I saw Mr. Viau’s post and purposely didn’t answer it for two reasons.
First and foremost, I don’t have a definitive answer to his question. But second, my reaction to all these revisions was somewhat opposite of his. That is, I recall the original 1973 release, which was current when I got started, and (if memory serves – unfortunately I don’t have a copy) it was 37 pages long. That may be in error, but what is absolutely true is that the original was much shorter than any of the revisions. My assessment of the original was that it was perfect for some new program manager who may have previously been peripherally aware of the concept of EMC, but now needed a little more in-depth understanding of the EMC aspects of the product acquisition process. When revision A came out, I was quite disappointed, because it had suffered “mission creep” and was never, ever, not ever, going to be read by anyone in a managerial position. It may well have been useful for someone who needed to learn the Navy EMC process in detail, but the “customer” for that handbook had completely changed. A guess as to the changes between the follow-on revisions, based purely on analogous experience, is that when personnel change, viewpoints change and even though the underlying technical or managerial issues have not changed, each contributor wants to put his stamp on things, so that handbook changes often arise from varying personalities, as opposed to purely factual matters. Sorry, that’s all I’ve got, which is why I didn’t originally respond. Long shot, if anyone has a copy of the original 1973 release of MIL-HDBK-237, I would appreciate a copy, to complete my collection. Thank you, -- Ken Javor Ph: (256) 650-5261 From: Ken Wyatt <[email protected]> Reply-To: Ken Wyatt <[email protected]> Date: Saturday, June 22, 2024 at 11:19 AM To: <[email protected]> Subject: Re: [PSES] MIL-HDBK-237B drastic changes You might check with Ken Javor ([email protected]). He’s pretty savvy on MIL-STDs. _______________________ I'm here to help you succeed! Feel free to call or email with any questions related to EMC or EMI troubleshooting - at no obligation. I'm always happy to help! Kenneth Wyatt Wyatt Technical Services LLC 8201 Lighthouse Lane Ct Windsor, CO 80528 Contact Me! New Books! Web Site | Blog The EMC Blog (EDN) Subscribe to Newsletter Connect with me on LinkedIn On Jun 19, 2024, at 5:55 PM, Michael Viau <[email protected]> wrote: Does anyone have any documentation (or even a story) on why the changes between MIL-HDBK-237B (1997) and 237C (2001) were so drastic? 237B filled a sorely missed gap in terms of how the DIDs were explained and described. It seems to be the most recent document to actually talk through the expectations for an E3IAR. And the last one to talk about EMC Control Plans in any detail. ADS-37A-PRF has a full appendix describing an E3IAR, but it was a year before 237B was released. Why did C drop all of this helpful context? 237C genuinely seems like it could be an entirely separate document, and it seems odd that they went through the effort of deleting so much of rev B. Any suggestions for clues I could follow to paint the picture? Thanks everyone! Michael Viau - ---------------------------------------------------------------- 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 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 at: [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
