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SDS2000X HD Series Digital Oscilloscope User Manual
i n t . s i g l e n t . c o m 7 1
Acquisition Setup
13.2.1 Overview
Touch Acquire Menu on the quick menu of the timebase settings, or touch the menu bar
Acquire > Menu to recall the Acquire dialog box on the right side.
A. Select the interpolation mode
B. Select the Acq mode
C. Select the acquisition mode
(Normal/Peak/Average/ERES). See the section
"Acquisition" for details.
D. Select the Memory Management mode
(Auto, Fixed Sample Rate, and Fixed Memory).
See the section "Memory Management" for details.
E. Select the maximum memory depth
F. Enter the sequence menu. See the section
“Sequence” for details
G. XY mode on/off
Interpolation -- At small timebase settings, the number of original points on the screen may be less
than the number of display pixels in the grid area, so interpolation is necessary to display a continuous
waveform. For example, at 1 ns/div timebase and 2 GSa/s sample rate, the number of original points
is 20, but the grid area includes 1000 horizontal pixels. In this case, the oscilloscope needs to
interpolate the original points by 50.
X: Linear interpolation, the simplest way of interpolation, connects two original points with a
straight line.
Sinc: Sin(x)/x interpolation, the original point is interpolated according to the Nyquist
reconstruction formula, which has a good time-domain recovery effect for a sine wave. But for
step signals/fast rise times, it will introduce false overshoot due to the Gibbs phenomenon.
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