75
NTSC COLOR TINT AND DEPTH ADJUSTMENTS
Measuring Instruments Signal generator (NTSC 75% color bar signal)
Oscilloscope
Test Points CN001 pin 2 (B-Y Output)
Adjustment Points VR302 (TINT VR), VR303 (NTSC COLOR VR)
[Preparation] Supply power to the following connector (CN001) pins using a DC power supply, extension cable, etc.
Note: Perform the following adjustments after completing the NTSC Color
Sync adjustment.
1. Apply the NTSC color bar signal to Terminal VIDEO1.
2. Connect the oscilloscope across CN001 pin 2 and GND.
3. Adjust VR303 so that the voltage at <A> in the figure on the right is
0.525 V ± 0.015 V.
4.
Adjust VR302 so that the voltage at <B> in the figure on the right is
0.35 V ± 0.015 V.
PAL COLOR DEPTH ADJUSTMENT
Measuring Instruments Signal generator (PAL 75% color bar signal)
Oscilloscope
Test Points CN001 pin 2 (B-Y Output)
Adjustment Points VR305 (PAL COLOR VR)
CN001 pins 45, 46 14 V DC ± 1 V
CN001 pins 47, 48 7 V DC ± 1 V
CN001 pins 25 - 29, 31, 32, GND
35, 36, 49, 50
<B>
0.35V
±0.015V
<A>
0.525V
±0.015V
[Preparation] Supply power to the following connector (CN001) pins using a DC power supply, extension cable, etc.
Note: Perform the following adjustments after completing the PAL Color
Sync and Lissajou adjustments.
1. Apply the PAL color bar signal to Terminal VIDEO1.
2. Connect the oscilloscope across CN001 pin 2 and GND.
3. Adjust VR305 so that the voltage at <A> in the figure on the right is
0.525 V ± 0.015 V.
CN001 pins 45, 46 14 V DC ± 1 V
CN001 pins 47, 48 7 V DC ± 1 V
CN001 pins 25 to 29, 31, 32, GND
35, 36, 49, 50
<A>
0.525V
±0.015V
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