Description Of The Instrument - Chauvin Arnoux CA834 Notice D'utilisation

2. Keep the microphone well away from any sound-reflecting surface like walls or floors, to
minimise any errors due to possible spurious reflexions.
When measuring, hold the sonometer at arm's length to avoid reflexion off your own body
and to allow the sound to propagate freely in every direction.
3. Take all necessary steps so that there are no obstacles between the point of measurement
and the source of the noise.
4. Do not take into consideration excessively low measurement levels (insignificant sound)
or, to the contrary, excessively high measurement levels (overload).

3. DESCRIPTION OF THE INSTRUMENT

1. Wind-guard. Use this accessory when you need to make measurements at wind speeds
in excess of 10m/s.
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