On May 9, 3:24 pm, "David J Taylor" wrote: > Folks, I made some tests with various settings for the NMEA driver and the > results are here: > > http://www.satsignal.eu/ntp/NTP-on-Windows-serial-port.html#usb
Congratulations on showing serial PPS refclock connected via a USB RS-232 adapter can do so well. I did not expect you to match internet performance, and you substantially exceeded the performance you were getting with a refclock one LAN hop away. I believe it is time to update the conventional wisdom on connecting a refclock via a USB RS-232 adapter. > Maarten's guess about how to specify the COM port was correct (thanks), > but setting a port above COM3 failed, so I have created bug report 1183. Bug 1183 is resolved in 4.2.5p175, which removes the long-deprecated "typeunit" array that meant unit numbers had to be less than 4. In theory ntpd on Windows should support COM1: through COM255:, and David Taylor verified COM4: now works. Cheers, Dave Hart _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
