UPO2000CS series User Manual
58
(2) Low Sampling Rate Effect
• Waveform Distortion: Due to low sampling rate, the details of the waveform might be missing, the sampling
waveform might be different than the actual signal.
• Wave Mixing: When the sampling rate is 2 times lower than the actual signal frequency (Nyquist frequency),
the frequency of the reconstructed signal will be less than the actual signal frequency.
• Waveform Leakage: Due to low sampling rate, the reconstructed waveform might not reflect the actual
signal.
6.2 Acquisition Mode
To obtain a waveform from sampling points, press the ACQUIRE key, then press F1 key to switch between
acquisition methods.
(1) Normal Sampling
In this acquisition mode, the signal is sampled and reconstructed with equal time intervals. For most waveforms, the
use of this mode can produce the best effect.
(2) Peak Sampling
In this acquisition mode, the maximum and minimum values of the input signal are found at each sampling interval,
and the waveform is displayed using these values. This way, 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
In this acquisition mode, the oscilloscope can reduce random noise from the input signal and generate smoother
waveforms.
High Resolution mode to minimize noise from small signal
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