dosemeter User Manual 
Page 53
  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 
Reading 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.  
There is no Time History data for 
the measurement 
The Time History setting is 
configured to Off. 
Turn on the Time History 
download option. 
"Trace Error" There has been an error during 
the download of the Time History 
Data. 
The Reader will not download to 
the software 
The connection between the 
Reader and the PC is not correct 
Ensure that the cable is 
connected between the Reader 
and the PC. 
  The Reader is not switched on  Switch on the Reader and try 
again. 
  The AnalyzerPlus software is not 
running 
Run the AnalyzerPlus software 
from the Programs, Pulsar 
Instruments, AnalyzerPlus 
directory and try again. 
CHR22 Charger
Symptom  Possible Cause  Solution 
The dosemeter will not charge  The power is not connected to 
the Charger 
Ensure that the PS22 Power 
Supply is connected to a supply 
and to the Charger unit. 
No lights appear on the charger 
unit 
The power is not connected to 
the Charger 
Ensure that the PS22 Power 
Supply is connected to a supply 
and to the Charger unit. 
  The mains power supply is 
damaged 
Contact your local 
representative. 
The Green charging light does 
not flash when the dosemeter is 
connected. 
The dosemeter is not properly 
connected to the charger 
Screw the dosemeter fully onto 
the charger unit. 
The charger unit is not charging 
the dosemeters 
  Perform a Power-on Self-Test.  
Press and hold the 
Discharge/Charge Cycle button 
and connect the power. Hold the 
button for 2 seconds. 
The LED charge indicators will 
flash in sequence then all of the 
indicators will show.  
If the LED charge indicators 
continue to flash, contact Pulsar 
Instruments plc or your local 
representative.