OBID
®
Installation
ID ISC.M02
FEIG ELECTRONIC GmbH
Page 40 of 42
M20301-0de-ID-B.doc
E N
G
L I S H
8.5.3. EMC effects from magnetic fields
Since in this type of RF-ID-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.