=I've come across a board that radiates badly, the source appears to be the
=oscillator itself.... I managed to drop emissions by increasing the X-TAL
=resonant caps from 47pf to 150pf. All waveforms still looked fine.
=
=Any suggestions on what could be happening, and thoughts on the best ( ie
=quietest ) X-TAL configuration to run at 20 MHz would be appreciated.
=
=Thanks,
=
=Derek Walton
=Owner: L F Research EMC Design and Test Facility, Poplar Grove, IL.
Even one step back -- some devices allow connection of a crystal or an
oscillator. Does anyone have any idea which would have lower
emissions? I've seen oscillators recommended, but I would think
crystals would be better (given same frequency/package).
--
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Mike Mayer Artesyn Communication Products, Inc
Madison, WI
http://www.artesyn.com/cp
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