© 2016 Thorlabs Scientific Imaging358
DCx Camera Functional Description and SDK Manual
4.3.89 is_SetHardwareGain
Syntax
INT is_SetHardwareGain (HIDS hCam, INT nMaster, INT nRed, INT nGreen, INT nBlue)
Description
is_SetHardwareGain() controls the sensor gain channels. These can be set between 0 % and
100 % independently of of each other. The actual gain factor obtained for the value 100 % depends
on the sensor and is specified in Camera and sensor data chapter.
You can use the is_GetSensorInfo() function to query the available gain controls.
Notes
1. Sensor Gain
A signal gain will also result in a noise gain. High gain settings are therefore not recommended.
We suggest the following gain settings:
1. Enable the gain boost function is_SetGainBoost().
2. If required, adjust the gain setting with is_SetHardwareGain()
New gain settings might only become effective when the next image is captured. This depends on
the time when the gain settings are changed.
2. Linearity of Sensor Gain
On DCx Cameras, you can set the gain factor in increments from 0 to 100. These increments are
not graduated linearly throughout the range due to the sensor. The increments will typically be
greater in the upper range than in the lower range.
The maximum gain factor settings also vary from sensor to sensor.
3. Default Settings for RGB gains
The default setting values for the red, green and blue channel gain factors depend on the color
correction matrix that has been set. If you select a different color correction matrix, the returned
default values might change (see also is_SetColorCorrection()).
Input parameters
Sets the overall gain factor (0...100).
The master gain factor will not be changed.
Returns the master gain factor.
Returns the red channel gain factor.
Returns the green channel gain factor.
Returns the blue channel gain factor.
Returns the default master gain factor.
Returns the default red channel gain factor.
Returns the default green channel gain factor.
Returns the default blue channel gain factor.
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