Agilent-technologies N5183A MXG Manuale Utente Scaricare il pdf (Pagina 247)

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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 237

Creating and Downloading Waveform Files

Programming Examples

for (int i=0; i<SAMPLES; ++i)

{

iqData[2*i] = AMPLITUDE * sin(two_pi*i/(float)SAMPLES);

iqData[2*i+1] = AMPLITUDE * cos(two_pi*i/(float)SAMPLES);

}

// make sure bytes are in the order MSB(most significant byte) first. (PC only).

char* cptr = (char*)iqData;// cast the integer values to characters

for (int i=0; i<(4*SAMPLES); i+=2)// 4*SAMPLES

{

char temp = cptr[i];// swap LSB and MSB bytes

cptr[i]=cptr[i+1];

cptr[i+1]=temp;

}

// now write the buffer to a file

out_stream.write((char*)iqData, 4*SAMPLES);

return 0;

}

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Agilent-technologies N5183A MXG Manuale Utente Pagina 247

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