I have a question about the 10-bit acquisition mode: is it simply a hardware-accelerated digital interpolation filter?
If so, it seems like it wouldn't affect measurements at the max and min. Do I have that right?
For example, I've configured C1 as 100X, 50V/div (400V overall range from -200 to +200). If I vary the max input voltage continuously (via variable voltage divider), the peak voltages only vary by increments of ~1.67V whether I'm in 8-bit acquisition or 10-bit. The number of significant digits increases with 10-bit, but the min and max voltage increments don't change.
(Also, 1.67 would correspond to 240 increments over 400V rather than 256...are they dropping the high and low 8 intervals due to lack of linearity or something?)