In message <d0e4437f.67889%[email protected]>, dated Tue, 20
Jan 2015, Ken Javor <[email protected]> writes:
The same 5 uH LISN was used to evaluate conducted emission limits for
office equipment leading up to the imposition of CE/RE requirements on
non-antenna connected automatic data processing and office equipment in
47 CFR Part 15 back around 1980.
The 50 uH LISN (to which Doug must be referring) was an attempt to keep
the impedance closer to 50 Ohms over the range of the requirement,
which at the time was 530 kHz to 30 MHz.
Thai may well be so in USA, but the LISN has been in CISPR standards for
many more years.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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