Yea, that is a real difference. You get what you ask for. It's really odd setting a limit(and so few options too) for memory. May as well remove that entirely.
Yes, on the Siglent you literally change the memory depth on the menu and the memory depth shown in the bottom sample window doesn't change. It's insane.
Dave.. your latest video just made me realize something..
It CAN zoomout! It's just not how you would think to do it...
To set it up, first set a timebase that will let you use the full 200M
UNDER the horizontal key press Zoom
THEN Zoom in to the actual display/timebase you want, you can zoom in just as a normal timebase change AND keep 200 Megapoints
when the event triggers you are interested in, just be on the bottom area and do the normal horizontal adjustment out OR use the top portion to drag it to one side or the other to the area you are interested in
The bottom area is the entire normal page but has been scaled down... i think this is why they make the menu bars also cause scaling of the main screen pixels
Try it out... and post another video