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Common problem analysis
1.Why there is no waveform in the test and only one line does not
move on the screen?
Answer:Check whether the output signal source has no signal output, the probe
wire is short-circuited or open, and whether [stop] is displayed on the upper left
corner of the o scilloscope, if yes, press the [AUTO] key.
2. Why is t he charging indicator still lit red after unplugging the USB
cable after charging, and the temperature near the lamp is abnormal?
Answer: Just need to disassemble the shell,Re-plug the lithium battery once.
3. Why is t here no yellow ripple in the middle of the boot screen, and
it is not displayed even after pressing Auto (cannot measure
normally)?
Answer: Unplug the probe, open the Menu me nu, adjust to the automatic
calibration interface, press OK, and wait patiently for the end of the automatic
calibration (about 1 minute to 3 minutes), please return to the factory for repair
if it cannot b e repaired.
4.Why the measured voltage value data is 0 or incorrect?
Answer:The oscilloscope and probe wire gears must be consistent,If the
measured vo ltage is greater than 40V, please adjust to the 10x gear.Adjust
vertical sensitivity and time base (sampling rate),At least a clear and complete
periodic waveform is displayed on the screen,And the to p and bottom of the
waveform must be co mpletely displayed on the screen,Without clipping the top,
the voltage value data at this time is correct.
5.Why is the AC coupling and DC coupling waveform the same?
Answer:If the input signal is a symmetrical AC signal(The signal output by the
signal generator),Then the waveform is the same whether it is AC coupling or
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