Keysight Technologies InfiniiVision 3000T X Series - Page 346

346 Keysight InfiniiVision 3000T X-Series Oscilloscopes Programmer's Guide
17 :FFT Commands
Introduction to
:FFT Commands
The FFT subsystem controls the FFT function in the oscilloscope.
Reporting the Setup
Use :FFT? to query setup information for the FFT subsystem.
Return Format
The following is a sample response from the :FFT? query. In this case, the query
was issued following a *RST command.
:FFT:DISP 0;SOUR1 CHAN1;RANG +160E+00;OFFS -60.0000E+00;SPAN
+100.0000E+03;CENT +50.000000E+03;WIND HANN;VTYP DEC;DMODE
NORM;AVER:COUN 8
:FFT:SOURce1 <source>
(see page 357)
:FFT:SOURce1? (see
page 357)
<source> ::= {CHANnel<n> |
FUNCtion<c> | MATH<c>}
<n> ::= 1 to (# analog channels)
in NR1 format.
<c> ::= {1 | 2}
:FFT:SPAN <span> (see
page 358)
:FFT:SPAN? (see
page 358)
<span> ::= the current frequency
span in NR3 format. Legal values
are 1 Hz to 100 GHz.
:FFT:STARt
<frequency> (see
page 359)
:FFT:STARt? (see
page 359)
<frequency> ::= the start
frequency in NR3 format.
:FFT:STOP <frequency>
(see page 360)
:FFT:STOP? (see
page 360)
<frequency> ::= the stop
frequency in NR3 format.
:FFT:VTYPe <units>
(see page 361)
:FFT:VTYPe? (see
page 361)
<units> ::= {DECibel | VRMS}
:FFT:WINDow <window>
(see page 362)
:FFT:WINDow? (see
page 362)
<window> ::= {RECTangular |
HANNing | FLATtop | BHARris}
Table 95 :FFT Commands Summary (continued)
Command Query Options and Query Returns