On 2013-12-29, Adrian P <[email protected]> wrote: > So "o" means PPS is used... In my case, I only have "*" in front of > the driver IP...
In my experience the NMEA driver displays the '*' talley-code even when PPS is in use. > So I suppose NTP is not using the PPS signal... hmm, > wondering why. This is my output: > > server 127.127.20.0 mode 1 minpoll 4 maxpoll 4 prefer > fudge 127.127.20.0 flag1 1 flag2 0 flag3 1 refid PPS Setting the RefID to PPS is purely cosmetic and propagates a falsehood when the NMEA driver is not using PPS. > root@debian:~# ntpq ... -pn [snip] > remote refid st t when poll reach delay offset jitter >============================================================= > *127.127.20.0 .PPS. 0 l 15 16 377 0.000 14.437 23.063 > root@debian:~# The offset and jitter shown above suggest to me that the NMEA driver is not using the PPS signal. -- Steve Kostecke <[email protected]> NTP Public Services Project - http://support.ntp.org/ _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
