Loading ...
Loading ...
Loading ...
Basic Operation
DSO5000 Series Digital Storage Oscilloscope User Manual 21
Control the oscilloscope to magnify or attenuate the source signal of the channel waveform. The
vertical size of the display on the screen will change (increase or decrease) to the ground level.
Also you may use this knob to switch between coarse and fine.
4. MATH MENU: Display the waveform math operations. See the table below for details.
The MATH menu contains source options for all math operations.
Operations Source Options Comments
＋ CH1+CH2 Add Channel 1 to Channel 2.
CH1-CH2
Subtract the Channel 2 waveform from the
Channel 1 waveform.
－
CH2-CH1
Subtract the Channel 1 waveform from the
Channel 2 waveform.
Three types of window available for selection:
Hanning, Flattop, Rectangular.
FFT CH1 or CH2
Zoom: Use the FFT Zoom button to adjust the
window size.
Scale: x1, x2, x5, x10.
Note: All selected menus are highlighted in orange.
5.3.1 Math FFT
This chapter elaborates how to use the Math FFT (Fast Fourier Transform). You can use the Math
FFT mode to convert a time-domain (YT) signal into its frequency components (spectrum), and to
observe the following types of signals:
Analyze harmonics in power cords;
Measure harmonic content and distortion in systems;
Characterize noise in DC power supplies;
Test impulse response of filters and systems;
Analyze vibration.
To use the Math FFT mode, perform the following tasks:
Set the source (time-domain) waveform;
Display the FFT spectrum;
Choose a type of FFT window;
Adjust the sample rate to display the fundamental frequency and harmonics without aliasing;
Use zoom controls to magnify the spectrum;
Use cursors to measure the spectrum.
5.3.1.1 Setting Time-domain Waveform
It is necessary to set the time-domain (YT) waveform before using the FFT mode. Follow the steps
below.
1. Push the AUTOSET button to display a YT waveform.
Loading ...
Loading ...
Loading ...