I didn't know what the 20 H rule was either, just assumed everyone else
did...
From: John Woodgate j...@jmwa.demon.co.uk
Date: Sun, 27 Nov 2005 18:49:13 +
To: emc-p...@ieee.org
Subject: Re: Suppression of radiated emissions and spread spectrum clocking
americo...@aol.com wrote (in
americo...@aol.com wrote (in 26c.a77014.30bb4...@aol.com) about
'Suppression of radiated emissions and spread spectrum clocking', on
Sun, 27 Nov 2005:
Conformity and SI List
I attended an electronic conference where a well-known EMI/EMC
speaker/author stated that the 20 H rule is useless for
Reply to second question only.
In a limited sense it is correct that a spread spectrum clock doesn't decrease
emissions, it spreads them out (in the frequency domain). The spread spectrum
clock decreases the amount of time a signal is within the pass-band of the
receiver, making it appear a
This is a multi-part message in MIME format.
Conformity and SI List
I attended an electronic conference where a well-known EMI/EMC speaker/author
stated that the 20 H rule is useless for suppression of radiated emissions.
On the other hand, another well known EMI/EMC speaker/author
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