HERMOS LFM LP Reader - Adjust RF Module

Protocol description ASCII, SECS/HSMS
Customer manual
Version 1.2
LFM LP Reader 15.01.2019
Page 53 of 119
HERMOS AG
Gartenstrasse 19 Tel. +49(9279) 991-0
D-95490 Mistelgau Fax. +49(9279) 991-100
10.4.12 I – Adjust RF module
It is necessary to adjust the RF module in order to adapt an antenna to the ambient conditions
optimally. The tuning achieves an optimal read / write range for the present installation environment.
Tuning is performed one at a time for the antenna port and the determined tuning value is stored for the
antenna.
For optimal results, the vote should be automatic, but the voting value can also be set manually.
Host  Device
CMD
Reader-ID
Vote value
I
1 Byte
2 Bytes
Device  Host
CMD
Reader-ID
i
1 Byte
To start the auto-tuning process, select the value 10.
Example: I110 … automatic tuning of antenna 1
If the reader can not determine the appropriate calibration, the error "5 - Invalid" is sent instead of the
confirmation.