Agilent Technologies FS2010 Manual de servicio descargar pdf (Pagina 127)

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101

Agilent Signal Generators Programming Guide 119

Programming Examples

LAN Programming Interface Examples

// NOTE: You must have the Agilent Libraries installed on your computer to run

// this program

// PROGRAM DESCRIPTION:This example uses the VXI-11 protocol and VISA to query

// the signal generator for its ID string. The ID string is then printed to the

// screen. Next the signal generator is set for a -5 dBm power level and then

// queried for the power level. The power level is printed to the screen.

// IMPORTANT: Set up the LAN Client using the IO Config utility

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

#include <visa.h>

#include <stdio.h>

#include "StdAfx.h"

#include <stdlib.h>

#include <conio.h>

#define MAX_COUNT 200

int main (void)

{

ViStatus status;// Declares a type ViStatus variable

ViSession defaultRM, instr;// Declares a type ViSession variable

ViUInt32 retCount;// Return count for string I/O

ViChar buffer[MAX_COUNT];// Buffer for string I/O

status = viOpenDefaultRM(&defaultRM); // Initialize the system

// Open communication with Serial

// Port 2

status = viOpen(defaultRM, "TPCIP0::19::INSTR", VI_NULL, VI_NULL, &instr);

if(status){ // If problems then prompt user

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

printf("Check instruments and connections\n");

printf("\n");

exit(0);}

// Set timeout for 5 seconds

viSetAttribute(instr, VI_ATTR_TMO_VALUE, 5000);

// Ask for sig gen ID string

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