Agilent Technologies 8164A, B, 8166A, 8163A manual How to Co-ordinate Two Modules, 199

How to Co-ordinate Two Modules VISA Programming Examples

How to Co-ordinate Two

Modules

This example shows the interaction of two modules in the same frame.

Install a Power Sensor in Slot 1 and a Laser Source in Slot 2 and connect the Laser Source output to the Power Sensor input, before executing this example.

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <visa.h>

/* function prototypes for this examples */

/* function for a simple error handling explained in example 1 */ void checkError(ViSession session, ViStatus err_status );

void main (void)

{
ViStatus	errStatus;	/* returned error code from visa call */
ViSession	defaultRM;	/* default visa resource manager variable
*/
ViSession	vi;	/* current session handle */
ViChar	replyBuf[256]; /* buffer holding answers of the
instrument */
ViChar	c;	/* used in the keyboard wait loop */
ViInt32	i;	/* loop counter */
ViInt32	cmdDone;	/* return value for OPC command */

/* First get initialized the visa library (see example 1) */ errStatus = viOpenDefaultRM (&defaultRM); if(errStatus < VI_SUCCESS)

{

printf("Failed to open VISA Resource manager\n"); exit(errStatus);

}

/* Open session to GPIB device at address 20; */

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 199