[email protected] wrote: > After first trying the Haicom HI-204III claiming to have PPS in the > manual without really having it, I bought a Garmin 18x LVC and > connected it to the onboard COM-port (COM1) on my Asus M3N78 PRO > mainboard. The Haicom is residing on a USB serial adapter (COM6) to > check how stable the offset is. > > Running ntp4.2.5p175-win-x86-bin configured with a couple of > timesources it seems like my ISP's NTP-server gets "disqualified". > Before setting up my own ref.clock I used to have ntp.online.no as my > "favorite NTP-server" thinking it would be the best / most local > server, but now I might offer them to use me as a clock-source? ;) > > Anyone wishing to see on their own, might check with ntpq > solbakken.dyndns.org What kind of accuracy is expectable with a NMEA > GPS with PPS connected to the DCD-line of the serial port? It's not > that I have any special need for extreme accuracy, but I suppose it's > allright having the most accurate clock in the neighborhood. :) > > > > Cheers, > Geir F
Geir, I typically see an offset within 0.2 milliseconds using a direct connection: http://www.satsignal.eu/mrtg/feenix_ntp_2.html With USB I would see within about 0.5 milliseconds. Both are much better than an Internet-based time source. Your Haicom has an offset of nearly 0.5s, suggesting that you might be using the wrong edge of the PPS signal. Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
