National Instruments NI 1450 Series 用户手册

© National Instruments Corporation

The Ethernet port on the NI 1450 provides connection between the NI 1450 
and the development computer, either directly or through a network port. 
The NI 1450 automatically detects the speed of the connection 
and configures itself accordingly.

If you are connecting the NI 1450 to the development computer through 
a network port, use a standard Ethernet cable. To connect the NI 1450 
directly to the development computer, use an Ethernet crossover cable.

The TRIG 0 isolated input on the NI 1450 provides connection to 
external devices, such as proximity sensors and start/stop buttons. For easy 
connection to the TRIG 0 input, use the National Instruments SMB 111 
coaxial cable (part number 763422-01).

Additional isolated inputs are available on the 44-pin DSUB connector. 

These isolated inputs are compatible with 5 V logic if the external circuit meets 

the voltage and current requirements listed in Appendix B, 

You can use the two TTL outputs available on the SMB connectors for 
triggering cameras and external interfaces, such as lighting control units. 
For easy connection to the TTL outputs, use the National Instruments SMB 
111 coaxial cable (part number 763422-01).

Additional TTL outputs are available on the 44-pin DSUB connector.

Do not connect voltage or current sources to TTL outputs. Doing so could 

damage the NI 1450.

The 44-pin DSUB connector, shown in Figure 3-8, provides access to the 
general-purpose digital inputs and outputs. The general-purpose digital I/O 
available on this connector includes two TTL inputs, eight TTL outputs, 
twelve isolated inputs, and four isolated outputs. For easy connection to the 
digital I/O connector, use the National Instruments digital I/O cable and 
terminal block.