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92 Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide
Programming Examples
GPIB Programming Interface Examples
printf("* Set frequency to maximum value\n");
printf("* Turn On signal generator's RF Output\n");
printf("* Check signal generator's display for the UNLEVEL annunciator\n");
printf("\n");
printf("Press Enter when ready\n");
printf("\n");
getch(); // Waits for keyboard user input
viPrintf(vi, "STAT:QUES:POW:ENAB 2\n"); // Enables the Data Questionable
// Power Condition Register Bits
// Bits '0' and '1'
viPrintf(vi, "STAT:QUES:POW: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 Reverse Power Protection Tripped\n");
printf("/n");
break;
case 2:
printf("Signal Generator Power is Unleveled\n");
printf("\n");
break;
default:
printf("No Power Unleveled condition detected\n");
printf("\n");
}
viClear(vi); // Clears the signal generator
// Prints user information
printf("--------------------------------------------------------------\n");
printf("\n");
printf("Manually set up the sig gen for an unleveled output condition:\n");
printf("\n");
printf("* Select AM modulation\n");
printf("* Select AM Source Ext 1 and Ext Coupling AC\n");
printf("* Turn On the modulation.\n");
printf("* Do not connect any source to the input\n");
printf("* Check signal generator's display for the EXT1 LO annunciator\n");