Pike Technical Manual
V5.2.0
336
Configuration of the camera
MinValue
and
MaxValue
limits the range the auto shutter feature is allowed to
use for the regulation process. Both values are initialized with the minimum and
maximum value defined in the standard SHUTTER_INQ register (multiplied by
the current active timebase).
If you change the
MinValue
and/or
MaxValue
and the new range exceeds the
range defined by the SHUTTER_INQ register, the standard SHUTTER register will
not show correct shutter values. In this case you should read the EXTEND-
ED_SHUTTER register for the current active shutter time.
Changing the auto shutter range might not affect the regulation, if the regula-
tion is in a stable condition and no other condition affecting the image bright-
ness is changed.
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 reg-
ulation 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 regulation
is in a stable condition and no other condition affecting the image brightness is
changed.
Note
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 169: Advanced register:
Auto gain control
