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The sound level generated from rotationg
machine is changed with respect to the number of
rotations.
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In this example, AC output from LA-7500
precision sound level meter, which can measure the sound
level in wide range of frequency maximum at 25 kHz, is
used instead of microphone. Input the AC output into the
DS-3000 series in order to display the changing of sound
level due to the rotational change. It displays the
number of rotations on the X axis and the sound level
component according to the number of rotations on the Y
axis (tracking analysis).
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It requires consideration that the
measurement result may not be affected by the reflected
sound from floor surface.
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