Thanks, Michael Let's say a 3G module according to ETSI EN301 511. The module is tested stand-alone and fulfills the specs. Then build into the final product and re-tested. How can the final product fail according to ETSI EN301 511, when the module itself complies? I can see to possibilities: - The final product has another type of antenna compared to antenna used during module stand-alone testing - Conducted and radiated emission from the aux. equipment in the final product are coupled into the radio module itself and generates unwanted spurious in the 3G signal.
Could it be other reasons, which justifies re-testing on the final product? "Amund -----Opprinnelig melding----- Fra: Michael Derby [mailto:micha...@acbcert.com] Sendt: 11. mai 2015 13:10 Til: EMC-PSTC@LISTSERV.IEEE.ORG Emne: Re: [PSES] Integrating radio COSTs into other equipment Hello Amund, This is a general reply about installing CE Marked radio modules into host products...... The important thing to remember is that there no certification process under the R&TTE Directive and also no "modular approvals". Anyone installing the module into a product becomes responsible for the compliance of the overall product, with the R&TTE Directive. Radio, EMC, Safety. It's possible to imagine cases where the test results for the radio performance (made by the module manufacturer, on the module) could be used to show compliance of the overall final product. For example, if the module is installed ok in accordance with manufacturer's instructions, you could imagine that the power, frequency, etc., should not be changed. Many module installers rely on most of the tests in the radio test report of the module for their compliance to Article 3.2 of the R&TTE Directive. For radiated emissions of the transmitter module (also Article 3.2) in the final product, I know that most module manufacturers recommend that the final host product should be re-tested and I certainly think this is a good recommendation. Anyone who has tested emissions of final products with modules installed will know that the emissions from the module can sometimes fail when installed in a host. For EMC and Safety, it is very difficult (impossible?) to imagine that any tests of the module might be representative of the radio's performance inside a host; so the host should really be treated as a new product for testing to standards like EN 301 489-7, EN 301 489-24, product safety, etc. Finally; I see an incredibly wide variation in testing approach from module manufacturers for CE Marking a module. Just because it is CE Marked, does not mean they have fully tested it for every possible installation! This link is very useful...... http://www.rtteca.com/TGN01%20-%20May%202013.pdf Michael. -----Original Message----- From: Amund Westin [mailto:am...@westin-emission.no] Sent: 11 May 2015 07:55 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Integrating radio COSTs into other equipment RTTE approved 3G GSM module (EN 301 511) is integrated into an EN 61326-1 measurement product. Maybe this call for new radio tests such as radiated spurious emission. Anyone have experience about the consequences integrating such radio COTS? Regards Amund - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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