Re: So is a product classified by what it is or by how it performs for EMC Testing?
The silly answer is 'yes'. If it satisfies two different criteria, that's a fact and there is no compelling reason to suppress one of them. But the actual wording does give a bias. If something is in Group 2, it is not Group 1 by definition. If something meets Class B limits, it is Class B by definition. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England We live in exiting times -----Original Message----- From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Monday, June 27, 2016 2:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FCC Part 15 vs 18 John, You are right, as always, regarding the requirements. With the additional clarification provided by you and Brian in a later email, I can see where Part 18 would be similar to CISPR11 Group 2. So is a product classified by what it is or by how it performs for EMC Testing? Example, if our Class A Group 2 product (by definition) meets the emissions requirements of Class A Group 1, can we claim it as a Group 1 instrument or is it always Group 2 if it meets the definition of Group 2? Another example which comes up often. A Class-A device (which would never be used in Residential Environment) but meets the Class-B emissions requirements; can you claim this as a Class-B device in the Manual? So is the Class-A/Class-B distinction determined by what the product is and how it is used, marketed, and sold, OR by how it performed during EMC testing? Thanks, The Other Brian -----Original Message----- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Friday, June 24, 2016 5:39 PM To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] FCC Part 15 vs 18 How different are the requirements? Can you economically comply with both, so you can stop worrying? With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England We live in exiting times -----Original Message----- From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Friday, June 24, 2016 10:15 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] FCC Part 15 vs 18 This has always confused me. My company makes Laboratory Equipment (Analytical Test Equipment) which we have always categorized as ISM Equipment (Industrial, Scientific, Medical). But both FCC Part 15 and 18 references ISM equipment. By nature of what our products are or the category of product they are, would it be correct to say they fall under FCC Part 18?? Or, to fall under FCC Part 18, does our products have to intentionally generate and use RF directly in its function (such as CISPR11 Group 2)? Do you have to use the ISM frequencies to be part 18? Now, CISPR11 is for ISM products, but Group 2 is used only on products where RF is used as part of its function to test a sample. But Group 1 products are still ISM products even if it does not intentionally generate RF of any kind. To add to my confusion, looking at other test equipment in our EMC lab, some have FCC statements in the manual for Part 15, others for part 18. Yet I cannot distinguish a clear reason for one or the other. So for the FCC, how do you draw the line between Part 15 and Part 18 for ISM Equipment? Thanks to all. The Other Brian ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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Thank you. - ---------------------------------------------------------------- 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> - ---------------------------------------------------------------- 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>
