Sometime (I didn't have it connected) in the last couple of weeks my Z3801A went into gps week rollover. It now reports the year as 1997. It had been working propely. Lady Heather caught the anomaly and automatically added 1024 weeks worth of seconds to the date/time which compensated for the error. I always wondered if that code would work... If you have a Z3801A that had been working properly you might want to check yours. Different firmware versions roll over at different times. BTW, Thunderbolts will roll over during the middle of next year...

On 9/4/2016 10:48 PM, Mark Sims wrote: > Sometime (I didn't have it connected) in the last couple of weeks > my Z3801A went into gps week rollover. > > If you have a Z3801A that had been working properly you might want to > check yours. Different firmware versions roll over at different > times. My Z3801 seems to be working fine, reporting today as 05 Sep 2016: <http://www.kd5byb.net/kd5bybgpscon/gpsstat.htm> That said, it had been off for a long time prior to it going back online in December 2014. When I fired it back up, it did misreport the date until I forced with, the set time command I believe? I've never been able to figure out the self-test error. It keeps working...so I keep using it... ;) 14 years of power-on time... :) thanks much and 73, ben, kd5byb

Hi The rollover is in the GPS module firmware. If you dig into it, they didn't quite update the firmware once every 3 months, but almost that often. Each manufacturer latched onto various versions as they sailed by. None of them had a validation process that could keep up with 4 releases a year... Bob > On Sep 5, 2016, at 8:44 AM, Ben Hall <kd5byb@gmail.com> wrote: > >> On 9/4/2016 10:48 PM, Mark Sims wrote: >> Sometime (I didn't have it connected) in the last couple of weeks >> my Z3801A went into gps week rollover. >> >> If you have a Z3801A that had been working properly you might want to >> check yours. Different firmware versions roll over at different >> times. > > My Z3801 seems to be working fine, reporting today as 05 Sep 2016: > > <http://www.kd5byb.net/kd5bybgpscon/gpsstat.htm> > > That said, it had been off for a long time prior to it going back online in December 2014. When I fired it back up, it did misreport the date until I forced with, the set time command I believe? > > I've never been able to figure out the self-test error. It keeps working...so I keep using it... ;) > > 14 years of power-on time... :) > > thanks much and 73, > ben, kd5byb > _______________________________________________ > 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.