[time-nuts] Jitter Test on Dividers

Poul-Henning Kamp phk at phk.freebsd.dk
Mon Sep 21 06:32:13 UTC 2009


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 :-)

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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