OBID
®
classic-pro
Installation
ID CPR.M04.P-AB-U2
FEIG ELECTRONIC GmbH
Page 20 of 24
M70100-0de-ID-B.doc
E N G L
I S H
3.5 Installation
notes
Be aware of the following possible environmental factors when installing an ID CPR.M04.P/AB-U2
into another device.
3.5.1 Metallic
surroundings
When installing an ID CPR.M04.P/AB-U2 into another device, be sure that there are no metal sur-
faces or objects in the direct vicinity of the reader if possible. These can detune the antenna and
thus reduce the magnetic field of the integrated antenna. This will in turn result in reduced read
distances for the reader.
The distance between the reader and a metal surface should be at least 3 cm. Note that
even other circuit boards may act line metal objects depending on how much copper they
contain.
If a metallic surrounding cannot be avoided, stable function should at least be ensured by keeping
the distance as great as possible.
The area between the antenna and transponder as well as the area on the other side of the trans-
ponder should also be kept clear of metal parts.
Since any change in the metallic environment will result in detuning of the integrated antenna and
therefore to impaired function, no moving metal parts, such as metallic fans, should be allowed in
the vicinity of the reader.
3.5.2 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 ID CPR.M04.P/AB-U2 into another device, be sure therefore that a clean,
noise-free power supply is used.
3.5.3 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.
