Associated Genicam Register Information; Gain Control - IAI SP-20000M-CXP2 User Manual

8.1.4

Associated GenICam register information

Table – 57 Associated GenICam register information
GenICam Name
Black Level Selector
Black Level Raw
8.2

Gain control

The SP-20000M-CXP2 can adjust the master gain level (DigitalGainAll) from x1 (0dB) to 16 times (+24dB)
using x1 (0dB) as the reference (Factory default).
In the SP-20000C-CXP2, the master gain level (DigitalGainAll) can be adjusted from x1 (0dB) to 16 times
(+24dB) and R and B gains can be adjusted in the range of 0.45 times (-7dB) to 3.16 times (+ 10dB) using
the master gain as the reference.
Resolution: Master Gain:
Blue/Red Gain: x0.00017 /Step
In the SP-20000-CXP2, the digital gain is entirely used for adjusting the gain. Therefore, if a high gain
setting is used, breaks in the histogram may occur.
In the SP-20000C-CXP2, the color temperature adjusting range is specified in order to maintain the
maximum dynamic range of the sensor. Therefore, if the white balance is adjusted out of the sepecified
color temperature adjusting range and if the gain setting is less than the following conditions, the sensor
output may clip before it is saturated.
The guideline for settings at which the sensor output is clipped
At Master Gain 0 dB : R/B Gain = -2995 ( approx. x 0.6)
The guideline for R and B gain
Color temperature
3000K
9000K
Gain Control Range for
Gain
Gain
Setting
Amplitude
Value
x50.56
1600 x16
x7.15
x3.16
100 x1
x0.45
The above drawing shows the relation among gain setting value (command), gain amplitude and dB
indication. For example, the gain amplitude "x 3.16" equals 10dB.
SP-20000M-CXP2 / SP-20000C-CXP2
Access
R/W
R/W
x0.01 /Step
R Gain setting
-2110(approx. x 0.74)
18057(approx. x 3.2)
Gain
Setting
Monochrome
Value
Master
24dB
1600
0
0dB
Fig.37
Values
Digital All
-256 to 255
B Gain setting
16828(approx.. x 3)
-2993(approx.. x 0.6)
Gain
Gain Control Range for Bayer Color
Magnification
Master
34dB
X50.56
24dB
X16
X7.15
10dB
X3.16
X1
0dB
X0.45
-7dB
Gain control
- 69 -
Category
Analog Control
Analog Control
Gain Setting Value
(Magnification)
R&B
Red
Blue
17713 (X3.16)
10dB
0dB
0 (X1)
-7dB
-4533 (X0.45)
17713 (X3.16)
10dB
0dB
0 (X1)
-7dB
-4533 (X0.45)