--------
In message <[email protected]>, "Richard 
(Rick) Karlquist" writes:

>I need to measure ADEV on a source that has spurious
>sine wave frequency modulation on it.

The biggest factor is the ratio between the tau's
you do allan for, and the modulation frequency.

If modulation divides *cleanly* into tau and preferably
with a big factor, then you can ignore it.

Otherwise things get really messy and quite intractable.

Picking your taus as multiple of the modulation is usually the best strategy.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[email protected]         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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