How do I view .trc files?
115 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi. It's been a while since I've used matlab. I have some graphs in .trc files and I've been given a function that is supposed to be able to plot these files, but I'm having a hard time figuring out how it's done. Here's the function:
1 Commento
Walter Roberson
il 12 Mag 2017
Code is:
function ExamplePlotImpedances(code,no)
% function ExamplePlotImpedances(src)
%
% Example program
% Load and plot a group of impedance measurements from HP8753,
% saved as S11-parameters
% From functions written in LabVIEW at HBV-IMST
Zref = 50; % Ohm Reference impedance
%-- Build fileames --
Nf = length(no);
for k=1:Nf
src{k}= sprintf('%s%04d.trc', code, no(k));
end
for k=1:Nf
%--- Load raw data ---
trc(k)= readtrace(src{k});
%--- Create frequency vector, calculate Z, and plot impedance ---
f{k}= [0:trc.Np-1]*trc.dx+trc.x0; % Hz Frequency vector
end
S11{k} = double(trc.y(:,1)+ 1i*trc.y(:,2));
Z = Zref* (1+S11{k})./(1-S11{k}); % Ohm Complex impdance
end
keyboard
subplot(2,2,1)
semilogy(f,abs(Z));
xlabel('Frequency [Hz]')
ylabel('Impedance magnitude [Ohm]')
grid on
subplot(2,2,3)
phi = angle(Z);
plot(f,rad2deg(phi));
xlabel('Frequency [Hz]')
ylabel('Phase [deg]')
ylim([-90 90])
set(gca, 'ytick', [-90:30:90])
grid on
subplot(2,2,2)
plot(f, real(Z), 'b-', f, imag(Z), 'r-');
xlabel('Frequency [Hz]')
ylabel('Impedance [Ohm]')
grid on
subplot(2,2,4)
plot(f, real(S11), 'b-', f, imag(S11), 'r-');
xlabel('Frequency [Hz]')r
ylabel('S11')
ylim([-1 1])
grid on
keyboard
return
Risposte (1)
Walter Roberson
il 12 Mag 2017
8 Commenti
Alessandro Verniani
il 15 Ott 2021
The attached .trc file has both strings and integers, causing the readtrc function to error. If there are any solutions, please advise!
Walter Roberson
il 15 Ott 2021
That appears to be a binary .trc file, but the File Exchange contribution https://www.mathworks.com/matlabcentral/fileexchange/48919-readtrc-read-r-s-trc-files-into-a-matlab-cell-array is expecting only text files.
Your .trc file is LECROY_2_3 format. You should get ReadLeCroyBinaryWaveform by Jean-Daniel Deschênes from the File Exchange.
Vedere anche
Categorie
Scopri di più su Data Import and Export in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!