Agilent Technologies ESA-E Series Programmer's Manual page 132

Programming Examples
Measuring Harmonic Distortion (HP-IB)
printf("\t Fundamental Frequency is: %lf MHz \n\n",dFundamental/10e5);
/*Relative amplitude of each harmonic in dBc*/
for (lNum=2;lNum<=lMaxHarmonic;lNum++)
printf("\t Relative amplitude of Harmonic[%d]: %lf dBc
\n\n",lNum,fRelAmptd[lNum]);
/*Total harmonic distortion in percent*/
printf("\t Total Harmonic Distortion: %lf percent \n\n",dPrcntDistort);
/*Close the session*/
viClose(viESA);
viClose(defaultRM);
}
Chapter 3 3-77