Connecting A Sourcing-Output Device; Connecting Digital Devices - National Instruments NI 9375 Getting Started Manual

Connecting a Sourcing-Output Device

You can connect 2- and 3-wire sourcing-output devices to the
NI 9375.
Figure 1. Connecting a Sourcing-Output Device to the NI 9375
The NI 9375 channel registers as ON when the sourcing-output
device drives enough current or applies enough voltage to DI. If
no device is connected to DI, the channel registers as OFF.

Connecting Digital Devices

You can connect a variety of industrial devices, such as solenoids,
motors, actuators, relays, and lamps to the NI 9375. You must
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Sourcing-Output
Device
External
+
Power
–
Supply
DI
DI COM
NI 9375