Figure 2-2 Ground-Referenced Sources And Nrse Input - Agilent Technologies U2300A Series User Manual

Connector Pins Configuration 2
• Non-Referenced Single-Ended (NRSE) Mode
In NRSE mode, the DAQ device does not provide the
grounding point. The ground reference point is
provided by the external analog input signal. You can
connect the signals in NRSE mode to measure
ground- referenced signal sources, which are connected
to the same grounding point. The following figure
illustrates the connection. The signal local ground
reference is connected to the negative input of the
instrumentation Amplifier (AI_SENSE pin on
connector1). Hence, any potential difference of the
common mode ground between signal ground and the
signal ground on DAQ board will be rejected by the
instrumentation amplifier.
Figure 2-2 Ground-referenced sources and NRSE input connections
U2300A Series DAQ User's Guide 35