LG RD-JT30 Service Manual page 40

2) ADC layer (Fig-4): (only available when input source is analog RGB)
(Fig-4) ADC layer
2.1) ADC Brightness: ADC brightness auto calibration black.
2.2) ADC Contrast: ADC contrast auto calibration white.
2.3) ADC Offset RGB: value to tell you calibrate result.
2.4) ADC Gain RGB: value to tell you calibrate result.
2.5) Fac Brightness: adjust default brightness value in source PC.
2.6) Fac Contrast: adjust default contrast value in source PC.
3) Color layer (Fig-5):
(Fig-5) Color layer
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