One interesting thing I've learned while programming RUU is that the Rigol only displays 200 of the 256 possible ADC levels at any given time (mapped to the 8 vertical grid divisions) - even though the entire range is available via SCPI. My newest version of RUU (hopefully will post it tomorrow) has a 'Full ADC' switch - to allow seeing the full range.
Yes Marmad , I noticed that when fudging the Waveform data, Just thought that data was rescaled on the the display , and not limited to the top and bottom,
That wastes 25 % of the display resolution!!!
Yes, nice if RUU displays the full resolution with 10 vertical divisions then there will not be a need to adjusted and the v/div.
By the way the waveform data file also has data before and after the data that is display. I put a dot at middle screen Voltage but off to the right of the display and in the Pic below the sin(x) starts at the end of the trace before the sample occurs off the display