measure small signal bandwidth

matlab/run_test.m

@@ -8,23 +8,20 @@ close(f);
 %% Convert the Data
 data = SimulinkRealTime.utils.getFileScopeData('data/data.dat').data;
 
-Vin = data(:, 1);
+Vin  = data(:, 1);
 Vout = data(:, 2);
-t  = data(:, end);
+t    = data(:, end);
 
 %% Notes
-pre_amp = struct('coupling', 'DC A', ...
-                 'gain', 50000, ...
-                 'LPF', '6dB 0.1Hz', ...
-                 'input', 'SSI2V (20bits, +/- 10V)', ...
-                 'HPF', '6dB 30kHz');
+pre_amp = struct('coupling', 'AC', ...
+                 'gain', 10^4, ...
+                 'LPF', '2.5Hz', ...
+                 'HPF', '100kHz');
 
 pd200 = struct('input', 'DAC', ...
-               'signal', 'sweep sine 0.1V 1Hz-5kHz', ...
-               'f_max', f1, ...
-               'load', '3 uF');
+               'load', '10 uF');
 
 notes = struct('pd200', pd200);
 
 %% Save
-save('mat/tf_pd200_7_0_1V.mat', 't', 'Vin', 'Vout', 'notes');
+save('mat/tf_pd200_7_10uF_small_signal.mat', 't', 'Vin', 'Vout', 'notes');

matlab/setup.m

@@ -3,7 +3,7 @@ Ts = 1/Fs; % [s]
 
 f0 = 1; % [Hz]
 V0 = 0.1; % Sweep Sine Amplitude [V]
-C = 2.7e-6; % Capacitance of the Load [F]
+C = 10e-6; % Capacitance of the Load [F]
 Imax_rms = 0.57; % [A]
 
 f1 = 0.8*Imax_rms/(C*V0*20/sqrt(2))/2/pi; % [Hz]
@@ -14,4 +14,3 @@ t = 0:Ts:t1;
 Vin = struct('time', t, ...
     'signals', struct('values', V0*chirp(t, f0, t1, f1, 'logarithmic', -90)', ...
                       'dimensions', 1));
-