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Dual Magnetic Card Reader / Comms Link Wiring Connections
for the Psion Organiser II Top Slot (D).

Dual Magnetic Card Reader / Comms Link PCB Pin 1 GND Ground.
Pin 2 GND Ground.
Pin 3 DSR Data Set Ready.
Pin 4 DTR Data Terminal Ready.
Pin 5 RTS Request to Send.
Pin 6 CLS Clear to Send.
Pin 7 TxD Transmit Data.
Pin 8

RxD

Receive Data.
Pin 9 RDD Read Data Line (This changes to a logic "1" level when a "1" bit is read from the card).
Pin 10 RCP Clock Pulse for synchronisation of reading-data (This is used to sample the data line and changes to a logic "1" when clock signals encoded on a card are detected).
Pin 11 CLS Card Detect. Detects presence of a card in the Swipe Reader (This goes to logic "1" while Data is being read from the card).
Pin 12 Vcc Power Supply +5 Volts.
Pin 13 GND Ground.

(Magnetic Card Reader connections are in Red.)

Top Slot (D) Index page

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