[time-nuts] time-nuts Digest, Vol 64, Issue 14
Magnus Danielson
magnus at rubidium.dyndns.org
Sun Nov 8 19:13:58 UTC 2009
Dear Mark,
Mark Amos wrote:
> The when I ran these tests yesterday (measuring 182 seconds for 360 degress)
> it was with a homebrew GPSDO. However, subsequent runs showed poor
> irreproducibility of the results indicating that the homebrew unit might not
> a very stable source - so I switched to the Trimble for succeeding
> measurements, which have been very consistent. I may not have noticed the
> homebrew GPSDO problem if I hadn't compared it to the LPRO in these tests.
>
> Obviously, for most of you, this is pretty basic stuff, but these "visual
> aids" are useful for me to get an intuitive feel for the underlying
> phenomena.
>
> It will be interesting to watch the changes over time.
Recall that 1/f types of noises does not average well over time, so
there will be some walking around in phase. All to keep us on our toes a
little more. It is natural of feedback oscillators.
Cheers,
Magnus
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