7EN02-0390-03

Clock source time quality flag

The meter’s clock source time quality flag is primarily used to report time quality information for digital input events, such as status alarms, in Sequence-of-Events Recording (SER) applications.

The meter keeps track of the time difference between the meter’s internal clock and the time sync source.

When the meter’s Clock module’s Use Clock Source Qual Flag is set to use flag, the Diagnostics module’s Receiver Status output register is set to:

  • locked if the time difference between the GPS time sync source or PTP master and meter clock is within ±1 ms of each other

  • unlocked if the time difference between the GPS time sync source or PTP master and meter clock is greater than ±1 ms of each other

Add as a subsection under “Supported time synchronization sources” in the Time and Timekeeping chapter

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