Nortel DMS 100 Series Maintenance Manual page 28

2-12 Maintenance overview
Feed combining
combine. If one of the feeds is not present, the other feed supplies power.
Fuse fail alarm
failure.
Signaling
circuit card. The connectors are the P1 input, P2 input and J1 output
connectors. The following three tables show the pin-outs.
The following table shows the pin-outs of the P1 input (battery A) connector.
Table 2-8 Power input (P1) connector
Connector
number
P1/A, B
P1/C, D
The following table shows the pin-outs of the P2 input (battery B) connector.
Table 2-9 Power input (P2) connector
Connector
number
P2 /A, B
P2 /C, D
The following table shows the pin-outs of the J1 output (18-pin) connector.
Table 2-10 18-pin output (J1) connector
Pin number
1-9
18
10-17
297-8223-550 Standard 04.02 November 2000
Feeds A and B provide redundancy if the feeds
The system provides an alarm indication in case of a fuse
Three connectors are present on the rear of the NTRX54BA
Signal
L - (A)
L + (A)
Signal
L - (B)
L + (B)
Signal
L - (FAN1)
FAIL
L + (FAN)
Function Description
Input -48 Vdc
Input BAT RTN
Function Description
Input -48 Vdc
Input BAT RTN
Function Description
Output -48 Vdc
Output O/C - > BR through 3.Ok
and LED on output
failure causes Frame
Fail to alarm module
Output BAT RTN from fans