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actual signal.
10.2 Acquisition Mode
To obtain a waveform from sampling points, press the ACQUIREsampling mode to select acquisition
mode.
(1) Normal Sampling
The signal is sampled and reconstructed with equal time intervals. For most waveforms, this mode
can perform the best display.
(2) Peak Sampling
The maximum and minimum values of the input signal are found at each sampling interval, and the
waveform is displayed these values. The oscilloscope can acquire and display a narrow pulse,
otherwise the narrow pulse might be missed in the normal mode. Noise might be enlarged in this
mode.
(3) High Resolution
The oscilloscope will averages the adjacent points of the sampled waveform and reduce random
noise from the input signal and generate smoother waveforms.
(4) Average
The oscilloscope obtains several waveforms to take the average, and display the final waveform.
This method can reduce random noise.
By changing the acquisition mode setting to observe the waveform changes. If the signal contains
large noise, when the average mode is not adopted and when the 32 times average mode is adopted,
the sampled waveform is shown in the following figure.
Waveform when the average mode is not adopted waveform when the 32 times average mode
Note: Average and high resolution uses different average methods. The former is multiple sampling
average, the latter is single sampling.
Pulse disappear
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