OBID
®
Installation
ID ISC.ANT300/300-A
FEIG ELECTRONIC GmbH
Page 29 of 43
M01001-2de-ID-B.DOC
E N G L I S H
The antenna is connected directly to the reader with the help of the connecting cable and the SMA-
plug. For industrial environments, we recommend to insert the ID ISC.ANT.T transformer between
reader and antenna.
Figure 14: Wiring diagram - reader with transformer and base antenna
In order to suppress possible interferences, reader ID ISC.LR200 is equipped with two toroidal
cores. As far as possible, one of these toroidal cores should be integrated into the antenna con-
nection cable. For this purpose, the coaxial cable has to be pulled through the core 4 times and
has to be located as close as possible to the core. The maximum distance between reader and
toroidal coures should be 10 cm.
Figure 15: Assembly of the toroidal core at the coaxial cable
Please also observe the following recommendations:
•
Up to a distance of 50 cm, the antenna cable should always be lead away from the antenna
vertically and installed permanently.
•
In order to obtain an optimum reading range, the antenna connection cable should not be
shortened or extended. If an extension is absolutely necessary, please use a 50
Ω
cable with a
length of
2
λ
(half the wavelength at 13,56 MHz, RG58=7,20 m). However, this may lead to a
minor sensitivity reduction (approx. 2 cm readding range / extension).
•
Please keep a minimum distance of 30 cm between the antenna cable and all parallel, power
cables.
After the installation has been completed, an operational check can be performed with the help of
the reader and a smart label. With a transmitting power of 4W and a label size of 70 mm x 54 mm
(ISO-card size) the reading range in the centre of the antenna should be approx. 50 cm – 55 cm.
Otherwise, the adjustment of the antenna to the impedance of 50
Ω
should be checked with the
help of an SWR – Meter. In addition to that, you should also check the noise level at the reader.
Reader
ID ISC.ANT.T
ID ISC.ANT300/300
