Jeff, A piece of hardware that will make it easier to implement Ted Eckert's suggestions is:
DigiKey catalog number J462-ND VERTICAL SHIELDED JACK - TIN Johnson Components P/N 129-0701-201 $3.69 each, qty. 1 to 9 These are PCB mount shielded test jacks that will accept many models of oscilloscope probes. I have used them many times for diagnostic work. They fit TPI, as well as many H-P and Tektronix probes. Scott Lacey > -----Original Message----- > From: Bailey, Jeff [SMTP:[email protected]] > Sent: Wednesday, December 22, 1999 1:56 PM > To: 'emc-pstc' > Subject: ESD troubleshooting > > > Hello all, first off I would like to thank all who responded to my inquiry > about the EMC program offered by UMR, I am looking into enrolling further > now. > > I am now looking for any pointers from those more experienced than I. I > have a product that is giving me some grief when indirect ESD events > applied > to the HCP are applied at 4kV and above. I would like to be able to view > the disturbances that are present on the PCB during the event so I can try > to trace down where they are coming from and judge what attempts at fixing > the problem actually provide any difference. Can any of you give me some > pointers or rules of thumb on how to keep the interference from the event > form coupling onto a set of scope leads? I can see lots of noise but > cannot > definitely say that it is present on the PCB or if it is just coupling > into > the leads. There is noise present visible when the scope probes are left > unconnected but the trace is quite different from that seen with them > connected to the PCB. (but of course there is no solid reference with the > probes unconnected) > > I need to isolate the scope leads from the test so I can actually see what > is getting on to the PCB, is this actually possible??? > > Thanks for any comments or help. > > Best Regards and best wishes for the holiday season to everyone!! > :-) > > > Jeff Bailey > EMC Technologist > SST - A Division of Woodhead Canada Ltd. > Phone: (519) 725 5136 ext. 363 > Fax: (519) 725 1515 > Email: [email protected] > Web: www.sstech.on.ca > > All comments contained in the message are my own and do not necessarily > express the views of SST/Woodhead Canada Limited. > > > > > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). > --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
