HP Drive Instrukcja Użytkownika Pobierz pdf (Strona 54)

Chapter 5

•

session

in the Instrument Handle field

Display the Reading

1 Select the Reading parameter.

2 Select Code and click Declare Variable. The Declare Variable dialog appears.

3 Enter reading in the Variable Name field.

4 Check the boxes titled Execute declaration in Interactive Window and Add

declaration to top of target file “*.c”. Click OK.

5 Select Code and click Insert Function Call to insert the function and values into

your program. Close the function panel. The hp34401a_Read function appears

in your program.

Close the Session

1 From the library tree, select Close. The Close function panel opens.

2 Enter session in the Instrument Handle field.

3 Select Code and click Insert Function Call to insert the function and values into

your program. Close the function panel. The hp34401a_Close function

appears in your program. Your final program should contain the code below:

#include <ansi_c.h>

#include "hp34401a.h"

#include <cvirte.h>

static ViReal64 reading;

static ViSession session;

int main (int argc, char *argv[])

{

if (InitCVIRTE (0, argv, 0) == 0)

return -1; /* out of memory */

hp34401a_InitWithOptions (

"GPIB0::23::INSTR", VI_FALSE,

VI_TRUE, "Simulate=1", &session);

hp34401a_ConfigureMeasurement (session,

HP34401A_VAL_DC_VOLTS, 1.5, 0.001);

hp34401a_ConfigureTrigger (session,

HP34401A_VAL_IMMEDIATE, 0.01);

hp34401a_Read (session, 1000, &reading);

printf ("%f", reading);

hp34401a_close (session);

return 0;

}

Note:

To display the reading, add a printf function. Before the Close function, type:

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 113 114

Brak uwag

HP Drive Instrukcja Użytkownika Strona 54