Delta OHM HD2024, Руководство по эксплуатации

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HD2024
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V1.0
1 INTRODUCTION
The HD2024 sound level calibrator is a portable, battery operated sound source,
suitable for sound level meters (portable and laboratory) and acoustic stations.
It allows calibrating 1/2” (1/4” with
HD2020MA adapter) microphones with mechanical
dimensions compliant with IEC 61094-1 (“Measurement microphones. Part 1:
Specifications for laboratory standard microphones”) and IEC 61094-4 (“Measurement
microphones. Part 4: Specifications for working standard microphones”).
The generated sound pressure level is equal to 94 dB at 1000 Hz frequency.
A LED signals the low battery condition.
Advantages of the HD2024 calibrator:
• The 1000 Hz frequency allows calibrating sound level meters with any frequency
weighting (LIN, A, B, ...), without applying any correction factor.
• The generated sound pressure level is indipendent of atmospheric pressure: you
don’t need to adjust the value according to static pressure over a wide range of
values.
• Its simplicity of use allows even unskilled staff to use it.