Identifikation System OBID
Page 16 of 20
FEIG ELECTRONIC GmbH
E N G L I S H
2.3 Connection of an external antenna:
Instead of connecting the internal antenna, the reader can be operated with an external antenna
as well. (Figure 1.3-1: B). The external antenna can be connected to X1 Pin 9 and Pin 10. There-
fore the connection to the internal antenna must be interrupted.
•
The simultaneously operation of internal and external antenna is not possible.
A
1
X1
10
B
X1
1
10
external Antenna
internal antenna
internal antenna
cut off there
Figure 1.3-1: alternative possibilities for the connection of antennas
For self-made antennas respect the values listed blow:
dimensions max.
200 x 200 mm
antenna coil - material
varnished copper wire
antenna coil - wire dim.
0,2 ... 0,4 mm
inductivity
490
µ
H
±
2%
resistance
3...8
Ω
supply line max.
2 m (twisted wire)
