You can configure the AI channels on the USB-6008/6009 to take differential or referenced single-ended (RSE) measurements. The following table summarizes the recommended analog input mode(s) for floating signal sources and ground-references signal sources. Refer to the table in the Pinout and Signal Descriptions section for more information about I/O configurations for single-ended or differential measurements.

Table 6. Analog Input Configurations
Analog Input Mode Floating Signal Sources (Not Connected to Building Ground) Ground-Referenced Signal Sources
Examples
  • Ungrounded thermocouples
  • Signal conditioning with isolated outputs
  • Battery devices
Plug-in instruments with non-isolated outputs
Differential (DIFF)



Referenced Single-Ended (RSE)