Set Digital Gain - HikRobot CoaXPress User Manual

Analog Gain Mode Parameter
Off
Once
Continuous
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.
Figure 10-18 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.

10.10.2 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.
CoaXPress Area Scan Camera
Table 10-3 Analog Gain Mode and Principle
Analog Control >
Gain Auto
Analog Control >
Gain Auto
Analog Control >
Gain Auto
User Manual
·
Parameter Value
Off
Once
Continuous
54
Principle
The camera adjusts analog
gain according to the value
configured by user in Gain.
The camera adjusts the
analog gain automatically
according to the image
brightness. After adjusting,
it will switch to Off Mode.
The camera adjusts the
analog gain continuously
according to the image
brightness.