Справочник Пользователя для National Instruments NI 1450 Series

This section describes the connectors on the NI 1450 and includes pinouts 
and signal descriptions for each connector.

Table 3-1 summarizes the functions of the connectors on the NI 1450.

The power connector on the NI 1450 accommodates two power supplies. 
The terminals labeled V and C provide the voltage and common for the 
main power of the NI 1450. The terminals labeled Viso and Ciso provide 
the voltage and common to power the isolated output circuitry. 

The isolation provided by the NI 1450 is intended to prevent ground loops that 

could introduce noise into the system. This isolation does not provide safety isolation.

Table 3-1.  NI 1450 Connectors Overview

Power

4-position power 
connector

Main power and power for isolated outputs

IEEE 1394a

6-pin IEEE 1394

Power and data connection to IEEE 1394 
cameras

VGA

15-pin female DSUB 
(standard VGA)

Video output

Serial

9-pin male DSUB 
(standard RS-232 serial 
port)

COM1

10/100 Ethernet

RJ-45 (standard 
Ethernet port)

Ethernet network connection

TRIG 0

SMB receptacle

External isolated trigger input

TRIG 1 and TRIG 2

SMB receptacle

External TTL output

Digital Input/Output

44-pin female 
high-density DSUB

External TTL I/O; External isolated I/O