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Interfacing to a Host Computer
Figure 14 and Figure 15 show the location of the Universal Port Connector and the connector pin assignments.
Caution: Do not make any connection to pins 4 or 8. These pins are used only for Psion Teklogix accessories
and improper connections with these contacts may cause severe damage to the printer. Such damage
will not be covered by the printer’s warranty.
Connecto
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Figure 14 - Universal Port Connector
Pin # Signal Description
1 COM Logic Common
2 TXD Transmit Data (From Printer)
3 RXD Receive Data (From Host)
4 Reserved Do Not Connect
5 CTS Clear To Send (From Printer)
6 COM Logic Common
7 RTS Request To Send (From Host)
8 Reserved Do Not Connect
Figure 15 - Connector Pin Assignments
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Bluetooth Interface
In addition to the standard Serial Interface, your PrintAbout may be equipped with an optional Bluetooth
Interface. Bluetooth interfaces are built into some Smartphones and PDA’s and may be added to most others.
Bluetooth interfaces may also be added to notebook or desktop computers. To communicate using the
Bluetooth Interface, it must be selected as the currently active interface.
The Bluetooth Interface uses wireless, radio frequency signals to communicate.
The PrintAbout Bluetooth Interface acts as a “serial port adapter” operating as a “server”. Being a serial port
adapter means, the printer may appear as a “Serial Device” when discovered, rather than as a “Printer”.
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