Agilent Technologies FS2010 Manual de Serviço descarregar pdf (Página 244)

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101

236 Agilent Signal Generators Programming Guide

Creating and Downloading Waveform Files

Creating Waveform Data

Line Code—Create I and Q data

const int NUMSAMPLES=500;

main(int argc, char* argv[]);

{

short idata[NUMSAMPLES];

short qdata[NUMSAMPLES];

int numsamples = NUMSAMPLES;

for(int index=0; index<numsamples; index++);

{

idata[index]=23000 * sin((2*3.14*index)/numsamples);

qdata[index]=23000 * cos((2*3.14*index)/numsamples);

}

Line Code Description—Create I and Q data

1 Define the number of waveform points. Note that the maximum number of waveform points that you can set

is based on the amount of available memory in the signal generator. For more information on signal generator

memory, refer to “Waveform Memory” on page 220.

2 Define the main function in C++.

4 Create an array to hold the generated I values. The array length equals the number of the waveform points.

Note that we define the array as type short, which represents a 16–bit signed integer in most C++ compilers.

5 Create an array to hold the generated Q values (signed 16–bit integers).

6 Define and set a temporary variable, which is used to calculate the I and Q values.

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