Channel
AI +
AI-
3
AI3
AI11
4
AI4
AI12
5
AI5
AI13
6
AI6
AI14
7
AI7
AI15
16
AI16
AI24
17
AI17
AI25
18
AI18
AI26
19
AI19
AI27
20
AI20
AI28
21
AI21
AI29
22
AI22
AI30
23
AI23
AI31
Table 2. Differential Pairs
Grounded Differential Connections
Voltage
Source
+
–
AI+
AI–
COM
NI 9209
Floating Differential Connections
1 M
Ω
Resistor
NI 9209
AI+
AI–
COM
Voltage
Source
+
–
ni.com
8
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