Feig Electronic OBID i-scan ID ISC.LR200 Series, Montage, Installation

Page: 36 / 50

OBID
®
i- scan Installation ID ISC.LR200
Page 36 of 50 FEIG ELECTRONIC GmbH
E N
G
L I S H
10.2. Antenna connection
One SMA socket is provided on the lower circuit board for connecting the basic antenna by using
the ID ISC.LRM200-A or in the case of ID ISC.LRM200-B, two SMA sockets are provided for the
basic and complementary antenna combination. The maximum tightening torque for the SMA
socket is 0.45 Nm.
Terminal Description
X1 For connecting the complementary antenna
(only ID ISC.LR200-B)
X2 For connecting the basic antenna
(Input impedance 50
Ω
)
•
The input impedance for the base antenna should be calibrated to a value of 50
Ω
Ω Ω
Ω ±±±±
(3
Ω
Ω Ω
Ω
∠ ∠ ∠ ∠
3°).
•
The optimum operating Q factor of the antenna should be in a range of Q
oper
= 10...30. To
determine the operating Q the antenna must be supplied with a 50 Ohm source such as
a network analyzer or frequency generator.
•
To achieve optimum read distances, the length of the antenna lines should not exceed
3.6 m
±±±±
0.1 m.
•
To meet national requirements for radio frequency devices every antenna line must be
fitted with one of the supplied EMC ring cores
∅
∅ ∅
∅
28 mm x 20 mm. The antenna line must
be wound around the ring core for at least 4 turns. The distance between the Reader
termination and the ring core should be maximum 10 cm (see Fig. 9.2.-1).
•
When connecting an antenna, ensure that it does not exceed the permissible limits pre-
scribed by the national regulations for radio frequency devices.
Fig. 10.2.-1: Antenna line with EMC ring cores