Power-on / Reset States

Example 1:

Reset, Self Test,

and Module ID

At power-on or reset (*RST) the HP E1459A is set to the following conditions:

•Watchdog timer is off (disabled).

•Clock Source is Internal

•Input Debounce Time is 18.0 μS.

•DAV (Data Available) Event interrupts are disabled for all ports.

•Edge Event interrupts are disabled for all ports.

Also, refer to the STATus:PRESet command in Chapter 3.

This first example resets the HP E1459A, performs the module self test, and reads the module ID and description.

/* Self Test

This program resets the HP E1459A, performs a Self Test, and reads the ID string

Created in Microsoft Visual C++ */

#include <visa.h> #include <stdio.h> #include <stdlib.h>

#define INSTR_ADDR "GPIB0::9::3::INSTR"

/* HP E1459A logical address */

int main()

 

{

 

ViStatus errStatus;

/* status from VISA call */

ViSession viRM;

/* Resource Mgr. session */

ViSession E1459;

/* session for HP E1459A */

char id_string [256] = {0};

/* ID string buffer */

char selftst_string[256] = {0};

 

/* Open a default Resource Manager */ errStatus = viOpenDefaultRM (&viRM);

if (VI_SUCCESS > errStatus){

printf("ERROR: viOpen() returned 0x%x\n",errStatus); return errStatus;}

/* Open the Instrument Session */

errStatus = viOpen (viRM, INSTR_ADDR,VI_NULL,VI_NULL, &E1459); if (VI_SUCCESS > errStatus){

printf("ERROR: viOpen() returned 0x%x\n",errStatus); return errStatus;}

/* Reset the E1459A */

errStatus = viPrintf (E1459, "*RST;*CLS\n"); if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus); return errStatus;}

30 Using the HP E1459A Module