[time-nuts] External clock for Analog to Digital Converter in GPS Rx front-end

John Miles jmiles at pop.net
Fri Mar 2 23:28:13 EST 2007


Yep, that's great as long as the comparator's already there or can be easily
added.  I was mainly wrinkling my nose at the idea of adding hybrid
combiners and the like, just to introduce some jitter.

-- john, KE5FX

> > Well, sure, but it also causes all kinds of secondary distortion
> > effects (such as potential clipping at the rails of whatever you're
> > feeding the signal into).  I don't think AM'ing the signal when you
> > want PM is a good idea, when it's so easy to apply PM by itself.
>
> He's feeding a digital clock to an A/D.  Someplace he has to
> "clip" the sine
> wave to make a digital signal.
>
> Feeding noise into the other side of the comparator seems like a good
> approach to me.
>
>
>




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