I've just bought a modded ODB-3, but it came without any documentation. I have found some settings I like by trial & error, and as I also have an unmodded ODB-3 which I bought just before I saw the modded one, I can compare the two and appreciate that the mod does represent an improvement.
Does anyone have any documentation about what the three position mini toggle switch is specifically switching between? Is selecting different clipping diodes? If so which ones are in which position?