Programming instructions

Chapter 5 Things You Should Know about Analog Input
© National Instruments Corporation 5-3 LabVIEW Data Acquisition Basics Manual
Floating Signal Sources
Floating signal sources contain a signal, such as a voltage, that is not
connected to an absolute reference, such as earth or a building ground.
Some common examples of floating signals are batteries, battery-powered
sources, thermocouples, transformers, isolation amplifiers, and any
instrument that explicitly floats its output signal. Notice that in Figure 5-3
neither terminal of the floating source is connected to the electrical outlet
ground.
Figure 5-3.
Floating Signal Sources
Now that you know how your signal is referenced, read on to learn about
the different systems available to acquire these signals.
Vs
Ground
+
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