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在ＰＡＬ－Ｄ制彩色电视解码电路存在多种误差参量的条件下，对现有的４种类型测试信号的输出进行了分析和比较，并给出对应测量和调整步骤，结果表明，隔行色度信号是目前从电路角度测量和调整ＰＡＬ－Ｄ制彩色电视解码电路最有效的信号，值得尽快开发和应用
Under the condition that there are many error parameters in the PAL-D color TV decoding circuit, the output of the existing four types of test signals is analyzed and compared, and the corresponding measurement and adjustment steps are given. The results show that the interlaced colorimetric Signal is currently the most effective signal from the circuit point of view to measure and adjust PAL-D color TV decoder circuit, it is worth as soon as possible to develop and apply