I have DSOS054A oscilloscope. In the datasheet, the dynamic range (SnR) is give 108 dB. But as I know, the dynamic range formula is
where N is ADC bit number. DSOS054 has 10 bit ADC. As I understand from "Keysight Technologies Evaluating Oscilloscope Signal Integrity" application note, it increases to 12 bit with using the oversampling method. In that case, the dynamic range is 74.0102. I could not understand how they calculated in the datasheet.
If some explain to me the calculation of dynamic range, I will appreciate for the help!