Chas, I solved that issue working on the presentation to the RMCEMC chapter meeting I never attended. I am sending the derivation to you as an attachment, off-list.
Ken > From: "Charles Grasso" <[email protected]> > Date: Mon, 7 Jul 2003 20:58:32 -0700 > To: "Ken Javor" <[email protected]>, "Emc-Pstc" <[email protected]>, > <[email protected]> > Subject: RE: cable maximization - do you or don't you?? > > Hi Ken, > > Ahh the emissions analogy to the immunity tests? Hey - why not? > After all there are plenty of conditions that arise NOT as an > EUT problem but rather the artifical test environment that > we use - i.e the OATS. We could then properly use a CALC > without worrying about the cable radiation per se. > > Otts equation (derived from Banalis) is pretty accurate to > half a wave length - the trick is what do you do after that? > (Actually we have developed a correction factor here at > Echostar..stay tuned..) > > -----Original Message----- > From: [email protected] > [mailto:[email protected]]On Behalf Of Ken Javor > Sent: Monday, July 07, 2003 8:29 AM > To: Charles Grasso; Emc-Pstc; [email protected] > Subject: Re: cable maximization - do you or don't you?? > > > > An excellent opportunity to ask a question of list members, especially those > involved in standards writing. > > Why not calculate the cable conducted emission that would result in radiated > spec level compliance, and levy a cable conducted emission requirement? > > Then OATS testing would not require cable manipulation, and any out of spec > conditions would result from test sample enclosure emissions. > >> From: "Charles Grasso" <[email protected]> >> Reply-To: "Charles Grasso" <[email protected]> >> Date: Sun, 6 Jul 2003 13:53:40 -0700 >> To: "Emc-Pstc" <[email protected]>, <[email protected]> >> Subject: cable maximization - do you or don't you?? >> >> >> Hi all, >> >> I have recently run into an issue with an OEM >> supplier. The product that we are looking at >> fails emissions after cable maximization. >> In an informal study, I discovered that quite >> a few labs don't seem to perform cable maximization >> on a routine basis. ANSIC63 is quite clear on this >> - the cables need to be maximized. >> >> Is cable maximization a thing of the past - to >> be written out - and test labs are maximizing >> throughput rather than cables OR is is something >> I should continue to insist on?? >> >> Comments will be gratefully accepted. >> Charles Grasso >> EchoStar Communicationa >> >> ------------------------------------------- >> This message is from the IEEE EMC Society Product Safety >> Technical Committee emc-pstc discussion list. >> >> Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ >> >> 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] >> >> Archive is being moved, we will announce when it is back on-line. >> 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.ewh.ieee.org/soc/emcs/pstc/ > > 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] > > Archive is being moved, we will announce when it is back on-line. > 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.ewh.ieee.org/soc/emcs/pstc/ 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] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
