I read in !emc-pstc that Hare, Paul <ph...@pirus.com> wrote (in <200108162322.f7gnm8304...@gemini2.ieee.org>) about 'FCC rule interpretation (add'l info)', on Thu, 16 Aug 2001: > As a side note, I've seen an FCC application where the second harmonic of > the device was measured and reported to be at the limit (i.e. 54 dBuV/m). > Since the second harmonic was the closest to the limit, > the transmitter's power had been increased to a point at which there was > zero margin (questionable philosophy considering manufacturing > variabilities, I know). The limit is the limit, right?? Unfortunately, > 54 > dBuV/m is technically greater than 500 uV/m and the FCC wouldn't certify > the > device.
A situation that discredits both parties. Squeezing up to an EMC limit is highly unwise, but 54 dB(uV/m) is 501.1872366... uV/m. Can we assume that the FCC can measure that precisely? In Europe, the limits are specified in dB(uV/m), but no-one has been daft enough to propose limits like 53.9790009... dB(uV/m). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
