[time-nuts] accurate 60 hz reference chips/ckts

Hal Murray hmurray at megapathdsl.net
Thu Dec 14 22:10:50 EST 2017


tvb at LeapSecond.com said:
> For GPS and OCXO the choice of time constant is fairly obvious. But the
> ADEV for mains frequency isn't quite as pretty. So I'm not sure several
> hours would work; maybe more like days or weeks? Here's a sample ADEV for
> power line frequency: 

Has anybody investigated what the ADEV looks like if you plot something like 
one hour samples over a day?  That is is the ADEV in the morning when the 
temperature is warming up the same as the ADEV in the evening when the 
temperature is cooling off?



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