Agilent Technologies E8257C Programming Guide

Chapter 2 59
Programming Examples
GPIB Programming Examples
// Modulation Condition Register
// bits '0','1','2','3' and '4'
viPrintf(vi, "STAT:QUES:MOD:COND?\n"); // Querys the register for any
// set bits
viScanf(vi, "%s", rdBuffer); // Reads the decimal sum of the
// set bits
num=(int (rdBuffer[1]) -('0')); // Converts string data to numeric
switch (num) // Based on the decimal value
{
case 1:
printf("Signal Generator Modulation 1 Undermod\n");
printf("\n");
break;
case 2:
printf("Signal Generator Modulation 1 Overmod\n");
printf("\n");
break;
case 4:
printf("Signal Generator Modulation 2 Undermod\n");
printf("\n");
break;
case 8:
printf("Signal Generator Modulation 2 Overmod\n");
printf("\n");
break;
case 16:
printf("Signal Generator Modulation Uncalibrated\n");
printf("\n");
break;
default:
printf("No Problems with Modulation\n");

Agilent Technologies E8257C Specifications

General

Modulation Types	AM, FM, PM, Pulse
Output Impedance	50 Ohms
Frequency Resolution	0.001 Hz
Amplitude Accuracy	±0.5 dB
Harmonics	-30 dBc
Power Requirements	100-240 VAC, 50/60 Hz
Subharmonics	-60 dBc