User's Manual

Outline of the product
Summary
LEFX Unit System is RFID (Radio Frequency Identification) device for an
Inductive loop coupling. This system has two modules of the Reader/Writer
(LEFX-C) and Tag (LEFX-T).
- LEFX generates a 125kHz signal on an internal looped antenna.
- Transmitted data are modulated using Amplitude Shift Keying (FSK)
modulation.
- Received data are demodulated from the Tag load variation signal,
generated on the antenna.
- Tag is battery less memory with a looped antenna.
- Communication distance between LEFX-C and LEFX-T is 3mm to
13mm.
Block diagram of the product
System Requirement
The following condition shall be kept, that use LEFX unit system.
- LEFX-C must be used with the LEFX-T.
- LEFX must be internally installed in machine. (Printer)
- Supply DC Voltage must be 5V+/- 5% and 3.5V +/- 5%.
- The certification label and/or the notice of the manual may be
necessary for the final product enclosure, which contains this unit.
- Do not make the radiation time of the radio wave continue for more
than one second.
Specifications
The specifications of the product are as the following;
- Carrier Frequency: 125kHz +/- 200ppm
- Modulation: FSK
- Communication distance: 3mm to 13mm
(It means the distance of the Reader Writer Module ANT and Tag
Module ANT.)
- Supply Voltage: DC 5V +/- 5%
- Rated current: 69mA
- Signal Level: TTL (3.3V)
- Operating temperature: +5 to +32degrees C
- Maximum RF power: 4.73mW (Fixed for maximum power)