Table of Contents
Advertisement
PAL COLOR DIFFERENCE DEMODULATION RATIO ADJUSTMENT
Measuring Instruments
Test Points
Adjustment Points
[Preparation] Supply power to the following connector (CN001) pins using a DC power supply, extension cable, etc.
CN001 pins 45, 46
CN001 pins 47, 48
CN001 pins 25 - 29, 31, 32,
Note: Perform the following adjustments after completing the PAL Color
Depth adjustment.
1. Apply the PAL color bar signal to Terminal VIDEO1.
2. Connect the oscilloscope across CN001 pin 3 and GND.
3. Adjust VR304 so that the voltage at <A> in the figure on the right is
0.525 V ± 0.015 V.
76
Signal generator (PAL 75% color bar signal)
Oscilloscope
CN001 pin 3 (R-Y Output)
VR304 (Pr GAIN VR)
14 V DC ± 1 V
7 V DC ± 1 V
GND
35, 36, 49, 50
<A>
0.525V
±0.015V
Advertisement
Table of Contents
