Are not forgetting site variations also? I think the site attenuation has leeway also. I remember something like +8-0 dB???
Michael Sundstrom Garmin Compliance Engineer 2-2606 (913) 440-1540 Whatever your discipline, become a student of excellence in all things. Take every opportunity to observe people who manifest the qualities of mastery. These models of excellence will inspire you and guide you toward the fulfillment of your highest potential." -- Tony Buzan and Michael Gelb, authors -----Original Message----- From: dward [mailto:[email protected]] Sent: Friday, September 05, 2014 11:16 AM To: [email protected] Subject: Re: [PSES] Failure of Radiated emission One of the reasons, many years ago, that a 'standard' setup was determined in both CISPR and ANSI standards was to relieve the never ending always present constant manipulation of cables and equipment. While the EUT is to be operating in a typical use scenario, the setup should be as depicted in the standard. This includes cables being bundled correctly, draped correctly and arranged on the test table correctly. Variation of this setup goes back to the 1980s when the constant equipment variations. Let's not go back there. Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, Inc., and I sintended for the exclusive use of the recipient(s) named above. It may contain information that is confidential and/or legally privileged. Any unauthorized use that may compromise that confidentiality via distribution or disclosure is prohibited. Please notify the sender immediately if you receive this communication in error, and delete it from your computer system. Usage of PCTEST email addresses for non-business related activities is strictly prohibited. No warranty is made that the e-mail or attachments(s) are free from computer virus or other defect. Thank you. -----Original Message----- From: Carpentier Kristiaan [mailto:[email protected]] Sent: Friday, September 5, 2014 7:36 AM To: [email protected] Subject: [PSES] Failure of Radiated emission Hi group, A ITE product is tested to EN55022 Radiated emission with a well defined setup (cables, traffic, etc...) trying to find the worst case emissions and it passes. I think finding the real worst case emission for all frequencies with one and the same set-up is in practice not possible in practice. That same product is retested by a customer or in case of market surveillance campaigns, then it is most likely not tested with the same set-up and results may fail. Would this be an issue or is it acceptable that it is retested with the same set-up as the initial testing? I refer to CISPR22, clause 8.4 that states that the operational conditions of the EUT shall be determined acc. to typical use.....The operat mode and rationale shall be stated in the report. So to me it looks sufficient to test a typical set-up, do your best to not make it best case and describe everything in the report. Any other thoughts? Best regards, Kris Carpentier - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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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]> ________________________________ CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use of the intended recipient(s) and contain information that may be confidential and/or legally privileged. If you have received this email in error, please notify the sender by reply email and delete the message. Any disclosure, copying, distribution or use of this communication (including attachments) by someone other than the intended recipient is prohibited. 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 <[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]>
