>-----Original Message----- >From: Kim Boll Jensen [mailto:[email protected]] >Sent: Thursday, February 12, 2004 3:13 AM >To: EMC PSTC >Subject: EN 55020 RF test > > > >Hi all > >In EN 55020 immunity to RF e.m. fields it is noted in 5.8.4 >that for big >equipment not fitting in the TEM, test as per EN 61000-4-3 is >permitted. > >My problem is that immunity test levels in EN 55020 is in >dB(uV/m) and EN >61000-4-3 is in v/m. How do I convert ? > >Best regards, > >Kim Boll Jensen >Bolls Rådgivning >Ved Gadekæret 11F >DK-3660 Stenløse
Kim: For V/M to dBuV/M: Multiply V/M time 1,000,000 Then take the Log (base 10) Then multiply times 20 Example: 15 V/M 15,000,000 uV/M 7.176 143.5 dBuV/M For dBuV/M to V/M: Divide dBuV/M by 20 Then take the antilog Then divide by 1,000,000 Example: 148 dBuV/M 7.4 25118864 uV/M 25.1 V/M Ed Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty 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
