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RIGOL Chapter 4 To Set the Sample System
4-10 MSO7000/DS7000 User's Guide
― 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
(optional), 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
(optional).
Note: In "Auto" mode, the oscilloscope selects the memory depth automatically
according to the current sample rate.
LA Memory Depth
Press Acquire More to view the memory depth of the current digital channel
under LA Mem Depth. The LA memory depth will change with the memory depth of
the analog channel, and cannot be set separately. The maximum LA memory depth is
62.5 Mpts.
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.
Press Acquire 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).
Horizontal Expansion
Horizontal expansion indicates the reference position that the screen waveform is
referenced to when it is horizontally expanded or compressed in adjusting the
Horizontal SCALE knob. In YT mode, press Acquire More Expand and
then rotate the multifunction knob to select the desired reference position. Press
down the knob to select it. You can also press Expand continuously to select it or
enable the touch screen to tap the desired reference. The horizontal expansion
reference supported by the oscilloscope includes Center, Left, Right, Trigger, and User.
The default is "Center".
Center: when the horizontal time base is modified, the waveform will be
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