Stanford Research Systems SR830, Manual

Page: 109 / 177

5-26
Remote Programming
void main(int, char *[]);
void txLia(char *);
void initGpib(char *);
void setupLia(void);
void printOutBinaryResults(void);
void printOutIEEEResults(void);
void printOutLIAResults(void);
/* National Instruments Interface Function Prototypes (488.1 Calls - see the National software manual).
These are declared in "decl.h"
int
ibfind(char*);
void ibwrt(int,char *,int);
void ibrd(int,char *,unsigned long);
void ibrsp(int,char *);
void ibeos(int,int);
void ibtmo(int,int);
*/
/* global variables */
int lia; /* SR830 handle */
int rxBuf[660*2]; /* FAST mode data buffer */
float rfBuf[1000]; /* Floating point data buffer */
void main(int argc, char *argv[])
{
int nPts,i;
char tstr[20];
if (argc<2) {
printf("\nUsage: liatest <devName>\n");
exit(1);
}
else
initGpib(SR830);
txLia("OUTX1"); /* Set the SR830 to output responses to the GPIB port */
setupLia(); /* Setup the SR830 */
printf("\nAcquiring Data\n");
ibtmo(lia,0);
/* turn off timeout for lia or set the timeout longer than the scan (10 seconds). The
timeout measures the time to transfer the FULL number of bytes, not the time since
the most recent byte is received.*/
txLia("FAST2;STRD"); /* Turn FAST mode data transfer ON, then start scan using the STRD start
after delay command. The STRD command MUST be used if the scan is to
be started by this program! Do NOT use STRT. */
/* take data for 10 seconds and then stop */
ibrd(lia,(char *)rxBuf,2564L);
/* get FAST mode data for 10 seconds.
10 seconds of data at 64 Hz sample rate has 64*10 + 1 points,
each point consists of X (2 bytes) and Y (2 bytes) for a total of
4*(64*10+1) = 2564 bytes. */
i=(int)ibcnt; /* save total number of bytes read */