User Guide

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The antenna must not be brought next to a metal surface. This could lead to a significant change of
the properties of the antenna circuit, which in turn reduces the reading range considerably. Please
take account to the installation manual of the antenna!
Environmental electromagnetic noise may also reduce the specified reading performance.
Special hints to overcome these problems are documented in chapter 3 and in the installation manuals
of the antenna.
The antenna is connected to the reader by the antenna cable. The typical length of the cable is 5 m.
3 Project Planning
For proper function of the identification system attention should be paid to the mounting of antenna
and antenna cable according to the rules, pointed out in the installation manuals of the antenna and
the reader.
Make shure that the reader box is grounded. Otherwise the reading distance can be reduced signifi-
cantly and the electronics can be damaged by electrostatic discharge.
To get reliable readings, the distance between reader and transponder must be within the specified
reading volume.
The reading characteristic in front of the antenna is not isotropic. To get the maximum reading dis-
tance, the orientation between antenna and transponder must be well suited. The best orientation de-
pends on the type of antenna. Please take attention to the installation manual of the antenna.
To get reliable reading performance, the time of the transponder while crossing the sensitive area of
the antenna must be co-ordinated to the data transfer characteristics of the transponder. In general
the time depends on the speed of the transponder, the size of the transponder and the way the tran-
sponder is mounted on the vehicle and must be verified by field tests.
Environmental electromagnetic noise may also reduce the read range considerably.
Arrangement to eliminate such troubles must be done specific to the application by the help of engi-
neers of the manufacturer.