AEG COMPACT READER ARE I2 - Manual (Page 28)

Manual
Page 28 / 33- Revision 01
ARE I2 / RS 232 – Installation Guide
AEG
Identifikationssysteme GmbH
Söflinger Straße 100
D-89077 Ulm
Tel. ++49(0)731-933-1340/1877
Fax ++49(0)731-933-1855
e-mail: [email protected]
8 Instructions
8.1 General Instructions
To avoid any reduction of the reading distance of the reader, the housing 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!
To get reliable readings, the distance between reader and transponder must be within the speci-
fied reading volume.
The reading characteristic in front of the reader is not isotropic. It depends also strongly on the
orientation between Reader and Transponder. To get the maximum reading distance, the ori-
entation between reader and transponder must be well suited. The best orientation depends on
the type of antenna inside of the housing ( ferrite – type or plane coil type) and the applied
transponder (disc or glass transponder)
To get a reliable readings or writings, the time of transponder while crossing the sensitive area
of the antenna must be co-ordinated to the data transfer characteristics of transponder
In general the time depends on the speed of the transponder, the size of the transponder and
the way the transponder is mounted on the vehicle and must be verified by field tests.
Environmental electromagnetic noise may also reduce the read and write range considerably.
Arrangement to eliminate such troubles must be done specific to the application by the help of
engineers of the manufacturer.