QVI Cobra DRS-300, User Manual

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Optimizing Laser Settings
When using your Cobra, you may find it necessary to adjust the Maximum
Exposure and/or Threshold settings to obtain optimal scan results. These two
settings can be manipulated in the Sensor Settings window, which is accessed by
clicking on the
Sensor Settings
tab.
Maximum Exposure
This value is the maximum amount of time used to measure each point. Use this
control to set the maximum exposure time needed to obtain a valid height
reading. The acceptable values for this setting are from 0.000002 to 0.065535
seconds. The default value is 0.005, which provides acceptable results for most
surfaces.
Note:
In most cases, a valid reading can be obtained well within the default
maximum exposure setting.
The Maximum Exposure setting has a significant impact on scan velocity and
time. As you increase the exposure time, the scan velocity decreases, which
increases the time needed to complete the scan. Conversely, when you decrease
the exposure time, the scan velocity increases, and the total scan time decreases.
3-12 Getting Started