THORLABS DCU223x Operation Manual And Sdk page 96

DCx Cameras
o Hold
When you select this check box, the frame rate will remain constant if the pixel clock changes. If the frame
rate cannot be maintained, it is set to the nearest possible value.
o Max
The camera is operated at the maximum frame rate that is possible at the current pixel clock setting.
o Auto
Select this check box to activate the auto frame rate function. This function is only available when
exposure shutter
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Exposure time
Sets the exposure time. The available exposure time range depends on the pixel clock setting and the frame
rate. A low frame rate setting allows long exposure times. A high frame rate setting reduces the maximum
possible exposure time. In combination with flash an exposure time of 1 ms has been proven.
o Hold
When you select this check box, the exposure time will remain constant if the frame rate changes. If the
exposure time cannot be maintained, it is set to the nearest possible value.
o Max
The camera is operated at the maximum exposure time that is possible at the current frame rate.
o Auto
Select this check box to activate the
exposure time and pixel clock can no longer be adjusted manually. Selecting the "Hold" or "Max" check box
deselects the "Auto" check box.
o Long-term
If you select this check box, you can set an exposure time of up to 10 minutes on CCD cameras.
o Fine increment
Select this check box to set the exposure time in fine increments. This option is not supported by all camera
models.
Default
Click this button to reset all parameters to the model-specific defaults.
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is enabled.
auto exposure shutter function. If the "Auto" check box is selected, the
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auto