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ADASH Ltd.
Adash 4400 – VA4Pro
Measurement
Press Start button. Two values are displayed. The Level of sound in dB and Shock Factor. The Shock factor is
defined as Peak value divide by RMS value. It means value 1.4 for pure sine. Higher values means that
transient shock events are in the sound signal.
The time waveform is displayed at the bottom of the screen. Use Auto Scale button to fit the scale of the graph.
Press Stop to stop the reading.
Listening
The ultrasound is demodulated to the frequencies around 1kHz and you can hear it in headphones. Use the
volume buttons to set the correct level.
Important note !
The signal in headphones is delayed 1 sec. It is because of digital processing, which takes this time.
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For further technical and contact information visit www.adash.eu, email: info@adash.cz
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