Keysight Technologies 3458A Guide D'utilisation page 251

number
The number parameter is an integer in the range 0 - 9 (or F0 - F9) that designates
the particular function key.
Power-on number = none.
Default number = 0.
string
The string parameter is the command or list of commands to be assigned to the
function key. (Link multiple commands with a semicolon.) The string parameter
must be enclosed in single or double quotes. The maximum string length is
40 characters (the quotes enclosing the string are not counted as characters).
Power-on string = none.
Default string = none (clears any previous string).
DEFAULT
Erases the strings assigned to all user-defined keys.
Remarks
– Key definitions stored from the front panel can be edited from the front panel.
– You cannot embed quotes in the DEFKEY string. This means you cannot use
– Query command: The DEFKEY? query command returns the string parameter
– Related commands: LOCK, MENU
Examples
DEFKEY
OUTPUT 722;"DEFKEY 1,'DCI 1;AZERO 0FF;NPLC 0'" !ASSIGNS COMMANDS TO F1
Keysight 3458A User's Guide
Definitions stored from remote cannot be edited.
the DISP command with a message in quotation marks as a string parameter.
You can, however, use the DISP command and an unquoted message (refer to
the DISP command for limitations on unquoted messages).
currently assigned to a particular function key (see example below). The string
returned by the DEFKEY? query command is enclosed by double quotation
marks, regardless of whether single or double marks where used when it was
specified.
Command Reference 6
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