Connecting a Single-Ended Device to the
NI 9411
You can connect single-ended (TTL) devices to the NI 9411.
Figure 4.
Connecting a Single-Ended Device to the NI 9411
–
+
External
Power Supply
COM
V
sup
COM
NI 9411
Receiver
Circuitry
out
Single-Ended
Device
DIa
DIb
+5 V
Reg
+5 V
out
GND
+5 V
The NI 9411 compares the difference between DIa and COM to
the digital logic levels to determine if the signal is in the high
range or low range.
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NI 9411 Getting Started Guide
