Ken, James and offline colleagues, Thanks for the paper and experience-based feedback. I appreciate it. I have started tracking down the hardware and hope to have some test results shortly. I had done a fair amount of destructive HDMI cable evaluation 5-6 years ago, but not recently enough to know if/how construction quality has changed (i.e. cost-reduced to the point of becoming a lab testing frustration or regulatory challenge).
Kind regards, Adam in Atlanta [email protected] On Thu, Apr 2, 2020 at 12:27 PM Grasso, Charles <[email protected]> wrote: > Great paper Ken – Thanks for sharing! > > > > *From:* Ken Wyatt <[email protected]> > *Sent:* Tuesday, March 31, 2020 8:40 AM > *To:* [email protected] > *Subject:* Re: [PSES] HDMI distribution amplifier (1:4) and HDMI cable > recommendations? > > > > This message originated outside of DISH and was sent by: > [email protected] > > This may have been one of the first papers, by Bergey and Altland > (DesignCon 2008), that documented the EMI concern of HDMI (and other) > commercial cables. > > > > 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 Mar 31, 2020, at 7:59 AM, James Pawson (U3C) < > [email protected]> wrote: > > > > Adam, > > > > I’ve been having success with these HDMI cables. Not dissected one yet but > they seem to be pretty good from a radiated emissions point of view. You’ll > have to check if they are available in the USA. > > > > https://www.amazon.co.uk/dp/B01K1X1QV2/ref=pe_3187911_189395841_TE_dp_1 > > > > No experience on switches I’m afraid. A piece of equipment could meet the > HDMI specification easily but be absolutely terrible for EMC so Adopter > status isn’t necessarily useful from an EMC perspective. If you have HDMI > signal integrity analysis tools available then you can verify signal > quality but that’s out of most peoples budget. Mid price home AV equipment > might be a good place to start as this will have to meet Class B emissions. > > > > HTH > > James > > > > > > > > James Pawson > > EMC Problem Solver > > > > *Unit 3 Compliance* > > EMC Testing / Design for EMC / Problem Solving / Pre Compliance / > Consultancy / Environmental & Vibration > > > > www.unit3compliance.co.uk > > 07811 139957 > > 2 Wellington Business Park, > > New Lane, Bradford, BD4 8AL > > > > *From:* Adam Dixon <[email protected]> > *Sent:* 31 March 2020 14:50 > *To:* [email protected] > *Subject:* [PSES] HDMI distribution amplifier (1:4) and HDMI cable > recommendations? > > > > I would appreciate HDMI DA/splitter and cable recommendations for a test > lab requiring a minimum of 4 HDMI displays. There was 2017 discussion > about "quiet" TV's and cables. I'm interested in 1:4 distribution > amplifiers/splitters, as well as 10' to 25' cables. I expect I'll dissect > cables again, but would love recommendations. > > > > For the 1:4 (or 1:8) distribution amplifier/splitter requirement, it looks > like >50% of the manufacturers whose literature I've read are not HDMI > Adopters. > > > > At the semiconductor level, I've read product briefs from five companies, > all of which are HDMI Adopters. Figuring out which IC is in which > DA/splitter is really expensive, so am open to recommendations, > particularly if you've peeked inside well- or poor-performing modules. > > > > Cheers, > > Adam in Atlanta > > [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) <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) <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) <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) <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]>
