Alarm Outputs - Symmetricom TimeSource 2500 Manual

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Table I. Alarm Output Connector Pinouts
Pin
1
5
2
4
82
TimeSource 2500
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Alarm Outputs

Shelf Front Panel
The RJ45 connector labeled Alarms provides dry-contact relay
closure points. The relay contacts are normally open, and close
when reporting an alarm. Figure 26 shows the location of the
connector. Connect between the Major pins for a major alarm, and
between the Minor pins for a minor alarm. The pinouts of the
connector are listed in Table I.
Alarm
Major
Minor
Note: Pins not listed are reserved for future use.
Wire-Wrap Rear Panel
The two wire-wrap connectors labeled ALARM MAJ and MIN
provide dry-contact relay closure points. Figure 27 shows the
location of the connectors. Connect between the MAJ connector
+ and – pins for a major alarm, and between the MIN connector +
and – pins for a minor alarm.
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Contacts Contacts
During During Alarm
No Alarm
Open Closed
Open Closed
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Contacts
During
Power Off
Closed
Open
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