I bought a used OTC 4000 (1994 version) without the manual and i'm trying to figure out if I can get it to read knock. It only tells you if there is knock present but it does'nt say how much. Is there a way to read how much knock is present??? ![Mad :mad: :mad:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f621.png)
![Mad :mad: :mad:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f621.png)
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