Paul, Without seeing your data or your plot it's hard to be sure, but I want to second all of Warren's comments.
Remember that instability measurements and ADEV plots are always the sum of *three* noise sources: the reference oscillator, the oscillator being measured, and the instrument doing the measurement (time interval counter, frequency counter, phase meter). How much each of the three contributes to the final ADEV number is the key, and this also depends on tau. In an ideal world your reference is always much better than the oscillator you are measuring, at all tau, and your phase/frequency meter is better than both oscillators, at all tau. But this is not usually the case, especially when you're starting out or using off-the-shelf counters. /tvb _______________________________________________ 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.
