Table 4-2. 'P1 | Relay' Pinout - Comtech EF Data MN/LBC4000.IOM Installation And Operation Manual

LBC-4000 L-Band Up/Down Converter System
Rear Panel Connectors
Item 9 – 'J7 | IF IN/OUT' (part of IDU Up / Down Converter Module)
Use this 'BNC' female connector as either the 'CONV A' downconverted IF input
signal (with the Down Converter IDU installed), or the upconverted IF output
signal (with the Up Converter IDU installed).
Item 10 – 'P1 | RELAY' Utility Connector
Use this D-Sub 9-pin female (DB-9F) connector to access the Form C Alarms
(relay closures). The mating connector is a DB-9M connector.
Pin # Description
1 Summary Fault NC
2 Summary Fault NO
3
4
5 Ground
6 Summary Fault COM
7 EXT_FLT_IN#
8
9
Item 11 – 'J1 | COM1' Serial Management Utility Connector
Use this D-Sub 9-pin female (DB-9F) EIA-232/EIA-485 connector for Serial
Interface operation. The mating connector is a DB-9M connector. See Table 4-3
for the EIA-485 2-Wire pinout specification; Table 4-4 for the EIA-485 4-Wire
pinout; and Table 4-5 for the EIA-232C pinout.
Table 4-3. 'J1 | COM1' 2-Wire
EIA-485 Pinout
Pin # Description
1 GND; Ground
2
3
4 +Rx/Tx; Signal
5 -Rx/Tx; Signal Complement
6
7
8 +Rx/Tx; Signal
9 -Rx/Tx; Signal Complement

Table 4-2. 'P1 | RELAY' Pinout

Notes
1) Pin 1 to Pin 6: FAULT
2) Pin 2 to Pin 6 OK (NO FAULT)
3) Pin 7 to Pin 5: Forced Faults (typically used
–
with external group delay equalizers)
–
–
–
Pin #
–
–
–
–
4–8
Table 4-4. 'J1 | COM1' 4-Wire
EIA-485 Pinout
Description
1 GND; Ground
2 –
3 –
4 +Tx; Signal
5 -Tx; Signal Complement
6 –
7 –
8 +Rx; Signal
9 -Rx; Signal Complement
MN/LBC4000.IOM
Revision 5