La Memory Depth; Anti-Aliasing - Rigol MSO5000-E Series User Manual

RIGOL
——indicates the sample rate. The unit is Sa/s.
SRate
——indicates the horizontal timebase scale. The unit is s/div.
TScale
——indicates the number of grids in the horizontal direction. The unit is div.
HDivs
Therefore, under the same horizontal timebase scale, a higher memory depth can
ensure a higher sample rate.
Press Acquire → Mem Depth, then rotate the multifunction knob
the desired memory depth, and then press down the knob to select the option. You
can also press the Mem Depth key continuously or enable the touch screen to
select the memory depth. By default, the memory depth is Auto. The memory depth
of the analog channel is related to the current channel mode.
In single-channel mode, the memory depths available include Auto, 1 Kpts, 10
⚫
Kpts, 100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, and 100 Mpts.
In all-channel mode, the memory depths available include Auto, 1 Kpts, 10 Kpts,
⚫
100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts and 50 Mpts.
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
25 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 timebase has a large
deviation from the period of the signal under test (e.g. when the horizontal
timebase is greater than five-fold the period of the signal under test).
4-10
Chapter 4 To Set the Sample System
MSO5000-E User Guide
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