Hi All, you know I cant resist weighing in... A few weeks ago I asked for the data supporting the inclusion of phase measurements in LISN calibrations/verifications. Other than being told data was presented at a CISPR meeting, none was forthcoming.
Until proven otherwise, I would venture to say this is another academic exercise to increase the visibility of and press for, MU in testing. In reality, it costs money, time, increases chances of errors and returns nothing in the product quality. So, how does this get reversed OUT of CISPR requirements? My 20 cents worth, Sincerely, Derek Walton From: Kunde, Brian <[email protected]> To: [email protected] Sent: Mon, Aug 23, 2010 9:06 am Subject: RE: [PSES] LISN phase characteristic? I’m struggling, too. It would appear as though you cannot correct for phase angle variations in your LISN; it only affects your measurement uncertainty calculations. Phase angle would not be factored in to your test results or your correction factors. If your LISN is bad or going bad, it should show up during the attenuation and impedance test. Am I understanding this correctly? The Other Brian ________________________________ From: [email protected] [mailto:[email protected] <mailto:[email protected]?> ] On Behalf Of [email protected] Sent: Friday, August 20, 2010 3:17 PM To: [email protected] Subject: Re: [PSES] LISN phase characteristic? I'm trying, but failing to understand why phase would be important for a LISN or for any other transducer used during EMC evaluation. Don't EMC receivers report received signals as a scalar value? _____________________________________________________________________________________ Ralph McDiarmid | Schneider Electric | Renewable Energies Business | CANADA | Regulatory Engineer From: John Woodgate <[email protected]> To: [email protected] List-Post: [email protected] List-Post: [email protected] List-Post: [email protected] Date: 08/19/2010 09:34 AM Subject: Re: [PSES] LISN phase characteristic? ________________________________ In message <of480480bf.64652f9c-on88257784.00585b52-88257784.0058c...@slpower.com>, dated Thu, 19 Aug 2010, [email protected] writes: >In a recent posting, someone mentioned that CISPR/A may consider adding >phase characteristics (?) to LISN specifications. Does anyone have >more information on this issue? Already in CISPR 16-1-2:2004 plus amendments 1 and 2. Added by Amendment 2. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK If at first you don't succeed, delegate. But I support unbloated email http://www.asciiribbon.org/ <http://www.asciiribbon.org/> - 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 <http://www.ieeecommunities.org/emc-pstc> Graphics (in well-used formats), large files, etc. can be posted to that URL. 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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]>
