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Installation
ID ISC.PRH100-A/-USB
FEIG ELECTRONIC GmbH
Page 24 von 31
M30200-0de-ID-B.doc
E N G L I S H
Power supply recommendations :
To take full advantage of the reader performance, you must use a sufficiently regulated and noise-
free power supply. Preferred is a linear power supply with 12V DC / 580 mA. When using a
switching power supply, be sure that its internal switching frequency is less than 300 kHz.
(see:
7.1 Accessories
).
Feig Article No.
Part No.
1688.000.00
ID NET.12VDC
Table 5: Recommended power supply
Note:
The power supply is delivered with a DC plug 2.5mm x 5.5mm.
3.4. Antenna terminal X4 (only ID ISC.MR100)
An SMA socket is provided on the circuit board for connecting the external antenna.
The maximum tightening torque for the SMA socket is 0.45 Nm.
(Caution: Higher tightening torque will damage the connector.)
Socket
Description
X4
Connecting the external antenna
(input impedance 50
Ω
)
Table 6: Connecting the external antenna
Note:
•
The input impedance for the 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
B
= 10...20. To
determine the operating Q the antenna must be supplied with a 50 Ohm source such as
a network analyzer or frequency generator.
•
When connecting an antenna, ensure that it does not exceed the permissible limits pre-
scribed by the national regulations for radio frequency devices.
