Rigol DHO4804 oscilloscope

DHO4000 series user manual - Page 80

For DHO4804.

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Pre-Sample Delayed Sample
Memory Depth
Trigger Point
T
Figure 7.3 Memory Depth
The following formula shows the relations among memory depth, sample rate, and
horizontal time base:
MDepth ≥ SRate * TSCale * HDivs
•
MDepth
indicates the memory depth. The unit is pts.
•
SRate
indicates the sample rate. The unit is Sa/s.
•
TSCale
indicates the horizontal time base scale. The unit is s/div.
•
HDivs
indicates the number of grids in the horizontal direction. The unit is div.
Therefore, with the same horizontal time base, a higher memory depth can ensure a
higher sample rate.
In Horizontal menu, click or tap the Mem Depth drop-down button to select the
memory depth. The default setting is "10k". The selected memory depth value is
displayed in the acquisition label ("A" icon) at the top of the screen.
• When only one of the four channels (CH1-CH4) is enabled, the memory depths
available include Auto, 1 kpts, 10 kpts, 100 kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50
Mpts, 100 Mpts, 125 Mpts, 200 Mpts, 250 Mpts, and 500 Mpts (optional).
• When two of the four channels (CH1-CH4) are enabled, 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 (optional).
Acquisition System
DHO4000 User Guide
64
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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