Lut (Look Up Table) And Gamma; Test Pattern Generator - IAI AT-140GE User Manual

11.7. LUT (Look Up Table) and gamma

The AT-140GE provides a LUT (Look UP
Table) to adjust the gamma. JAI LUT mode
is used for this function.
If LUT is selected, the required gamma
characteristics can be achieved.
The gamma can be set from 1.0 to 0.45.
CCD out
Black
200mV
230mV↑
Note: The analog signal is used only internally.

11.8. Test pattern generator

The AT-140GE has an internal test pattern generator. These signals are output as the
last process of the digital signal processing circuit and can be used for adjustment of
the related system. The AT-140GE has a total of 6 test pattern types.
Gray Horizontal ramp
Gray Vertical Ramp Moving
(The starting point of the gradation
moves to the bottom.)
AT-140GE
Analog Signal
Setup 3.6%, 25mV
700mV
800mV
Gray Vertical Ramp
Color Bar
Fig.51
Fig.50
Digital Out(32bit)
32LSB
890LSB
1023LSB
Gray Horizontal Ramp Moving
(The starting point of the gradation
moves to the right.)
Test patterns
- 62 -
Gamma setting
Digital Out(24bit)
8LSB
222LSB
255LSB