THORLABS DCU223x Operation Manual And Sdk page 97

3.4.2.7.2 Image
On this tab you can set the sensor gain parameters for your DCx camera (see also
Master gain
The following functions control the analog image signal gain and the black level. The analog adjustments are made
directly in the sensor, which achieves better results than image adjustments via software.
Gain [0 ... 100]
Gain for overall image brightness. Some camera models have no master gain.
Master gain = 100 means maximum gain; the actual factor is displayed. A gain factor of 1x disables master gain.
The maximum possible gain factor depends on the model you are using.
o Auto
Select this check box to activate the
setting disables the "Auto" function.
o Gain boost
Additional analog camera hardware gain. The gain factor ranges between 1.5x and 2x, depending on the
camera model.
Black level (offset) [0 ... 255]
Offset for the black level of the sensor signal. The sensor adjusts the black level of the pixels automatically by
default. If the environment is very bright, it can be necessary to adjust the black level manually. High gain may
offset the black level. Only an additive offset is possible (increase of the black level).
o Auto
The black level is automatically corrected by the sensor (recommended).
Note
With cameras featuring both master gain and RGB gain, the two gain factors are multiplied. Very high gain
values can be achieved in this way. If you want to use the RGB sliders for color adjustment, we recommend
setting green gain to 0 and using only red and blue gain.
Color gain
You can fix a setting (in kelvins) for the
function will use the sensor's hardware gain controls for the setting, as far as possible. In addition, you can choose
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automatic gain control
color temperature of an image when you are using a color camera. The
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Gain and offset
function. Manually changing the master gain
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3 Operation
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