User Manual

:FFT Commands 15
Keysight InfiniiVision 1000 X-Series Oscilloscopes Programmer's Guide 263
:FFT:REFerence
(see page 782)
Command Syntax
:FFT:REFerence <level>
<level> ::= the current reference level in NR3 format.
The :FFT:REFerence command specifies the FFT vertical value represented at
center screen.
If you set the reference level to a value outside of the legal range, the level is
automatically set to the nearest legal value.
Query Syntax
:FFT:REFerence?
The :FFT:REFerence? query returns the current reference level value for the FFT
function.
Return Format
<level><NL>
<level> ::= the current reference level in NR3 format.
See Also • ":FFT:CENTer" on page 259
• ":FFT:DISPlay" on page 260
• ":FFT:OFFSet" on page 261
• ":FFT:RANGe" on page 262
• ":FFT:SCALe" on page 264
• ":FFT:SOURce1" on page 265
• ":FFT:SPAN" on page 266
• ":FFT:VTYPe" on page 267
• ":FFT:WINDow" on page 268
NOTE
The :FFT:REFerence command is equivalent to the :FFT:OFFSet command.