ECOTEST DKG-21 - Page 19

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3.4 Design and principle of operation
3.4.1 General information
The dosimeter is presented as a mono block including a built-in detector
of gamma and X-ray radiation, a printed circuit board equipped with a
circuit of anode voltage formation, digital processing, control and
indication, an infrared port of data exchange, and a Li-Ion battery.
Gamma and X-ray radiation detector transforms radiation into the
sequence of voltage pulses; the number of pulses is proportional to the
registered radiation intensity.
The circuit of anode voltage formation, digital processing, control and
indication features:
- scaling and linearization of the counting response of the detector;
- measurement of DER through measurement of the average pulse
frequency from the detector output;
- measurement of DE through measurement of the total number of
pulses from the detector output;