Back in 2003 or so, in the Z3801A with hpgps ntpd refclock driver, I had to add a negative offset of -0.98 seconds to the driver's decoding of PTIME:TCODE? to get it to be right in combination with PPS refclock.
The documentation in the Z3801A manual correctly described the actual behavior.... "PTIME:TCODE? Provides timecode message 980 to 20 ms prior to 1 PPS of indicated time". On Thu, Oct 17, 2013 at 9:40 AM, Scott Mace <sm...@intt.net> wrote: > I posted a patch for the Fury to work with ntpd in Oct 2008. It uses the > GPGGA output. The PTIME:TCODE? command is not "on-time" with the 1-PPS > output on the Fury, so the HPGPS driver does not work. > > http://www.febo.com/pipermail/**time-nuts/2008-October/033901.**html<http://www.febo.com/pipermail/time-nuts/2008-October/033901.html> > > the ntp-fury.diff: > http://www.febo.com/pipermail/**time-nuts/attachments/** > 20081020/846021fe/attachment-**0001.bin<http://www.febo.com/pipermail/time-nuts/attachments/20081020/846021fe/attachment-0001.bin> > > > Scott > > > > On 10/16/2013 04:44 PM, Frank Hughes wrote: > >> Hi, >> >> What NTP REFCLOCK can be used for a Jackson Fury? >> >> I know that the Jackson Fury docs suggest using: >> http://www.realhamradio.com/**gpscon-info.htm<http://www.realhamradio.com/gpscon-info.htm> >> >> But that means I would have to put up a windows server >> to replace the FreeBSD ntpd server I built for use w/ the Trimble TB. >> >> Looking for open source options, if possible. >> >> Thanks, >> Frank >> KJ4OLL >> ______________________________**_________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/** >> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> >> and follow the instructions there. >> >> ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.