Hi > On Jan 17, 2016, at 9:59 AM, Artek Manuals <manu...@artekmanuals.com> wrote: > > Hi guys > > Dave at ArtekManuals.com here. Long time electronics enthusiast/tinkerer/ ham > radio op. > Recently moved and am in the process of setting up my long dreamed of a > planned electronics lab and radio shack (NR1DX). > > At the heart of the lab is a HP Z3801 GPSDO to provide an external 10MHz > frequency reference. I bought the unit about 15 years ago but it has been in > environmentally controlled storage ever since. Serial prefix is 3517Axxxxx > and I am running this on a +54VDC supply. Upon firing the Z3801 up, the first > conundrum I am running into is that the unit does not seem to support setting > the date above 12/31/2007. Sometimes during the survey mode it will > automatically set the correct 2016 date , other times during the survey the > date stays stuck on 1996. The unit tracks the satellites and mostly settles > in around 1 second PPS at +/- 20ns with a holdover of 4 to 8us. More about > the "mostly" comment in a later post. > > On the surface the actual reported date is not a big deal for me. as long as > the date is not critical to the GPSDO function? The engineer in me would like > to be able to set the date correctly ......just because. When attempting to > set the using GPS:INIT:DATE I get an E-222 error (data out of range). > > So here are my initial questions. > 1) I assume that the date thing is a firmware issue? Is there updated > firmware out there that allows dates above 2007, 12, 31?
The firmware issue is in the GPS module inside the 3801. The “solution” is to swap out the GPS module. > 2) If all I care about is 10MHz accuracy, do I need to care about the date? No, the date in no way impacts the 10 MHz accuracy. > 3) Is there a different command string I should be using? You may eventually get it to take for a while. Check “GPS rollover” in the archives. There is a lot of information there on what’s going on. > 4)Software: I am running HP SATSTAT and Z38XX on a WIN-XP/32 laptop ...IS > there something better (or different) I should be running in the way of FREE > software? I looked at the GPSCon package and so far questions about support > for the software and portability eventually to WIN-10 supported have gone > unanswered (not a good sign) Again, check the archives. The Z38xx software is a good way to go. It was originally written for the 3801. > > Finally I am sure that the above have been addressed on older posts, but I > gave up searching in frustration. Is there an easy way to search the ENTIRE > list archive. It seems that the archives must be queried one month at time > which is REALLY TEDIOUS Google will search them quite nicely. Bob > > Dave > NR1DX > ArtekManuals.com > > -- > Dave > manu...@artekmanuals.com > www.ArtekManuals.com > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > _______________________________________________ > 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.
