Model 90 Quantifier Sound Level Meter
Page 22
Calibration
If a microphone extension cable is to be used during a measurement, the instrument
must be calibrated with the cable attached.
Attach the Acoustic Calibrator to the Sound Level Meter, and press the menu key. The
first menu option is Calibrate.
Key Press
Display
Comments
Select 94dB on the Acoustic
Calibrator before starting the
calibration procedure.
If the calibration is sucessful, the
instrument will display the
calibration information screen.
Press Exit to return to the main
screen.
If the instrument cannot calibrate successfully, the display will show an error:
The calibration level is too low.
The Calibrator may not be
switched on or may not be
functioning correctly.
The calibration level is too high.
Check that the calibration level on
the Acoustic Calibrator is set to
the correct level.
The default level is 94dB
