Computer Accessories User Manual

COM Ports 43
E-EQ-MX5CERG-F-ARC MX5X Reference Guide
USB Port
The USB port (the left port when the MX5X is face up) requires a DB26 to USB cable (available
from LXE). The connector is an industry-standard RS-232 DB26 female connector.
Figure 2-7 MX5X USB Port
The serial port/USB port also supports serial data transfer (using a null modem cable) and USB
I/O at 1.5 Mbps. The MX5X automatically detects the cable configuration. Refer to section titled
Accessories in this guide 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.
MX5X Cable End Cable Signal USB Cable End
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 2-8 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 2-9 IR Port on MX5X
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 MX5X IR port, make sure both units are in
close proximity to each other. The IR operating envelope has a distance range of 2 cm (0.79
inches) to 15 centimeters (6 inches) with a viewing angle of 30 degrees.