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Inspecting
Signal Integrity Problems of CAN, LIN, and FlexRay
Serial Busses
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select "March" Registration Deadline: Noon on the day prior to the
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Schedule of Events
5:30 – 6:00 Pizza and Refreshments
Sponsor: Agilent Technologies
6:00 – 7:00 Technical Presentation
The Chapter Presentation is a FREE event. IEEE Non-Members Welcome!
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The IEEE Southeastern Michigan EMC Homepage is http://emcsociety.org/
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Abstract
Today’s electronic automotive designs include a
combination of analog, digital, and serial bus signal content. Embedded
automotive designs usually consist of distributed microcontroller-based
networks with serial bus communications such as CAN, LIN, MOST, and/or FlexRay. Automotive design engineers have traditionally
used oscilloscopes to test their analog signals — logic analyzers and trace
debuggers to test their digital parallel I/O signals — and protocol analyzers
to test and debug serial buses. But a class of measurement tool known as a
mixed signal oscilloscope (MSO) may be a superior tool allowing for
time-correlated testing of all three types of signals in one instrument. Using
an example of an electronic automotive design utilizing CAN serial communication,
this paper not only discusses the various MSO performance characteristics
required to test and verify this type of design, but also shows a debugging
methodology to uncover a random and infrequent signal integrity problem on the
differential CAN bus.
Intended Audience:
This paper is intended primarily for embedded
hardware designers developing various automotive electronics that utilize CAN,
LIN, or FlexRay serial communication. Although this
paper presents an example of debugging an automotive application, the basic
troubleshooting concepts presented in this seminar can be applied to a much
broader area of embedded design — not just automotive.

Bio
Johnnie Hancock is a Signal
Integrity Applications Engineer within Agilent
Technologies Electronic Products Group. He began his career with
Hewlett-Packard in 1979 as an embedded hardware designer, and holds a patent
for digital oscilloscope amplifier calibration. Johnnie is currently
responsible for Agilent's digitizing oscilloscope
measurement applications and has authored many papers and regularly speaks at
technical conferences. Johnnie graduated from the
Author:
Johnnie Hancock
Agilent Technologies
1900 Garden of the
Ph: +1 719 590-3183
Fax: +1 719 590-5030
Email: johnnie_hancock@agilent.com
The IEEE Southeastern Michigan EMC Homepage is http://emcsociety.org/