MDO 4000 Series

I know that i can change the number of samples in Time X axis (1k or 10k samples for example).
My Question: can i change the resolution scale for Voltage Y axis ? when i set the volt/dev to 5 (to measure 28V signal) the resolution is not good enough....
I read the voltage samples to csv file and i see that the resolution is 0.2V
It seems to be that the vertical points are only 200 points: 40V on the screen, 0.2V resolution so 40/0.2=200 points only 

Hi David

The MDO4000 has an 8 bit ADC, so you have 256 quantization levels (actually a little less as a few levels are used for clipping detection).

If you need higher resolution then I would suggest enabling Hi Res to improve resolution as explained here.