1) A small netbook (Win7) with Atom processor is already slightly overwhelmed: The signal display (image update) rather jerky, the auto-triggering is rarely updated. If you click without giving advance, then the software will depend on and can only be stopped via Task Manager.
2.) The balance of the zero line (trimmer DC offset 2) I had to repeatedly re-perform. The deviation was up to 1/2 Div.
3.) It would the application possibilities of the unit significantly increase if you could store on the computer not only with the oscilloscope screen, but the whole waveform itself (with inserted time markers) in a file (Data Logger).