Casio TV-880C Manual page 11

• Caution
(1) Make sure that there is no distortion on the waveforms.
(2) Connect COLOR terminal of Chroma IC (M52045FP) to GND.
(3) Monitor the B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).
• Block diagram
Signal
generator
VCC1-1
Stabilizer
5.TINT pot adjustment
• Condition
(1) Signal
Broadcasting system: I
Color system: PAL color bar
(2) Signal level
Input electric field: 70 dBµ (75-ohm termination), P/S = 7 dB
(3) Other conditions
UK IF input (input electric field should be terminated with 75-ohm resistance).
Apply voltage of Vcc1-1 = 5.0 ± 0.05 [V]
• Adjustment
Observing output signal B with an oscilloscope, adjust TINT pot VR301 so that the wave from H and
H' will be same.
• Caution
Do not connect COLOR terminal to GND.
Monitor B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).
• Block diagram
Signal
generator
VCC1-1
Stabilizer
L-PCB
B output
Low-Pass Filter
L-PCB
B output
Low-Pass Filter
— 9 —
White level
Pedestal level
Oscilloscope
Oscilloscope
H H'