ECOTEST PRD GUARDER DKG-24 Operating Manual page 22

Note 1. Calibration by the level of gamma background is
done automatically when the device is switched on, or as
required by the user. Calculation of the search sigma threshold
level of the alarm is performed regardless of the device operating
mode.
Note 2. For manual recalibration, while in the DER
measurement mode, press and hold the ENTER button for at
least 3 seconds. The DER value will start flashing.
The device features the mode of audio alarm of registered
gamma quanta of photon ionizing radiation, which turns on and
off only in the mode of intensity histogram display. To
enable/disable this mode, press and hold the ENTER button for
at least 3 seconds. To recalibrate the sound intensity level,
briefly press the ENTER button.
Each short press of the ">" button switches the device
between the modes in the following sequence:
- the mode of DER measurement and indication;
- the mode of intensity histograms display;
- the mode of DE measurement;
- the mode of the dosimeter setup, which contains the following:
• Display
• Sound
• Vibro
• Light
• Language
• Location
• Connectivity
• Measurement
• Time and date
• Additional setting
• Device info
• Device off
• Back
Pressing the "<" button switches the device between the
modes in the reverse sequence.
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