92 Keysight Signal Generators Programming Guide
Programming Examples
GPIB Programming Interface Examples
ibwrt(sig, "OUTP?",5); // Querys the on/off state of the instrument
ibrd(sig,rdVal,2); // Enter in the source state
rdVal[ibcntl] = '\0';
num = (int (rdVal[0]) -('0'));
if (num > 0){
cout<<"Source RF state is : On"<<endl;
}else{
cout<<"Source RF state is : Off"<<endl;}
cout<<endl;
ibwrt(sig, "*IDN?",5); // Querys the instrument ID
ibrd(sig, rdVal,100); // Reads the source ID
rdVal[ibcntl] = '\0'; // Null character indicating end of array
cout<<"Source ID is : "<<rdVal; // Prints the source ID
cout<<"Press any key to continue"<<endl;
cin.ignore(10000,'\n');
ibwrt(sig, "SYST:COMM:GPIB:ADDR?",20); //Querys source address
ibrd(sig, rdVal,100); // Reads the source address
rdVal[ibcntl] = '\0'; // Null character indicates end of array
// Prints the signal generator address
cout<<"Source GPIB address is : "<<rdVal;
cout<<endl;
cout<<"Press the 'Local' key to return the signal generator to LOCAL control”<<endl; cout<<endl;
return 0;
}
Queries for GPIB Using VISA and C
This example uses VISA library functions to query different instrument states and conditions. Launch
Microsoft Visual C++ 6.0, add the required files, and enter the following code into your .cpp source
file. visaex3.cpp performs the following functions:
• verifies the GPIB connections and interface are functional
• resets the signal generator
• queries the instrument (CW frequency, power level, frequency mode, and RF state)
• reads responses into the rdBuffer (CW frequency, power level, and frequency mode)
• turns signal generator RF state off
• verifies RF state off
The following program example is available on the signal generator Documentation CD- ROM as
visaex3.cpp.
//****************************************************************************************
// PROGRAM FILE NAME:visaex3.cpp
//
// PROGRAM DESCRIPTION:This example demonstrates the use of query commands. The signal
// generator can be queried for conditions and instrument states. These commands are of
// the type "*IDN?"; the question mark indicates a query.
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