Keysight Technologies 34450A Programmer's Reference Manual page 208

2 SCPI Programming
Return Format
The query command returns an
name is always returned (e.g., "CURR:AC", "FREQ", "TEMP").
Examples
The following commands select the AC voltage function (double or single quotes are allowed).
FUNC "VOLT:AC"
The following query returns the function selected (the quotes are also returned).
FUNC?
Typical Response: "VOLT:AC"
See Also
CONFigure[:PRIMary]?
208
ASCII string enclosed in double quotes. The short form of the function
or FUNC 'VOLT:AC'
Keysight 34450A Programmer's Reference