Agilent Technologies FS2010 Manual de servicio descargar pdf (Pagina 162)

154 Agilent Signal Generators Programming Guide

Programming Examples

RS-232 Programming Interface Examples (ESG/PSG Only)

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

// PROGRAM NAME: rs232ex1.cpp

// PROGRAM DESCRIPTION: This code example uses the RS-232 serial interface to

// control the signal generator.

// Connect the computer to the signal generator using an RS-232 serial cable.

// The user is asked to set the signal generator for a 0 dBm power level

// A reset command *RST is sent to the signal generator via the RS-232

// interface and the power level will reset to the -135 dBm level.The default

// attributes e.g. 9600 baud, no parity, 8 data bits,1 stop bit are used.

// These attributes can be changed using VISA functions.

// IMPORTANT: Set the signal generator BAUD rate to 9600 for this test

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

#include <visa.h>

#include <stdio.h>

#include "StdAfx.h"

#include <stdlib.h>

#include <conio.h>

void main ()

{

int baud=9600;// Set baud rate to 9600

printf("Manually set the signal generator power level to 0 dBm\n");

printf("\n");

printf("Press any key to continue\n");

getch();

printf("\n");

ViSession defaultRM, vi;// Declares a variable of type ViSession

// for instrument communication on COM 2 port

ViStatus viStatus = 0;

// Opens session to RS-232 device at serial port 2

viStatus=viOpenDefaultRM(&defaultRM);

viStatus=viOpen(defaultRM, "ASRL2::INSTR", VI_NULL, VI_NULL, &vi);

if(viStatus){// If operation fails, prompt user

printf("Could not open ViSession!\n");

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Agilent Technologies FS2010 Manual de servicio Pagina 162