Stanford Research Systems SR810 Digital Lock-In Amplifier | 1 mHz - 102.4 kHz

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The Stanford Research Systems SR810 lock-in amplifier offers a dynamic reserve of >100 dB and provides a frequency range of 1 mHz - 102.4 kHz. Built in to the SR810 are differential inputs with 6 nV/√Hz input noise. Input impedance reads at 10 MΩ and the minimum input sensitivity is 2 nV. Stanford Research Systems SR810 lock-in amps use digital signal processors (DSP) to test and display the magnitude of signals. Analog lock-in amplifiers use a standard demodulator to integrate the input signal with the reference signal, but digital processing allows for demodulation via sampling the input signal with a high-precision A/D converter. This enables the SR810 to meet and exceed 100 dB of unfiltered dynamic reserve. The internal digital signal processor also provides digital filtering and digital phase-shifting to maximize measurement efficiency.