The OTC Automotive 2-Channel Scope, No. 3840F, combines an experienced-based information database with a true automotive RMS Graphing Multimeter and two-channel lab scope to accurately capture and translate complicated electrical component and diagnostic information and faults. The "Glitch Snare" feature captures, displays and saves abnormal signal patterns in the Scope mode for component testing. The secondary ignition function displays the waveform along with the spark voltage, RPM, burn time and burn voltage at the same time.