How does Pro Filter recognize what channel in the config is defined as engine speed?
It is implied by the Engine Speed Channel ProFilter parameter. If you change this frequency data in the CFA file, the calculated channel based on this frequency channel also changes. Always remember: Calculated channel values are not stored in SFD files; they are calculated on the fly when you view the data. So it works on any calculated channel using channels 7–12 (based on the one implied by the setup parameters).
