Innovate Motorsports ST-12 - Manual (Page 29)

29
Select the trigger wheel characteristics. The trigger tooth is the tooth after the last missing tooth (if
missing teeth), or the extra tooth when the wheel has extra teeth. If only one pulse is used, the missing
teeth/extra teeth input is ignored.
To enter the offset in degrees, measure the offset (in degrees) after TDC after the last missing tooth. Also
measure the offset of the sensor from TDC. Subtract the sensor offset from the tooth offset to get the real
offset of the Trigger tooth to be entered. The following picture shows an example:
In this case the offset of the Trigger Tooth is 100 degrees (after TDC in rotation direction). The sensor is
mounted at 45 degrees after TDC. So the complete real offset from TDC is 55 (100 – 45) degrees after
TDC.
To measure ignition advance, Input 1 MUST be configured for RPM measurement.
6.6 Input 4 configuration
Function 1,2,3 and 4 on this input are used for pressure measurement. See section 5.3 for details.
For Custom Frequency, Custom RPM, speed sensing and duty cycle inputs on Input 3, see chapter 6.3
6.7 Input 5 configuration
For Custom Frequency, Custom RPM, speed sensing and duty cycle inputs on Input 3, see chapter 11.3