User's Guide

LSP3A Clear User’s Guide
It is only for internal use and shall not be spread without permission
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8.1 Sources of Interference
The following devices may cause interference with EAS systems if they are close to the
pedestals:
 INVENGO RFID tag readers and programming devices
 computer monitors or screens (cathode ray tubes)
 radio transmitters
 short-wave radios
 high power music systems with D-class amplifiers
 some industrial vacuum cleaners
 high-frequency fluorescent lights (if very close to pedestals)
 neon or halogen lights such as advertising signs
 equipment using switch mode power supplies
 data or power cables within 400 mm
 illuminated exit signs generating noise between 80 and 100 kHz
 digital phone lines (wideband noise) within 200 mm
These distances are subject to site variables. Distance may be
smaller under some conditions. Metal frames on furniture and fixture items
may interfere with the EAS system if they are too close. This is because
energy from the antenna can couple into the metallic frame and be
transmitted to INVENGO RFID tags and antennas several meters away.