Specifications

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces
MN-DMD20-20LBST Revision 14 5–29
5.13.4 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
23
Backward Alarm In – 3
ESCBWI 3
Input
24
No Connection
NC
---
25
No Connection
NC
---
5.13.5 SD (DDI) (J6)
The Send Data (Drop Data In) Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.13.6 DDO (J7)
The Drop Data Out Port (Unbalanced) is a 75-Ohm Female BNC Connector.
5.13.7 IDI (J8)
The Insert Data In Port (Unbalanced) is a 75-Ohm Female BNC Connector.