Agilent Technologies E4406A VSA manual Programming Examples

Programming Examples

Performing Alignments and Getting Pass/Fail Results

viStatus=viOpen (defaultRM, "GPIB0::18::INSTR", VI_NULL,VI_NULL, &viVSA); /*check opening session sucess*/

if(viStatus)

{

printf("Could not open a session to GPIB device at address 18!\n"); exit(0);

}

/*increase timeout to 75 sec*/ viSetAttribute(viVSA,VI_ATTR_TMO_VALUE,75000); /*Lock out the front panel keypad*/ viPrintf(viVSA, "SYST:KLOCK 1\n");

/*reset the analyzer*/ viPrintf(viVSA, "*RST\n"); /*print message*/

printf("The auto-alignement is in progress...\nPlease wait...\n\n"); /*auto-align the analyzer*/

viPrintf(viVSA, "CAL?\n"); /*check for alignement success*/ viScanf (viVSA,"%d",&lCalStatus);

/*alignement succeeds if query result is zero(0)*/ if (!lCalStatus)

/*print success message to standard output*/

printf("The analyzer auto-alignement was successful!\n\n"); else

/*print failure message to standard output*/

printf("The analyzer auto-alignement was not successful!\n\n"); /*Set the Analyzer to Continuous Sweep*/

viPrintf(viVSA, "INIT:CONT 1\n"); /*Unlock the front panel keypad*/ viPrintf(viVSA, "SYST:KLOCK 0\n"); /*reset timeout to 2 sec*/ viSetAttribute(viVSA,VI_ATTR_TMO_VALUE,3000); /* Close session */

viClose (viVSA); viClose (defaultRM);

}

144 Chapter 3