ECOTEST PRD GUARDER DKG-24 Operating Manual page 20

You can use the navigation buttons to change the operating
modes of the device, its settings, and navigate through the menu.
The ENTER button serves to save settings, confirm entered data,
recalibrate, switch on the device, as well as enter and exit the
software update mode.
2.3.2.2 A graphic monochrome display is used to control
the device operation.
2.3.2.3 During operation, the device generates the
following vibration-sound and light signals.
2.3.2.3.1 Vibration and sound signals:
"Quantum" – is a sequence of short beeps that indicate the
intensity of registered quanta of photon ionizing radiation. The
frequency of the signal is proportional to the count rate of photon
ionizing radiation quanta. Signal "Quantum" can be enabled or
disabled only in the mode of the intensity histogram display.
"Sigma threshold level exceeding" - periodic light, sound
and/or vibration signals, which indicate that the set intensity
threshold of photon ionizing radiation quanta count rate has been
exceeded. When the light and sound signals are turned off, the
frequency of the vibration signal will be proportional to the
count rate of photon ionizing radiation quanta.
"Safety threshold level exceeding" – periodic light,
sound and/or vibration signals generated when the measured
value of photon ionizing radiation DER is higher than the safety
threshold level.
"Exceeding the accumulated dose threshold level" –
periodic light, sound and/or vibration signals that are generated
if the measured DE value of photon ionizing radiation exceeds
the threshold level.
"Low battery" – periodic light, sound and/or vibration
signals that indicate a significant discharge of the device battery.
These signals can be completely disabled.
"Turning the device on/off" – polytonic sound, vibration
and light signals, which indicate that the device was switched on
or off. These signals can be completely disabled.
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