Agilent Technologies E1300B Especificações descarregar pdf (Página 40)

Using Single Function to Send and Receive Data

The ipromptf function sends formatted SCPI commands and immediately reads the returned data as

formatted data. This function is a combination of the

iprintf and iscanf functions.

Program Example to Send and Read Unformatted Data

The following program example uses the “iread” function to read unformatted raw data.

#include < stdio.h>

#include < string.h>

#include < sicl.h> /* Included with SICL * /

#defineDEV_ADDR "hpib7,9,0" /* Assign the instrument GPIB address * /

/*****************************************************************/

void main(void)

{

INST addr;

unsigned long actual;

int length = 256;

char into[256],

* cmd = “ SYSTem:ERRor?\n” ; /* SCPI command * /

#if defined(__BORLANDC__) && !defined(__WIN_32)

_InitEasyWin(); /* Required for Borland EasyWin program * /

#endif

/* Enable communication path to the instrument * /

addr= iopen(DEV_ADDR);

/* Send SCPI command * /

iwrite(addr, cmd, strlen(cmd), 1, NULL);

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Sending/Receiving Formatted Data

ipromptf(addr, “ * OPC?\n” , “ %i” , &into);

Function

Session ID

SCPI Command

plus Line Feed

Variable to received returned data

Returned data format specifier

2-8 Sending SCPI Commands

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Agilent Technologies E1300B Especificações Página 40