Solution
The tutorial How To Measure Voltage provides a good and thorough description of the different terminal configurations, and explains when to use them. For a short summary/overview continue below.
Differential
Terminal Configuration | Referenced Single Ended (RSE)
Terminal Configuration | Non-Referenced Single Ended (NRSE) Terminal Configuration |
| Measures the potential difference between the AI+ and AI- | Measures the potential difference between the AI and the AI GND | Measures the potential difference between the AI and the AI SENSE |
In general, it is recommended to use differential configuration when possible. Differential signal connections reduce noise pickup and avoid ground loops. The following chart summarizes ways to connect a signal source to a measurement system.
To find your device pinouts of your specific hardware, open NI Measurement and Automation Explorer (MAX) and follow the steps outlined in
Where to Find NI-DAQmx Device Pinouts or Pin Mappings.