Amund, This approach typically includes a set of design and/or installation guidelines and engineering justification as needed to establish a presumption of conformity with the Directive for the untested combinations. The "reasonable number" of tests, the number of full tests, the number of partial tests, and the particular guidelines are case-by-case and subject to discussion with and approval by the NB.
Best Regards, Mike -----Original Message----- From: Amund Westin [mailto:am...@westin-emission.no] Sent: Thursday, March 21, 2013 12:53 AM To: Heckrotte, Michael; EMC-PSTC@LISTSERV.IEEE.ORG Subject: SV: [PSES] SV: [PSES] RTTE - Radio product or not Mike I see that approach. Radio tests on one combination of A+B is approximate $10.000. So doing a reasonable number of combinations will be very costly. And we can run into problems that is caused by Item B's, which are made from other manufacturers ... But we have done a successful test on Item A + B previously. We could measured the IF spectra on output port (coax cable) of old Item A model, and compared it with similar measurements (harmonics, spurious, freq. drift, etc) on the new Item A model. Then should at least the input signals to Item B be in the same range. #Amund -----Opprinnelig melding----- Fra: Heckrotte, Michael [mailto:michael.heckro...@ul.com] Sendt: 20. mars 2013 17:07 Til: EMC-PSTC@LISTSERV.IEEE.ORG Emne: Re: [PSES] SV: [PSES] RTTE - Radio product or not Amund, Regarding your second paragraph, a cost-effective approach is to develop a Test Plan that specifies tests on a reasonable number of combinations, submit it to a Notified Body for review, then get the Notified Body Expert Opinion based on that plan and the test results. Best Regards, Mike -----Original Message----- From: Amund Westin [mailto:am...@westin-emission.no] Sent: Wednesday, March 20, 2013 1:44 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] SV: [PSES] RTTE - Radio product or not Thanks! I see the 'intended function' ... Agree that Item A should be handled as a radio product. But it will be hard to make compliance to radio standards since the product Item, A is only a part of a total radio systems. Radio parameters according to ETSI / EN standards will not be able to check before a complete systems (Item A + B) is running. These parameters will not be able to check before the complete system is running. Let me just comment that Item A is made by a single manufacturer and Item B is made by manufacturer B and there are many possible Item B's on the market. Testing out all possible configurations of Itema A + Item B is considered unacceptable, since it will cover 95% of configurations which never will be used and it would also cost a huge amount of $$. Thanks. #Amund -----Opprinnelig melding----- Fra: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sendt: 19. mars 2013 20:42 Til: EMC-PSTC@LISTSERV.IEEE.ORG Emne: Re: [PSES] RTTE - Radio product or not In message <3f0347ac6ed9504191f91f07629fbb0c01540...@thhsle14mbx2.hslive.net>, dated Tue, 19 Mar 2013, Charlie Blackham <char...@sulisconsultants.com> writes: > >Product B isn’t a radio without product A attached, therefore product A >is part of a radio system and the R&TTE Directive applies. I would tentatively agree: in CENELEC long ago, the question was (half seriously) raised as to whether a washing machine with a microprocessor was a household appliance or ITE. The answer was that the 'intended function' is definitive. I think this can be extended to products like A and B, which are not intended to work alone but are components of a system. The 'intended function' of the system is a radio, so the component parts are 'radio'. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk SHOCK HORROR! Dinosaur-like DNA found in chicken and turkey meals John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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