Pins And Connections - Psion Teklogix Psion User Manual

Chapter 3: Docking Station And Serial Port

Pins And Connections

3.2.2 Pins And Connections

netpad Pin netpad Function 9-way D Pin
1
2
3
4
5
6
7
8
9
10
not connected
Note: Pins 6 and 10 can carry power to peripherals, but are only powered on
newer netpad models. RS-232 ports that can carry power are standard on
all netpad models, and can be identified by their orange plastic casing.
The powered serial port allows you to connect to various peripherals
such as an RFID reader, Bluetooth module, or a tethered imager.
The equivalent pins on the docking station have no power.
The current standard null modem cable for netpad is P/N A2203 0004 0001. It has a
grey sleeve, with the part number printed on the cable.
In both directions, DTR at one end is connected to both DCD and DSR at the other.
To assist in creating cables to interface with other devices, the current serial cables
contain a wire to each pin of the netpad, running the full length of the cable. The
wires to pins 4 and 9 are only joined in the 9-way plug—they will be separate data
lines if the 9-way pin is cut off.
Note: An older (black-sleeved) null modem cable is not intended for modifica-
tion, and does not have full-length wires to each pin on the 10-way plug.
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Psion Teklogix netpad Windows CE .NET 4.2 User Manual
TXD 2
RTS 8
Ground 5
DSR 4
CTS 7
3.3 volts not connected
DTR 1 and 6
RXD 3
DCD 4
7.2 volts not connected
shell
Table 3.2 Standard Null Modem Cable
9-way D Function Wire Colour
RXD black
CTS brown
Ground red
DTR orange
RTS yellow
green
DCD, DSR blue
TXD purple
DTR grey
white
drain wire