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Application Notes
Introduction
This application note describes how Automotive Electronic Control Unit (ECU) conducted transient tests can quickly and thoroughly be accomplished using the Keysight Technologies, Inc. N6705A DC Power Analyzer to playback actual transients seen in your vehicle.
Description
Automotive vehicle power systems are very harsh electrical environments. High current motors, solenoids and other components on the power system cause power system voltage transients and dropouts to occur often. Successful operation of your automotive electronics depends on adequate power transient immunity, and the mission critical nature of automotive electronics make thorough ECU testing a must.
A variety of test standards such as ISO-7637 and ISO-16750 document transient waveform profiles to help you in that effort. But those waveforms represent a best guess at what your ECU will see in the vehicle. This application note describes methods to help you verify your ECU operation in the harsh vehicle power system environment by actually capturing the voltage transients as they occur in the vehicle, and playing back at a later time at your convenience to test your ECU.
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