I haven’t dissected an HDMI cable in a couple of years, but the HDMI Adopters consortium calls out lower EMI for 2.1-compliant cables:
https://www.hdmi.org/spec21sub/ultrahighspeedcable Any cable labeled as 2.1-compliant should still be dissected. Cheers, Adam in Atlanta [email protected] On Thu, Apr 29, 2021 at 11:14 AM John McAuley <[email protected]> wrote: > There is a company called Sewelldirect that used to provide a well > shielded HDMI cable. They had a webpage on the subject. However, I can’t > find it on their website anymore. > > > > Apple sell a properly shielded HDMI cable. > > > > BR > > > > John McAuley > > > > *From:* Ken Wyatt <[email protected]> > *Sent:* 29 April 2021 15:54 > *To:* [email protected] > *Subject:* Re: [PSES] EMC/EMI Cables > > > > The only sure way to qualify an HDMI cable manufacturer is to dissect the > connector - cable termination and check for pigtails. > > > > https://interferencetechnology.com/hdmi-cables-emi/ > > > > The article references some original investigations by Begey and Altland > (DesignCon 2008). > > > > Cheers, Ken > > > _______________________ > > 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 > 56 Aspen Dr. > Woodland Park, CO 80863 > > Phone: (719) 310-5418 > > Web Site <http://www.emc-seminars.com> | Blog <https://design-4-emc.com> > The EMC Blog (EDN) > <https://www.edn.com/electronics-blogs/4376432/The-EMC-Blog> > Subscribe to Newsletter > <http://www.emc-seminars.com/Newsletter/Newsletter.html> > Connect with me on LinkedIn <https://www.linkedin.com/in/kennethwyatt/> > > > > On Apr 28, 2021, at 12:45 PM, Larry K. Stillings < > [email protected]> wrote: > > > > L-Com seems to have a good understanding on how to construct HDMI cables > with 360 shields > > > > https://www.l-com.com/audio-video-hdmi-cable-assemblies > > > > Known problem for quite some time now > > > > > > Larry K. Stillings > Compliance Worldwide, Inc. > *Test Locally, Sell Globally and Launch Your Products Around the World!* > *FCC - Wireless - Telecom - CE Marking - International Approvals - Product > Safety* > 357 Main Street > <https://www.google.com/maps/search/357+Main+Street+%0D%0ASandown,+NH+03873?entry=gmail&source=g> > Sandown, NH 03873 > <https://www.google.com/maps/search/357+Main+Street+%0D%0ASandown,+NH+03873?entry=gmail&source=g> > (603) 887 3903 Fax 887-6445 > complianceworldwide.com > > > *Follow us on social media* > > <image001.png> linkedin.com/company/compliance-worldwide-inc > <image002.png> twitter.com/complianceww > > Privileged/Confidential Information may be contained in this message. If > you are not the addressee indicated in this message (or responsible for > delivery of the message to such person), you may not copy or deliver this > message to anyone. In such case, you should destroy this message and kindly > notify the sender by reply email. Please advise immediately if you or your > employer do not consent to Internet email for messages of this kind. > Opinions, conclusions and other information in this message that do not > relate to the official business of my firm shall be understood as neither > given nor endorsed by it. > > > > *From:* Cass Carmanico > *Sent:* Wednesday, April 28, 2021 2:24 PM > *To:* [email protected] > *Subject:* [PSES] EMC/EMI Cables > > > > Hi guys, > > > > I am having issues with getting audio/video product to pass the class A > limit. I've narrowed it down to the HDMI cables. Even the ones with the > ferrites on both ends are inconsistent. > > > > Does anyone have a recommendation on where to find good EMI/EMC HDMI > Cables. > > > > Thanks, > > > > Cass > > ---------------------------------------------- > > This e-mail and any attachments may contain information that is > confidential to Ross Video. > > If you are not the intended recipient, please notify me immediately by > replying to this message. Please also delete all copies. Thank you. > > - > ---------------------------------------------------------------- > > 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) <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]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > > *DISCLAIMER: The information contained in this e-mail may be confidential > and is intended solely for the use of the named addressee. 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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) <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]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[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]>
