User manual

Chapter 6 Application Programs

Example Program for C and C++

123

Example Program for C and C++

User’s Guide

c:\vxipnp\win(win95 winnt)\lib\msc

c:\vxipnp\win (win95 winnt)\include

Diode.c

/*Diode.C

This example program steps the power supply through 11 voltages and measures the current

response. It prints the voltage step and the current response as a table. Note that the

GPIB address is the default address from the factory for the power supply.*/

#include <visa.h>

#include <stdio.h>

#include <string.h>

#include <time.h>

#include <conio.h>

#include <stdlib.h>

ViSession defaultRM; /* Resource manager id */

ViSession power_supply; /* Identifies power supply */

int bGPIB = 1; /* Set the number to 0 for use with the RS-232 */

long ErrorStatus; /* VISA Error code */

char commandString[256];

char ReadBuffer[256];

void delay(clock_t wait);

void SendSCPI(char* pString);

void CheckError(char* pMessage);

void OpenPort();

void main()

{

double voltage; /* Value of voltage sent to power supply */

char Buffer[256]; /* String returned from power supply */

double current; /* Value of current output of power supply */

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