This is a chart helping any one interested for comparison data of GDS2000A Vertical system Noise floor.
Most A brand's they do present similar information so them to demonstrate their 12 Bit ADC advantage over competitors.
Vertical system Noise floor this has greater importance at power analysis, when we need to perform measurements between two waveform (voltage current).
For a reliable comparison, the scope setup should be at:
20MHz bandwidth limit on.
Time base 50ns (20MHz period).
Voltage measurement this must be RMS.
Scope channel impedance at 1G ohm.
Use statistics / Mean value calculation 10 samples.
1 mV/div......... 63 uV
2 mV/div......... 70 uV
5 mV/div ........ 80 uV
10 mV/div....... 150 uV
20 mV/div........ 760 uV
50 mV/div ....... 600 uV
100 mV/div ............ 2.5 mV
200 mV/div .............. 6.3 mV
500 mV/div ................. 3.0 mV
1 V/div ........................... 20 mV
2 V/div ............................. 10 mV
5 V/div ............................... 50 mV
10 V/div ................................ 230 mV