In message <a3772c119941df41977965de844184d8ecc...@telefic.telefication.com>, Willem Jan Jong <wjj...@telefication.com> writes >Class A indeed applies for products meant for the general public. Class >B products are meant for industrial users (e.g. telecom providers) >operated by occupational workers.
Surely it's the other way round. Class A is 'industrial', excluding 'light industry', which requires Class B, along with 'commercial' and 'residential'. You just might be able to get a Notified Body to agree that no radio or TV receiver is likely to be within 10 m of your product, and thus Class A could be permitted. At some point, these classes will have to be revisited, because many Class A products have found their way into homes, with no obvious adverse consequences. Furthermore, some spectrum management authorities in Europe now regard the LF and MF broadcast bands as 'unprotectable' because of the general level of 'EMC smog', quite a lot being contributed by large numbers of Class B-compliant products. In addition, because the emission limits are based on separations of 3 m, 10 m or 30 m, there is no protection against a receiver being interfered with by a small SMPS only 30 cm away, maybe even its own power supply! -- John Woodgate - 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
