Exposure and Gray Sums During Calibration
Before you start to calibrate your laser probe, be aware that PC-DMIS automatically sets the exposure to the default calibration value of 300 and the gray sums to the default calibration values of 10 for the minimum and 300 for the maximum. These values work best for most calibration scenarios. Your original exposure and gray sums values are restored once the process finishes. While gray sums with values of 10, 300 are often appropriate for calibration, values of 30, 300 are typical for normal scanning.
Exposure for Rare Lighting Conditions
An exposure value of 300 is sometimes not sufficient in rare lighting conditions, such as V4i in a sodium lighting environment. If, due to such lighting conditions, it appears that PC-DMIS has trouble accepting the laser arcs during the calibration process, you may need to lower the default calibration exposure to a value close to 200. To do this, use the PC-DMIS Settings Editor, and modify the PerceptronDefaultCalibrationExposure registry entry in the NCSensorSettings section.
For information on exposure and gray sums, see the PC-DMIS Laser documentation.