DPO6000, MPO6000 Series Digital Fluorescent Oscilloscope Product Manual V1.3
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Sampling rate and memory depth
Sampling rate
The highest sampling rate of DPO6000 / MPO6000 is 1GSa/s. In the actual use of the
oscilloscope, the sampling rate is determined by the current horizontal time base scale
and storage depth. The sampling rate can be changed by adjusting the horizontal time
base through the horizontal gear knob, or by switching the memory depth, the sampling
rate value changes in real time and is displayed in the status bar at the top left of the
screen.
Memory depth
Storage depth refers to the number of waveform points that the oscilloscope can store
in one triggered acquisition, and it reflects the storage capacity of the acquisition
memory. DPO6000 / MPO6000 series oscilloscopes have a maximum storage depth of
128Mpts.
The relationship between the oscilloscope's storage depth, sampling rate, and sampling
time is as follows:
Sampling time = memory depth / (sampling rate (Sa/s))
For example: if the sampling rate is 1GSa/s and the storage depth is 32K, the actual
sampling time is:
Sampling time = 3,2000 / 1,000,0000,000 s = 32
×
10
-
6
s = 32us
Waveform interpolation
Under real-time sampling, the oscilloscope acquires discrete samples of the displayed
waveform. In general, waveforms displayed by dots are difficult to observe. In order to
increase the signal visibility, digital oscilloscopes generally use the interpolation display
mode. The interpolation method is a processing method of "connecting various acquisi-
tion points" and using some points to estimate the entire shape of the waveform. For
real-time sampling using interpolation, even if the oscilloscope only collects fewer sam-
pling points in a single pass, interpolation can be used to fill in the gaps between points