This tutorial is written to explain all the trigger setup variables for the 1.1.x series of firmware. There are two general types of trigger schemes, those that rely on a missing teeth to identify the wheel position and those that do not. This document deals with the latter.
The examples here are taken from a Mazda BP engine's trigger scheme. With the settings here it should be trivial to make changes and adapt the configuration to variants of this scheme.
First the mazda distributor contains a disc with slots as follows:
This camwheel rotates counterclockwise.
Looking closely at this wheel the waveform of a running engine will look like this graphed according to degrees of rotation on the cam. Since the crank rotates at twice the speed this graph also represents two complete crank revolutions.
