National Instruments AT E Series - Manual (Page 65)

Chapter 4 Connecting Signals
AT E Series User Manual 4-18 ni.com
Input Configurations
You can configure the AT E Series device for one of three input
modes—NRSE, RSE, or DIFF. The following sections discuss the use
of single-ended and differential measurements and considerations for
measuring both floating and ground-referenced signal sources.
Figure 4-5 summarizes the recommended input configuration for both
types of signal sources.