Always adjust parameters before connecting to the component. Steps to Test an Ignition Coil:
adds an oscilloscope function and a real-time UI for more detailed diagnostics. Retailers like AliExpress qdb-2a manual pdf
Many QDB-2A units are manufactured in China. Check page 2 of the PDF – some include both languages. Otherwise, use Google Translate’s document translation feature. Alternatively, contact the seller for an English supplement. Always adjust parameters before connecting to the component