Prior to the start of calibration, PC-DMIS sets the exposure and gray sum values to the following:
Exposure: 300
Gray Sum Min: 10
Gray Sum Max: 300
These settings work best for most calibration scenarios. Once the calibration finishes, PC-DMIS restores your original exposure and gray sum values (from before calibration).
A Gray Sum Min of 10 and a Gray Sum Max of 300 are often appropriate for calibration.
A Gray Sum Min of 30 and a Gray Sum Max of 300 are typical for normal scanning.
Also, the default exposure value of 300 is often not sufficient in rare lighting conditions (such using a V4i with sodium lighting). If PC-DMIS has difficulty accepting the arcs during the calibration process, you may need to raise the default calibration exposure value to 400 or so. In these cases, modify the PerceptronDefaultCalibrationExposure entry located in the NCSensorSettings section of the PC-DMIS Settings Editor. For details, see the PC-DMIS Settings Editor documentation.
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.
More:
Laser Probe Toolbox: Laser Pixel CG Locator Properties tab