[time-nuts] Re: Austron 1250A ADEV Hump

[Bob Camp]

Hi

Typically when you have an oven go into long period oscillation, you can see the current “cycle” as it does so. It usually is not a subtle thing. It also typically creates a bigger hump than you are seeing. 

The usual cause for this happening is a high resistance in the feed wiring to the part. A bum bandanna plug or busted wire often are the root cause. 

Could it be the oven circuit? Sure it could, however it’s likely doing something pretty subtle.

Bob

> On Aug 7, 2024, at 10:55 PM, AC0XU (Jim) via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Time Nuts:
> 
> I have a few Austron 1250As. One of them has an ADEV with a large hump at around 50 secs time scale (2E-11). Using a 53230A counter, I can convince myself that I can see the frequency go up and down at around that period.
> 
> I guess that this is an oscillation in the oven circuits.Anyone have an idea whether this is curable and how?
> 
> Thanks!
> Jim
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