Problem with GPSD refclock
Gary E. Miller
gem at rellim.com
Mon Jan 30 20:05:33 UTC 2017
Yo Rich!
On Sun, 29 Jan 2017 19:31:10 -0800
Rich Wales <richw at richw.org> wrote:
> Gary E. Miller wrote:
>
> > No, setting a good fudge on the NMEA time is a bad thing. You only
> > want ntpd to use SHM(1) as a last resort. If you know you have
> > good network time as a backup then set SHM(1) to noselect.
>
> I'm confused here.
My mistake. Just testing if you are awaake. :-)
> First of all, did you really mean to say "SHM(1)" in the above? My
> understanding was/is that SHM(1) is the GPS's NMEA time info combined
> with the PPS signal (and will therefore normally be highly accurate),
> and SHM(0) is raw NMEA without PPS (very inaccurate with high jitter).
You are correct, I meant noselect on SHM(0).
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem at rellim.com Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can’t measure it, you can’t improve it." - Lord Kelvin
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