Modern counters have "interpolators" (now called "time to digital converters") that can measure fractions of a cycle. Even the old Agilent 53132, designed 15 years ago, measures any frequency to 12 significant figures in one second. For example, it will display 10 MHz to .00001 Hz using a 1 second gate time.
Rick Karlquist N6RK Mike S wrote: > At 06:00 AM 2/14/2008, Martyn Smith wrote... >> I have an article on my web site > > You might want to proof read that again. "very gone Allan variance," > and there's more. > >> where I compare a OXCO based unit versus my rubidium's unit. > > Please explain how a counter resolves to .0003 cycles in a one second > gate. A counter, well, counts. Counting involves natural numbers. Also, > please tell us what time base was used on this unspecified "counter" > for these measurements. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.