Comtech EF Data SLM-5650A - Manual (Page 66)

SLM-5650A Satellite Modem Revision 8
Rear Panel Connectors and Pinouts MN-SLM5650A
3–8
3.4.3 J9 Auxiliary Connector (HD-15F)
This is a female type ‘HD’ 15-pin (HD-15F) connector that provides TTL open
collector faults for the modulator and demodulator; a TTL input for external
transmit carrier mute; an Analog demodulator Q and I constellation monitor; and a
programmable DC voltage monitor for the demodulators AGC.
J9 Auxiliary Connector (HD-15F) Pinout
Pin # Signal Function Name
1 Demod I Channel I
6 Demod Q Channel Q
11 Reserved for Redundancy Switch
2 Spare
7 AGC Monitor Test Point AGC
12 Reserved for Redundancy Switch
3 Spare
8 Spare
13 Tx TTL Fault TxFLT
4 Reserved for Redundancy Switch
9 Reserved for Redundancy Switch
14 Rx TTL Fault RxFLT
5 Chassis Ground GND
10 Ext Carrier Off EXT
15 Reserved for Redundancy Switch
3.4.4 J10 Remote Connector (DB-9F)
This is a female Type ‘D’ 9-pin subminiature (DB-9F) connector that interfaces
the M&C functions to a remote location; the remote location can be an M&C
computer located away from the modem, but attached via cable to the remote
connector. This DCE interface is user selectable for either EIA-232 or EIA-485:
J10 Remote Connector (DB-9F) Pinout
EIA-232 EIA-485 * For EIA-485 2-Wire Operation:
• Only two wires are required
• Tie pins 4 and 8 together (both +)
• Tie pins 5 and 9 together (both -)
Pin # Name Pin #
2-Wire 4-Wire
Name Name
1 1 GND GND
6 DSR 6
2 RD 2
7 RTS 7
3 TD 3
8 CTS 8 +Tx/RX +Rx
4 4 +Tx/Rx +Tx
9 9 -Tx/Rx -Rx
5 GND 5 -Tx/Rx -Tx