Hi, In an old IBM thinkpad T22 laptop that runs FreeBSD 9.2, I have configured a NTP server that gets the PPS signal from a Garmin GPS 18 LVC, as described here: http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm
The /etc/ntp.conf contains the following generic NMEA GPS receiver driver configuration: 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 I let it run for a few days, however I still have every now and then huge peaks (between -50 and +30 us) of the clock offset as seen in the following graph: http://goo.gl/JpSyeO So I am wondering: why those repeating huge clock offsets? They allays starts with a negative peak, followed immediately by a positive one. Is this because of the faulty laptop internal clock, that drifts away with 30-40 us every now and then? Any thoughts? Many thanks, Adrian _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
