CameraLink Area Scan Camera
·
User Manual
54
Table 8-3
Analog Gain Mode and Principle
Analog Gain Mode Parameter
Parameter Value Principle
Off
Analog Control >
Gain Auto
Off
The camera adjusts analog
gain according to the value
configured by user in Gain.
Once
Analog Control >
Gain Auto
Once
Adjust the analog gain
automatically according to
the image brightness. After
adjusting, it will switch to
Off Mode.
Continuous
Analog Control >
Gain Auto
Continuous
Adjust the analog gain
continuously according to
the image brightness.
When the analog gain is set as Once or Continuous, the gain should be within the range of Auto
Gain Lower Limit and Auto Gain Upper Limit, as shown below.
Figure 8-14
Set Analog Gain under Once or Continuous Mode
When increasing the analog gain, the image noise will increase too, which will influence image
quality. If you want to increase image grayscale value, it is recommended to increase the camera’s
exposure time. If the exposure time reaches its upper limit, and at this point, you can increase
analog gain.
8.8.2 Set Digital Gain
Apart from analog gain, the camera also supports digital gain function. When analog gain reaching
its upper limit and the image is still too dark, it is recommended to improve image brightness via
digital gain. You can set digital gain as shown below.
Steps: