RE: [SI-LIST] : Hopefully not a controversial question ...

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From: mbenson@wavecrestcorp.com
Date: Thu Feb 24 2000 - 12:15:36 PST


Can someone explain what this technique is??

Thanks,

Mike Benson

-----Original Message-----
From: owner-si-list@silab.eng.sun.com
[mailto:owner-si-list@silab.eng.sun.com]On Behalf Of Doug McKean
Sent: Thursday, February 24, 2000 1:05 PM
To: SI Discussion Group
Subject: [SI-LIST] : Hopefully not a controversial question ...

Moating: What have people discovered (in general)
about this technique over the years?

At another company, I was in a position where
a S/N ratio was critical with CATV circuitry
as was defined by the FCC. Moating did quite
a nice job meeting that criteria versus not
moating. The specific requirement by the FCC
I can't recall, but the moat achieved something
on the order of -10dB to -15dB more than not
moating. Two spins of boards were done for
comparison.

Buuut, a very specific case under very specific
conditions. So I don't think it's a hard fast
rule that has to be followed all the time.

Anyone up for some general comments?

Regards, Doug McKean

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