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Electrical Noise Example


mobythevan

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Here are two log plots, one showing the noise on my friends car with poor power distribution and grounding.  The other is my rx7 log from this weekend.   I gave him recommendations on how to fix his wiring and he is working on implementing the changes.  The same signals are shown in both log captures here.  Both of us doing a short WOT run.  Note that the bumps on my coolant temp reading are about a half degree, must be the smallest step of the ADC on MS3.  Also notice that my battery voltage does not move so you don't even see it on the plot.  In turn, the dwell is never adjusted since the battery voltage is constant so it is also a flat line.  

 

wes_bad_grounds_1.png

 

rx7_WOT_clean_signals.png

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