Comtech EF Data SLM-5650A Installation And Operation Manual page 75

Item
Name
No.
10 'J9 Auxiliary' (HD-
15F) Utility Connector
11 'J10 Remote' (DB-9F)
Utility Connector
Rear Panel Connectors
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
1 Demod 'I' Channel
2 Spare
3 Spare
4 Reserved for Redundancy Switch
5 Chassis Ground
6 Demod 'Q' Channel
7 AGC Monitor Test Point
8 Spare
9 Reserved for Redundancy Switch
10 Ext Carrier OFF
11 Reserved for Redundancy Switch
12 Reserved for Redundancy Switch
13 Tx TTL Fault
14 Rx TTL Fault
15 Reserved for Redundancy Switch
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
Pin # Name
5 GND
9 --
4 --
8 CTS
3 TD
7 RTS
2 RD
6 DSR
1 --
* 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 -)
•
4–11
SLM-5650A Satellite Modem
Description
EIA-485
Name
Pin #
2-Wire
5 - TX/ RX
9 - TX/ RX
4 + TX/ RX
8 + TX/RX
3 --
7 --
2 --
6 --
1 GND
Revision 10
Name
I
--
--
--
GND
Q
AGC
--
--
EXT
--
--
TxFLT
RxFLT
--
4-Wire
- TX
- RX
+ TX
+ RX
--
--
--
--
GND
MN-SLM-5650A