Keysight Technologies X-Series, Programming Manual

Page: 260 / 398

260 Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide
Creating and Downloading Waveform Files
Programming Examples
Creating and Storing I/Q Data—Little Endian Order
On the documentation CD, this programming example’s name is
“ CreateStore+.txt .”
This C++ programming example (compiled using Metrowerks CodeWarrior 3.0)
performs the following functions:
— error checking
— data creation
— byte swapping and interleaving for little endian order data
— binary data file storing to a PC or workstation
After creating the binary file, you can use FTP, one of the download utilities, or
one of the C++ download programming examples to download the file to the
signal generator.
#include <iostream>
#include <fstream>
#include <math.h>
#include <stdlib.h>
using namespace std;
int main ( void )
{
ofstream out_stream; // write the I/Q data to a file
const unsigned int SAMPLES =200; // number of sample pairs in
the waveform
const short AMPLITUDE = 32000; // amplitude between 0 and
full scale dac value
const double two_pi = 6.2831853;
//allocate buffer for waveform
short* iqData = new short[2*SAMPLES];// need two bytes for each
integer
if (!iqData)
{
cout << "Could not allocate data buffer." << endl;
return 1;
}