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SERIAL IrDA Communication Interface
§ This section summarizes the operating features of the Extech S2000T printer series with
built in Infrared Data Receiver Interface (IrDA)
§ The IrDA Interface is designed for reception of serial data and no interconnecting cables
are required for data transfer. It conforms and exceeds Infrared Data Association protocol
specifications for secondary station, as specified in IrDA-1 standard.
§ Three layers of the IrDA protocol specifications are supported:
• the IrDA Serial Infrared Physical Layer
• the Link Access Protocol (IRLAP) and
• the Link Management Protocol (IRLMP)
§ Additionally, we have implemented IRComm 3-wire raw as a file transfer protocol for
communication of decoded magnetic card data from the printer to the host computer (see
Section X)
§ Dip switch #8 ON, selects the IrDA interface. The Green <READY> is illuminated on
power-up if the IrDA interface is selected.
§ The table below lists the IrDA interface specification.
Protocol Compatibility: IrDA Version 1 IRLAP and IRLMP compatible.
Carrier: Infrared light
IrDA physical layer compatible
peak wavelength 850 to 1050 nm
Communication Distance: 0 cm to 100 cm
Transmission Speed: Default to 19200
negotiable 2400 to 19.2k
Parity bit: none
Data bit: 8 bits
Stop bit: 1
Error check: CRC
