In message <OFC571B2FE.A2F9F043-ON882576FF.000541D6-882576FF.000A02FC@US.Schneider-E lectric.com>, dated Wed, 7 Apr 2010, ralph.mcdiar...@ca.schneider-electric.com writes:
>Two academic questions for the group: >1.When we say '50uH/50 ohm LISN' are we referring to a device which >provides a source impedance of 50 ohms over its frequency range or one >that must be terminated with 50 ohms? The latter. > >2.Is it sufficient to terminate a cable in its characteristic impedance >at one end only? Often, at the receiving end only. The idea is that the termination at that end does not reflect anything back to the sending end, which may not be terminated correctly. But the lack of correct termination does cause unwanted effects in some cases. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK I should be disillusioned, but it's not worth the effort. - 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 <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
