Seeing "noise" or interference on a data line. 2. Capturing Quality Waveforms for Analysis
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He opened his tablet to a weathered titled Advanced Automotive Waveform Analysis . He didn't just read it; he used it as a map. By overlaying the PDF’s "known-good" crankshaft position sensor pattern against the jagged mess on his screen, the culprit emerged: a slightly chipped reluctor wheel tooth, invisible to the naked eye but glaringly obvious in the voltage drops . Seeing "noise" or interference on a data line