Notice: Leaving the SA 30 reduction adapter in the chamber of the calibrator is
equivalent with the state of the microphone being left inside. Hence, the calibrator
will switch off automatically after 3-5 minutes from the moment the adapter is put
inside the calibrator.
Table 1. Functional description of the calibrator’s button.
Button press Function description
Short, less than 3 sec. Turn on the device
Over 10 sec. Full reset of the system
Button press Function description
Short, less than 3 sec. Change the range of the device
Over 3-5 sec. and below 10 sec.
Turn off the device
Over 10 sec. Full reset of the system
2.2.3. Range diodes
In normal mode of operation, the calibrator’s diodes act as range indicators. In this mode
diode of the chosen range is lighting with continuous light, indicating that the device is ready
for to start the calibration procedure (see Picture 4).
After the calibrator is put on the microphone, switched on or the range is changed,
acoustic pressure inside the calibrator’s chamber is adjusted to the desired level. During that
process appropriate range diode blinks with a frequency of 2 Hz.
Notice: Calibration should not be performed until the range diode is lighting with
continuous light.
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