Specifications

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces
MN-DMD20-20LBST Revision 14 5–7
5.4.10 EIA-530 (J19)
The EIA-530 Port is an RS-422/V.35/RS-232 Connection. It is a 25-Pin Female “D” Connector.
Refer to Table 5-4 for pinouts.
Table 5-4. EIA-530 Port (RS-422/V.35/RS-232) 25-Pin Female “D” Connector (J19)
Pin No. Signal Name Signal Direction
1 Shield --- ---
2 Send Data A (-) SD-A Input
3 Receive Data A (-) RD-A Output
4 Request To Send A (-) RS-A Input
5 Clear To Send A (-) CS-A Output
6 Data Mode A (-) DM-A Output
7 Signal Ground SGND ---
8 Receiver Ready A (-) RR-A Output
9 Receive Timing B (+) RT-B Output
10 Receiver Ready B (+) RR-B Output
11 Terminal Timing B (+) TT-B Input
12 Send Timing B (+) ST-B Output
13 Clear T Send B (+) CS-B Output
14 Send Data B (+) SD-B Input
15 Send Timing A (-) ST-A Output
16 Receive Data B (+) RD-B Output
17 Receive Timing A (-) RT-A Output
18 Modulator Fault - Open Collector MF Output
19 Request To Send B (+) RS-B Input
20 Data Terminal Ready A (-) TR-A Input
21 Demodulator Fault DF Output
22 Data Mode B (+) DM-B Output
23 Data Terminal Ready B (+) TR-B Input
24 Terminal Timing A (-) TT-A Input
25 No Connection --- ---