SDS1000X-E User Manual
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oscilloscope provides up to 14 Mpts memory depth.
Press the Acquire button on the front panel; press the Mem Depth softkey and then turn
the Universal Knob to select the desired value and push down the knob to confirm. Press
the Mem Depth softkey continually can also select the desired value.
The actual memory depth is displayed in the information area at the upper- right corner of
the screen. Memory depth that available: 14K, 140K, 1.4M, 14M.
Since the oscilloscope has two acquisition memories, when only one channel is on, the
maximal memory depth is up to 14 Mpts.
The relation of memory depth, sample rate and waveform length fulfills the equation
below:
Memory depth = sample rate (Sa/s) × waveform length (s/div × div)
Sampling Mode
The oscilloscope only supports real-time sample. In this mode, the oscilloscope samples
and displays waveform within a trigger event. The maximum real-time sample rate is
1GSa/s.
Press the RUN/STOP button to stop the sample, the oscilloscope will hold the last display.
At this point, you can still use the vertical control and horizontal control to pan and zoom
the waveform.
Interpolation Method
Under real-time sampling, the oscilloscope acquires the discrete sample values of the
waveform being displayed. In general, a waveform of dots display type is very difficult to
observe. In order to increase the visibility of the signal, the digital oscilloscope usually
uses the interpolation method to display a waveform.
Interpolation method is a processing method to “connect all the sampling points”, and
using some points to calculate the whole appearance of the waveform. For real-time
sampling interpolation method is used, even if the oscilloscope in a single captures only a
small number of sampling points. The oscilloscope can use interpolation method for filling
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