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《Physics Experimentation》 2015-09
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Design and measurements of lock-in amplifier based on LabVIEW

WANG Li;SHI Yun-cheng;YANG Zhong-jie;YANG Xu-fang;MIAO Xiao-li;Physics Experiment Center,Donghua University;  
A virtual lock-in amplifier was designed based on NI LabVIEW software platform and PCI-6251 acquisition card.A series of measurements like phase sensitive detection,noise suppression by even and odd harmonics and frequency response had been done with a good accuracy.The measurement results demonstrated that this virtual lock-in amplifier had a good and even better performance of noise suppression compared with normal instrumental lock-in amplifier.
【Fund】: 东华大学理学院大学生创新基金
【CateGory Index】: TN722
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