some human freq's I ran across, not on purpose, were up close to 100 hz.
________________________________ From: Ken Javor <[email protected]> To: Untitled <[email protected]> Sent: Tue, January 4, 2011 6:35:24 PM Subject: Re: Medical EMC and low-level signals 3 Volts open-circuit common mode from a 150 Ohm source impedance at 150 kHz or higher. Your signals are differential mode and at frequencies of a few Hz or so. Plenty of opportunity for filtering, shielding and common mode rejection. Ken Javor Phone: (256) 650-5261 ________________________________ From: Dave Wilson <[email protected]> List-Post: [email protected] Date: Tue, 4 Jan 2011 15:09:13 -0800 (PST) To: IEEE EMC-PSTC <[email protected]> Subject: Medical EMC and low-level signals Can anyone out there explain to me how low-level patient physiological signal simulations (of the orders presumably of millivolts) on patient-coupled cables can be expected to meet susceptibility levels upwards of 3V? Is an exemption applied? Thanks in advance, Dave Wilson - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.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]>
