[time-nuts] Some GPS performance plots
phk at phk.freebsd.dk
Wed Nov 3 10:19:55 EST 2004
In message <4188F665.5090502 at febo.com>, "John R. Ackermann N8UR" writes:
>Nothing sexy here, but in response to some serious confusion on the NTP
>mailing list, I put together some plots of the 1pps output from a
>Motorola M12+ Timing Oncore versus an Rb standard. It may be helpful if
>you want to point people to info about GPS timing capabilities.
You're not being fair to the M12+ here. You should correct the timestamp with the
"negative sawtooth correction" field from the serial data stream.
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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