USER MANUEL
LDB 2
DESKTOP READER
ASK R&D
Réf. : RD-MU-03036-10
Rév.: 1.0
5 / 10
Copyright ASK SA - 2003
2.1 READER COMPONENTS
LDB 2
consists of a control board called ”coupler board”, and antenna board, a DC supply
converter board (with two extra SAM sockets) and a contact card interface board.
2.1.1 COUPLER BOARD
The coupler board contains a microprocessor, non-volatile memory and a radio frequency
transmitting circuitry. This board communicates with smart cards via RF link (provided by an
antenna board), and to the terminal via RS-232 interface. The serial rate is set to 115,2 bps.
The coupler platforms are GEN320 or GEN325 elements which can be purchased separately
at ASK. These two OEM coupler boards are compliant with ISO/IEC14443-2 directives (Radio
frequency power and signal interface). Communications can be executed according to the
type A or type B of the directive.
Figure 1 : GEN 320-GEN 325 board
GEN 320 and GEN 325 board are strictly identical, except that on GEN 325, PHILIPS ‘s
RC500 chip is added. In this case, the chip just manages MIFARE cryptography mode.
The RC500 chip is located (or not) at the bottom of the printed circuit board (PCB).
SAM location
RS232 connector
Antenna connector
RC500 chip
TOP VIEW
BOTTOM VIEW
Figure 3 : GEN 320 board
Figure 2 : GEN 325 board
