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Answer: First, set the coupling to "DC", and adjust the probe to the 10X position
(the oscilloscope menu should also be set to the same 10X as the probe). Connect the
probe to the power output terminal, and then click the [Auto] key. Pay attention to the
"Mean" value.
4.How to measure 220V mains?
Answer: First remove the USB cable (isolation), then adjust the probe to the 10X
position, adjust the vertical sensitivity to 100V, and adjust the time base to 10ms, and
then connect the probe to the neutral wire and the live wire (be careful!).
5.How to measure audio signal?
Answer: The coupling mode is set to "AC". The probe is set to the 10X position.
The probe is connected to the audio output. The time base is adjusted to about 1-10ms,
and the voltage sensitivity is adjusted to about 500mV (decided according to the
volume).
6.How to measure main board communication signal or bus signal?
Answer: The probe is connected to the signal first. The coupling mode is set to DC,
the probe is set to the X10 position (the menu should also be set to 10X), and then
click the [Auto] button. If the correct waveform cannot be obtained, please manually
click the [s]/[ns] button to adjust the time base.
7.How to measure power supply ripple?
Answer: Set the coupling mode to "AC" in the menu, and set the probe to the 1X
position (the menu is also set to 1X). Adjust the time base to about 200us. First adjust
the vertical sensitivity to 10mV. If the waveform exceeds the screen, click the [V] key
to reduce it until all the ripples appear on the screen.
