On Fri, 27 May 2016 22:15:16 +0000 (UTC), MARINA PEYZNER <epeyz...@sbcglobal.net> wrote:
> Yes, sure - 60601-1-2. > So, place antenna at 3 (or 1) m and create field according to Table 9. Right? > But why the Table gives 0.3 m distance? > If I have to eliminate a small area or the EUT is pretty small - may I use > 0.3 m distance? 30 cm is the assumed minimum separation distance between the equipment and radio transmitters in the real world, which was used to derive the proposed test levels in the Table 9. IEC 61000-4-3, and note in IEC 60601-1-2 Table 9, says that the test distance may be reduced down to 1 m. To fully comply with those standards, minimum test distance is 1 m. I think it questionable whether application of IEC 61000-4-3 test method is suitable in this case, as the test is intended to simulate close proximity of radio transmitters. However, it is the requirement of the standard. Regarding to the assumed minimum separate distance of 30 cm, if closer distance may be reasonably foreseeable in actual use, smaller separate distance hence higher electromagnetic field levels (i.e. test levels) may need to be assumed. Regards, Tom -- Tomonori Sato <vef00...@nifty.com> URL: http://t-sato.in.coocan.jp > On Friday, May 27, 2016 2:59 PM, T.Sato <vef00...@nifty.com> wrote: > > > On Fri, 27 May 2016 21:37:01 +0000, > MARINA PEYZNER <epeyz...@sbcglobal.net> wrote: > >> I am confused with Note below the Table 9 in IEC 61000-1-2 Ed. 4 standard. >> I am under impression that we have to create Immunity test levels given in >> this Table with placing antenna at a distance of 0.3 m but this is in >> contrary with this Note. >> So, what should be the distance between antenna and EUT ? > > Maybe do you mean IEC 60601-1-2? > > Anyway, in IEC 61000-4-3 in general, prefered distance is 3 m but > the distance may be reduced down to 1 m. > Unless otherwise specified, the requirement will be applied to standards > which use IEC 61000-4-3 test method. > > Regards, > Tom > > -- > Tomonori Sato <vef00...@nifty.com> > URL: http://t-sato.in.coocan.jp/ > > - > ---------------------------------------------------------------- > 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>
