[time-nuts] 60Hz extra PPS: got one

Hal Murray hmurray at megapathdsl.net
Fri Aug 10 13:40:20 EDT 2012


azelio.boriani at screen.it said:
> What do you mean with "it finds noise"? When the PLL can no longer track the
> sinewave? 

I was thinking of a PLL to track the input and then a simple compare of raw 
input vs filtered output.  If they don't match closely the difference is the 
noise that the PLL is filtering out.  That's what I want to find.



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