Analog Input
The NI PXIe-7867R provides connections for six AI channels. Each channel has an AI+ pin,
AI- pin, and AIGND pin to which you can connect both single-ended or differential voltage
signals. Use the AISENSE pin to connect non-referenced single-ended signals.
Connecting Single-Ended Voltage Signals
To connect referenced single-ended voltage signals to the NI PXIe-7867R, you must connect
the voltage ground signal to AI GND in order to keep the common-mode voltage in the
specified range.
Figure 2. Connecting Referenced Single-Ended Signals to the NI PXIe-7867R
+
V
1
–
To connect non-referenced single-ended voltage signals to the NI PXIe-7867R, you must
connect the voltage ground signal to AI SENSE in order to keep the common-mode voltage in
the specified range.
Figure 3. Connecting Non-Referenced Single-Ended Signals to the NI PXIe-7867R
+
V
1
–
+
V
cm
–
4 | ni.com | NI PXIe-7867R User Manual
AI+
AI–
AISENSE
AIGND
Connection
Accessory
AI+
AI–
AISENSE
AIGND
Connection
Accessory
Overvoltage
Protection
Overvoltage
Protection
Overvoltage
Protection
Overvoltage
Protection
Overvoltage
Protection
Overvoltage
Protection
PGIA
ADC
NI PXIe-7867R
PGIA
ADC
NI PXIe-7867R