Feig Electronic OBID i-scan ID ISC.MAT-B, Монтаж, установка

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OBID i-scan
®
Montage / Installation ID ISC.MAT-B
FEIG ELECTRONIC GmbH Page 13 of 19 M70101-0e-ID-B.doc
6.3 Determining Q
The antenna Q is set using the series resistors R1 and R2 before tuning using solder jumpers on
the solder side to 0, 1, 2 or 3
Ω
.
The antenna Q affects the antenna current, the bandwidth and the sensitivity of the antenna to
changes in the surroundings. It depends on the desired read range and the national RF
regulations. In the standard setting the series resistance is 3
Ω
. The series resistors can be
enabled and disabled using jumpers or a solder jumper on the underside of the circuit board.
Tab. 2 lists the possible series resistance settings.
Tab. 2: Series resistors
Jumper R
series
J10 and J9 in
0
Ω
J10 offen, J9 in
1
Ω
J10 in, J9 out
2
Ω
J10 and J9 out
3
Ω
Fig. 10 shows insertion of the solder jumpers J9 or J10 on the solder side of the circuit board:
Fig. 10:Solder jumpers J9 and J10 in
J10 J9
R1=1
Ω
R2=2
Ω