[ntp:questions] Garmin firmware update - GPS 18x 5Hz software version 3.20

Miroslav Lichvar mlichvar at redhat.com
Wed Jun 22 12:41:40 UTC 2011

On Fri, Jun 17, 2011 at 10:11:19AM +0100, David J Taylor wrote:
> >>You may want to watch for several days.   Previous 18x LVC
> >>firmware (3.60)
> >>drifted on my system from 0.5 to 1.4 seconds over a span of 6
> >>days. I've
> >>been running a beta version of 3.70 for several weeks with no problems.
> >
> >How stable is it?
> >
> >I don't care what the offset is as long as it's constant.
> It's constant, according to a graph I've seen from Steve.

I've updated the firmware on my unit from 3.20 to 3.70 and it seems
the jitter has indeed improved, see:

The middle part is when the unit was upgraded.

Miroslav Lichvar

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