User's Manual

OBID i-scan
®
Installation
ID ISC.ANT800/600-DA
FEIG ELECTRONIC GmbH
Page 29 of 42
M50101-2de-ID-B.doc
E N G L I S H
9.2 Notes on routing the antenna cable
Note the following when routing the cable and constructing individual antennas or antenna gates:
 The antenna cable must always be routed in place before tuning.
 Up to a distance of 50 cm the antenna cable should always be routed vertically away from the
antenna.
 If the cable needs to be routed closer along the antenna, keep a distance of at least 20 cm.
 Routing the antenna cable through the antenna itself is always detrimental.
 To achieve optimum read ranges, the antenna cable should not be shortened or extended. If an
extension is absolutely necessary, this can be done using a 50  cable of length /2 (ID
ISC.ANT.EC Extension Cable, half-wavelength at 13.56 MHz, RG58=7.20 m). A slight loss of
sensitivity must then be taken into account.
 The antenna cable must be kept a distance of at least 30 cm from parallel routed current-
carrying cables.
To suppress possible interference, an EMC ring core with an O.D. of 28 mm should be installed in
all antenna cables and the power splitter. Wind the coax cable at least four times tightly through
the EMC ring core as shown in the illustration. The distance between the Reader connection and
the ring core should be a maximum of 10 cm.
Fig. 6: EMC ring core installed on an antenna cable