Setting The Gain - Basler ace acA640-90gm User Manual

Standard Features
10.1.1

Setting the Gain

This section (Section 10.1) describes how gain can be adjusted "manually", i.e.,
by setting the value of the Gain Raw parameter.
The camera also has a Gain Auto function that can automatically adjust the gain.
Manual adjustment of the Gain Raw parameter will only work correctly if the
Gain Auto function is disabled.
For more information about auto functions in general, see Section 10.9 on
page 211.
For more information about the Gain Auto function, see Section 10.9.2 on
page 218.
All Models Except the acA2500-14
The camera's gain is determined by the value of the Gain Raw parameter. Gain Raw is adjusted on
an integer scale. The minimum setting varies depending on the camera model and on whether
vertical binning is enabled (see Table 12). The maximum setting depends on whether the camera
is set for a pixel data format that yields 8 bit effective pixel depth (Mono 8, Bayer BG 8, YUV 4:2:2
Packed, YUV 4:2:2 (YUYV) Packed) or yields an effective pixel depth of 12 bits per pixel (Mono 12,
Mono 12 Packed, Bayer BG 12, Bayer BG 12 Packed).
.
Camera Model
acA640-90gm/gc
acA640-100gm/gc
acA750-30gm/gc
acA1300-30gm/gc
acA1600-20gm/gc
Table 12: Minimum and Maximum Allowed Gain Raw Settings
To set the Gain Raw parameter value:
Set the Gain Selector to Gain All.
Set the Gain Raw parameter to your desired value.
You can set the Gain Selector and the Gain Raw parameter value from within your application
software by using the Basler pylon API. The following code snippet illustrates using the API to set
the selector and the parameter value:
Camera.GainSelector.SetValue( GainSelector_All );
Camera.GainRaw.SetValue( 400 );
186
Min Setting Min Setting with
Vertical Binning
(mono cameras)
190
100
0
300
230
Max Setting
(8 bit depth)
100 1023
100 1023
NA 1023
200 850
220 850
Max Setting
(12 bit depth)
400
600
600
400
400
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