User's Manual
Sentinel Installation Manual
6
alarming, then it means RAD has increased its radiation and field range to cover the location where
tag located.
Vise versa, if tag doesn’t alarm even tester bring tag two more meters away from the protected area
boundary, then it means the RAD has too big of field and coverage is too big. Operator can decrease
the RAD’s radiation and field range.
The procedures to tune down radiation are: point remote control to one RAD that is paused within 5
meters distance, press arrow DOWN button on remote control. If at the boundary location, tag starts
alarming, then it means RAD has decreased its radiation and field range back to boundary.
Repeat this process until all field RADs have been properly tuned, at which time the overall field RAD
tuning process is complete.
3. Synchronization for Field RADs
All Field RAD must be powered by same 24vac power source – this make sure all Field RADs receive
a common power phase signal to sync with each other.
Synchronization is determined to be proper when the LED on each Field RAD is flashing at a once
per second rate. If the flashing is too fast, e.g. 5 flashes per second, this signifies the Field RAD
doesn’t detect the qualified synchronization signal from 24vac power. The situations may be listed as
below
1. the 24vac power source is not 50Hz or 60Hz power system. - Field RAD only recognize 50Hz or
60Hz frequency of 24vac power.
2. the 24vac power source is impure – excessive interference from 24vac power may make field
RAD unable to sync with the 24vac power phase.
3. If field RAD is mistakenly powered by DC power, the RAD also will be unable to sync.
.
4. Tune EAS RAD
Point the Remote to the EAS RAD and press the Resume button to activate it. Move the tag towards
the exit to determine where EAS RAD Field takes over and causes the tag to self-alarm. There is no
rule on defining the boundaries of the EAS RAD Field area but generally it should depend on how
close to the exit tagged articles will be placed. But it would be advisable that tags should alarm within
close proximity to the exit so that sales personnel are alerted quickly enough for timely response.