Comtech EF Data CD-MNLBC4000, Installation And Operation Manual

Page: 52 / 166

LBC-4000 L-Band Up/Down Converter System MN/LBC4000.IOM
Rear Panel Connectors Revision 5
4–8
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.
Table 4-2. ‘P1 | RELAY’ Pinout
Pin # Description Notes
1 Summary Fault NC 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)
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
Table 4-4. ‘J1 | COM1’ 4-Wire
EIA-485 Pinout
Pin # Description Pin # Description
1 GND; Ground 1 GND; Ground
2 – 2 –
3 – 3 –
4 +Rx/Tx; Signal 4 +Tx; Signal
5 -Rx/Tx; Signal Complement 5 -Tx; Signal Complement
6 – 6 –
7 – 7 –
8 +Rx/Tx; Signal 8 +Rx; Signal
9 -Rx/Tx; Signal Complement 9 -Rx; Signal Complement