I read in !emc-pstc that Pommerenke, David <[email protected]> wrote (in <[email protected]>) about 'EMC test table construction plans', on Thu, 1 Nov 2001: >For emissions and immunity you should not use any wood in the table. It will >significantly (+/-2 dB up to 1 GHz for emissions , more above, +/-10 dB for >immunity up to 1 GHz) change the test result. My experience has shown that >Styrofoam is basicly the best material.
You mean that it gives the worst-case results? >There are a couple of published >papers on this issue. As surface material the following worked out fine: > > - Foamed PVC (rather stiff, low dielectric constant due to the foamed >nature), maybe 4 mm thick. > > - PE sheet, maybe 2 mm thick. Should the test conditions not reflect the actual environment in use of the product, rather than employ these unusual materials? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
