Keysight Technologies 3458A Guide D'utilisation page 250

6 Command Reference
Remarks
DEFEAT ON must only be used when you are certain that overload voltages
CAUTION
on the Input terminals will not exceed ±100 V peak on the 10 V range or
below. (On the 100 V and 1000 V ranges, the multimeter can withstand
voltages up to ±1200 V peak regardless of whether DEFEAT is ON or OFF.)
DEFEAT ON disables (defeats) the input switch sequencing that protects the
multimeter's input circuitry from overload voltages. If input protection is
disabled and an overload situation is detected on the 10 V range or below,
the multimeter will enable input protection and internally tally the overload
for instrument warranty considerations.
– Since DEFEAT ON disables certain syntax checking and error reporting
– Query command: The DEFEAT? query command returns the present DEFEAT
Example
OUTPUT 722;"DEFEAT ON" !DISABLES PROTECTION, SYNTAX, & ERROR ALGORITHMS
DEFKEY
Define key. Allows you to assign one or more commands to a particular
user-defined function key on the front panel (these keys are labeled f0 - f9). After
assigning one or more commands to a key, pressing that key displays the
command(s) on the multimeter's display. Pressing the Enter key will then execute
the command(s) in the order listed. The DEFKEY DEFAULT command erases the
strings assigned to all user-defined keys.
Syntax
DEFKEY number,string
or
DEFKEY DEFAULT
250
algorithms, it should be used only after all system programming is complete
and operational.
mode. Refer to Query commands
information.
near the front of this chapter for more
Keysight 3458A User's Guide