Mount the sound calibrator on the microphone. Select the physical input to calibrate (e.g. S1) where this microphone set is connected in the Input menu.
Manual calibration:
Select "Manual" calibration and turn the calibrator on. Select e.g. 1 kHz and 114 dB. The spectre of the calibration tone will be displayed.
Tap on this spectre picture and select a network (C) or the corresponding 1/3rd octave frequency using the right/left cursor buttons.
The sensitivity of the analyser can now be adjusted up and down in 0.1 dB steps until the expected dB level is obtained.
A line diagram is also shown giving the historical values of calibration results. The Red line in this diagram
is the calibration results obtained in a calibration laboratory, while the blue line represents all the field checks or calibrations that
are performed by the operator.
Please be aware that something may be wrong either with the transducer or with its settings if it is a need to change the sensitivity with more than a few tenths of a dB.
Automatic calibration - remains to see.