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Grid

For setting methods, refer to the descriptions in

To Set the Screen Grid

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

Figure 9.7

Math Operation

DHO900 User Guide

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Rigol DHO914 User Manual

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