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4.10 Setting Gain
The camera can adjust the analog gain (x1 to x 17.8 in 16 steps) and the
digital gain. As shown in the figure below, increasing the gain setting
increases the gradient of the camera
’s response curve and results in a higher
camera output for a given amount of light. Analog gain can be changed by
sending the
”gax” command. Digital gain can be changed by sending the
“gdx” command.
Figure 4-10-1 PGA Gain Adjustment
Gain and noise values are proportionally related.
Adjust the amount of gain in accordance with the requirements of your
camera system.
Fs
Fs : Saturation Output
Gain a
Amount of Incident
Light (lx
・
s)
(a<b<c)
Gain b
Gain c