National Instruments NI 1450 Series 用户手册

For detailed information about digital I/O functionality and recommended 
use cases, refer to Chapter 4, 

.

Isolated inputs are compatible with 5 V logic if the external circuit meets the voltage 

and current requirements listed in Appendix B, 

.

Figure 3-8.  44-Pin DSUB Connector

Table  lists pin numbers, signal names, and signal descriptions for the 
44-pin connector on the NI 1450 and the 37-pin terminal block.

Do not draw more than 500 mA combined from the Viso pins on the 44-pin 

DSUB connector. Do not draw more than 100 mA from each isolated output.

Table 3-5.  44-Pin DSUB and 37-Pin Terminal Block Connector Signals

1

1

TTL Input 0

Pulse generator trigger input

General-purpose input

2

3

C

Common of the NI 1450 
main power

—

3

4

TTL Output 0

Watchdog output

General-purpose output

1

16

31

15

30

44

NI 1454
Compact Vision System