Cirrus Optimus+, Руководство по эксплуатации инструмента

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Page 10
Sound Level Meters – User Manual
The instrument will measure the sound level from the acoustic calibrator to determine if it is
within the required tolerance and levels. The calibration level must be stable to within ±0.075
dB for 5 consecutive seconds, for calibration to be successful.
When calibration is complete, your instrument will display the level along with the correction or
adjustment made.
Your sound level meter is pre-set with the correction values needed for Cirrus Research
microphone capsules, so no manual adjustment is required. The calibration level you should
expect is 93.7 dB.
Refer to page 44 for detailed operating information for the CR:514 and CR:515 acoustic
calibrators.