User`s guide

Description
This command disables or enables voltage autoranging for period
measurements. Autoranging is convenient because the instrument
automatically selects the range for each measurement based on the input ac
voltage detected.
The maximum range parameter is 1000 V. However, the
SAFETY LIMIT on the front and rear HI/LO input terminals is
750 VAC (rms). The rms voltage is waveform dependent. A
sine wave is limited to 750 VAC (rms), but a 1000 Vpk
square wave is safe. Connections to AC MAINS are further
limited to CAT II (300V). See the "Safety Information"
section in the Agilent 34410A/11A/L4411A User's Guide for
a complete discussion of the safety features, and the safe
operation of this instrument.