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Figure 19 With Random Noise, Average Mode
Eres
This mode uses oversampling to average the neighboring points of the sample
waveform to reduce the random noise on the input signal and generate much
smoother waveforms on the screen. This is generally used when the sample rate of
the digital converter is higher than the storage rate of the acquisition memory.
Eres mode can be used on both single-shot and repetitive signals and it does not
slow waveform update. This mode limits the oscilloscope's real-time bandwidth
because it effectively acts like a low-pass filter.
Note: “Average” and “Eres” modes use different averaging methods. The
former uses “Waveform Average” and the latter uses “Dot Average”.
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