Mitsubishi Electric KD Series User Manual page 74

Address
Register name
70A0 DegitalGainEnable
70A4 DegitalGain_R
70A8 DegitalGain_G
70AC DegitalGain_B
5-2-11 PGA
[Funcion]
Amplify image signals for whole pixels in a line by the
designated magnification . Adjustable from 0 to 4.0 times
for each color.
This amplification is performed by digital calculation.
Thereby, Signal level increases by PGA function, but noise
level also increases same as signal amplification.
Amplify signal output for whole pixels
TM－XJ101C
5-2 Setting⑩: PGA
R/W Val
R/W 0 or 1
R/W -1024 to 3071
R/W -1024 to 3071 Set a value of Green PGA (0 to 4.0)
R/W -1024 to 3071 Set a value of Blue PGA (0 to 4.0)
amplification
pixel
Set PGA On/Off
0:OFF /1:ON
Set a value of Red PGA (0 to 4.0)
Output data ＝ Input data ×
[Remark]
1) When you apply PGA with each color's output, make
sure about White balance of color scanning.
2) The register value at "DegitalGain_R,G,B" is defined to
be a "Signed integer". When you set the register values
based on hex number, make sure the sign of "Positive
(+) " or "Negative (-)" of the register value.
A setting example: Register parameter data
= -2（decimal digit） = FFFFFFFEh(hex digit)
Result
1024 + Register value
1024
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