5 RFID Antenna
To send and receive data to and from passive RFID tags the DMI15 includes a HF RFID
antenna (13.56 MHz, 50 Ohm) The antenna is located centered at the front of the housing.
The antenna center is indicated by the top print.
The transponder should be aligned parallel to the top cover of the box.
The reading range can be up to 10cm for credit card size transponders.
The reading range will depend to a great extent on the size, power consumption and quality
of the transponder and needs to be evaluated for each application individually. Make sure
to have enough margin to allow for deviations in transponder read range.
Make sure there is enough distance to other HF RFID readers and other devices using the
13.56 MHz ISM frequency band.
Technical Documentation metraTec DMI15
Page 11 of 18
