【摘 要】
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六、色度信号解调电路的调试色度信号解调电路包括色度放大器、梳状滤波器和同步检波器等电路,由于色差信号放大器和G-Y矩阵与同步检波电路紧密相连,其调试也在一起进行.调
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六、色度信号解调电路的调试色度信号解调电路包括色度放大器、梳状滤波器和同步检波器等电路,由于色差信号放大器和G-Y矩阵与同步检波电路紧密相连,其调试也在一起进行.调试上述电路时,彩色测试卡信号可看作是标准彩条信号,用示波器监视各级电路的输出波形(观测行中心附近波形);也可直接观察荧光屏上显示的彩条和其它彩色信息.
Sixth, the chroma signal demodulation circuit debugging Chroma signal demodulation circuit, including chrominance amplifier, comb filter and synchronous detector circuit, the color difference signal amplifier and GY matrix and synchronous detection circuit are closely connected, the debugging is also When debugging the above circuit, the color test card signal can be seen as a standard color bar signal, with the oscilloscope to monitor the output waveform of the circuit at all levels (near the center of the observation line waveform); can also be observed directly on the screen color bars and other Color information.
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