Allied Vision Technologies AVT Stingray Manual de instrucciones Pagina 275

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Configuration of the camera
STINGRAY Technical Manual V2.2.0
274
If both auto gain and auto shutter are enabled and if the shutter is at its
upper boundary and gain regulation is in progress, increasing the upper auto
shutter boundary has no effect on auto gain/shutter regulation as long as
auto gain regulation is active.
Auto gain control
The table below illustrates the advanced register for auto gain control.
MinValue and MaxValue limits the range the auto gain feature is allowed to
use for the regulation process. Both values are initialized with the minimum
and maximum value defined in the standard GAIN_INQ register.
Changing the auto gain range might not affect the regulation, if the regu-
lation is in a stable condition and no other condition affecting the image
brightness is changed.
If both auto gain and auto shutter are enabled and if the gain is at its lower
boundary and shutter regulation is in progress, decreasing the lower auto
gain boundary has no effect on auto gain/shutter regulation as long as auto
shutter regulation is active.
Both values can only be changed within the range defined by the standard
GAIN_INQ register.
Note
L
As with the Extended Shutter the value of MinValue and
MaxValue must not be set to a lower value than the minimum
shutter time.
Register Name Field Bit Description
0xF1000370 AUTOGAIN_CTRL Presence_Inq [0] Indicates presence of this
feature (read only)
--- [1..3] Reserved
MaxValue [4..15] Maximum auto gain value
--- [16..19] Reserved
MinValue [20..31] Minimum auto gain value
Table 131: Advanced register: Auto gain control
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