[time-nuts] Oscillator Aging Trends

[Bob kb8tq]

Hi

Very nice plots and some useful information. At some point the question becomes 
what the 8607 is doing. Both are seeing changes in temperature (and pressure). 
Eventually that will get into the picture. From the plots so far …. not so much yet. 

Will we be getting weekly updates for the next couple years? :)

Bob

> On Mar 25, 2019, at 2:32 PM, John Ackermann N8UR <jra at febo.com> wrote:
> 
> Here are two more of those neat images-worth-a-thousand-words that sometimes show up.
> 
> I've been testing an Oscilloquartz 8600B BVA and did a series of 24 hour measurements over about a week, starting a day after powering it up. When you put all the ADEV plots on a single chart, you can see how the performance improves day over day.  If you put the frequency plots on one graph with "start at zero" selected, the sequential improvement is really dramatic.
> 
> John
> 
> (Notes:  1.  The reference was an 8607 BVA that's been running continuously for several years.  2.  There are a few hours of dead time between the end of most runs and the beginning of the next.  There's about three days of dead time before the final run because I was out of town.)
> 
> <aging-freq.png><aging-adev.png>_______________________________________________
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