This is a recap and expansion on my original response on this subject, which clearly didn’t take.
Figures 2 & 3 are about the tabletop set-up, as per my original post and that below from WL. The reference in MIL-STD-461 RE102 about the set-up says, verbatim: “5.17.3.3 Setup. The test setup shall be as follows: a. Maintain a basic test setup for the EUT as shown and described in Figures 1 through 5 and 4.3.8...” Figure 1 shows the required minimum absorber treatment in the test chamber. You don’t get to “pick and choose” the parts of the standard that are applicable. It’s “and”, not “or.” And these figures were all brand new in MIL-STD-462D (1993), and are unchanged since then. To my knowledge, there has been no confusion about this topic since 1993. Ken Javor Phone: (256) 650-5261 ________________________________ From: <rehel...@mmm.com> List-Post: emc-pstc@listserv.ieee.org Date: Mon, 29 Aug 2011 05:16:59 -0500 To: <emc-p...@ieee.org> Subject: Fw: RE102 Vertical Ground Plane > From: > Robert E. Heller/US-Corporate/3M/US > To: > "Steve Ferguson" <ste...@wll.com> > Cc: > emc-p...@ieee.org > Date: > 08/29/2011 05:11 AM > Subject: > Re: RE102 Vertical Ground Plane > > Thanks Steven. that was my take as well. The problem comes in > because the RE-102 procedure references the Figures and a reference > is a reference unless it states that portions of the reference are > to be ignored. If we are allowed to start to "pick and choose" the > parts of the procedures or references that we like or dislike then > there is no sense in writing the procedure. > > Bob Heller > 3M EMC Laboratory, 76-1-01 > St. Paul, MN 55107-1208 > Tel: 651-778-6336 > Fax: 651-778-6252 > ================================= > > From: > "Steve Ferguson" <ste...@wll.com> > To: > <rehel...@mmm.com> > Cc: > "Mike Violette" <mi...@wll.com> > Date: > 08/28/2011 03:26 PM > Subject: > RE102 Vertical Ground Plane > > Bob, > > I reviewed the test configuration MIL-STD-461F figures (Figure 1 and > Figure 2) you mentioned and in my opinion it was not the intent to > imply a vertical ground plane. The figure are carry-overs from > early revisions and the goal was to provide a generic sketch of the > ground plane layout. The vertical portion represents the anechoic > chamber wall (note that there is no RF absorber in the sketch). > Reading the associated text, there is no mention of a vertical plane. > > If a vertical plane were incorporated, the desired effect for the > anechoic material would be negated. I believe that the generic > sketch used in the standard should be used for layout guidance only. > > Please contact me if you want to discuss or need more information. > > Steven G. Ferguson, iNCE > Executive V.P. > Washington Laboratories, Ltd > 7560 Lindbergh Drive > Gaithersburg, MD 20879 > ste...@wll.com\ > V 301-216-1500 x 112 > C 240-401-7177 > F 301-216-1590 > > Please check our website (www.wll.com <www.wll.com> ) for Wl Academy Seminars or > contact me with any questions! > - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>
