[time-nuts] Allan variance by sine-wave fitting
kb8tq at n1k.org
Thu Nov 23 08:13:56 EST 2017
One other side to this:
There are a number of papers out there on this basic technique (ADC frequency
measurement). There are a number of commercial products that do ADEV
and other measurements this way. It might be a good idea to at least mention
them. It would be even better to look at the sort of accuracy they achieve.
> On Nov 22, 2017, at 6:38 PM, Ralph Devoe <rgdevoe at gmail.com> wrote:
> Hi Time-nuts and Attila,
> Thanks for the very interesting and informative criticisms. That
> is what I was looking for. I don't agree with most of them, but I need
> some time to work out some detailed answers.
> To focus on the forest instead of the trees: The method uses a
> $300 student scope (Digilent Analog discovery- a very fine product), which
> any skilled amateur can modify in a weekend, and produce a device which is
> 10-100 times better than the expensive counters we are used to using. The
> software contains only 125 lines of Python and pretty much anyone can
> write their own. In practice this device is much easier to use than my
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts