National Instruments NI 1450 Series 用户手册

© National Instruments Corporation

Figure 3-4 shows the power connector on the NI 1450, and Table 3-2 
describes each terminal on the connector.

Figure 3-4.  Power Connector

Some system setups may require using the grounding lug on the NI 1450 to 
connect the chassis to earth ground. Connecting the grounding lug, shown 
in Figure 3-5, to earth ground connects the common of the main power to 
earth ground through the NI 1450 chassis.

An earth ground connection does not connect Ciso to earth ground.

Table 3-2.  Power Connector Terminals

V

Main power (24 VDC ±10%)

C

Common

Viso

Isolated power (5 to 30 VDC)

Ciso

Isolated common

V

iso

(5-30 VDC)

C

C

iso

POWER

V

(24 VDC ±10%)

V

iso

(5-30 VDC)

C

V 

(24 VDC ±10%)

C

iso

POWER