Temperature (Tp) Event And Alarm Summary; Tp Step Event; Tp Step Alarm - Symmetricom TimeSource 2500 Manual

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Temperature (TP) Event and Alarm Summary

Temperature event and alarm data reports temperature changes of
the local oscillator oven. Step and jitter alarms are likely
indications of a hardware fault. A problem with outside air (room)
temperature is indicated by a standing slew alarm, if no other
alarms are present.
The following transient event, event, and alarm messages will
appear in the window labeled Local Osc Temp on the Alarm
Monitor screen.

TP Step Event

The step event category is used to capture abnormal step changes
in the oven current of the oscillator.
Maintenance action required: None.

TP Step Alarm

A step event should not occur in a normally operating system after
the first minute from a cold power-up. The oven current step event
is processed through a leaky-bucket alarm manager, to control
escalation to a minor alarm. The manager is set so that a single
event will not escalate to an alarm. The nominal time to escalate to
an alarm is 900 ms. The maximum time to retire an alarm is
20 seconds.
Maintenance action required: If the system is not in warm-up,
replace the shelf.
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Troubleshooting
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