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1 Safety Precautions
High voltage. The x10 range of the probe measures up to 220V. An x100
probe is required for overreach.
Probe attenuation. Before measuring voltages greater than 40V, switch the
probe to the X10 position.
Charge. The charging voltage is 5V, use a computer or mobile phone
charger.
When measuring high-voltage or non-isolated circuits, it cannot be used
while charging (powered by a built-in battery).
2 Quick start instructions
2.1 Power
Press and hold the power button on/off.
When the battery is dead, use the USB cable to connect to the 5V adapter for
charging, and the max charging current is about 1.2A. It is best to use a computer or
mobile phone for charging. The LED lights up red when charging, and turns green
when fully charged.
2.2 Auto
After the probe is connected to the signal, press the [Auto] button, and the
oscilloscope will automatically detect the signal and adjust the range. If there is no
waveform, the probe may not be connected correctly, or there may be no signal at the
connection (you can use a multimeter to determine if there is a voltage).
2.3 Sensitivity and time base
Manual adjustment: “mV”/ “V” buttons scale the waveform vertically. The “s”/
“ns” button scales the waveform horizontally.
The vertical sensitivity indicates the voltage of a grid in the vertical direction,
and it is adjusted by the mV and V buttons to adapt to different voltages.
The time base represents the time of a grid horizontally. It is adjusted by the s
and ns buttons to accommodate different frequencies.
2.4 Test built-in signal generator
1. Connect the probe to the generator output pin. 2. Press the [Menu] key and
then press [mV] to open the generator interface, press the [Stop] key to change the
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