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CRS-300 1:10 Redundancy Switch Revision 16
Connector Pinouts MN/CRS300.IOM
6–3
6.1.4 System Alarms – DB-25F Connector
Table 6-3 indi
cates the pinout for the DB-25F TMI System Alarms
connector.
Table 6-3. System Alarms Connector
Pin Description by Mode of Operation
Pin “Show Fault” when Switch loses power (Default) “Show No-Fault” when Switch loses power
1
Traffic Modem Online Status – Common
Common for pins 2-6 and 14-18
Unchanged
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)
8
Form C Fault Relay – Common
Common for pins 9-13 and 21-24
21 Switch Unit Fault – Normally Closed Switch Unit Fault – Normally Open
9 Switch Unit Fault – Normally Open Switch Unit Fault – Normally Closed
22 Modem Summary Unit Fault –Normally Closed Modem Summary Unit Fault –Normally Open
10 Modem Summary Unit Fault – Normally Open Modem Summary Unit Fault – Normally Closed
23 Modem Summary Tx Traffic Fault – Normally Closed Modem Summary Tx Traffic Fault – Normally Open
11 Modem Summary Tx Traffic Fault – Normally Open Modem Summary Tx Traffic Fault – Normally Closed
24 Modem Summary Rx Traffic Fault – Normally Closed Modem Summary Rx Traffic Fault – Normally Open
12 Modem Summary Rx Traffic Fault – Normally Open Modem Summary Rx Traffic Fault – Normally Closed
25 Modem Summary DFM Fault – Normally Closed Modem Summary DFM Fault – Normally Open
13 Modem Summary DFM Fault – Normally Open Modem Summary DFM Fault – Normally Closed
Notes:
1. “Normally” refers to the NON-FAILED state.
2.
Traffic Modem Online Status (Open = Online, Closed = Backup)