Example: DC
Isolation Test
This example performs the DC Isolation Test for Normally Open and
Normally Closed channels to both Common and chassis (earth ground).
/* DC Isolation Test E1364A */
#include <stdio.h>
#include <sicl.h>
#define ADDR "hpib7,9,15"
/* Address of device */
#define DMM "hpib7,22"
void main (void)
{
INST id, dm;
/* Define id and dm as an instrument */
char reading[256] = {0}; /* Result variable */
int channel, i;
#if defined(__BORLANDC__) && !defined(__WIN32__)
_InitEasyWin();
#endif
ionerror(I_ERROR_EXIT);
id = iopen (ADDR);
/* Open instrument session */
dm = iopen (DMM);
iprintf (dm, "PRESET NORM;TRIG HOLD\n");
iprintf (dm, "FUNC OHM;RANGE 1E9\n");
printf ("\n\nConnect DMM HI and LO to E1364A NO and C lines");
getchar ();
iprintf (id, "*RST\n");
ipromptf (id, "*OPC?\n", "%t", reading);
ipromptf (dm, "TRIG SGL\n", "%t", reading);
printf ("\nDC Isolation -- Normally Open Channels to Common");
printf ("\n R = %s", reading);
printf ("\n\nConnect DMM HI and LO to E1364A NC and C lines");
getchar ();
iprintf (id, "CLOS (@100:115)\n");
ipromptf (id, "*OPC?\n", "%t", reading);
ipromptf (dm, "TRIG:SGL\n", "%t", reading);
printf ("\nDC Isolation -- Normally Closed Channels to Common");
printf ("\n R = %s", reading);
50 Example C Programs Appendix A
