[SI-LIST] EMI--bare board vs. case
- From: "Boris Yost" <yost@xxxxxxxxxxxxxxxxxxx>
- To: "Si-list@freelists. org" <Si-list@xxxxxxxxxxxxx>
- Date: Mon, 21 Apr 2003 20:43:53 -0400
Dear List:
Is there any expectation for EMI emissions of a bare board vs. an
assembled
system? Does anybody ever test a bare board for EMI...with the idea that a
case is expected to attenuate N dBuV and then it will be low enough to pass?
Or have a standard for noise on power/ground planes somehow correllated with
emissions? Or, more pointedly...
Is it as simple as:
(M dB generated)
- (N dB attenuated)
__________________
(P dB picked up by the FCC) ?
Boris
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