To achieve maximum accuracy from your launch monitor in your golf simulator, you must take into account the following criteria: You must have adequate space to utilize the QED. If you have a centered aim Initial setup Initial and periodic calibration Correct utilization of club markings and marked balls Lighting The light beam from the projector and the Uneekor sensor should not interfere with one another; you must verify that the two devices are not physically obstructing one another. Again, your stance should not impede your swing and should not produce shadows on the screen. It may require adjustments.