Agilent Technologies 5000 Series manual Visa Example in C

Programming Examples 9

VISA Example in C

/*

*Agilent VISA Example in C

*------------------------------------------------------------------

*This program illustrates most of the commonly-used programming

*features of your Agilent oscilloscope.

*This program is to be built as a WIN32 console application.

*Edit the RESOURCE line to specify the address of the

*applicable device.

*/
#include <stdio.h>	/*	For printf(). */
#include <visa.h>	/*	Agilent VISA routines. */

/* GPIB */

/* #define RESOURCE "GPIB0::7::INSTR" */

/* LAN */

/* #define RESOURCE "TCPIP0::a-mso6102-90541::inst0::INSTR" */

/* USB */

#define RESOURCE "USB0::2391::5970::30D3090541::0::INSTR"

#define WAVE_DATA_SIZE		5000
#define TIMEOUT		5000
#define SETUP_STR_SIZE		3000
#define IMG_SIZE	300000
/* Function prototypes		*/
void initialize(void);			/* Initialize the oscilloscope. */
void extra(void);			/* Miscellaneous commands not executed,
			shown for reference purposes. */
void capture(void);			/* Digitize data from oscilloscope. */
void analyze(void);			/* Make some measurements. */
void get_waveform(void);			/* Download waveform data from
			oscilloscope. */
void save_waveform(void);			/* Save waveform data to a file. */
void retrieve_waveform(void);			/* Load waveform data from a file. */
/* Global variables */
ViSession defaultRM, vi;			/* Device session ID. */
char buf[256] = { 0 };			/* Buffer for IDN string. */

unsigned char waveform_data[WAVE_DATA_SIZE]; /* Array for waveform

	data. */
double preamble[10];	/* Array for preamble. */

void main(void)

{

/* Open session. */ viOpenDefaultRM(&defaultRM); viOpen(defaultRM, RESOURCE, VI_NULL,VI_NULL, &vi); printf ("Oscilloscope session initialized!\n");

Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference 559