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SDS5000X Series Digital Oscilloscope User Manual
166 / 236 W W W. S I G L E N T. C O M
scaling is the reference level.
Horizontal Control
Touch Center Freq to set the center frequency of FFT waveform by the
universal knob or the virtual keypad.
Touch Hz/div to set the horizontal scale of FFT waveform by the universal knob
or the virtual keypad. The reference point for horizontal scale scaling is the
center frequency.
Measure the FFT waveform
Press the Cursors button on the front panel to turn on the cursor function, and
then specifying the source as "Math". X1 and X2 cursor are used to measure
frequency position.
Only the maximum parameter of the FFT is supported in automatic
measurement.
Note: DC component in the signal may show a large amplitude near 0 Hz. If
your application does not require measurement of the DC component, it is
recommended to set coupling mode of the source channel to "AC".
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