Matlab get the trace data via remote control

Question

How can I read out the trace data from my VNA via remote control from Matlab?

Answer

Here's a short example:

function ZVx_RAW(ZVx)

% Author: Winfried Jansen

% Date: 13.09.2022

% Version 01

% Tested with: ZVA8 with V4.11and ZNA26 V2.61

% In this function we use the reset settings, make a single sweep and get

% the trace data

%

% General Information:

% This example does not claim to be complete. All information has been compiled with care. However errors can not be ruled out.

% Open a RAW socket connection

ZVx=tcpip('10.205.0.194',5025);

ZVx.InputBufferSize=10000;

fopen(ZVx);

% Make a preset and a single sweep

fprintf(ZVx, '*RST;*WAI');

fprintf(ZVx, 'FORM:DATA Real,32');

fprintf(ZVx, 'FORM:BORD NORM');

fprintf(ZVx, 'INIT:CONT OFF');

fprintf(ZVx, 'INIT:IMM;*OPC?');

a=fscanf(ZVx);

% Get the trace data as formated data

fprintf(ZVx, 'CALC:DATA? FDAT');

% first we read the '#' from the header

Hash=fscanf(ZVx,'%c',1);

% get the byte with the information how many bytes with the length

% information follow

ByteNumber=str2num(fscanf(ZVx,'%c',1));

% get the number of measurement points from the file length

FileLength=str2num(fscanf(ZVx,'%c',ByteNumber))/4;

% read the measurement points and put it in an array

Trace1=fread(ZVx,FileLength,'float32');

% read the termination

TermChar=fscanf(ZVx,'%c',1);

% Get the frequency values

fprintf(ZVx, 'CALC:DATA:STIM?');

% first we read the '#' from the header

Hash=fscanf(ZVx,'%c',1);

% get the byte with the information how many bytes with the length

% information follow

ByteNumber=str2num(fscanf(ZVx,'%c',1));

% get the number of measurement points from the file length

FileLength=str2num(fscanf(ZVx,'%c',ByteNumber))/4;

% read the measurement points and put it in an array

Tracef=fread(ZVx,FileLength,'float32');

% read the termination

TermChar=fscanf(ZVx,'%c',1);

% plot the result in a 2D diagramm

plot(Tracef,Trace1)

title('Trace 1')

xlabel('f / Hz')

ylabel('dB');

% Check for errors

fprintf(ZVx, 'SYST:ERR?');

ErrorMsg=fscanf(ZVx);

% Close the connection and clean up:

fclose(ZVx);

delete(ZVx);

end