Analog Input
The NI PXIe-7862 provides connections for 16 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-7862, 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-7862
PGIA
ADC
AI+
NI PXIe-7862
Connection
Accessory
AISENSE
AIGND
V
1
+
–
Overvoltage
Protection
AI–
Overvoltage
Protection
Overvoltage
Protection
To connect non-referenced single-ended voltage signals to the NI PXIe-7862, 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-7862
PGIA
ADC
AI+
NI PXIe-7862
Connection
Accessory
AISENSE
AIGND
V
cm
V
1
+
–
+
–
Overvoltage
Protection
AI–
Overvoltage
Protection
Overvoltage
Protection
4
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NI PXIe-7862 User Manual
Summary of Contents for PXIe-7862R
Page 1: ...PXIe 7862R ...
