Connecting Analog Voltage Input Signals for Isolated Devices

Connecting Analog Voltage Input Signals

The following table summarizes the recommended input configuration for both types of signal sources:

Input	Signal Source Type
	Floating Signal Sources (Not Connected to Building Ground)	Ground-Referenced Signal Sources
	Examples: Ungrounded thermocouples Signal conditioning with isolated outputs Battery devices	Example: Plug-in instruments with non-isolated outputs
Differential (DIFF)
Referenced Single-Ended (RSE)

Refer to Terminal Configurations (Analog Input Ground Reference Settings) for Isolated Devices for descriptions of the RSE and DIFF modes.