Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Oscilloscope Patterns and Waveforms





Waveform




Fig.1) The square wave signal should be smooth and without any distortion.
Fig.2,3)The CMPS falling(rising) edge is coincided with 3 - 5 tooth of the CKP from one longer signal(missing tooth)