[ntp:questions] Inexpensive OEM GPS units?

Steve Kostecke kostecke at ntp.org
Wed Nov 14 16:54:03 UTC 2007

On 2007-11-14, Chris Adams <cmadams at hiwaay.net> wrote:

> Once upon a time, Steve Kostecke <kostecke at ntp.org> said:
> >http://support.ntp.org/Support/GarminGPS18LVCPerformance
> Is the tool used to generate the big plot in the middle available?

The plot is generated with Gnuplot http://www.gnuplot.info/ and my
(unreleased) Makefile and plot file.

Assuming that you can live without the nice labels on the X-axis, etc.,
the plot command you give to Gnuplot is ...

plot "loopstats.YYYYMMDD" using 2:($5*1000) with impulses title "RMS Jitter", \
"loopstats.YYYYMMDD" using 2:($3*1000) with impulses title "Offset", \
"loopstats.YYYYMMDD" using 2:4 with lines axes x1y2 title "Frequency"

Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/

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