I got curious about the analog gains in the front end. Using the SCPI interface, I was able to get the raw ADC counts. I then swept the channel 1 vertical offset to establish Vmin and Vmax for each of the vertical gains being tested.
500uV. ADC 0 = -7.3mV, ADC 255 = +7.65mV (Screen: -2mV to +2mV)
1mV. ADC 0 = -14.6mV, ADC 255 = +15mV (Screen: -4mV to +4mV)
2mV. ADC 0 = -14.6mV, ADC 255 = +15mV (Screen: -8mV to +8mV)
5mV. ADC 0 = -25.6mV, ADC 255 = +26.2mV (Screen: -20mV to +20mV)
10mV. ADC 0 = -51.2mV, ADC 255 = +52.8mV (Screen: -40mV to +40mV)
20mV. ADC 0 = -101mV, ADC 255 = +104mV (Screen: -80mV to +80mV)
50mV. ADC 0 = -254mV, ADC 255 = +258mV (Screen: -200mV to +200mV)
100mV. ADC 0 = -500mV, ADC 255 = +512mV (Screen: -400mV to +400mV)
200mV. ADC 0 = -1.01V, ADC 255 = +1.03V (Screen: -0.8V to +0.8V)
500mV. ADC 0 = -2.56V, ADC 255 = +2.64V (Screen: -2V to +2V)
It seems the 500uV isn't a 'lie' as it is the final analog gain step (but 1mV is a lie). Probably should have been: 5mV, 2.5mV, 1mV (with no 500uV range).
Might also make more sense if the top and bottom UI moved to the left/right, and we got 4.5 divisions up and 4.5 divisions down.
Edit: What's not so good; SCPI interface slows the UI down, and it's just crashed the UI.