Fft Operation - Rigol DHO900 User Manual

Grid
For setting methods, refer to the descriptions in
Parameter Setting
• When the operator is "Intg", click or tap the Offset input field and use the pop-
up numeric keypad to set the DC offset calibration factor of the input signal. You
can also use the corresponding multipurpose knob to set the value.
• When the operator is "Diff", click or tap Smooth input field and use the pop-up
numeric keypad to set the number of smooth times for the differential
operation. You can also use the corresponding multipurpose knob to set the
value.
• When the operator is "AX+B", click or tap A/B input field and use the pop-up
numeric keypad to set the A/B value. You can also use the corresponding
multipurpose knob to set the value.
9.3

FFT Operation

FFT (Fast Fourier Transform) is used to transform time-domain signals to frequency-
domain components (frequency spectrum). This oscilloscope provides FFT operation
function which enables you to observe the time-domain waveform and spectrum of
the signal at the same time. FFT operation can facilitate the following works:
• Measure harmonic components and distortion in the system;
• Display the characteristics of the noise in DC power;
• Analyze vibration.
In the Math menu, click or tap the Operator drop-down button to select FFT to
access the menu as shown in
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To Set the Screen Grid
Figure 9.7
.
Math Operation
.
DHO800 User Guide
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