OBID
i-
scan
®
HF
Installation
ID ISC.M02.M8-B
FEIG ELECTRONIC GmbH
Page 11 of 15
M90402-1e-ID-B
3.3.3 EMC effects on cables
In spite of the internal EMC filters inside the reader, high levels of noise on the supply voltage can
result in impairment of the communication between the reader and transponder.
When installing an reader module into another device, be sure therefore that a clean, noise-free
power supply is used.
3.3.4 EMC effects from magnetic fields
Since in this type of RFID-Technology the communication between the reader and transponder
takes place by modulation of a magnetic field, alternating magnetic fields in the vicinity of the an-
tenna can have a negative impact on its function.
Sources of such magnetic interference fields include coils within a primary or secondary switching
power supply.
When determining the position of the reader and antenna within a device, check the device for any
possible sources of interference as described above. If necessary, use shielding to suppress such
interference.
