[SENSe:]{FREQuency|PERiod}:NULL:VALue:AUTO {ON|1|OFF|0}
[SENSe:]{FREQuency|PERiod}:NULL:VALue:AUTO?
Enables or disables automatic null value selection for frequency and period measurements.
Unlike the SENSe:FREQuency and SENSe:PERiod range and aperture commands, this parameter is not
shared between frequency and period measurements. The null parameters are independent for
frequency and period measurements.
Parameter Typical Return
{ON|1|OFF|0}, default OFF 0ī(OFF)īorī1ī(ON)
Configure frequency measurements, using the null function to subtract 1 kHz from them. Make and read two
measurements:
CONF:FREQ
FREQ:NULL:STAT ON;VAL 1 kHz
SAMP:COUN 2
READ?
Typical Response: +1.04530000E+00,+1.04570000E+00
Make a second set of measurements using automatic null value selection:
FREQ: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:]{FREQuency|PERiod}: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:]
{FREQuency|PERiod}:NULL:VALue.
l The instrument enables automatic null value selection when the null function is enabled ([SENSe:]
{FREQuency|PERiod}:NULL:STATe ON).
l This parameter is set to its default value after a Factory Reset (*RST), Instrument Preset (SYSTem:PRESet), or
CONFigure function.
200 Agilent Truevolt Series DMM Operating and Service Guide
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