MATLAB: Lock-in Amplifier
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Example MATLAB script to implement the Lock-in Amplifier (basic)
%% Basic Lock-in Amplifier Example % % This example demonstrates how you can configure the lock-in amplifier % instrument. % % (c) 2017 Liquid Instruments Pty. Ltd. % %% Connect to your Moku ip = input('Please enter your Moku:Lab IP address: ', 's'); % Connect to your Moku and deploy the desired instrument m = MokuLockInAmp(ip); %% Configure the instrument % Configure the two DAC outputs to provide the R (magnitude) and % demodulation (local-oscillator in this case, see below) outputs. % Give the main ('R') channel 100x gain m.set_outputs('R','demod'); m.set_gain('main',100); % Demodulate at 1MHz (internally-generated) with a 100Hz, 2nd-order % (6dB/octave) LPF. m.set_demodulation('internal','frequency',1e6); m.set_filter(100,2);