User Manual

HERMOS AG
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LFM 4x Reader Rev1.4
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Customer manual
LFM 4x Reader
RFID
WE GENERATE SOLUTIONS
10.4.13 I – Adjust RF module
It is necessary to adjust the RF module in ordert to adapt an antenna tot he ambient conditions
optimally. The tuning achieves an optimal read / write range for the present installation
environment. Tuning is performed one at a time for each antenna port and the determined
tuning value is stored for each antenna.
For optimal results, the vote should be automatic, but the voting value can also be set
manually.
Host  Device
CMD
Reader-ID
Tuning Value
I
1 Byte
2 Bytes
Device  Host
CMD
Reader-ID
i
1 Byte
To start the auto-tuning process, select the value 08.
Example: I108 … automatic tuning of antenna 1
If the reader can not determine the appropriate calibration, the error „5 - Invalid“ is sent instead
of the confirmation.