38 COM Ports
MX5 Reference Guide E-EQ-MX5PCRG-F-ARC
USB Port
The USB port (the left port when the MX5 is face up) requires a DB26 to USB cable (available
from LXE). The serial port/USB port also supports serial data transfer (using a null modem cable)
and non-host USB I/O at 1.5 Mbps. The MX5 automatically detects the cable configuration. Refer
to section titled "Accessories" in this manual for part numbers for the DB26-USB cable and the
null modem cable.
An optional LXE USB cable is required to adapt the connection to a standard USB connector.
Please refer to section titled “Accessories” for the USB part number when ordering.
MX5 Connector Pin SIGNAL USB Connector Pin
1 Not Used 1 Not Used
2 Not Used 2 From 7
3 To 3 D + (Green Wire) 3 From 3
4 Not Used 4 From 5
5 To 4 Ground (Black Wire) 5 Not Used
6 Not Used 6 Not Used
7 To 2 D - (White Wire) 7 Not Used
8 Not Used 8 Not Used
9 Not Used 9 Not Used
Figure 2-6 USB-Serial Cable Pinouts
IR Port
The InfraRed (IR) port provides a means of transferring information to a device with a similar
port and the proper software. The IR port can be used to communicate with printers or a host
computer with the use of an adapter.
Figure 2-7 IR Port on MX5
The IR Port is specified as COM 3 and is a bi-directional half-duplex infrared port. It supports the
Slow IrDA (Infrared Data Access) PHY Layer standard that allows communication speeds up to
115k baud.
When sending data through the IR port to another MX5's IR port, make sure both units are in
close proximity to each other. The IR operating envelope has a distance range of 2 cm (.79 inches)
to 15 centimeters (6 inches) with a viewing angle of 30 degrees.
