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Connecting Grounded Differential Signals
You can connect grounded differential signals to the NI 9205.
Figure 2.
Connecting Grounded Differential Signals to the NI 9205
NI 9205
MUX
ADC
PGIA
V
cm
AI0 (CH0+)
AI8 (CH0–)
AI1 (CH1+)
AI9 (CH1–)
COM
V
1
V
2
–
–
+
+
In a differential configuration, the NI 9205 rejects the common-
mode noise voltage, V
cm
, during the measurement of V
1
. To
connect grounded differential signals to the NI 9205, you must
also connect the signal reference to COM.
NI 9205 Getting Started Guide
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