Keysight E4428C ESG RF - Generating an Internal FM Signal Using VISA and C

98 Keysight Signal Generators Programming Guide
Programming Examples
GPIB Programming Interface Examples
viPrintf(vi, "POW:AMPL -2.5 dBm\n"); // Sets the power level to -2.5 dBm
viPrintf(vi, "FM:STAT ON\n"); // Turns on frequency modulation
viPrintf(vi, "OUTP:STAT ON\n"); // Turns on RF output
// Print user information
printf("Power level : -2.5 dBm\n");
printf("FM state : on\n");
printf("RF output : on\n");
printf("Carrier Frequency : 700 MHZ\n");
printf("Deviation : 20 kHZ\n");
printf("EXT2 and AC coupling are selected\n");
printf("\n"); // Prints a carrage return
// Close the sessions
viClose(vi);
viClose(defaultRM);
}
Generating an Internal FM Signal Using VISA and C
In this example the VISA library is used to generate an internal FM signal at a carrier frequency of
900 MHz and a power level of −15 dBm. The FM rate will be 5 kHz and the peak deviation will be
100 kHz. Launch Microsoft Visual C++ 6.0, add the required files, and enter the following code into
your .cpp source file. visaex6.cpp performs the following functions:
• error checking
• resets the signal generator
• sets up the signal generator for FM path 2 and internal FM rate of 5 kHz
• sets up FM path 2 deviation to 100 kHz
• sets carrier frequency to 900 MHz
• sets the power level to - 15 dBm
• turns on frequency modulation and RF output
The following program example is available on the signal generator Documentation CD- ROM as
visaex6.cpp.
//****************************************************************************************
// PROGRAM FILE NAME:visaex6.cpp
//
// PROGRAM DESCRIPION:This example generates an internal FM signal at a 900
// MHz carrier frequency and a power level of -15 dBm. The FM rate is 5 kHz and the peak
// deviation 100 kHz
//
//****************************************************************************************
#include <visa.h>
#include "StdAfx.h"
#include <iostream>
#include <stdlib.h>