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Analog Input Signal Connection
The U2300A series DAQ provides up to 64 single–ended (SE) or 32 differential
analog input (DI) channels. The analog signal is converted to digital represented
value by the A/D converter. In order to obtain a more accurate measurement from
the A/D conversion, it is important to understand the type of signal source of
analog input modes RSE, NRSE, and DIFF.
Types of signal sources
Ground-referenced signal sources
A ground-referenced signal source is defined as a signal source that is connected
in some way to the building's grounding system. This means that the signal source
is connected to a common ground point with respect to the U2300A series DAQ
(assume the host PC which is connected with DAQ is in the same power ground).
Floating signal sources
A floating signal source is a signal that is not connected to the building's
grounding system. It is also a device with an isolated output. Example of floating
signal sources are optical isolator output, transformer output, and thermocouple.
Keysight U2300A Series User's Guide
Connector Pins Configuration
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