Timekeeping oddities on MacMini G4s

Achim Gratz Stromeko at nexgo.de
Fri Feb 10 20:10:25 UTC 2017

Achim Gratz writes:
>> Is anybody actually running gear where more than 3 fractional digits is 
>> interesting?
> Yes.  It is (surprise, surprise) a rasPi 2B that I've "ovenized", sort
> of.  The quantization to single digit ppb is quite noticeable in the
> residuals of predicted vs. actual frequency deviation.  Or rather was,
> now that this number resolves down to ppt.

Here's the plot to prove that point:

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The first 40 hours in the plot is before I recompiled ntpd with the
patch  that puts the loopstats to ppt precision.

+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptations for Waldorf Q V3.00R3 and Q+ V3.54R2:

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