Connecting Dierential Devices
You can connect dierential devices to the NI-9361. For dierential 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 Dierential Device
2 A
Max
Vsup
COM
Vout
Vin
GND
Differential
Device
External
Power
Supply
NI 9361
+
–
DI0+
DI0–
+
–
COM
The NI-9361 measures the dierence between the DI+ and DI- terminals to
determine if that dierence is greater or less than the digital logic levels. If the
dierence between the terminals is within the input high range, the channel
registers as high. If the dierence between the terminals is within the input low
range, the channel registers as low.
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NI-9361 Getting Started