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record. So for example if data record time interval is 30 minutes the graph shows time behaviour of radon
concentration for last 64 hours.
Second graph shows current energy spectrum in array of 96 x 24 pixels and its parameters. Energy
spectrum is divide into 96 interval and radon concentration is calculated from intervals d1-d2 (RaA) or from
d1-d3 (RaA+RaC). Discriminations d1, d2, d3 are shows below graphs as well.
Numbers of impulses in discrimination intervals are counted during spectra record time interval (Trec)
or till then if one of particular intervals reaches 255 impulses.
Parameters on third data screen are especially service data but record time intervals are useful.
Notice: By display and button isnt possible to setup of probe. For setting of probe parameters is
neccessary to used the PC software application usbRADONview.
7
Basic Maintenance
Accumulator charging:
During portable use of radon probe is essential to monitor state of internal accumulator and recharge it if
necessary. If accumulator is discharged the probe automatically turns off. The probe is switched on again
powering USB port.
Current state of accumulator can be determined in three ways:
1) By LED diode ´STAT´ - If LED starts blinking in green-yellow color it indicates that system is working
incorrectly and one of main case is low voltage of accumulator. (see paragraph “Operation Manual /
LED diode “STAT””)
2) On wireless Central Unit display – Symbol "#" on left edge of display second line means that
accumulator voltage is low.
3) In usbRADONview application - where you can check current accumulator voltage. Voltage should
not fall below 3.5 V, in limit conditions falls below 3.3V.
Accumulator is charged via USB port using supplied USB cable. USB cable can be connected to PC or to
supplied power adapter. Connect USB cable with power to USB port of probe. LED diode ´CHRG´ next to
USB port of probe indicates charging status according to following chart:
