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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 states that it
can definitely help. What is the opinion of conformity (SI) members and what
empirical results have been obtained?
Second question. A well-known EMI speaker/author also states that spread
spectrum clocking (SSC) does not lower peak radiated emissions. Rather the
harmonics of SSC are spread out where the Quasi Peak Detector Spectrum
Analyzer (QPDSA) is missing (incorrect frequency band) their peak value
readings, i.e. fpeak is outside the frequency band that SPDSA is set for
monitoring.
Thanks.
Robert Hanson
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