Keysight Technologies 8163A/B Programming Manual page 237

8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
/* two consecutive values are compared; if they are equal it
will be marked; because no evaluation is triggered, all
values will be the same */
if(i)
{ if(!strcmp(compBuf,replyBuf))
{ printf("Same:%s\n",replyBuf); }
else printf("New:%s\n",replyBuf);
}
else printf("First:%s\n",replyBuf);
strcpy(compBuf,replyBuf);
}
/* now the read command is used in the same manner to
demonstrate the difference between fetch and read */
/* read also 10 values, compare them and display the
result; */
for (i = 0; i < 10; i++)
{
/* In comparision to the "FETCH" command, the "READ"
command implies
the timeout set is greater than the adjusted averaging time,
so that the READ command will not time out; */
/* send the read command */
errStatus = viQueryf(vi,"READ1:CHAN1:POW?\
n","%t",replyBuf);
checkError(vi,errStatus);
if(i)
{
if(!strcmp(compBuf,replyBuf))
printf("Same:%s",replyBuf);
else printf("New
}
else printf("\nFirst:%s",replyBuf);
/*copy new value to compare buffer*/
strcpy(compBuf,replyBuf);
}
/* loop, until a key is pressed */
while(!scanf("%c",&c));
checkError(vi,errStatus);
/* close the session */
viClose(vi);
}
void checkError(ViSession session, ViStatus err_status )
{ ViStatus error;
VISA Programming Examples
triggering a measurement. Make sure
:%s",replyBuf);
6
237