EAS SYSTEM WITH WIDE EXIT COVERAGE AND REDUCED OVER-RANGE

摘要

System for preventing detection stationary identification marker in adetection zone of an electronic article surveil-lancesystem. The system includes a transmitter for transmitting an exciter pulsefor exciting an identification marker, and a receiversystem for receiving a characteristic response energy emitted by anidentification marker in an inhibit field of the detection zone andin a main area of said detection zone. A comparator system is provided forgenerating an alarm condition when the characteristicresponse energy received in the main area exceeds the characteristic responseenergy received in the inhibit field by a predeterminedthreshold value.