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 entry in the NCSensorSettings section.
Starting with PC-DMIS 2019 R2, PC-DMIS no longer supports the Perceptron laser sensor. While you may still be able to install PC-DMIS 2019 R2 and later, PC-DMIS displays an error if you attempt to run measurement routines that use the Perceptron scanner. For additional information, please contact Technical Support.
For information on exposure and gray sums, see the PC-DMIS Laser documentation.