NI C Series - What You Need To Get Started

Connecting Dierential Devices
You can connect dierential devices to the NI-9361. For dierential connections,
connect the positive device out to the DI+ terminal on the NI-9361 and the negative
device out to the DI- terminal on the NI-9361.
Figure 4. Connecting a Dierential Device
2 A
Max
Vsup
COM
Vout
Vin
GND
Differential
Device
External
Power
Supply
NI 9361
+
–
DI0+
DI0–
+
–
COM
The NI-9361 measures the dierence between the DI+ and DI- terminals to
determine if that dierence is greater or less than the digital logic levels. If the
dierence between the terminals is within the input high range, the channel
registers as high. If the dierence between the terminals is within the input low
range, the channel registers as low.
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NI-9361 Getting Started