[time-nuts] Thunderbolt E failing

[Matthias Welwarsky]

Kevin,

how long has it been in storage? I expect the GPSDO doing quite clever things 
to compensate for temperature effects. There may be some parameters stored on 
the device and the characteristics of the OCXO may have changed after being 
turned off for an extended period.

Regards,
Matthias

On Samstag, 12. September 2020 18:13:35 CEST Kevin Schuchmann wrote:
> Matthias,
>     You are correct, having spent hours looking at all the stable areas
> and cooling and heating the gpsdo I find that when it reports that it is
> 116.25 F then it is stable.
> So now I guess I need to figure out why it is so picky. I will measure
> the current draw from a cold start and see if I see the oven warming up
> and then stabilizing and then heat and cool it and see how it reacts,
> and also look at the electronics and see if an area is overly sensitive
> to temperature.
> 
> Thanks
> Kevin
> 
> On 9/11/2020 2:26 AM, Matthias Welwarsky wrote:
> > On Freitag, 11. September 2020 01:08:09 CEST Kevin Schuchmann wrote:
> >> Guess my image didn't make it, I will add it as an attachment this time.
> > 
> > The temperature curve seems to show some correlation to what is happening
> > with the DAC. Seems that the DAC and OSC jumps are mostly during periods
> > of some thermal perturbation.
> > 
> > Regards,
> > Matthias
> > 
> > 
> > 
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