Greetings members, Can anyone shed any light on what ANSI defines as the max distance/limit of a 'co-located' piece of ancillary equipment or other support equipment (on the table) to the main EUT being tested for FCC Part 15 class B for 'unintentional radiators'. I seem to recall 20 cm but I think this was referring to 'intentional' radiators.
Is there a similar requirement in the EMC directive and/or EN/CISPR standards? Or is this really dictated on your recommended set-up? Shall that device be removed from the test bed if typical installation indicates that it will be greater than 20cm from the main EUT? I believe that the set-up in ANSI only showed the PC, printer, mouse, keyboard & monitor but that's it. There are so many other/different electronic devices that connect to a laptop/PC/other, etc. (i.e. smart phone) these days, it is not viable for anyone to test all devices/configurations. I understand that one must use good judgment and exercise due diligence but there must be a limit. Agree? Some of these electronic devices state compliance to Class B, it may still have interference with another closely co-located device because they did not test it fully to the myriad of other electronic devices out there that it could be connected to. There is no guarantee per se. Can anyone comment? Thanks in advance. Regan - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
