SK-2500 Handheld Oscilloscope Observation Method
The SK-2500 handheld oscilloscope guide from 海理精密计测器（东莞）有限公司 explains how to observe control pulses and the waveforms of sensors and actuators at their connectors and terminals. For each example it lists the connector/terminal numbers, signal names, voltage-axis and time-axis settings, and the observed waveform.
The examples cover crankshaft and cam angle sensors, oxygen sensors, ignition coils, injectors, generator ripple and charging voltage, throttle and pressure sensors, and an oil control valve. The document states that results may differ by vehicle model and that the service manual from each automaker should be consulted for details. This manual is written in Chinese.
It describes observation methods for the SK-2500 handheld oscilloscope using typical connectors, terminals, and input/output waveforms of sensors and actuators.
The document says details may differ by the actual vehicle model and should be checked in the service manual issued by each automaker.
A 100-74 ripple voltage measurement test lead is required and is sold separately.
A 660 AC/DC clamp meter is required and is sold separately.