[time-nuts] Measuring ADEV with a PM6681 or CNT-81

[Hal Murray]

> The PM6681 does not appear to have support for measuring time
> intervals in positive and negative directions at the same time. That
> would limit the usefulness of this trick, it seems. Or is it just as
> valid to use the opposite edge of one of the signals? 

Will a long chunk of coax shift one signal far enough so you can be sure of 
the order?


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