User manual

Device using
Switching on the device
To switch on the device press the «OFF» button (page 8)
and the screen «RD1503+» will be displayed.
The sequence of survey
After switching on the device the examination of the
radioactive environment starts. During the time of
observations each registered quantum of radiation is
accompanied by a displayed presentation of the icon« »
(page 10) and a short audible signal, if the sound is switched
on and the threshold is off. The frequency of occurrence of the
icon on display is proportional to a dose rate. 10 seconds after
switching on the unit, the first result of a short cycle and its icon
are displayed:
 equal to the first short cycle of monitoring;
 equal to the second short cycle of monitoring;
 equal to the third short cycle of monitoring.
The second and third short cycles of observation
average over automatically.
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