National Instruments FP-AI-112 User Manual download pdf (Page 5)

Caution Cascading power between two modules defeats

isolation between those modules. Cascading power from

the network module defeats all isolation between

modules in the FieldPoint bank.

Measuring Voltage with the [c]FP-AI-112

Figure 3 shows how to connect a voltage source without an

external power supply to one channel of the [c]FP-AI-112.

Figure 3. Voltage Source without External Power Supply

Figure 4 shows how to connect a voltage source with an external

power supply to one channel of the [c]FP-AI-112.

Figure 4. Voltage Source with External Power Supply

SUP

>100 MΩ

Input

Impedance

COM

[c]FP-AI-112

Voltage

Source

–

Input

Circuitry

SUP

>100 MΩ

Input

Impedance

COM

[c]FP-AI-112

Input

Circuitry

Powered

Voltage

Transducer

OUT

–

External

Power Supply

(Optional)

2 A

Max

1 2 3 4 5 6 7 8 9 10 ... 15 16

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National Instruments FP-AI-112 User Manual Page 5