Propose a sampling of configurations to the powers that may be. Don Gies Field Service Engineer
GUTOR M: +1 346 313 6216 E: [email protected] 17 Capitol Reef Road Howell, NJ 07731 USA Sent by Android Phone General ________________________________ From: John Woodgate <[email protected]> Sent: Saturday, April 6, 2024 3:59:57 AM To: [email protected] <[email protected]> Subject: Re: [PSES] I would like to hear your thoughts please [External email: Use caution with links and attachments] ________________________________ I agree: pre-scan is the way to go. Document all of the steps so that you can produce your reasons for your decision if challenged. On 2024-04-06 00:05, Brent DeWitt wrote: Tough one! The problem lies in the determination of "worst case". While it would be easy to presume that having all of the hardware populated is worst case, it overlooks the effects of un-terminated stubs and other SI related issues. In addition, with the world of firmware based PLL clocks and memory traffic, it is a tough thing to determine. My opinion would be to preform the simplest pre-scan on each configuration and base the final, rigorous certification based on that knowledge. Brent Dewitt Milford, MA On 4/5/2024 6:47 PM, Lfresearch wrote: Hi folks, I would like to advise a client at where to draw the line on what needs testing. I would like to solicit opinions besides my own. Otherwise it’s the fox urging the chicken coop… So a manufacturer that makes a product of which there will be several variants. All use the same board, but have different sections of circuits populated. This may require slightly different code to run on the same uP in each case. So.. The burning question is can we perform and analysis that postulates a worse case hardware/software combination and test just one configuration? Or, do we have to do every combination? Or, are there some guidelines about where we draw the line of what to test and what can be claimed as similarity? Off list responses are welcome too. Thanks, Derek Walton LFResearch/SSCLabs. - ---------------------------------------------------------------- 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected]<mailto:[email protected]> Rick Linford at: [email protected]<mailto:[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]><mailto:[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected]<mailto:[email protected]> Rick Linford at: [email protected]<mailto:[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]><mailto:[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 -- OOO - Own Opinions Only Best wishes John Woodgate, Rayleigh, Essex UK Keep trying [https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-green-avg-v1.png]<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free.www.avg.com<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> ________________________________ 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe)<https://ewh.ieee.org/soc/pses/list.html> List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected]<mailto:[email protected]> Rick Linford at: [email protected]<mailto:[email protected]> For policy questions, send mail to: Jim Bacher at: [email protected]<mailto:[email protected]> ________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 - ---------------------------------------------------------------- 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
