That's a great solution Ken. BTW, do those white cardboard pyramids absorb much RF?
Our old 3m chamber uses the blue foam pyramids only and four 60W ceiling lights; fairly dark inside on a good day. And, the pyramids are held to ceiling and walls with Velcro which doesn't really hold very well. Ralph McDiarmid Product Compliance Engineering Solar Business Schneider Electric -----Original Message----- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Wednesday, November 22, 2017 8:28 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Use of LED Spots in EMC Chambers [General Use] One really excellent installation relied on the fact that the chamber was ferrite tile-lined with an overlay of the white cardboard pyramids. Thus didn't need nearly as much light as ferrite tiles alone or blue cones. LEDs were outside the chamber, placed in the end of a plastic light pipe, which in turn penetrated into the chamber through a waveguide-beyond-cutoff pipe. All wiring and all noise outside the chamber. Brilliant white light within. Ken Javor Phone: (256) 650-5261 > From: "Price, Andrew (Leonardo, UK)" > <andrew.p.pr...@leonardocompany.com> > Reply-To: "Price, Andrew (Leonardo, UK)" > <andrew.p.pr...@leonardocompany.com> > Date: Wed, 22 Nov 2017 12:00:46 +0000 > To: <EMC-PSTC@LISTSERV.IEEE.ORG> > Conversation: Use of LED Spots in EMC Chambers [General Use] > Subject: [PSES] Use of LED Spots in EMC Chambers [General Use] > > Hi all. > > Has anyone had experience with using LED Spot lamps in EMC Chambers? > What types/manufacturers would be recommended? > > Would appreciate help in trying to solve someone's problems with noise > during radiated emissions. > Test Facility has just had all their chambers converted to LED Spots > and they are suffering broadband noise issues. > > Regards > Andy > > > > > Andrew Price > Land & Naval Defence Electronics Division > Prinicpal Environmental Engineer (EMC) > > Leonardo MW Ltd > Sigma House, Christopher Martin Rd, Basildon SS14 3EL, UK > Tel EMC LAB : +44 (0)1268 883308 > Mobile: +44 (0)7507 854888 > > andrew.p.pr...@leonardocompany.com<mailto:andrew.p.pr...@leonardocompany.com> > leonardocomapany.com > HELICOPTERS / AERONAUTICS / ELECTRONICS, DEFENCE AND SECURITY SYSTEMS > / SPACE > > * Please consider the environment before printing this email. > > > > > ******************************************************************** > This email and any attachments are confidential to the intended > recipient and may also be privileged. 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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 email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________ - ---------------------------------------------------------------- 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>
