Dear madam, sir, Recently I purchased a 6254BD 250MHz USB oscilloscope, I must say I’m impressed with the build quality of the unit, but there are a few problems however. Most important, the supplied PP-250 probes are not capable of reaching the 250MHz bandwidth, after some testing they appear to be about 120MHz capable ( I will include some screenshots in which I compare a 150MHz probe to the PP-250 probe at 20MHz and 125MHz sinewave. The yellow trace is the PP-250 and the blue trace is the Rigol probe). The probes were compensated on the 1KHz square wave and set to 10x. I also contacted the seller about this, because without proper probes the oscilloscope cannot be used to its full potential.
Other, less important, things are: - There seems to be a significant amount of jitter on the trigger, especially visible on low time basis.
- When I try to store a screenshot with the Hantek software it doesn’t show the full screen (I use a 4K display)
There some other things that don’t seem to work well but I leave it at these, because I think they are the most important. If you are interested, I have also some feature requests which would make the software more useful (in my opinion). I hope you can help me. Best regards, Jeroen
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