[ntp:questions] Fwd: Re: NetBSD GPS/PPS using 4.2.6p3

David J Taylor david-taylor at blueyonder.co.uk.invalid
Thu Aug 25 17:30:51 UTC 2011


"unruh" <unruh at wormhole.physics.ubc.ca> wrote in message 
news:slrnj5co9d.b45.unruh at wormhole.physics.ubc.ca...
[]
> Nope, I meant that system time should be within .4 sec. That will not
> matter if you use gpsd since that should accurately get the time of the
> pps pulse from the nmea of the gps unit (assuming it is not broken like
> some of the garmin 18x are).

To clarify, the Garmin hardware is not broken, but some recent firmware 
should be avoided as the NMEA serial string may stretch into the second 
following the PPS pulse!  Use the current 3.70 firmware for unambiguous 
results, or firmware 3.20 or earlier.

Cheers,
David 




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