[SENSe:]CURRent:{AC|DC}:NULL:VALue:AUTO{ON|1|OFF|0}
[SENSe:]CURRent:{AC|DC}:NULL:VALue:AUTO?
Enables or disables automatic null value selection for AC or DC current measurements.
This parameter is not shared between AC and DCmeasurements. The parameters are independent for AC
and DCmeasurements.
On the 34461A, use the [SENSe:]CURRent:{AC|DC}:TERMinals command to specify which current
terminals to use for the measurement.
Parameter Typical Return
{ON|1|OFF|0}, default ON 0(OFF)or1(ON)
Configure AC current measurements, using the null function to subtract 100 mA from the measurements. Then
make two measurements and send them to the instrument's output buffer:
CONF:CURR:AC
CURR:AC:NULL:STAT ON;VAL 100 mA
SAMP:COUN 2
READ?
Typical Response: +1.04530000E+00,+1.04570000E+00
Make a second set of measurements using automatic null value selection:
CURR:AC:NULL:VAL:AUTO ON
READ?
Typical Response: +0.00000000E+00,+0.01420000E+00
l When automatic reference selection is ON, the first measurement made is used as the null value for all
subsequent measurements. [SENSe:]CURRent:{AC|DC}:NULL:VALue will be set to this value. Automatic null
value selection will be disabled.
l When automatic null value selection is disabled (OFF), the null value is specified by this command: [SENSe:]
CURRent:{AC|DC}:NULL:VALue.
l The instrument enables automatic null value selection when the null function is enabled ([SENSe:]CURRent:
{AC|DC}:NULL:STATe ON).
l This parameter is set to its default value after a Factory Reset (*RST), Instrument Preset (SYSTem:PRESet), or
CONFigure function.
Agilent Truevolt Series DMM Operating and Service Guide 191
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