About this clause D: Annex D Arrangement of EUT, local AE and associated cabling ... Arrangements such as placing AE below the RGP or placing AE outside the measurement area when it is normally located distant from the EUT may be used to limit the effects of adverse AE emissions or to reduce measurement time, as long as the arrangement can be shown not to reduce the emissions measured from the EUT.
For this demonstration to happen one should measure EUT emissions first without AE ........ may I suggest measuring EUT as a standalone device first before adding a AE to mess up with the spectrum ? Gert Gremmen -----Oorspronkelijk bericht----- Van: T.Sato [mailto:vef00...@nifty.com] Verzonden: dinsdag 9 mei 2017 12:23 Aan: EMC-PSTC@LISTSERV.IEEE.ORG Onderwerp: Re: [PSES] EN55032 host equipment... On Mon, 8 May 2017 22:32:38 +0000, Matthew Wilson <matthew.wil...@gbelectronics.com> wrote: > In regards testing, for example's sake, a printer with a RS232 serial port under EN55032 for EMC, where does the host 'laptop' PC to generate the RS232 signals (most likely via a USB-RS232 adapter from the laptop's USB port) get located in the test setup? > > Inside the test chamber, where you might end up testing the performance of the laptop? Or outside the chamber via an 'extension lead' through a suitable aperture in the chamber on the RS232 line (and probably loaded with a set of ferrites to attenuate any external signals)? > > EN55032 does seem to conflict itself without a clear answer between #3.1.5 and #6.2... > > I'd rather check only the example printer device for EMC, which is the > EUT of interest, rather than anyone else's laptop :-) The standard permit to reduce emission from AEs by mitigation measures in certain conditions, although it may not easy to demonstrate that the mitigation measures will not reduce the emission from the EUT. 10 Compliance with this publication ... If the AE is known to cause significant emissions, these emissions may be reduced by mitigation measures, as long as these measures do not reduce the emissions from the EUT. The preferred configuration is that the AE is removed from the measurement area, as allowed by D.1 Annex D Arrangement of EUT, local AE and associated cabling ... Arrangements such as placing AE below the RGP or placing AE outside the measurement area when it is normally located distant from the EUT may be used to limit the effects of adverse AE emissions or to reduce measurement time, as long as the arrangement can be shown not to reduce the emissions measured from the EUT. 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>
