[SI-LIST] more soures of error in scope measurements

From: Doug Smith <doug@xxxxxxxxxx>
To: SI-List <si-list@xxxxxxxxxxxxx>
Date: Mon, 01 Nov 2004 19:40:20 -0800

I have been writing again, and this month's Technical Tidbit at my 
website discusses sources of measurement error that can occur internal 
to oscilloscopes including interchannel crosstalk and other sources of 
error. Most of my scope articles deal with errors caused by probing 
techniques external to the scope, so the focus of this article is 
different. It is on the internals of the scope.

Some very popular models of scopes have enough interchannel crosstalk 
to be an issue with mixed signal measurements (high amplitude signal 
on one channel, usually digital, and a low amplitude signal on another 
channel).

Abstract: Crosstalk between channels of an oscilloscope can contribute 
to measurement error. Conditions which can result in crosstalk error 
as well as signs that measurement error maybe occurring are discussed 
and recommendations made.

To see the article, to go http://emcesd.com where the link to the 
article is the scope plot picture at the bottom of the main page 
(after the ~90 other papers, articles, and presentations).

Doug
-- 
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     ___          _       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
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[SI-LIST] more soures of error in scope measurements

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