System Alarms - Db-25F Connector; Table 6-3. System Alarms Connector - Comtech EF Data CRS-300 Installation And Operation Manual

CRS-300 1:10 Redundancy Switch
Connector Pinouts
6.1.4 System Alarms – DB-25F Connector
Pin "Show Fault" when Switch loses power (Default)
Traffic Modem Online Status – Common
1
Common for pins 2-6 and 14-18
14 Traffic Modem #10 Online Status – Normally Open (Note 2)
2 Traffic Modem #9 Online Status – Normally Open (Note 2)
15 Traffic Modem #8 Online Status – Normally Open (Note 2)
3 Traffic Modem #7 Online Status – Normally Open (Note 2)
16 Traffic Modem #6 Online Status – Normally Open (Note 2)
4 Traffic Modem #5 Online Status – Normally Open (Note 2)
17 Traffic Modem #4 Online Status – Normally Open (Note 2)
5 Traffic Modem #3 Online Status – Normally Open (Note 2)
18 Traffic Modem #2 Online Status – Normally Open (Note 2)
6 Traffic Modem #1 Online Status – Normally Open (Note 2)
19 No Connection
7 Ground
20 Audio Indicator (Gnd = Auto On / Float = Audio Off)
Form C Fault Relay – Common
8
Common for pins 9-13 and 21-24
21 Switch Unit Fault – Normally Closed
9 Switch Unit Fault – Normally Open
22 Modem Summary Unit Fault –Normally Closed
10 Modem Summary Unit Fault – Normally Open
23 Modem Summary Tx Traffic Fault – Normally Closed
11 Modem Summary Tx Traffic Fault – Normally Open
24 Modem Summary Rx Traffic Fault – Normally Closed
12 Modem Summary Rx Traffic Fault – Normally Open
25 Modem Summary DFM Fault – Normally Closed
13 Modem Summary DFM Fault – Normally Open
Notes:
"Normally" refers to the NON-FAILED state.
1.
2. Traffic Modem Online Status (Open = Online, Closed = Backup)
Table 6-3 indicates the pinout for the DB-25F TMI System Alarms
connector.

Table 6-3. System Alarms Connector

Pin Description by Mode of Operation
6–3
"Show No-Fault" when Switch loses power
Unchanged
Switch Unit Fault – Normally Open
Switch Unit Fault – Normally Closed
Modem Summary Unit Fault –Normally Open
Modem Summary Unit Fault – Normally Closed
Modem Summary Tx Traffic Fault – Normally Open
Modem Summary Tx Traffic Fault – Normally Closed
Modem Summary Rx Traffic Fault – Normally Open
Modem Summary Rx Traffic Fault – Normally Closed
Modem Summary DFM Fault – Normally Open
Modem Summary DFM Fault – Normally Closed
Revision 16
MN/CRS300.IOM