User`s guide

C/C++ Library

•

5.8 _8216_AD_Input_Mode

@Description

This function is only useful for ACL-8216 ver. B series.This function is

used to set A/D input mode to single-ended or differential mode. The

default mode of A/D input is single-ended, so the A/D channel number

can be set between 0 to 15. If the A/D mode is set as differential, the

input channel can be selected from channel 0 to 7 only. You have to

call this function before the A/D operation is processed.

@ Syntax

int _8216_Input_Mode(int ad_mode )

@ Argument

ad_mode:

SINGLE_ENDED:

the analog inputs are

single-ended mode

DIFFERENTIAL:

the analog inputs are

single-ended mode

@ Return Code

ERR_NoError

ERR_BoardNoInit

@ Example

#include "8216.h"

main()

{

_8216_Initial( CARD_1, 0x210 );

/* Assume NoError when Initialize ACL-8216 */

_8216_Initial( CARD_2, 0x220 );

/* Assume NoError when Initialize ACL-8216 */

_8216_AD_Input_Mode( DIFFERENTIAL );

/* set analog input mode as “differential” mode

/* if this function is not called, the default

input mode is single-ended mode */

_8216_Switch_Card_No(CARD_1);

_8216_AD_Input_Mode( SINGLE_ENDED );

…

_8216_AD_Set_Channel( 3 );

printf( " AD channel 3 is now selected.\n" );

…

/*the following A/D’s operation is based on

channel 3 */

}