[time-nuts] Question on crystal jumps
hmurray at megapathdsl.net
Fri Oct 24 06:46:33 UTC 2008
> A lattice filter is very simple in comparison, you have the same
> voting scheme of multiple xtals (and you can have many more than
> three) but none of the complexity of the oscillator arrangement. You
> just have to make sure that it is driven with the reference standard
> and all the stages could be manually tuned for peak after a burn in.
How big are the jumps relative to the bandwidth of an individual filter stage?
If one jumps, will it be so far off that nothing gets through?
I assume crystals used in filters will age like the ones used in oscillators,
so the "manually tuned" will really require a micro processor to keep them in
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