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采用了硬件锁相环技术，可更加有效实现同步采样，提高了采样精度。
Application of the hardware PLL technology can achieve the synchronous sampling more effectively and help improve the sampling accuracy.
利用软件实现的锁相环比硬件锁相环具有更好的灵活性和通用性，同时具有结构简单、参数设计灵活等优点。
The PLL designed by software has a higher flexibility and versatility than that by hardware, at the same time it has the advantages of simple in structure and flexible design parameters and etc.
给出了系统总体结构、模拟通道设计、倍频锁相电路、数据采集电路、各种电参数测量算法及系统软硬件抗干扰措施。
The system hardware structure, analog channels circuits, data acquisition circuits, measurement algorithms of electric parameters and anti-jamming methods are given.
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