Title: Hantek DSO2C15 about 37kHz impulse signal problem [Print this page] Author: figiel Time: 2024-1-17 07:08 Title: Hantek DSO2C15 about 37kHz impulse signal problem I have big problem with impulse switch signal, about 37kHz on every measurement which should be free from it.
Looking for the source of the interfering signal first I check it in my basement (place without any electric devices, separated via 25 cm of reinforced concrete), then I went to a professional laboratory.
Result: source of this switching about 37kHz signal is... your Hantek DSO2C15!!!
Signal disappears when I turned off your oscilloscope (controlled by other professional oscilloscope).
It seems that the converter in the oscilloscope power supply is the source of the problems.
Of course I tested original and several others oscilloscope probes.
Have you encountered this problem with this model?
Thank you - but I have difficulty reading russian.
Could you point specified page of this forum (over 200 pages)? Author: pu6k1n Time: 2024-1-21 15:40
The fact is that this frequency is generated by: 1. Switching power supply; 2. The converter powers the backlight of the LCD monitor. Author: pu6k1n Time: 2024-1-21 15:42
The first point can be eliminated by converting the switching power supply to a linear one; diagrams and photos are available on the specified forum. We cannot eliminate the second point. The root of your problem is probably a pulse source. Author: figiel Time: 2024-1-21 20:12
Thank you for your answer
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