Hi Peter, The last time I had a similar problem with HDMI, the issue wasn't the cable. The host device had an improper PCB layout for the HDMI signals. Paired signal traces weren't properly matched leading to extra noise. Is your issue with just one host product or with multiple products?
Ted Eckert The opinions expressed are my own and do not necessarily reflect those of my employer. ________________________________ From: [email protected] <[email protected]> Sent: Thursday, May 15, 2025 8:43 AM To: [email protected] <[email protected]> Subject: [EXTERNAL] [PSES] HDMI cable emissions You don't often get email from [email protected]. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> Hello group, I am working on a HDMI cable where it does not pass radiated emissions with good margin. I have great braid coverage and have soldered the braid to the connector shell and have fully sealed and covered it with copper tape. Is there anything else that I need to do? My issue is mainly at below GHz when I use 1080P resolution. Thank you Peter ________________________________ 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://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf 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://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf 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
