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4.Advanced User Guidebook
30
Channel
Confirm
Clear
Operators
Integral Differential Square root
Expression
3. Create an expression. When done, choose
in the keyboard to confirm
. The
division of Math waveform is displayed at the left bottom of screen.
Digital Filter
Digital filter provides 4 types of filters (low pass, high pass, band pass and band
reject). The specified frequencies can be filtered by setting the cut-off frequency.
Digital filter can only apply to CH1 or CH2.
1. Press the Math button to display the math menu in the bottom.
2. Select DIR in the bottom menu.
3. In the right menu, select channel as CH1 or CH2.
4. In the right menu, select type, select the desired filter type.
5. In the right menu, select window, select the desired window.
6. When low-pass or high-pass type is selected, select cut-off fre in the right
menu.
When band-pass or band-reject type is selected, select upper or down in the
right menu. Turn M knob to adjust the frequency.
7. In the right menu, select Vertical (div), turn M knob to adjust the vertical
position of Math waveform. The voltage division of Math waveform is the same
as the selected channel.
Note: On the Scan format, digital filter is disabled.
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 8192 data points of the time-domain
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