David J Taylor wrote: > Folks, I'm thinking of adding my new Garmin GPS 18 LVC just to see how > well it might function with serial input alone, so I have some > questions. > With the NMEA refclock driver (type 20): > > - is it possible to select the baud rate without re-compiling or must > it be 4800? I would have thought that having the higher baud rate > might perhaps improve jitter. > > - is a PPS signal actually required, or will the driver function with > just the serial input (I realise that accuracy will be much worse > without the PPS, but his is just for testing). > > - is it possible to use NTP just to observe a refclock, without > actually syncing time with it? > > Thanks, > David
OK, I did some testing! I'd still like to know if you can select the COM port and baud rate without recompiling. - yes, it works without the PPS input, although the jitter seems as high as 5 msec - set stratum to 10 to stop it syncing and just observe - would that work? David _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
