For Cermark rep. I have a tester that will show when the hall effect sensor detects the magnet. Buzzer and led come on at detection. I know how to determine TDC and time a motor. I prefer to use the detector rather than trying to hold the spark plug and see a spark.

Should the 30 degrees before TDC be set when the hall effect sensor first detects the magnet or

just after the magnet is no longer detected?