Excellent questions. The goal is to measure with a certain interval the phase of repetitive events versus a clock. The clock is assumed to be perfect. Also the counters are assumed to be perfect. The events can change their frequency and phase but any change within one measurement interval is allowed to be averaged. The measurement interval can be much larger than the period of the events, this allows the measurement to make use of the many events for for one measurement.
Practical example: The clock is a 200MHz perfect clock. The events come from an unknown quality XCO at 10 MHz The measurement interval is 0.1 seconds The goal is to derive the phase (and also the frequency) of the XCO versus the clock from the counter data in the highest possible accuracy. Once this is done the rest of the post processing of multiple measurements can be done in tools like Timelab. It would be extremely interesting if it is also possible to calculate a "quality" figure that quantifies the amount of deviation of the events versus the presented measurement. This would help someone looking at result of the measurement to understand the real accuracy And I am aware that as I don't know anything about this subject it seems simple, and probably is not. Erik. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.