ONOSOKKI DS-2000 series Operation Manual page 15

3-10 Average Setup
To minimize a measurement error, data is averaged. In this case, summation averaging of
spectrum is used. (This setting is selected as initial setup. If changed, setup is required.)
The standard number of averaging is 4 or 8. Click the Input menu and then select Average.
Select Power Sum
(Spectrum Summation).
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Input 8 or around.