First convert the limit in Volts to micro Volts, then simply take the log of that number and multiply by 20.
Example: 1) to convert 1 Volt into dBuV 2) 1 Volt = 1,000,000uV 3) 20log 1,000,000 = 120dBuV To convert dBuv into Volts just work backwards. Divide 120(dBuV) by 20 (= 6) and take the antilog of that ( = 1Volt). Bill William M Stumpf DLS Electronics 166 South Carter St. Genoa City WI 53128 ph: 262-279-0210 fx: 262-279-3630 email: [email protected] From: Kim Boll Jensen [mailto:[email protected]] Sent: Thursday, February 12, 2004 5:13 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 Tlf.: 48 18 35 66 Fax: 48 18 35 30 Mobil: 22 99 69 91 E-mail: [email protected] web: www.bolls.dk 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
