Comtech EF Data Vipersat SLM-5650A, Installation And Operation Manual

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SLM-5650A Satellite Modem
Revision 10
Rear Panel Connectors 4–11 MN-SLM-5650A
Item
No.
Name Description
10 ‘J9 Auxiliary’ (HD-
15F) Utility Connector
This Type ‘HD’ 15-pin female (HD-15F) connector is used for redundancy switch
operations. It provides TTL (Transistor-to-Transistor Logic) 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 demodulator’s Automatic Gain Control (AGC).
Pin # Signal Function Name
1 Demod ‘I’ Channel I
2 Spare --
3 Spare --
4 Reserved for Redundancy Switch --
5 Chassis Ground GND
6 Demod ‘Q’ Channel Q
7 AGC Monitor Test Point AGC
8 Spare --
9 Reserved for Redundancy Switch --
10 Ext Carrier OFF EXT
11 Reserved for Redundancy Switch --
12 Reserved for Redundancy Switch --
13 Tx TTL Fault TxFLT
14 Rx TTL Fault RxFLT
15 Reserved for Redundancy Switch --
11 ‘J10 Remote’ (DB-9F)
Utility Connector
This Type ‘D’ 9-pin female (DB-9F) connector 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.
EIA-232 EIA-485
Pin # Name Pin #
Name
2-Wire 4-Wire
5 GND 5 - TX/ RX - TX
9 -- 9 - TX/ RX - RX
4 -- 4 + TX/ RX + TX
8 CTS 8 + TX/RX + RX
3 TD 3 -- --
7 RTS 7 -- --
2 RD 2 -- --
6 DSR 6 -- --
1 -- 1 GND GND
* 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 -)