[time-nuts] Jitter Test on Dividers

Brian Kirby kilodelta4foxmike at gmail.com
Mon Sep 21 22:22:10 UTC 2009


And a FYI - it was 60 hertz power here....

Magnus Danielson wrote:
> Poul-Henning Kamp wrote:
>> In message <4AB6B76D.1010509 at rubidium.dyndns.org>, Magnus Danielson 
>> writes:
>>
>>> Seems less likely. I was pondering if the power line frequency was 
>>> doing some nice beat frequency with the system... 
>>
>> 1250 seconds at 50Hz = 62500 periods.
>>
>> Assume one extra period over 1250 seconds: 62500 + 1 = 62501
>>
>> Relative frequency precision: 62501/62500 = 1.000016 = 16 PPM.
>>
>> In your dreams :-)
>>
>
> I didn't bother doing the math before I dismissed it. Seemed unlikely 
> for starters... the AC theory seemed more likely.
>
> Cheers,
> Magnus
>
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