User`s guide

Chapter 4 To Set the Sample System RIGOL
DS1000Z User’s Guide
4-3
(a) The Waveform before Average (b) The Waveform after 256 Averages
Figure 4-1 Average Acquisition Mode Example
Peak Detect
In this mode, the oscilloscope acquires the maximum and minimum values of the
signal within the sample interval to get the envelope of the signal 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 a kind of ultra-sample technique 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.
Note: “Average” and “High Res” modes use different averaging methods. The
former uses “multiple sample average” and the latter uses “signle sample average”.