It looks like in this Ubuntu I am using 28 SHM with gpsd which is different that the soekris.
Sent from mobile > On Oct 17, 2013, at 1:00 PM, Scott Mace <sm...@intt.net> wrote: > > I think the Fury does not guarantee that the PTIME:TCODE will be near the > 1-PPS leading edge. When I tried it with the HPGPS driver and a net4501, > ntpd wasn't happy with it. I also needed leap second processing to work, > holdover notification, and to collect other data from it. The GPGGA sentence > is on-time even if you are asking the Fury to do other things with SCPI > commands. Try setting your Fury hpgps driver fudge flag4 to 1 and I bet it > will stop working well. This flag logs the system:print output. > > Scott > >> On 10/17/2013 10:24 AM, Bill Dailey wrote: >> Interesting.. I see something completely different with my Fury. >> >> My hard-coded fudge factor is 0.077 yielding: >> >> Every 2.0s: ntpq -p Thu Oct 17 10:20:00 >> 2013 >> >> remote refid st t when poll reach delay offset >> jitter >> ============================================================================== >> -four2.fairy.mat 64.250.177.145 2 u 12 64 377 72.493 17.784 >> 0.524 >> -66-162-15-65.li 64.236.96.53 2 u 33 64 377 50.226 15.291 >> 1.181 >> +barricade.rack9 209.51.161.238 2 u 10 64 377 22.908 1.075 >> 0.362 >> -ccadmin.cycores 130.207.244.240 2 u 38 64 377 39.218 3.972 >> 1.241 >> 192.168.1.171 .INIT. 16 u - 1024 0 0.000 0.000 >> 0.000 >> +SHM(0) .FURY. 0 l 6 16 377 0.000 0.526 >> 0.034 >> *SHM(1) .PPSF. 0 l 5 64 377 0.000 0.008 >> 0.001 >> -europium.canoni 193.79.237.14 2 u 32 64 377 116.177 -1.573 >> 0.992 >> >> So... i could fine tune my fudge some but the point is the jitter is fairly >> low. (fury is from the sentences and ppsf is pps from fury). >> >> My soekris (soekris is the .171) numbers were much better but it is >> inoperable for some reason. >> >> Doc >> >> >>> On Thu, Oct 17, 2013 at 9:59 AM, Tim Shoppa <tsho...@gmail.com> wrote: >>> >>> 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. > _______________________________________________ > 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. _______________________________________________ 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.