EAW DX1208 Help File page 5

Frequently you will see several COM ports listed. Normally (but
not always) the first few port numbers are reserved for RS-232 or
other legacy serial device ports, while higher numbered ports
represent the USB ports of devices already connected to the
computer. The DX1208 must be powered on and connected to a
USB port on your computer before opening DX Navigator, or else
its USB com port number will not appear in the COM Port list.
If you are not sure which COM port the DX1208 is connected to,
open the Windows Device Manager, and locate 'Ports (COM &
LPT)' in the list. You will see 'EAWC DX Family USB Serial Port'
followed by a COM port number. Select this COM port number for
USB communications, or the appropriate 'Communications Port'
number for RS-232 communications.
Selecting the COM Port radio button restricts DX Navigator to
communicating with only the device connected to the specified
COM port, even if there are connected devices that would
otherwise be visible to DX Navigator using a different
communications protocol.
•
Obtain IP Addresses By Broadcast Sets up DX Navigator to communicate over
a local/wide area network via Ethernet. In this mode DX Navigator
polls the network using by sending UDP (User Datagram Protocol)
broadcast messages to TCP port 30718 looking for any DX
devices connected to the network, regardless of whether they are
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