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本文提出了用“彩色测试卡信号发生器”和普通具有“X轴和Y轴输入的示波器”测量PAL_D彩色电视机的解调误差,包括(B-Y)、(R-Y)解调角误差、幅度配合误差和相位配合误差。对于测量范围只限于相位配合误差小于10°,幅度配合误差小于0.2的情况下才能有效地进行测量,并还需要焊接电容、电阻、短路APC电位器,因而有它的局限性,对批量测试各种型号的彩色电视机是比较麻烦的,但可供没有矢量示波器而只有彩色测试卡发生器的工厂的设计人员在调试测量解码电路的解调误差时参考。
This paper proposes to measure the demodulation error of PAL_D color television with “Color Test Card Signal Generator” and ordinary “Oscilloscope with X-axis and Y-axis input” including (BY), (RY) Error and phase with the error. For the measurement range is limited to the phase with the error is less than 10 °, the amplitude of the error is less than 0.2 in the case of the effective measurement, and also need to welding capacitors, resistors, short circuit APC potentiometer, so it has its limitations, the bulk test Color model of the color TV is more troublesome, but available without a vector oscilloscope and only the color test card generator factory designers in the measurement of demodulation decoding demodulation error when the reference.