Universal Analog Input Module User Guide and Specifications

Connecting Wires to the NI USB-9219 Connectors

Use a flathead screwdriver with a blade smaller than 2.3 × 1.0 mm (0.09 ×

0.04 in.) to connect wires to the detachable spring-terminal connectors.

Insert the screwdriver into a spring clamp activation slot and press a wire

into the corresponding connector terminal, then remove the screwdriver to

clamp the wire into the terminal. Refer to the Specifications section for

more information about spring-terminal wiring. Refer to Figure 7 for an

illustration of connecting wires to the NI USB-9219.

Figure 7. Connecting Wires to the NI USB-9219 Connectors

Table 4. Terminal Assignments

Mode

Terminal

1 2 3 4 5 6

Vo l t a g e T+ T– — HI LO —

Current T+ T– HI — LO —

4-Wire Resistance T+ T– EX+ HI EX– LO

2-Wire Resistance T+ T– HI — LO —

Thermocouple T+ T– — HI LO —

4-Wire RTD T+ T– EX+ HI EX– LO

3-Wire RTD T+ T– EX+ — EX– LO

Quarter-Bridge T+ T– HI — LO —

Half-Bridge T+ T– EX+ HI EX– —

Full-Bridge T+ T– EX+ HI EX– LO

Digital In T+ T– — HI LO —

Open Contact T+ T– HI — LO —