Keysight Technologies 3458A Guide D'utilisation page 85

Configuring for Measurements 3
Specifying the range
You specify a fixed range using the first parameter of one of the function
commands (ACV, DCV, OHM. etc.) or the RANGE command. This parameter is
called max._inputsince you specify it as the input signal's maximum expected
amplitude (or the maximum resistance for resistance measurements). The
multimeter then chooses the correct range. When specifying max._input, use the
absolute value of the input signal—no negative numbers. For example, to specify
DC voltage with a maximum input of -2.5 volts, send:
OUTPUT 722; "DCV 2.5"
In this case, the multimeter selects the 10 VDC range. To specify a different
max_input (e.g. 15 V) without changing the measurement function, send:
OUTPUT 722; "RANGE 15"
In this case, the multimeter selects the 100 V range.
For frequency and period measurements, the max._input parameter specifies the
NOTE
maximum amplitude of the input signal. It does not specify the frequency range
(Hz) or the period range (seconds).
You select the autorange mode by defaulting the max._input parameter or by
specifying AUTO. For example, to select, autorange using the DCV command,
send:
OUTPUT 722; "DCV"
Refer to the FUNC or RANGE command in Chapter 6 for tables showing the
ranges for each measurement function.
Keysight 3458A User's Guide 85