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NI 9425E Operating Instructions and Specifications
Connect the sourcing-output device to the DI pin on the NI 9425E.
Connect the common of the external device to the COM pin. Refer
to Figure 3 for an illustration of connecting a device to the
NI 9425E.
Figure 3.
Connecting a Device to the NI 9425E
(Three-Wire Device Shown)
The NI 9425E channel registers as ON when the sourcing-output
device applies a voltage or drives a current that is in the input ON
range to the DI pin. The channel registers as OFF when the device
applies a voltage or drives a current that is in the input OFF range
to the DI pin. If no device is connected to the DI pin, the channel
NI 9425
+
_
COM
DI
Sourcing-Output
Device
External
Power
Supply
