Operating instructions

Rear Panel Interfaces DMD20/DMD20 LBST Universal Satellite Modem
5-28 TM103 – Rev. 2.8
10 No Connection --- ---
11 Receive Data B (+) RD-B Output
12 Drop Data Out (-) DDO-A Output
13 Insert Data In (-) EXC (-) IDI-A Input
14 Mod Fault MOD-FLT Open Collector
Output
15 Demod Fault DMD-FLT Open Collector
Output
5.12.4 ESC ALARM (J5)
The ESC (Engineering Service Circuits) Alarms Port is a 25-Pin Female “D” Connector. Refer to
Table 5-18 for pinouts.
Table 5-18. ESC ALARM Port 25-Pin Female “D” Connector (J1)
Pin No. Signal Name Signal Direction
1 Ground GND ---
2 Backward Alarm Out - 1NO ESCBWO 1NO N/A
3 No Connection NC ---
4 Backward Alarm Out - 2 NO ESCBWO 2NO N/A
5 No Connection NC ---
6 Backward Alarm Out - 3 NO ESCBWO 3NO N/A
7 Ground GND ---
8 Backward Alarm Out - 4 NO ESCBWO 4NO N/A
9 No Connection NC ---
10 Backward Alarm In - 2 ESCBWI 2 Input
11 Backward Alarm In - 4 ESCBWI 4 Input
12 No Connection NC ---
13 No Connection NC ---
14 Backward Alarm Out - 1 C ESCBWO 1C N/A
15 Backward Alarm Out - 1 NC ESCBWO 1NC N/A
16 Backward Alarm Out - 2 C ESCBWO 2C N/A
17 Backward Alarm Out - 2 NC ESCBWO 2NC N/A
18 Backward Alarm Out - 3 C ESCBWO 3C N/A
19 Backward Alarm Out - 3 NC ESCBWO 3NC N/A
20 Backward Alarm Out - 4 C ESCBWO 4C N/A
21 Backward Alarm Out - 4 NC ESCBWO 4NC N/A
22 Backward Alarm In – 1 ESCBWI 1 Input