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3.1
Sound Pressure Calibration
3.1.1
General
To open the unit, lift the black handle into the vertical position and turn it anticlockwise through
90°, as shown in Fig.3.1.
Fig.3.1
To open the unit, lift
the handle and turn it
90° anticlockwise
Place the calibrator on a clean, flat surface. Lift the upper half to a near vertical position and
remove the protection plug, shown in Fig.3.2.
✐
The black plastic protection plug is designed to be fitted in the calibrator to prevent dust
Please note:
and dirt entering the acoustic chamber when the instrument is not in use.
Calibration Procedure with Type 2260-E
Chapter 3
Investigator™
15
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