Ed, I agree, and I've verified that with the LISN(s) I use there is no impact; however, ANSI C63.4, E1, b) states that unless it can be shown that the RF filters do not impact the impedance then you must perform the verification with the RF filters in circuit.
Really it's a case for either performing the verification in house OR sending the RF filters with the LISN out as part of the calibration (at least once). I know some facility RF line filters are not easily removed! Regards, Dave Spencer EMC Engineer Xerox Corp. From: [email protected] [mailto:[email protected]] On Behalf Of Price, Edward Sent: Tuesday, January 27, 2009 1:04 PM To: [email protected] Subject: RE: Calibration Standards for LISN But isn't it the purpose of the AMN to present an impedance to the EUT which is unaffected by whatever unknown impedance exists at the source of the power? Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 Military & Avionics EMC Is Our Specialty - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
