I don't agree with the statement about meter pricing:
> One can buy 5 digit LED meters on ebay for $5 each +shipping.
The lowest cost "5 digit" voltmeter I can find listed on any site is the AN870,
which is sold for a multiple of 5X to 9X of the price you quote. I can find no
published accuracy
Hi
The gotcha with all this is the temperature coefficient. If they all have
roughly the same +100 ppm / C tempco (which they might), then the typical
lab temperature swing of 2 to 4 C will have them out in the 200 to 400 ppm
range (and more or less tracking each other ….).
1 LSB on a 16 bit
Learned members,
Wrote:
Well, I could measure the EFC voltage every other day and if it'schanging, then
it's the OCXO that’s drifting, if not (or not inaccordance to the DAC graph)
it's the DAC itself.
One can buy 5 digit LED meters on ebay for $5 each +shipping.
While I wouldn't necessarily
On Freitag, 4. September 2020 23:12:22 CEST Bob kb8tq wrote:
> > My temperature graph shows that there's some correlation, but not
> > pronounced enough to explain the behavior. The sensor is not thermally
> > coupled to the OCXO.
>
> The data shown does not suggest a oven controller issue.
>
>
