#### Use TRAX Calibration check box

When calibrating an analog probe on some machine types, particularly when using the Leitz interface, there is typically a choice of whether or not to use the TRAX calibration algorithm for calculating the calibration coefficients. You can choose which calibration algorithm is used by selecting or clearing the Use TRAX Calibration check box.

- If you select this check box, PC-DMIS uses the TRAX calibration algorithm.

- If you clear this check box, PC-DMIS uses the PMM calibration algorithm.

This check box does not change the actual calibration process in any way; instead, it defines to the math algorithm used to process the data after the discrete hit-based analog probe calibration process finishes.

Note: If you need to know when to switch calibration algorithms, you should consult with the creators of your particular machine. They can recommend the best practice for their particular machine for a particular situation.