Any frequency domain test is performed in the frequency domain because it protects a frequency domain victim. If you have tunable victims (i.e., radios) below 30 MHz, then you need to make measurements to protect them. In the commercial world, conducted emission requirements from 150 kHz - 30 MHz suffice to protect radios that operate there. if you happened to have a radio connected to a whip-type antenna operating 0.15-30 MHz, the MIL-STD-461 RE102 limit protects that radio in that band. If you have radios that reach lower still, such as sub-150 kHz LORAN receivers, or Navy VLF receivers operating between 14-30 kHz, then both RE102 (whip-type antenna - electric field coupling) and RE101 (magnetic coupling) can be used to characterize emissions that might cause rfi.
> From: "Valentyik, Peter I \(MED\)" <[email protected]> > Reply-To: "Valentyik, Peter I \(MED\)" <[email protected]> > Date: Wed, 12 May 2004 10:15:35 -0500 > To: <[email protected]> > Subject: Mil-Std-462D & EN55011 > > > We recently received compliance certification for a medical device from an > accredited test lab for EN55011. The requirements are to test the device for > radiated electromagnetic emissions at high frequencies. We have had requests > as to why the Mil-Std-462, RE101 was not tested. The Mil-Std applies > requirements at low frequency from 30Hz up to 30Khz. Does anyone have > suggested rationale to why we should be able to justify that testing to > EN55011 is sufficient and that testing to the Mil-Std is not a requirement > anymore? From my understanding, it may only apply to pulmonary type medical > devices. Any input is appreciated. > > Thanks > Peter Valentyik. > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ieee-pses.org/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
