Hi all – What wonderful responses. I understand that without the proper processes in attention that the chances of passing first time is low indeed. One could argue that the first time passers have such a system in place and I was interested in how much EMC has been integrated into the product design process in recent years!
Chas From: Richard Nute <[email protected]> Sent: Monday, May 24, 2021 12:45 PM To: Grasso, Charles [Outlook] <[email protected]>; [email protected] Subject: RE: [PSES] What percentage of products pass first time? This message originated outside of DISH and was sent by: [email protected]<mailto:[email protected]> Hi Charles: Not what you asked for, but a set of principles for success with third-party testing, from a product safety point of view: 1. The design engineer and the product safety engineer should be able to predict the outcome of any test. 2. Testing simply confirms (or not) the prediction. 3. Failure of a test or other requirement at the third-party delays the third-party investigation which can imperil the product schedule. To maintain schedule, the product must comply with all tests before it is submitted to the third-party. 4. If the product that you successfully tested fails a third-party test, then your or the third-party test was in error. This can open a dialogue between you and the third-party as to test process. 5. Tests to standards requirements are either pass or fail; always record the measurement. If the test requires a stimulation, then adjust the stimulation to the point of failure and record the measurement. Both tell you the margin between pass and failure. 6. Provide your measurement data to the third-party when you submit the product. If the third-party measurement data differs from your data, some third-parties will do their own investigation as to why. In my opinion, EMC is not a black art and can follow these same principles. Stay safe, and best regards, Rich From: Grasso, Charles [Outlook] <[email protected]<mailto:[email protected]>> Sent: Monday, May 24, 2021 7:47 AM To: [email protected]<mailto:[email protected]> Subject: [PSES] What percentage of products pass first time? Hello EMC gurus! Calling all labs - In your experience how many products pass the Unintentional Emissions test first time? - ---------------------------------------------------------------- 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 <[email protected]<mailto:[email protected]>> 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)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> - ---------------------------------------------------------------- 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
