Rigol DS1000E Series User Manual page 139

(1) If there is noise within the signal and the waveform looks too wide, in this case,
choose average acquisition. In this mode the waveform will be thin and easy to
observe and measure.
To use average follow these steps.
Press soft button as Acquire→Acquisition→Average

Toggle the Averages soft button to select the number of averages that best

eliminates the noise from the displayed waveform. It can be adjusted from 2-
256. (See Figure 3-3)
(2) To reduce the noise it can also be achieved by reducing the intensity of the
display.
NOTE: It is normal that the refresh rate will slow down when the average
acquisition mode is ON.
© 2008 RIGOL Technologies, Inc.
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Figure 3- 3
Signal without noises
User's Guide for DS1000E, DS1000D Series
RIGOL
3-5