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Chapter 4 To Set the Sample System RIGOL
DS8000-R User Guide 4-5
Acquisition Mode
The acquisition mode is used to control how to generate waveform points from the
sample points.
DS8000-R supports the following four acquisition modes: Normal, Average, Peak,
and High Resolution. By default, the acquisition mode is Normal.
Click on the function navigation icon to open the navigation function. Then, click
Acquisition → Acquisition to select the desired acquisition mode.
Normal
In this mode, the oscilloscope samples the signal at a specified fixed time interval to
rebuild the waveform. For most of the waveforms, using this mode can produce the
optimal display effects.
Average
In this mode, the oscilloscope averages the waveforms from multiple samples to
reduce the random noise of the input signal and improve the vertical resolution.
Greater number of averages can lower the noise and increase the vertical resolution;
while at the same time, it will slow the response of the displayed waveform to the
waveform changes.
When you select "Average" mode, click Averages and use the numeric keypad or
scroll with the mouse to set the desired number of averages. When the average
count value is not in Nth power-of-2, a prompt message "Truncation average error" is
displayed. At this time, a value that is smaller than the one you input and the closest
to the Nth power-of-2 will be input automatically. For example, if you input 9 with the
numeric keypad, the average count will be input 8 automatically.
The number of averages can be set to 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048,
4096, 8192, 16384, 32768, or 65536. By default, it is 2.
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