Configuration of the camera
STINGRAY Technical Manual
V4.4.2
321
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
As with the Extended Shutter the value of MinValue and
MaxValue must not be set to a lower value than the mini-
mum 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 146: Advanced register:
Auto gain control