RIGOL Chapter 2 Command System
2-98 MSO1000Z/DS1000Z Programming Guide
:MATH:FFT:HCENter
:MATH:FFT:HCENter <cent>
:MATH:FFT:HCENter?
Set or query the center frequency of the FFT operation result, namely the frequency
relative to the horizontal center of the screen. The default unit is Hz.
When the FFT mode is set to TRACe, the range of <cent> is from 0 to (0.4 x FFT
sample rate). Wherein, FFT sample rate equals to screen sample rate, that is,
100/horizontal timebase.
When the FFT mode is set to MEMory, the range of <cent> is from 0 to (0.5 x FFT
sample rate). Wherein, FFT sample rate equals to memory sample rate
(:ACQuire:SRATe?).
Step = Horizontal Scale of the FFT operation result/50.
The query returns the current center frequency in scientific notation.
:MATH:FFT:HCENter 10000000 /*Set the center frequency of the FFT operation result
to 10MHz*/
:MATH:FFT:HCENter? /*The query returns 1.000000e+07*/
:MATH:OPERator
:MATH:FFT:MODE
:TIMebase[:MAIN]:SCALe
:MATH:FFT:HSCale
:MATH:FFT:MODE
:MATH:FFT:MODE <mode>
:MATH:FFT:MODE?
Set or query the FFT mode.
TRACe: denotes that the data source of the FFT operation is the data of the
waveform displayed on the screen.
MEMory: denotes that the data source of the FFT operation is the data of the
waveform in the memory.
The query returns TRAC or MEM.
:MATH:FFT:MODE TRACe /*Set the FFT mode to TRACe*/
:MATH:FFT:MODE? /* The query returns TRAC*/
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