Hi All, I have been writing again, this time about how to recognize an important mechanism whereby EMI can creep into scope measurements. This month's Technical Tidbit discusses mechanisms whereby error can be generated in a measurement by EMI from the source itself. Abstract: Measurement of high amplitude impulsive signals, such as ESD, can incur errors due to radiated effects. The characteristics of these effects are discussed and ways to spot such errors in a measurement are given. This can be a problem in any lab, whether you think you are measuring ESD or not. Even looking for a logic signal glitch can be confounded by local impulses not associated with the signal you are looking at. The article tells how to spot one of these impulses that can cause you to waste a lot of lab time thinking it is in the circuit. The link to the article is the picture of the experimental test setup at the bottom of the home page at http://emcesd.com . Doug -- ------------------------------------------------------- ___ _ Doug Smith \ / ) P.O. Box 1457 ========= Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-----( ) | o | Email: doug@xxxxxxxxxx \ _ / ] \ _ / Website: http://www.dsmith.org ------------------------------------------------------- ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu