> David, > > I got this going and everything is working well. However, comparing > NTP time to an IRIG board time with a GPS antenna, I see a difference > of 100ms. Not sure where this came from. > > Jack
Good question! What is the pulse-length of your GPS PPS, and to which edge is NTP syncing? There's a setting in NTP you can tweak. I think that mine is probably right as I see only a few milliseconds of offset compared to Internet servers. I have the DCD line directly connected to the output from the GPS 18 LVC with no inverter in the path. Cheers, David _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
