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Use the multimeter pen to carry the positive and negative ends of the power cord.
If the power supply meets the current responsible demand, the buzzer will beep for a long time
and the green text will be displayed at the same time.
If the power supply cannot meet the current demand, the buzzer will alarm and flash red letters.
Oscilloscope:
After selecting the oscilloscope in the main menu, you will enter the custom oscilloscope
interface.
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