Keith Hardin wrote:
>
> The output spectrum is a series of stationary harmonics
> spaced at 30kHz apart....
This is very similar to a problem I had with
PLL in a product once. Major spike at the
main frequency coming through with a picket
fence on either side spaced out by the freq.
of the PLL. Poor board layout was the culprit
if I remember correctly.
Didn't we have a gentleman from Lexmark who
started the spread spectrum technique do a
presentation at the Santa Clara EMC Society?
I seem to remember there being some constraints
to do doing it - the dither being less than some
rather low percent of the freq being dithered?
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