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A sample rate that is too low might have the following effects on the waveform:
• Waveform Distortion: When the sample rate is too low, some waveform details
are lost, and the sample waveform displayed is rather different from the actual
waveform of the signal.
• Waveform Aliasing: Aliasing occurs when the sample rate is twice lower than
the actual signal frequency (Nyquist Frequency). The frequency of the waveform
reconstructed from the sample data is smaller than the actual signal frequency.
• Waveform Leakage: If the sample rate is too low, the waveform reconstructed
from the sample data does not represent the original signal correctly.
7.4 Memory Depth
Memory depth refers to the number of points that the oscilloscope can store in a
single trigger acquisition. It reflects the storage capability of the acquisition memory.
DHO1000 series oscilloscope provides up to 50 Mpts memory depth (100 Mpts
optional).
Acquisition System
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DHO1000 User Guide
59
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