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162 Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide

Programming Examples

LAN Programming Interface Examples

% filename must reference an 89600 Equalization filter saved as .mat

file with the header included.

% destRate is assumed to be 200e6 if missing

% output of corrFilter is in time domain.

% Typically followed with:

% writeMxgFir('a-n5182b-00211', 'cft', corrFilter);

if (nargin<1 || nargin>2)

error('[corrFilter] = loadVsaEqFilter(filename[, destRate]) --

destRate is assumed to be 200e6 if missing');

end

if (nargin<2)

destRate=200e6;

end

% load filter struct from .mat file

filterStruct=load(filename);

coeffs = double(filterStruct.Y);

if (filterStruct.XDomain==1) % frequency

rate = filterStruct.XDelta*length(coeffs); % frequency range is

also rate

% VSA software supplies centered frequency domain

else % time domain is 2

rate = 1/filterStruct.XDelta; % inverse of time step is

frequency

% convert to frequency domain

% must center frequency domain (to match what comes from the VSA

% software)

coeffs = fftshift(fft(coeffs));

end

% invert

invertedFreqDomain = 1./coeffs;

% convert to time domain (first placing the 0 frequency at the left

edge)

timeDomain=ifft(ifftshift(invertedFreqDomain));

if (filterStruct.XDomain==1) % frequency

% put time domain 0 time in center

len=length(timeDomain);

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