[ntp:questions] Is dispersion > jitter in all situations

John Hasler jhasler at newsguy.com
Tue Jan 5 18:30:26 UTC 2010


Bill Unruh writes:
> However, the only way you can really know is to get a GPS with PPS,
> hook it up to your machine and measure the difference in time between
> the Stratum 3 set clock and the GPS time.

I think that what he wants is the "expected time" (he has that: the time
Ntpd reports) and a 95% confidence interval for it.  That is, he wants
to be able to say "The time is within +- 4.2usec of 2300UTC with 95%
confidence".
-- 
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA




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