Levels are 1, 3, and 10 V/m, but that is unmodulated. The required modulation scheme (80% AM) adds a requirement for an extra 5 dB of headroom, so that if the EUT responds to the peak of the modulation waveform (as most electronic circuits do) the field intensities are effectively 1.8, 5.4, and 18 V/m.
---------- >From: alan.hud...@amsjv.com >To: emc-p...@majordomo.ieee.org >Subject: Immunity severity levels >Date: Wed, Sep 18, 2002, 12:14 PM > > > > With regard to radiated emission immunity and EN61000-4-3 (or IEC 801-3) > I believe there are different field strengths used, depending on the > environment in which the apparatus being tested is to be used. > > I believe equipment to be used in a well-protected environment may be > tested at a lower immunity level than equipment to be used in an > unprotected environment. > > I've ordered a copy of 61000-4-3, but while I'm waiting I'd like to know > ASAP: > > 1) What are the definitions of the levels? > 2) What field strengths are used for the various levels? (I think level > 2 is 3V/m and level 3 is 10V/m) > > Regards, > > Alan > > > ------------------------------------------- > 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: > Ron Pickard: emc-p...@hypercom.com > Dave Heald: davehe...@attbi.com > > 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://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > ------------------------------------------- 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com 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://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
