RIGOL Chapter 4 To Set the Sample System
4-10 DS8000-R User Guide
― In single-channel mode, the memory depths available include Auto, 1 Kpts, 10
Kpts, 100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, 125 Mpts, 250
Mpts, and 500 Mpts.
― In dual-channel mode, the memory depths available include Auto, 1 Kpts, 10
Kpts, 100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, 125 Mpts, and 250
Mpts.
― In 4-channel mode, the memory depths available include Auto, 1 Kpts, 10 Kpts,
100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, and 125 Mpts.
Note: In "Auto" mode, the oscilloscope selects the memory depth automatically
according to the current sample rate.
Anti-Aliasing
At a slower sweep speed, the sample rate is reduced, and a dedicated display
algorithm can be used to minimize the possibility of aliasing.
In the Acquisition menu, click Anti-aliasing to enable or disable the anti-aliasing
function. By default, anti-aliasing is disabled. In this case, it is more likely to generate
waveform aliasing.
Note: This function should be enabled when the horizontal time base has a large
deviation from the period of the signal under test (e.g. when the horizontal
time base is greater than five-fold the period of the signal under test). It is
available when the timebase mode is "YT".
Horizontal Expansion
Horizontal expansion indicates the reference position that the screen waveform is
referenced to when it is horizontally expanded or compressed. In YT mode, in the
Acquisition menu, click More → Expand and then select the desired reference
position. The horizontal expansion reference supported by the oscilloscope includes
Center, Left, Right, Trigger, and User. The default is "Center".
âš« Center: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the screen center.
âš« Left: when the horizontal time base is modified, the waveform will be expanded
or compressed horizontally relative to the leftmost position of the screen.
âš« Right: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the rightmost position of the
screen.
âš« Trigger: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the trigger point.
âš« User: when the horizontal time base is modified, the waveform displayed will be
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