Agilent Technologies N5181A/82A, N5183A MXG, E8663B manual VXI-11 Programming Using Visa and C++

Programming Examples

LAN Programming Interface Examples

// Open SICL instrument handle using VXI-11 protocol

sprintf(instNameBuf, "lan[%s]:inst0", instrumentName); id = iopen(instNameBuf);// Open instrument session itimeout(id, 1000);// Set 1 second timeout for operations printf("Setting frequency to 1 Ghz...\n");

iprintf(id, "freq 1 GHz\n");// Set frequency to 1 GHz

printf("Waiting for source to settle...\n"); iprintf(id, "*opc?\n");// Query for operation complete iscanf(id, "%d", &opcResponse); // Operation complete flag if (opcResponse != 1)// If operation fails, prompt user

{

printf("Bad response to 'OPC?'\n"); iclose(id);

exit(1);

}

iprintf(id, "FREQ?\n");// Query the frequency

iscanf(id, "%t", &buf);// Read the signal generator frequency printf("\n");// Print the frequency to the display printf("Frequency of signal generator is %s\n", buf); ipromptf(id, "*IDN?\n", "%t", buf);// Query for id string printf("Instrument ID: %s\n", buf);// Print id string to display iclose(id);// Close the session

return 0;

}

VXI-11 Programming Using VISA and C++

The following program uses the VXI- 11 protocol and the VISA library to control the signal generator. The signal generator is set to a –5 dBm power level and queried for its ID string. Before running this code, you must set up the interface using the Agilent IO Libraries IO Config utility. vxivisa.cpp performs the following functions:

•sets signal generator to a –5 dBm power level

•queries signal generator for an ID string

•error checking

The following program example is available on the signal generator Documentation CD- ROM as vxivisa.cpp.

//****************************************************************************************

//PROGRAM FILE NAME:vxivisa.cpp

//Sample test program using the VISA libraries and the VXI-11 protocol

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 103