At least in MIL-STD-461 and RTCA/DO-160 of which I have personal knowledge, the EUT must be bonded to the ground plane in the same manner it would in its intended installation. I assume other standards do likewise, but the point is that any sort of LISN provides a standard source impedance specifically based on a controlled bonding impedance (NTE) whereas the test sample performance depends on its specific grounding/boning configuration, which the test set-up must replicate to the maximum extent possible.
Ken Javor Phone: (256) 650-5261 > From: John Woodgate <j...@jmwa.demon.co.uk> > Reply-To: John Woodgate <j...@jmwa.demon.co.uk> > Date: Fri, 13 Mar 2015 14:47:28 +0000 > To: <EMC-PSTC@LISTSERV.IEEE.ORG> > Subject: Re: [PSES] LISN Bonding to Ground Plane for CEMI Testing per ANSI > C63.4 > > In message <d1285ee5.69ff8%ken.ja...@emccompliance.com>, dated Fri, 13 > Mar 2015, Ken Javor <ken.ja...@emccompliance.com> writes: > >> A ground plane made of copper, brass or aluminum of any extent (width >> as well as length) will have microohms of resistance > > I wonder if that's always true when you take into account the contact > between the EUT and the ground plane, not just the ground plane itself. > -- > OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk > When I turn my back on the sun, it's to look for a rainbow > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > > - > ---------------------------------------------------------------- > 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://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org> > 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://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
