Connecting Analog Voltage Input Signals for Isolated Devices

NI-DAQmx Device Considerations

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)

ai ai
Referenced Single-Ended (RSE) ai ai

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