Agilent Technologies N5181A/82A, N5183A, E8663B Generating a Step-Swept Signal Using Visa and C++

Programming Examples

GPIB Programming Interface Examples

viPrintf(vi, "OUTP:STAT ON\n");	// Turns on		RF	output
printf("\n");	// Prints	a	carriage return
	// Print	user		information

printf("Power level : -15 dBm\n");

printf("FM state : on\n");

printf("RF output : on\n");

printf("Carrier Frequency : 900 MHZ\n");

printf("Deviation : 100 kHZ\n");

printf("Internal modulation : 5 kHz\n");

printf("\n");	// Print a carrage return
	// Close the sessions
viClose(vi);
viClose(defaultRM);
}

Generating a Step-Swept Signal Using VISA and C++

In this example the VISA library is used to set the signal generator for a continuous step sweep on a defined set of points from 500 MHz to 800 MHz. The number of steps is set for 10 and the dwell time at each step is set to 500 ms. The signal generator will then be set to local mode which allows the user to make adjustments from the front panel. Launch Microsoft Visual C++ 6.0, add the required files, and enter the following code into your .cpp source file. visaex7.cpp performs the following functions:

•clears and resets the signal generator

•sets up the instrument for continuous step sweep

•sets up the start and stop sweep frequencies

•sets up the number of steps

•sets the power level

•turns on the RF output

The following program example is available on the signal generator Documentation CD- ROM as visaex7.cpp.

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

//PROGRAM FILE NAME:visaex7.cpp

//PROGRAM DESCRIPTION:This example will program the signal generator to perform a step

//sweep from 500-800 MHz with a .5 sec dwell at each frequency step.

//

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

#include <visa.h> #include "StdAfx.h" #include <iostream>

void main ()

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 83