>I think the answer is that the FCC allows declared >compliant devices to be sold in another unit >WITHOUT testing. This has allowed PCs on the >market with as much as 30dB over Class B limits.
It was my understanding that testing always had to be done for the most common configurations of equipment as it is shipped. If this new PC card is going to be shipped in more than 50% of a given line of products I believe that line needs to pass testing with the PC card. The intent of the standards is to limit testing to configurations within reason. I am guessing that the only reason this PC card has been tested so far is because it is going to be used in a majority of at least one line of products. Based on this the product (a PC I take it) should pass emissions tests with the PC Card, or a different PC Card should be used. I have to say that it is frightening how flippantly some of my colleagues accept that PCs are being released into the market up to 30 dB over the limit. The limits are there for a reason, and it is machines such as these that can interfere with airplanes, hospital equipment and the like. Although it may make your job a little harder some days, I think the next time you are on a plane or having surgery you will be happy that a notebook or a cell phone doesn't cause a failure of those critical systems. Sincerely, Kyle Cross ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall,"
