Example MATLAB script to implement the Spectrum Analyzer (plotting)

%% Basic Spectrum Analyzer Example  
%
%  This example demonstrates how you can configure the Spectrum Analyzer
%  instrument to retrieve a single spectrum data frame over a set frequency 
%  span.
%
%  (c) 2021 Liquid Instruments Pty. Ltd.
%

%% Connect to the Moku
% Connect to your Moku by its IP address.
i = MokuSpectrumAnalyzer('192.168.###.###');

try
    
    %% Configure the instrument
    
    % Generate a sine wave on Channel 1
    % 1Vpp, 1MHz
    i.sa_output(1, 1, 1e6);
    % Generate a sine wave on Channel 2
    % 2Vpp, 50kHz
    i.sa_output(2, 2, 50e3);
    
    % Configure the measurement span to from 10Hz to 10MHz
    i.set_span(10, 10e6);
    % Use Blackman Harris window
    i.set_window('BlackmanHarris');
    % Set resolution bandwidth to automatic
    i.set_rbw('Auto');
    
    %% Retrieve data
    % Get one frame of spectrum data and 
    % set the amplitude scale to dBm
    data = i.get_data('units','dBm');
    
    % Set up the plots
    figure
    lh = plot(data.frequency, data.ch1, data.frequency, data.ch2);
    xlabel(gca,'Frequency (Hz)')
    ylabel(gca,'Amplitude (dBm)')
    
    %% Receive and plot new data frames
    while 1
        data = i.get_data('units','dBm');
    
        set(lh(1),'XData',data.frequency,'YData',data.ch1);
        set(lh(2),'XData',data.frequency,'YData',data.ch2);
    
        axis tight
        pause(0.1)
    end

catch ME
    % End the current connection session with your Moku
    i.relinquish_ownership();
    rethrow(ME)
end

i.relinquish_ownership();