Keysight N6705C Operating And Service Manual page 132

4 Using the Measurement Functions
The instrument will continuously display the auxiliary voltage measurement on the front panel Meter
View.
When the auxiliary voltage measurement terminals are left unconnected, the front
panel meter will indicate a voltage reading of approximately 1.6V. This is a normal
indication which does not affect the external voltage measurement once the
measurement terminals are connected.
From the remote interface:
To specify the auxiliary voltage measurement input:
SENS:FUNC:VOLT:INP AUX,(@1)
132 Keysight N6705C Operating and Service Guide