论文部分内容阅读
副载波恢复电路的测试与调整是金星Ｃ４７１７型彩电基板测试系统的一部分．该电路由晶体振荡器与移相电路组成．本文对该电路作了较详细的分析，从而导出了调整该电路的方法．当信号存在误差时，应该调整哪些元件，或当存在信号偏差时，哪些元件值有偏差．这也是该系统的一个特点．由于该系统用于整机调试，所以要在最后的输出中发现该部分的问题，这也有一定难度，这一方面也作了一定说明．
Sub-carrier recovery circuit testing and adjustment is part of Venus C4717 color TV substrate test system. The circuit consists of a crystal oscillator and phase shift circuit. This article made a detailed analysis of the circuit, which led to the method of adjusting the circuit. When the signal error, which components should be adjusted, or when there is signal deviation, which components have deviations. This is also a feature of the system. Since the system is used for commissioning of the whole machine, it is also somewhat difficult to find the problem in the final output. In this respect, some explanations have also been made.