[time-nuts] Z3805 incident

Volker Esper ailer2 at t-online.de
Fri Nov 30 00:42:50 UTC 2012


...and I should see the loop time constant in the ADEV, too - if that is 
the case, the time constant should be about 2000 s, shouldn't it? (see 
picture)

Volker


Am 29.11.2012 05:35, schrieb Said Jackson:
> Volker,
>
> This is a classic crystal jump. The crystal changed its frequency magically from one second to the next and the software compensated for it
>
> You can nicely see the time constant of the loop..
>
> Bye
> Said
>
> Sent From iPhone
>
> On Nov 28, 2012, at 13:24, Volker Esper<ailer2 at t-online.de>  wrote:
>
>> When looking at the PPS TI vs. time curve today I felt kind of appalled - a big incident peak (not an outlier) on the curve! See picture.
>>
>> What happened to my Z3805? Any idea?
>>
>> No entry in the error log, the staus log says
>>
>> 2012-11-28 10:01:30: The Smartclock Status has changed to LOC
>> 2012-11-28 10:01:40: The last Smartclock Status is undefined
>> 2012-11-28 10:01:40: Starting with status LOCK
>>
>> Thanks
>>
>> Volker
>> <DF9PL_GPSDO_2_20121128_2108_PPS-TI_b.jpg>
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