Agilent Technologies 8164A, B, 8166A, 8163A manual How Power Varies with Wavelength, 203

How Power Varies with Wavelength VISA Programming Examples

How Power Varies with

Wavelength

This example shows how the measured power depends on wavelength.

Install a Power Sensor in Slot 1 and a Tunable Laser Source in Slot 2 and connect the Tunable 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 */
ViReal64	wavelength;	/* used to hold the wavelength of the
tunable laser source */
ViReal64	wavelength_max;	/*used to hold the maximum
wavelength of the tunable laser source*/
ViInt32	i;	/* loop counter */
ViInt32	cmdDone;	/* return value for OPC command */

errStatus = viOpenDefaultRM (&defaultRM); if(errStatus < VI_SUCCESS)

{

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

}

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 203