[time-nuts] Datum 9390 Problems

John Miles jmiles at pop.net
Mon Mar 23 20:05:30 UTC 2009

> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Thomas Folkers
> Sent: Monday, March 23, 2009 12:11 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] Datum 9390 Problems
>    On Mar 22, 00:00 UT, both of our Datum 9390 model GPS receivers/time
> code generators started producing erroneous day of year and actual year
> values.

Same here, it's day "597" according to my Datum 9390 Rb clock.  The time
appears correct.  Also interesting is the 10 MHz output, which appears to be
about 2E-10 high compared to a Thunderbolt and cesium standard.  That wasn't
the case when I first bought the 9390 a year or so ago, but it's been true
for at least a couple of days now.  There's no indication in the display
that the rubidium's unlocked, as the status remains "Doing GPS correction
(System check OK)".

Anyone else seeing a constant frequency error from theirs?

-- john, KE5FX

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