1 Introduction
The DB200 sound level meter is an acoustic measurement instrument with main features of a conventional and integrating-averaging
sound level meter.
With its memory, DB200 sound level meter stores measurement datasets. Then they are transferred to a computer and processed
through LDB200 software.
According to international standards, sound level meter calculates and displays on its graphical backlight LCD-screen values used for a
fast and complete study of the noise environment.
To simplify and make nice its use, 5 measurement modes have been preselected :
• Mode 1 : Conventional sound level meter (See p.10)
• Mode 2 : Conventional sound level meter with storage (See p. 11)
• Mode 3 : Conventional and integrating-averaging sound level meter (See p. 13)
• Mode 4 : Integrating-averaging sound level meter with storage (See p. 15)
• Mode 5 : Sound level meter « calculator » of two sound sources (See p 17)
In the different modes, in addition to measured values, the sound level meter can display :
• results for a better definition of the acoustic environment :
Maximum and minimum values, peak values, statistics distribution of measured levels
• Indications required for the proper validation of the measurement :
Presence and percentage of overload input stages, duration of the measurement
• other information :
Battery autonomy, remaining measuring capacity
The sound level meter also communicates with an automaton through I / O plugs :
• 0-10 V DC analog output
• Control bit activated as per pre-programmed threshold
• Launching and stop of measurement by the automaton
Introduction 4
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