Firstly thanks for the replies re the Laplace Instruments Analyser - it looks good value for the price. Now, we have here a Seaward 'Screened Room', about ten years old, which is basically a 'tent' of metallised fabric draped over a metal framework, with a metal floor. It was sold for emc work, has a solid-looking door, plus a filtered mains inlet. Its about 5m x 3m x 3m, and I'd like to use it to provide confidence that designs are well within emissions limits, rather than try to justify things close to a limit. Its literature of the time claimed 60dB to 80dB attenuation. But... it doesn't seem to offer much attenuation to FM radio signals! It's only ground is via the mains inlet, i.e. not much of an rf ground. Otherwise it's just sat on the factory floor. I have a building girder very close by emerging from the floor - should I ground the room to that? This might bring a smile to those lucky people out there with state of the art anechoic chambers, but I have to use what I can! Any thoughts? Regards, Jeff Chambers
Jeff Chambers Engineering Manager System Technologies Morecambe Road Ulverston, Cumbria LA12 9RN www.SystemTechnologies.com - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
