4 system alarms connector, db-25f – Comtech EF Data CRS-300 User Manual
Page 60
CRS-300 1:10 Redundancy Switch
MN/CRS300.IOM
Switch Connectors and Pinouts
Revision 19
3–6
3.2.1.4 System Alarms Connector, DB-25F
See Table 3-3 for the pinouts for the DB-25F “System Alarms”
connector on the CRS-230.
Table 3-3. System Alarms Connector
Signal Function by Mode of Operation
Pin “Show Fault” when Switch loses power (Default)
“Show No-Fault” when Switch loses power
13 Modem Summary DFM Fault – Normally Open
Modem Summary DFM Fault – Normally Closed
25
Modem Summary DFM Fault – Normally Closed
Modem Summary DFM Fault – Normally Open
12 Modem Summary Rx Traffic Fault – Normally Open
Modem Summary Rx Traffic Fault – Normally Closed
24
Modem Summary Rx Traffic Fault – Normally Closed
Modem Summary Rx Traffic Fault – Normally Open
11 Modem Summary Tx Traffic Fault – Normally Open
Modem Summary Tx Traffic Fault – Normally Closed
23
Modem Summary Tx Traffic Fault – Normally Closed
Modem Summary Tx Traffic Fault – Normally Open
10 Modem Summary Unit Fault – Normally Open
Modem Summary Unit Fault – Normally Closed
22
Modem Summary Unit Fault –Normally Closed
Modem Summary Unit Fault –Normally Open
9 Switch Unit Fault – Normally Open
Switch Unit Fault – Normally Closed
21
Switch Unit Fault – Normally Closed
Switch Unit Fault – Normally Open
8 Form ‘C’ Fault Relay – Common
Common for pins 9-13 and 21-24
Unchanged
20
Audio Indicator (Ground = Auto On / Float = Audio Off)
7 Ground
19
No Connection
6 Traffic Modem #1 Online Status – Normally Open (Note 2)
18
Traffic Modem #2 Online Status – Normally Open (Note 2)
5 Traffic Modem #3 Online Status – Normally Open (Note 2)
17
Traffic Modem #4 Online Status – Normally Open (Note 2)
4 Traffic Modem #5 Online Status – Normally Open (Note 2)
16
Traffic Modem #6 Online Status – Normally Open (Note 2)
3 Traffic Modem #7 Online Status – Normally Open (Note 2)
15
Traffic Modem #8 Online Status – Normally Open (Note 2)
2 Traffic Modem #9 Online Status – Normally Open (Note 2)
14
Traffic Modem #10 Online Status – Normally Open (Note 2)
1 Traffic Modem Online Status – Common
Common for pins 2-6 and 14-18
Notes:
1) “Normally open” refers to the NON-FAILED state.
2) Traffic Modem Online Status (Open = Online, Closed = Backup)