COMSPHERE 3000 Series Carrier
A-4
December 1994
3000-A2-GA31-80
Table A-5
SDU – NMS Interface
Pin
Circuit
Function
Pin
CC IN
CC OUT
Function
1
RSI
RSO
Request-to-Send
2
CSO
CSI
Clear-to-Send
3
RDO
RDI
Receive Data
4
SG
SG
Signal Ground
5
SDI
SDO
Transmit Data
6
+Vdc
–
+12 Vdc Output
Table A-6
SDU – Shared Diagnostic Control Panel Interface
Pin
Circuit
Function
Pin
FP IN
FP OUT
Function
1
Ground
Ground
Ground
4
SG
SG
Signal Ground
5
FPRDO
FPRDI
Received Data
6
FPSDI
FPSDO
Send Data
7
FPAALM
FPAALM
Audible Alarm
8
FPLALMO
FPLALMI
LED Alarm
Figure A-2. 50-Pin to Modular Plug Digital/Lease Conversion Cable