User manual

307
Appendix
Class 1 Sound Calibrator
(Refer IEC61672-1 paragraphs 5.2.1, 5.2.7, 9.3d)
If an obligatory calibration is required for the sound level meter,
in accordance with the type approval, then the Class 1 Sound
Calibrator CAL200 should be used.
Technical Details
Type: Larson Davis CAL200•
Level correction: -0.1 dB•
Calibration frequency: 1 kHz (= reference frequency)•
Calibration level: 114 dB (= reference sound pressure level)•
Details for Calibration
The calibration has to be executed according to the instructions
given in chapter “Calibration”. Ensure that the calibrator is set
to 114 dB.
Add the free-field correction values to the reference sound
pressure level, and enter the result into the XL2-TA under “Cali-
bration Level“.