"Martyn Smith" <[EMAIL PROTECTED]> writes: > Tom has plotted Allan Variance. I have plotted frequency accuracy. > > I get similar Allan Variance results to Tom. But if I just measure the > accuracy, e.g peak to peak frequency variations, rubidium's out- perform > OXCO's even when both are disciplined to GPS. > > I hope I'm not being stupid here.
Hi Martyn, Depending on the requirements there is a place for accuracy and a place for stability, or usually, a need for a certain amount of both. ADEV is a good measure because you can make a stable standard more accurate if you need to, but you cannot make an accurate standard more stable. Thus, the more fundamental measurement of an oscillator is stability. With the exception of high-end cesium standards, accuracy is something you tune for after-the-fact, but stability is something inherent in the design and manufacturing. /tvb p.s. Can you send me the raw data for the two 3600 sample runs in your paper? I'll send you accuracy and adev plots. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
