Hantek oscilloscopes has absolutely nothing to do with Keysight, maybe the choice of black color for the new instruments, and that's all.
Thanks for the information.
Anyway, i have to return the oscilloscope citing warranty claims.
The oscilloscope occasionally freezes during measurements and can only be used again after a restart. This often happens when changing the timebase to zoom in on a signal, but also when using the math function (FFT for example).
A few days ago the scope was then completely frozen and could not be used again even after restarting it several times.
The Hantek support was very quick despite the time difference of 8 hours and always replied within 24 hours.
I received a zip file with the operating system and instructions on how to put the oscilloscope into maintenance mode and install a new system.
After reinstalling the system, the scope was usable again. Unfortunately, the new software did not fix the occasional crash of the Scope and it still freezes occasionally, so that only a restart helps, which is quite annoying.
Therefore I will send the scope back and claim a refund.
I think i will buy a Rigol DS1102Z-E, 2-channel, 100MHz,1 GSa/s, 24 Mpts when i got the refund.