5. Advanced User Guidebook
operation steps are as follows:
1. Press the Math button to bring up the Wfm Math menu.
2. Press the H1 button and call out the Dual Wfm Math menu. The menu will
display at the left of the screen.
3. Press the F1 menu selection button and choose CH1 for Factor1.
4. Press the F2 menu selection button and choose +.
5. Press the F3 menu selection button and choose CH2 for Factor2. The green
calculated waveform M is displayed in the screen.
Fig. 5-7 Waveform resulted from CH1 +CH2
Using FFT function
The FFT (fast Fourier transform) math function mathematically converts a time-domain
waveform into its frequency components. It is very useful for analyzing the input signal on
Oscilloscope. You can match these frequencies with known system frequencies, such as
system clocks, oscillators, or power supplies.
FFT function in this oscilloscope transforms 2048 data points of the time-domain signal
into its frequency components mathematically and the final frequency contains 1024
points ranging from 0Hz to Nyquist frequency.
Taking the FFT operation for example, the operation steps are as follows:
1. Press the Math button and call out the Math menu.
2. Press the H2 button and call out the FFT menu.
3. Press the F1 button to choose CH1 as the source.
4. Press F2 button, the windows item will display at the left of the screen, turn the G
knob to select Window, including Rectangle, Hamming, Hanning and Blackman.
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