[ntp:questions] Re: RMS error calculation

Piotr Trojanek ptrojane at mion.elka.pw.edu.pl
Thu Oct 30 12:03:19 UTC 2003


In article <vpt4uu7g1o840b at corp.supernews.com>, rtxo wrote:
>The ppm figure ntp produces, assuming constant temperature, should allow
>a simple linear extrapolation over time. Of course, temperature fluctuates
>and produces aging and other badness in rtxo's, so the extrapolation will
>not be accurate over, say, 6 months. But it should give a starting point.

Yes, true. But I want to estimate (predict) errors introduced by this
clock model, expecially those caused by "other badness". How should I
compute them from Allan deviation plots?

-- 
Piotr Trojanek



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