dosemeter User Manual 
Page 52
The indicator does not show 
when the dosemeter is shaken 
The dosemeter is already awake  Point the Reader Unit at the 
dosemeter and press the Stop 
key. The indicator will flash if the 
dosemeter is awake. 
The dosemeter runs for 1 minute 
and then stops 
The dosemeter was not reset 
before the measurement was 
started. The low battery flag is 
still set in the dosemeter. 
Ensure that the dosemeter was 
Reset before Calibration to clear 
the low battery flag. 
There is no Time History data for 
the measurement 
The Time History setting in the 
Reader is configured to Off. 
Turn the Time History download 
function on. 
The MODEL 22R Reader
Symptom  Possible Cause  Solution 
The Reader will not switch on  The Reader Batteries are flat  Replace the batteries in the 
Reader unit. 
The Reader gives an error when 
Resetting the dosemeter: 
"No Badge"
The dosemeter battery is flat  Charge the dosemeter. 
  The Infrared window on the 
dosemeter is not aligned with 
the Infrared Port on the Reader  
Align the Infrared window on the 
dosemeter with the Infrared Port 
on the Reader unit. 
  The ambient light is too high and 
is interfering with the Infra Red 
Communications. 
Avoid using the dosemeter in 
very bright sunlight. Shield the 
Infra Red windows from very 
bright light. 
The Reader gives an error when 
Resetting the dosemeter: 
The dosemeter is a MODEL 20 or 
a MODEL 20-TH and the 
configuration is not supported by 
these units. 
Change the configuration to suit 
the MODEL 20 or MODEL 20-TH 
dosemeters or use a MODEL 22 
dosemeter.  
The Reader gives an error when 
calibrating the dosemeter: 
"No Badge"
The dosemeter battery is flat  Charge the dosemeter. 
"Too Low" The dosemeter is not pushed 
into the Acoustic Calibrator 
Insert the dosemeter into the 
Acoustic Calibrator cavity on the 
Reader unit. 
The ambient light is too high and 
is interfering with the Infra Red 
Communications. 
Avoid using the dosemeter in 
very bright sunlight. Shield the 
Infra Red windows from very 
bright light. 
The Reader gives an error when 
Calibrating the dosemeter: 
The dosemeter is a MODEL 20 or 
a MODEL 20-TH and the 
configuration is not supported by 
these units. 
Change the configuration to suit 
the MODEL 20 or MODEL 20-TH 
dosemeters or use a MODEL 22 
dosemeter.  
The Reader gives an error when 
downloading (Reading) the 
dosemeter: 
"No Badge"
The dosemeter battery is flat  Charge the dosemeter. 
  The Infrared window on the 
dosemeter is not aligned with 
the Infrared Port on the Reader  
Align the Infrared window on the 
dosemeter with the Infrared Port 
on the Reader unit.