Remote Oscillator (Ro) Input Event And Alarm Summary; Ro Frequency Transient Event - Symmetricom TimeSource 2500 Manual

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Remote Oscillator (RO) Input Event and Alarm
Summary
172
TimeSource 2500
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The TimeSource 2500 reports and escalates transient events, and
events on any remote oscillator input that is provisioned, but not
ensembled. Events on remote oscillator inputs not used in the
BesTime output ensemble never escalate to an alarm because the
remote oscillator inputs are not being used to generate the timing
outputs. Remote oscillator inputs used in the BesTime output
ensemble report transient events, which will escalate directly to an
alarm, bypassing the event level, because of the potential of the
remote oscillator input's alarm activity to impact the quality of the
timing outputs.
The following transient event, event, and alarm messages will
appear in the window(s) labeled Remote Osc A and/or Remote
Osc B on the Alarm Monitor screen.

RO Frequency Transient Event

The input RO frequency is measured with respect to the local
oscillator frequency. This measurement includes the expected
frequency error of the RO, and the local oscillator, over a
smoothing constant. The threshold is set to 2.0 ppm, to
accommodate the expected frequency range of the local oscillator
over the life of the product and the free-running accuracy of the
remote oscillator.
Maintenance action required: None.
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