Stuart, It depends on the regulatory body you are dealing with and whether this is a class B product or not. The note in CISPR 22 that allows testing at alternate distances applies only to class B products. BSMI in Taiwan is adamant about wanting 10 meter data. The limits would be about 10 dB higher (1/R) at 3 meters.
Keep in mind that 1/R doesn't work well between 3 and 10 meters with most products and that a product that passes at 3 meters may very well fail at 10 meters. There is a risk associated with testing at the closer distance. Ghery Pettit Intel Corporation -----Original Message----- From: Stuart Lopata [mailto:stu...@timcoengr.com] Sent: Tuesday, October 30, 2001 7:07 AM To: emc Subject: EN 55022 limits The radiated limits are stated for 10 meters but our measurements are at 3 meters. Is it ok to use 3 meter data and what should the new limits be (may be 10 dB higher)? Thanks, Stuart Lopata ------------------------------------------- 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: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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: No longer online until our new server is brought online and the old messages are imported into the new server. ------------------------------------------- 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: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net 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: No longer online until our new server is brought online and the old messages are imported into the new server.
