The location your speed source is coming from, Digital Input, CAN Bus etc.
The calibration number sets the relationship between displayed speed and turbo shaft speed. It is common for turbo speed transducer modules to divide down the pulses coming from the transducer to reduce signal frequency.
The equation to determine the calibration number is as follows:
Where:
·Number of Teeth is the number of teeth on the turbo compressor wheel.
·Divider is how much the transducer reduces the frequency of the signal. Eg if the transducer puts out one pulse for every 16 compressor teeth then the Divider number will be 16. If there is no divider, then divider will be 1.
The full relationships are as follows. This is included mainly for reference.
