Gps/Dcf77 And Sync-Box; Fault Elimination - Siemens SIMEAS R-PMU Manual

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8.5 Fault Handling
8.5.2

GPS/DCF77 and Sync-Box

Non-critical faults
Failure of one or two second pulses. SIMEAS R-PMU does not switch over to internal
synchronization, the device remains synchronized. PMU data is not marked as faulty.
Failure of second pulses for 3 seconds up to 5 minutes. SIMEAS R-PMU switches over to
internal synchronization, the device is no longer synchronized. PMU data is marked as faulty.
Critical faults
Second pulse failure for more than 5 minutes
Wrong second pulse distance
Wrong second pulse widths
DCF77 parity error
Minute mark missing
More than 5 non-critical faults within 10 minutes
With critical faults, the SIMEAS R always switches over to internal synchronization, the device
is not longer synchronized. PMU data is marked as faulty.
8.5.3

Fault Elimination

Due to impaired GPS reception properties of the timer, non-critical synchronization faults may
sometimes occur in the normal mode. If there are a lot of non-critical or some critical faults, you
have to check the clock master and all synchronization components.
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Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012