[time-nuts] ADC sample voting algorithm?

Hal Murray hmurray at megapathdsl.net
Thu Oct 6 01:24:09 EDT 2016

time-nuts at febo.com said:
> That’s kind of why I’m going down the road of multiple samples - to see if
> there’s anything to it. 

I would hack up some way to grab a clump (say 10) of samples and print them 
out where you can capture them on a PC and analyze them.

I'd start by looking with the old Mark 1 eyeballs, then write hack code to 
filter out the good stuff so I can see the bad/interesting cases.

If you have a scope, it might be interesting to trigger on PPS and look at 
the ADC trigger and input voltage.  If you have a digital scope with the 
remember forever option, that would catch the delayed interrupt bug that Jim 
Harman reported.


The simple way to discard occasional bogus samples is to loop until you get 2 
identical samples.

These are my opinions.  I hate spam.

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