Agilent Technologies ESA-E Series Programmer's Manual page 70

/*Make sure the previous command has been completed*/
viQueryf(viESA, "*OPC?\n", "%d", &lOpc);
if (!lOpc)
{
printf("Program Abort! error ocurred: last command was not completed!\n");
exit(0);
}
/*Set the marker to the maximum peak*/
viPrintf(viESA,"CALC:MARK:MAX \n");
/*Query and read the marker frequency*/
viPrintf(viESA,"CALC:MARK:X? \n");
viScanf(viESA,"%lf",&dMarkerFreq);
printf("\n\t RESULT: Marker Frequency is: %lf MHZ \n\n",dMarkerFreq/10e5);
/*Query and read the marker amplitude*/
viPrintf(viESA,"CALC:MARK:Y?\n");
viScanf(viESA,"%lf",&dMarkerAmpl);
printf("\t RESULT: Marker Amplitude is: %lf dBm \n\n",dMarkerAmpl);
/*Close the session*/
viClose(viESA);
viClose(defaultRM);
}
Chapter 3
Programming Examples
Using Marker Peak Search and Peak Excursion
3-15