[time-nuts] 58503A, GPS vs UTC?

cook michael michael.cook at sfr.fr
Tue Jun 7 21:40:13 UTC 2011

Le 07/06/2011 21:15, rtm at lcs.mit.edu a écrit :
> I have an HP 58503A. It has an "Option H14,H19" sticker on the back. The
> circuit board has "58503-60001 Rev C" stamped on it. It has been running
> continuously and locked to GPS for a few days, and it knows the correct
> number of seconds between GPS and UTC.
> The unit displays GPS time, without the leap seconds correction. The
> front-panel display says "GPS xx:yy:zz", and ":system:status?" says "GPS
> 1PPS Synchronized to GPS Time", not "to UTC" as the manual shows.
> I'd be much obliged if anyone could tell me how to get the unit
> to display UTC instead of GPS time.
I think these use a similar command set to the Z3801A
:diag:gps:utc?                    should show 0 if the unit is in GPS, 1 
if UTC
if that gives coherent results, try
:diag:gps:utc 1
to force the mode
> Thank you,
> Robert
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