08/15/2000

3-9

SC 4812ETL BTS Optimization/ATP

PRELIMINARY

Table 3-1: Pin–Out for 50 Pin Punch Block

Site Component

ColorPinSignal Name

GPS_POWER_1+ 42T Blue

GPS_POWER_1– 42R Bk/Blue

GPS_POWER_2+ 43T Yellow

GPS_POWER_2– 43R Bk/Yellow

GPS_RX+ 44T White

RGPS

GPS_RX– 44R White

RGPS

GPS_TX+ 45T Green

GPS_TX– 45R Green

Signal Ground (TDR+) 46T Red

Master Frame (TDR–) 46R Bk/Red

GPS_lpps+ 47T Brown

GPS_lpps– 47R Bk/Brn

Phone Line

Telco_Modem_T 48T

one

Telco_Modem_R 48R

Chasis Ground 49T

Miscellaneo s

Reserved 49R

sce

aneous

Reserved 50T

Reserved 50R

T1/E1 Span Isolation

Table 3-2 describes the action required for span isolation.

Table 3-2: T1/E1 Span Isolation

Step Action

1 Have the OMC/CBSC disable the BTS and place it OOS.

2 To disable the span lines, use Table 3-1 to locate the pins for the span or spans which must be disabled

and remove the respective surge protector(s).