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Chapter 3 137
Programming Examples
Using Limit Lines
/* For the analyzers having frequency limits >= 3GHz, prompt the user*/
/* to connect the amplitude reference output to the input*/
printf ("Connect AMPTD REF OUT to the INPUT \n");
printf ("......Press Return to continue \n");
scanf( "%c",&cEnter);
/*Externally route the 50MHz Signal*/
viPrintf(viESA,"CAL:SOUR:STAT ON \n");
}
}
void printResult()
{
viQueryf(viESA, "CALC:CLIM:FAIL?\n", "%ld", &lLimitTest);
if (lLimitTest!=0)
{
printf ("\n\t..Limit Line Failed.....\n");
viQueryf(viESA, "CALC:LLINE1:FAIL?\n", "%ld", &lLimitTest);
if (lLimitTest==0)
printf ("\n\t......Limit Line1 Passed \n");
else printf ("\n\t......Limit Line1 Failed \n");
viQueryf(viESA, "CALC:LLINE2:FAIL?\n", "%ld", &lLimitTest);
if (lLimitTest==0)
printf ("\n\t......Limit Line2 Passed \n");
else printf ("\n\t......Limit Line2 Failed \n");
}
else
printf ("\n\t..Limit Test Pass\n");
}
void main()
{
/*Program Variable*/
ViStatus viStatus = 0;
long lOpc =0L;
/* Open a GPIB session at address 18*/
viStatus=viOpenDefaultRM(&defaultRM);
viStatus=viOpen(defaultRM,"GPIB0::18",VI_NULL,VI_NULL,&viESA);
if(viStatus)
{
printf("Could not open a session to GPIB device at address 18!\n");
exit(0);
}