Peak Detect; High Resolution - Rigol MSO4000 User Manual

RIGOL
4 To Set the Sample System

Peak Detect

In this mode, the oscilloscope acquires the maximum and minimum values of the
signal within the sample interval to get the envelope or the narrow pulse of the signal
that might be lost. In this mode, signal confusion can be prevented but the noise
displayed would be larger.
In this mode, the oscilloscope can display all the pulses with pulse widths at least as
wide as the sample period.

High Resolution

This mode uses an over-sample technique to average the neighboring points of the
sample waveform. This reduces the random noise on the input signal and generates
a much smoother waveform 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.
Note: "Average" and "High Res" modes use different averaging methods. The former
uses "Waveform Average" and the latter uses "Single-sample Average".
MSO4000/DS4000 User's Guide
4-4