Basler ace acA1920-155, User Manual, Page: 206 / 326

Features AW00123404000
196 Basler ace USB 3.0
8.1.1 Setting the Gain
The camera’s gain is determined by the value of the All parameter. The regular parameter value is
adjusted on a scale ranging from zero to a maximum value. The minimum regular value depends
on whether vertical binning is enabled (see Table 34). The maximum allowed setting depends on
whether the camera is set for a pixel format that yields an effective pixel bit depth of 8 bit per pixel
(Mono 8, RGB 8, BGR 8, Bayer BG 8, Bayer GB 8, Bayer RG 8, YCbCr422_8) or of 12 bit
(Mono 12, Mono 12 p, Bayer BG 12, Bayer GB 12, Bayer RG 12, Bayer BG 12 p, Bayer GB 12 p,
Bayer RG 12p).
Table 34 shows the minimum and maximum settable gain for each camera model. The values
indicate regular settings, i.e. the parameter limits are not removed.
Model
This section (Section 8.1) describes how gain can be adjusted "manually", i.e., by
setting the value of the gain All parameter.
The camera also has a Gain Auto function that can automatically adjust the gain.
"
Manual" adjustment of the gain All parameter will only work, if the Gain
Auto function is disabled. If the Gain Auto function is enabled the gain All
parameter will merely be in a "read only" state.
For more information about auto functions in general, see Section 8.12 on
page 261 . For more information about the Gain Auto function, see Section 8.12.4
on page 269 .
Camera Model Gain Setting
Min Regular Min Regular with
Vertical Binning
(Mono Cameras
Max Allowed
(8 bit depth)
Max Allowed
(12 bit depth)
acA640-90um/uc 0.0 db -3.231 db 29.9047 db 7.539 db
acA640-120um/uc 0.0 db 0.0 db 33.1357 db 17.95 db
acA645-100um/uc 0.0 db -2.154 db 29.5457 db 7.18 db
acA1300-30um/uc 0.0 db -3.59 db 19.745 db 3.59 db
acA1600-20um/uc 0.0 db -3.59 db 22.258 db 6.103 db
acA1920-25um/uc 0.0 db 0.0 db 23.79814 db 23.79814 db
acA1920-155um/uc 0.0 db 0.0 db 24.0 db 24.0 db
acA2000-165um/umNIR/uc 0.0 db 0.0 db 23.5935 db 23.5935 db
acA2040-90um/umNIR/uc 0.0 db 0.0 db 23.5935 db 23.5935 db
acA2500-14um/uc 0.0 db 0.0 db 23.79814 db 23.79814 db
acA3800-14um/uc 0.0 db 0.0 db 16.67569 db 16.67569 db
acA4600-10uc 0.0 db N/A 17.76052 db 17.76052 db
Table 34: Regular Minimum and Maximum Gain Settings