SP-20000M-PMCL / SP-20000C-PMCL
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8.2 Gain control
The SP-20000M-PMCL can adjust the gain level from x1 (0dB) to 16 times (+24dB) using x1 (0dB)
as the reference (Factory default). In the SP-20000C-PMCL, the master gain 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 7.15 times (+10dB) using the master gain as the reference.
Resolution:
Master Gain:
x0.01 (0.035dB)/Step
Blue/Red Gain:
x0.00017 /Step
The master gain uses digital gain. All digital gain has the resolution of x0.01 /Step and provides
more precise gain setting. However, as it uses only digital gain, please note that if high gain is
set, breaks in the histogram may occur.
Fig.35 Gain control
8.2.1 Gain Selector
The following parameters can be set.
Monochrome:
Digital All
Color:
Digital All/ Digital Red/Digital Blue
8.2.2 Gain
The range for adjustment is as follows.
Monochrome:
Digital All: 100
～
1600 (0dB
～
24dB)
Color:
Digitasl All: 100
～
1600 (0dB
～
24dB)
Digital Red: -4533
～
+17713 (-7dB
～
+10dB)
Digital Blue: -4533
～
+17713 (-7dB
～
+10dB)
8.2.3 Gain Auto
This provides automatic control of the gain level.
This is controlled by the command JAI ALC Reference.
There are three modes.
OFF:
Adjust manually.
Once:
Operate only one time when this command is set
Continuous:
Operate the auto gain continuously
x50.56
x16
x7.15
x3.16
x1
x0.45
1600
100
Gain
Amplitude
Gain
Setting
Value
Gain Control Range for
Monochrome
24dB
0dB
X50.56
X16
X7.15
X3.16
X1
X0.45
1600
0
Gain
Magnification
Gain Setting Value
(Magnification)
17713 (X3.16)
0 (X1)
-4533 (X0.45)
Gain
Setting
Value
Master
R&B
Master
Red
Blue
Gain Control Range for Bayer Color
34dB
-7dB
0dB
24dB
10dB
0dB
-7dB
10dB
0dB
-7dB
10dB
17713 (X3.16)
0 (X1)
-4533 (X0.45)
