Configuration of the camera
GUPPY Technical Manual
V4.0.1
200
MinValue
and
MaxValue
limits the range the auto shutter feature is allowed
to use for the regulation process. Both values are initialized with the mini-
mum 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
EXTENDED_SHUTTER register for the current active shutter time.
Changing the auto shutter range might not affect the regulation, if the reg-
ulation 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 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 regula-
tion is in a stable condition and no other condition affecting the image
brightness is changed.
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 103: Advanced register for auto gain control