It's probably not an issue for most folks, but don't trust anything with a dielectric constant much above that of expanded polystyrene above 1GHz. Having been burned before. I would suggest checking the characteristics of anything you buy for rotational uniformity. You need either a simple 1/4 wave vertical comb generator, or an isotropic field sensor. Check either the received field from the comb generator (or emissions) or the field seen by the sensor (for immunity) every 10 degrees or so of turntable rotation. I have data from a dry plywood table with a laminate surface that indicates more that 8dB variation across the corners of the table at 1GHz.
Regards, Brent DeWitt Datex-Ohmeda Louisville, CO brian_ku...@leco.com@majordomo.ieee.org on 07/02/2002 08:19:23 AM Please respond to brian_ku...@leco.com Sent by: owner-emc-p...@majordomo.ieee.org To: emc-p...@ieee.org cc: Subject: Re[2]: Non-metallic tables. Gary, If cost is not a big factor, try contacting Sunol in California. The contact I have is Dale Guthery at (925) 485-9260 (but I haven't talked to them in several years). I know a few years ago the were selling EMC test tables based on a design of ours which had wheels that could be easily removed once you rolled the table into place. I understood they were expensive but very nice tables. Brian Kunde LECO ____________________Reply Separator____________________ Subject: Re: Non-metallic tables. Author: nick.willi...@conformance.co.uk List-Post: emc-pstc@listserv.ieee.org Date: 7/2/02 9:50 AM Gary, I may be missing the point, but my thoughts are drawn to roto-moulded patio furniture of the kind one can purchase in DIY and other major chain stores..... Rgds Nick. At 10:06 -0700 1/7/02, Gary McInturff wrote: > I am looking for a non-metallic table I can put equipment on >for pre-pre-compliance checks. Was thinking of Rubbermaid Corp or >the likes, but first blush says they don't have anything >sufficiently close. > Anybody our there buy rather than make the chamber test tables? > Gary > ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
