Feig Electronic OBID i-scan ID ISC.M02, Руководство по установке

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OBID i-scan
®
HF Installation ID ISC.M02
FEIG ELECTRONIC GmbH Page 18 of 27 M20301-4e-ID-B.doc
Use caution when the maximum value of the signal amplitude is reached at the minimum or maxi-
mum position of the trim capacitor (Fig. 10). This usually means the antenna is too severely de-
tuned by the surroundings and can no longer be fully compensated by the trim capacitor.
Beschriftung
Minimale
Kapazität
Maximale
Kapazität
Fig. 10
: Minimum and maximum position of the trim capacitor C65
After the antenna has bee tuned, check it again for maximum range and any communication gaps.
NOTE:
•
Notwithstanding the possibility of retuning the antenna as described here, the distance
between the reader and the surrounding metal surfaces must be at least 3 cm. Note that
even other circuit boards may act like metal objects depending on how much copper
they contain.
Labeling
Minimum
capacitance
Maximum
capacitance