Basic Operation
QC1936 Digital Storage Oscilloscope 16
Selects a value according to the probe attenuation factor so
as to ensure correct vertical readouts. Reduce bandwidth to
6MHz when using a 1X probe.
Inverts the waveform relative to the reference level.
Coupling
If the channel adopts a DC coupling mode, you can quickly measure the DC component of the
signal by observing the difference between the waveform and the signal ground.
If the channel adopts an AC coupling mode, the DC component in the signal is filtered. By this
mode, the AC component of the signal is displayed at a higher sensitivity.
If the channel adopts a GND coupling mode, cut off the input signal. Inside the channel, the
channel input is connected with a zero volt reference electric level.
Fine Resolution
In the fine resolution setting, the vertical scale readout displays the actual VOLTS/DIV setting. The
vertical scale changes only after you adjust the VOLTS/DIV control and set to coarse.
Remove Waveform Display
To remove a waveform from the screen, first push the menu button to display the vertical menu,
then push again to remove the waveform. A channel waveform which is unnecessary to be
displayed can be used as a trigger source or for math operations.
4. MATH MENU: Display the waveform math operations. See the table below for details.
The MATH menu contains source options for all math operations.
Add Channel 1 to Channel 2.
Subtract the Channel 2 waveform from the Channel 1
waveform.
Subtract the Channel 1 waveform from the Channel 2
waveform.
Channel 1 multiply channel 2
Channel 1 divide channel 2
Channel 2 divide channel 1
Three types of window available for selection: Hanning,
Flattop, Rectangular.
Zoom: Use the FFT Zoom button to adjust the window size.
Scale: x1, x2, x5, x10.
Note: All selected menus are highlighted in orange.
2.7.2 Math FFT
This chapter elaborates how to use the Math FFT (Fast Fourier Transform). You can use the Math
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