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Auxiliary Voltage Measurements
This information only applies to Models N6781A and N6785A.
Models N6781A and N6785A have an auxiliary voltage measurement input, whose primary use is for
battery voltage rundown measurements. It may also be suitable for other applications including
general purpose DC voltage measurements between +/-20 VDC.
Auxiliary voltage measurements cannot be made along with output voltage measurements. When the
auxiliary voltage measurement input is selected, all voltage measurement functions receive their
input from this source instead of the normal + and − sense terminals. These functions include the front
panel, SCPI measurements, Scope View, Data Logger View, Elog, and histogram measurements.
The instrument will continuously display the auxiliary voltage measurement on the 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 front panel:
To enable auxiliary voltage measurements, select Meter View, then Properties, then select Aux
Voltage.
From the remote interface:
To specify the auxiliary voltage measurement input:
SENS:FUNC:VOLT:INP AUX,(@1)
Keysight N6705C User's Guide
4 Using the Measurement Functions
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