In message <002501ca8e4f$327f6210$977e2630$@com>, dated Tue, 5 Jan 2010, Charlie Blackham <[email protected]> writes:
>You don?t know whether the problem is with your mouse end of the USB or >the other end. The fact that the keyboard also stops functioning >suggests that the problem could be with the non-mouse end as (I >believe) PC USB ports share internal circuitry. Quite right. What I wrote about connecting the shield to the outside applies at BOTH ends. The shield in the computer might even go directly to the PC board, thus efficiently delivering the ESD energy to where it can do the most damage. In little old audio, we call that a 'pin 1 problem', for arcane reasons that only audio engineers are allowed to know. -- 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
