PPS and selection algorithm issues

[Hal Murray]

eric.towers at okstate.edu said:
> Is prefer NMEA required or is a high quality source of interval labels
> required?  (PPS is a great metronome, but the intervals have no labels --
> gotta get the correct labels from somewhere.) 

There is nothing magic about NMEA.  It will also work with other GPS 
devices.

It should work with a network server.  I haven't tested that.

The advantage of using the GPS device is that ntpd will disable PPS 
processing if/when the GPS device fades out.  This is interesting because 
most/many low cost GPS receivers keep putting out their PPS signal when 
the GPS signal fades.  It will drift...


-- 
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