#### Trackball

If your system supports a trackball for manual control, you should use the trackball for fine adjustment of the Vision probe. Use the trackball once the Vision probe is in position and you want to take the video measurement on the part.

- To improve the slow trackball speed response, increase the Trackball Speed Linear Factor.

- To get a higher speed response, increase the Trackball Speed Exponential Factor.

If you are using a ROI system, the default settings are 0.2 for the Trackball Speed Linear Factor and 0.003 for the Trackball Speed Exponential Factor.