Is there unexpected electrical interference? 3. Essential Automotive Waveform Applications I. Ignition System Waveform Analysis Ignition diagnostics are critical for misfire resolution.
Arthur didn't look up. He was hunched over the workbench, his eyes scanning the glowing screen of his laptop. He wasn't looking at the car; he was looking at a PDF. A digital tome titled, simply: Automotive Oscilloscopes: Waveform Analysis . pdf automotive oscilloscopes waveform analysis
: This feature lets you record a long stream of data and scroll back to find a "hiccup" that occurred during a test drive. Common Waveform Targets Primary/Secondary Ignition Is there unexpected electrical interference
Set a voltage trigger threshold to stabilize a repeating waveform on the screen. 5. Common Waveform Fault Visual Reference Symptom on Screen Potential Root Cause Affected Components Voltage drop below expected 0V ground Bad component or chassis ground All sensors/actuators Rounded square wave corners High electrical resistance Hall Effect sensors, data buses Extremely short spark line duration High circuit resistance or lean fuel mix Spark plugs, ignition wires Erratic hash/noise on signal line Electromagnetic interference (EMI) Shielded sensor wires He wasn't looking at the car; he was looking at a PDF
The time the primary circuit is grounded to charge the coil.
Controls the visual height of the signal. If diagnosing a 12V actuator, a 20V scale ensures the entire signal fits on the screen without clipping.