National Instruments 1142 用户手册

You can configure the SCXI-1141/1142/1143 for parallel mode using 
either NI-DAQmx or Traditional NI-DAQ (Legacy). For more information, 
refer to Chapter 4, 

.

You can use the AutoZero functionality of the SCXI-1141/1142/1143 once 
at the beginning of a measurement to compensate for any offset and achieve 
the best accuracy. For more information about the AutoZero mode, refer to 
Chapter 3, 

.

For more information about cascading the SCXI-1141/1142/1143, refer to 

ni.com/info

 and use info code 

exy7sh

.

Table C-1 shows the digital lines used by the SCXI-1141/1142/1143 for 
communication and scanning. These lines are unavailable for 
general-purpose digital I/O if the SCXI-1141/1142/1143 is connected to 
the E/M Series DAQ device.

Table C-1.  Digital SIgnals on the SCXI-1141/1142/1143

DIO0

P0.0

SER DAT IN

25

52

Output

DIO4

P0.4

SER DAT OUT

26

19

Input

DIO1

P0.1

DAQ D*/A

27

17

Output

DIO2

P0.2

SLOT 0 SEL*

29

49

Output

SCAN CLK

AI HOLD 
COMP, 
AI HOLD

SCAN CLK

36

46

Output

EXT STROBE*

EXT STROBE*

SER CLK

37

45

Input

1

 With respect to the E/M Series DAQ device.