I've made some tests regarding High Resolution 14bit/16bit vs normal.
Signal source SDG2042X
- ch1 : ramp, 1kHz, 10mVpp, symm 50%
- ch2 : pulse, 4kHz, 3mVpp, pulse width 1us, rise edge 8.4ns
- wave combine output
HDO1074 with 50Ohm terminator, aquisition 50mV, 5ms.
Trigger single, stop, then zoom in from 50mV/5ms up to 1mV/1us
The 3mVpp/1us pulse it's very clear even in normal mode.
pictures for normal mode: