When the DPO3000 or DPO/MSO4000 is set to sweep speed of 50 ms/div or slower+ you can no longer use Hi Res mode. Is this normal?

When the DPO3000 or DPO/MSO4000 is set to sweep speed of 50 ms/div or slower+ you can no longer use Hi Res mode. Is this normal?

Yes. It is true that it goes out of high res mode at this setting, but only when set for Roll mode.

Go to the trigger menu, select normal mode, which takes it out of roll mode. Hi Res can then be used.