Lock-in Amplifier에 대해 알아봅니다.

예전에 nF사의 LI5660 Lock-in Amplifier가 출시되었을 때 한번 포스팅했었는데, 오랜만에 락인엠프에 대해 알아봅니다. Key Features • Max.Measurement Frequency: 11 MHz • Franctional Harmonic Measurement • Dual Frequency Simultaneous Measurement • External 10 MHz Synchoronous Input What is a lock-in amplifier?

The lock-in amplifier measures the amplitude and phase of an AC signal by combining a PSD (phase sensitive detector) and LPF (low-pass filter). Enter an AC "reference signal" and measure only signals of the same frequency.

Even if the measurement signal contains AC noise, it is possible to r..........