Connector Pinouts - Comtech EF Data SDM-650B Installation And Operation Manual

Configuration

3.2.1.2 Connector Pinouts

The RS-422 and MIL-STD-188-114 interface is provided on a 37-pin female D
connector, accessible from the rear panel of the modem. Screw locks are provided for
mechanical security of the mating connector.
SIGNAL GROUND
SEND DATA
SEND TIMING
RECEIVE DATA
REQUEST TO SEND
RECEIVER TIMING
CLEAR TO SEND
DATA MODE
RECEIVER READY
TERMINAL TIMING
MOD FAULT
DEMOD FAULT
MASTER CLOCK
(INPUT)
3–12
Signal Function
SG
SD-A
SD-B
ST-A
ST-B
RD-A
RD-B
RS-A
RS-B
RT-A
RT-B
CS-A
CS-B
DM-A
DM-B
RR-A
RR-B
TT-A
TT-B
MC-A
MC-B
Name Pin #
1, 19, 20, 37
4
22
5
23
6
24
7
25
8
26
9
27
11
29
13
31
17
35
− 3
−
21
16
34
SDM-650B Satellite Modem
Rev. 5