The issue of waiting to get the peak field intensity could be shortened by spinning the paddles at a higher speed. However, I wouldn't want to be inside a metal chamber with a 4'x8' metal plate spinning at 300 RPM. Sounds like an Edgar Allen Poe story -- 'The Plate In The Reverb Chamber'.
Thanks to all who replied. This is a corner of EMC testing I've never been involved with. If EMC is called black magic by some, mode-tuned/stirred/stepped chambers sound like black magic^2. Pat On Mon, Apr 29, 2013 at 9:23 AM, Luke Turnbull <[email protected]>wrote: > Hi all,**** > > ** ** > > Our experience is that you get pretty much the same levels with either a > reverberation chamber, or with high gain antennas in a regular anechoic > chamber. It is possible to increase the antenna gain by 3 or 4 dB compared > to “traditional methods”, and get up to the same levels achieved in a > reverberation chamber. Our methods achieve a minimum 3000 V/m, 1-18 GHz in > a regular anechoic chamber.**** > > ** ** > > Luke Turnbull**** > > ** ** > > Dr Luke Turnbull > EMC Technical Manager > TRW Conekt > Stratford Road > Solihull > West Midlands B90 4GW**** > > United Kingdom > > Tel: +44 (0)121.627.3966 > > email: [email protected] > web: www.conekt.co.uk**** > > ** ** > > *From:* [email protected] [mailto:[email protected]] *On Behalf Of *Ed > Price > *Sent:* 28 April 2013 17:53 > *To:* [email protected] > *Subject:* RE: [PSES] Mode-stirred, Mode-tuned, Reverb - what's the > difference?**** > > ** ** > > <snip>**** > > ** ** > > You can take advantage of the multiple reflections in a chamber (actually > enhancing the reflections through the use of the moving mechanical > structures) to achieve higher E-fields. This allows you to get higher > E-fields for a test like RS103 than you could get using traditional > methods. **** > > * * > > <snip>**** > > * * > > *Ed Price* > > *WB6WSN* > > *Chula Vista, CA USA* > > ** ** > > *From:* Pat Lawler [mailto:[email protected] <[email protected]>] > > *Sent:* Sunday, April 28, 2013 7:38 AM > *To:* [email protected] > *Subject:* [PSES] Mode-stirred, Mode-tuned, Reverb - what's the > difference?**** > > ** ** > > All,**** > > ** ** > > Over the years, I've come across pictures of test chambers with > descriptions such as mode-stirred, mode-turned, and reverberation. They > seem to look similar, with metal walls and rotating metal paddles.**** > > ** ** > > Do these names reference the same basic design, or are they different > animals? Which ones are used for which type of RF immunity test?**** > > ** ** > > Thanks,**** > > Pat Lawler**** > > Teset engineer**** > > ** ** > > - > ----------------------------------------------------------------**** > > 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 < > [email protected]>**** > > 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://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 <[email protected]> > Mike Cantwell <[email protected]> **** > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> **** > > - > ----------------------------------------------------------------**** > > 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 < > [email protected]>**** > > 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://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 <[email protected]> > Mike Cantwell <[email protected]> **** > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> **** > - > ---------------------------------------------------------------- > > 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 < > [email protected]> > > 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://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 <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > - ---------------------------------------------------------------- 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 <[email protected]> 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://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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
