Phase-lock detection 锁相探测
Phase lock loop and benchmark resistance compensating technologies were used to improve the detection precision, the error was less than 10%.
通过锁相放大技术及基准电阻补偿方法提高了测量的精度，误差在10%以内。
Used lock-in amplifier SR844 for hardware phase detection and compared with software detection.
利用锁相放大器SR844对产生的信号进行模拟鉴相，并同软件鉴相结果比较分析；
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