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[SI-LIST] Tuned probe tester
- From: Doug Smith <doug@xxxxxxxxxx>
- To: SI-List <si-list@xxxxxxxxxxxxx>,emc-pstc <emc-pstc@xxxxxxxxxxxxxxxxxx>
- Date: Tue, 06 Jan 2004 16:21:45 -0800
I have posted my latest technical tidbit on http://emcesd.com that
discusses one way probing a signal can distort it as well. Ever have a
circuit only work when a scope probe is connected? One possible answer
is in the article.
------
Abstract: Probing can have significant effects on the signals being
measured. One of these effects, resonance between probe input
capacitance and lead inductance, can be simulated with a trimmer
capacitor and its connecting leads. Such a "tuned probe simulator" can
both provide insight on how probing affects signals and help
troubleshoot circuit problems as well. Tuned probe simulators for
passive and active probes are discussed.
------
UC Berkeley Extension is hosting my high frequency
measurement/troubleshooting course in early March. The link to the
course is:
http://www.unex.berkeley.edu/eng/elec/313544.html
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
\ _ / ] \ _ / Web: http://www.dsmith.org
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