2-2. Calibration Adjustment of A/D Converter and
Video Coder
2-2-1. Preparation for adjustment
1.Set [RGB MODE] of the Custom Setup menu in the service mode to [Other].
2.Set the [Cal Mode] of the AD Converter in the service mode to [ON].
3.Set the image quality mode to AV professional standard state.
2-2-2. RGB AD adjustment
1.Input All white 90 IRE signal of VGA (640x480/60Hz) to the RGB input terminal.
2.Select RGB Calibration from the AD Converter menu, then adjust the R gain and the B gain in the menu and balance so that the detection values of R and B approximate to the detection value of G.
3.Adjust the Sub Contrast (RGB), that is, adjust the detection values of R, G, and B to the set value.
Detection set value: 230 ± 3
4.Set the RGB input signal to All gray 20 IRE signal of VGA (640x480/ 60Hz).
5.Adjust the RGB Bias, that is, adjust the detection values of R, G, and B to the set value.
Detection set value: 51 ± 3
6.Repeat steps 1 to 5 described above until the detection set value is ob- tained.
2-2-3. Component AD adjustment
1.Input All white 90 IRE signal of 1080/60i to the component input termi- nal.
2.Adjust the Sub Contrast (YUV), that is, adjust the detection value of G to the set value.
Detection set value: 230 ± 3
3.Set the component input signal to All gray 20 IRE signal of 1080/60i .
4.Adjust the Sub Bright (YUV), that is, adjust the detection value of G to the set value.
Detection set value: 51 ± 3
5.Adjust the CB Offset (YUV), that is, adjust so that the detection value of B is the same as that of G.
6.Adjust the CR Offset (YUV), that is, adjust so that the detection value of R is the same as that of G.
7.Repeat steps 4 to 6 until the detection set value in step 4 is obtained.
8.Repeat steps 2 to 7 until the detection set value in steps 2 and 4 are obtained.
