Hi Daniel, What you have is a 58503A, the GPS time/frequency receiver (the 58530A is a GPS bandpass filter).
Note that today is MJD 56829. Exactly 1024 weeks (7168 days) ago was November 4, 1994. So this looks like a typical GPSDO week number rollover issue. It shouldn't affect the time or the 1PPS or the 10 MHz. One thing to try is manually setting the date using a SCPI command. You can check www.realhamradio.com/GPS_websites_list.htm to see if anyone else has seen this on their 58503A or Z3801A receivers. Did you notice it happened just today, or did it start happening maybe a few weeks ago? I ask because recently we passed the 3/4 mark in the current 1024-week (19.6 year) GPS cycle. Specifically, on 2014-05-04 it was 768 weeks since the last rollover (1999-08-15) and 256 weeks before the next rollover (2019-03-31). /tvb ----- Original Message ----- From: "Daniel Burch" <[email protected]> To: <[email protected]> Sent: Saturday, June 21, 2014 10:06 AM Subject: [time-nuts] 58503A date code problem > Hi All, > > I have a HP/Symm 58530A that has the correct time, but date keeps > defaulting to 1994, Nov, 4 after GPS Lock. The pre-lock is 1996, so I do > see a change when it locks, just to the wrong date.....time is exactly > correct and tracks. > > Any ideas? > > Thanks! > > db _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
