[ntp:questions] GPS_NEMA, but high offset and jitter?

Kelsey Cummings kgc at sonic.net
Thu Feb 25 22:19:30 UTC 2010

Rob wrote:
> This is normal with NMEA.  You never will get stable time when using
> an NMEA time source.  For that, you need PPS.  Your PPS is apparently
> not working.

It feels like I must be missing something here, running with -d I can 
confirm that PPS doesn't appear to be working - after enabling flag3 as 

25 Feb 13:53:21 ntpd[75656]: 041d 0d kern PPS enabled
25 Feb 13:53:21 ntpd[75656]: 042d 0d kern PPS no signal

Is there any other way to watch the signal to see if it's reaching the 
serial port correctly?


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