[time-nuts] Some GPS performance plots

Poul-Henning Kamp 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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