ECOTEST TERRA-P MKS-05 Operating Manual page 31

Press the MODE button once again and hold it pressed for four seconds to switch
the dosimeter off.
6.3.2 Measurement of gamma radiation DER
The mode of gamma radiation DER measurement is entered automatically after
the dosimeter is switched on. The mode is indicated by the "µSv/h" symbol that
appears on the LCD and short-term audio signals following the registered gamma
quanta. The results of measurement will appear on the LCD during the first few
seconds, enabling efficient evaluation of the radiation level.
Since the dosimeter provides constant averaging of measurement results, every
next value update on the LCD is followed by a process of its averaging. Therefore, it
is possible to receive the readings approximately in a minute with a precision within
the limits of rated error. The time needed to get a reliable result depends on the
radiation intensity. During that time the digits on the LCD will be blinking.
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