A scan tool tells you what is wrong. Waveform analysis tells you why it is wrong. And the PDF is your translator.

He scrolled further down the document. Analysis of Irregular Burn Times.

03 | Evaluating Oscilloscopes * Introduction. * Ease-of-Use. * The Complete Measurement System Probes. * Bandwidth. * Rise Time. * How2 #17: Interpreting Our First Scope Waveform!

Unlocking the Invisible: A Guide to Automotive Oscilloscope Waveform Analysis