Re: [chrony-users] raspberry PPS Adafruit Ultimate GPS - rare PPS fix

["Jochen Demmer" <jochen@xxxxxxxxxxxxx>]

That did the trick, thank you very much.

On Tuesday, May 11, 2021 13:54 CEST, Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:
 
> On Tue, May 11, 2021 at 01:38:25PM +0200, Jochen Demmer wrote:
> > This is the config snippet:
> > refclock PPS /dev/pps0 lock DCF trust prefer
> > refclock SHM 0:perm=0644 precision 1e-1 offset 0 delay 0.55 refid NMEA trust noselect
>
> The sources and sourcestats reports show an offset of about 495ms, so
> you should specify it more like this
>
> refclock SHM 0 offset 0.5 delay 0.3 refid NMEA noselect
>
> Depending on stability of the message timing you could decrease the
> delay, but it doesn't really matter as long as it allows the PPS to
> lock.
>
> --
> Miroslav Lichvar
>
>
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