[time-nuts] GPS orthodontics: sawteeth & hanging bridges - the effect of time averaging
Poul-Henning Kamp
phk at phk.freebsd.dk
Thu Dec 21 13:12:48 EST 2006
In message <003001c72528$6aa53540$6400a8c0 at EBS8500>, "Brooks Shera" writes:
>Averaging the sawtooth/bridge correction data for several averaging times
>produced the following results (2):
>
>Avg Time Standard Deviation Residual Jitter
>none 8.4 nsec +/- 15 nsec
>30 sec 1.53 +/- 4.3
>100 sec 0.79 +/- 2.2
>300 sec 0.33 +/- 0.7
What kind of environment did you have the oncore in ?
The nasty thing about the hanging bridges is that the better
thermal situation you have, the longer they last...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | 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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