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7.
Power on the CA 833 on position 94dB or 114dB (choose the level closest to the
high limit of the measurement range selected for the calibration).
8.
Adjust the sound meter until display reaches the sound level selected.
5. BATTERIES REPLACEMENT
1.
Remove batteries compartment protection cover
2.
Change the 9V batteries
3.
Power on the calibrator to test battery life (switch from 94dB to 114dB, the 20dB
difference should be easily heard).
4.
Set back the protection cover.
7
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