ADLINK ACL-8216 - Manual (Page 55)

C/C++ Library • 47
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 */
}