CONFIGURATION 
81 
Real time vs Equivalent time sampling mode 
 
The oscilloscope automatically switches between 
two sampling modes, Real-time and Equivalent-
time, according to the number of active channels 
and sampling rate. 
Once sampled data is used to reconstruct a single 
waveform. Short-time events might get lost if the 
sampling rate gets too high. This mode is used 
when the sampling rate is relatively low (1GSa/s 
or lower). 
Multiple numbers of sampled data are 
accumulated to reconstruct a single waveform. 
ETS restores more waveform detail but takes 
longer to update the waveform. This mode is used 
when the sampling rate becomes higher than 
1GSa/s. The maximum equivalent-time sampling 
rate is 25GSa/s.