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Digital Oscilloscope Series
86
MATH
FFT_CENTER | FFTC
Command /Query
DESCRIPTION
The FFT_CENTER command sets the center
frequency when FFT (Fast Fourier Transform) is
selected.
The FFT_CENTER? query returns the current
center frequency of FFT waveform.
COMMAND SYNTAX
FFT_CENTER <center>
<center>:= frequency value with unit (MHz/
kHz/ Hz).
Note:
• If you set the center to a value outside of the
legal range, the center value is automatically set
to the nearest legal value. Legal values are
affected by the Hz/div setting.
• The range for center is related to the
horizontal scale of FFT and varied by models.
See the math menu of oscilloscope as shown
below for details.
QUERY SYNTAX
FFT_CENTER?
RESPONSE FORMAT
FFT_CENTER <center>
EXAMPLE
When the Math function is on, the operator is
FFT, and the horizontal scale is 100 MHz, the
following command sets the center frequency of
FFT to 58 MHz.
Command message:
FFTC 58MHz
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