Operating instructions

1892 1344 - SX450G Transceiver Operator Guide v1.7 / Nov 2007 27
APPENDIX 2: PCS WITHOUT RS232 SERIAL PORTS (COM PORTS)
Some laptops and PCs are no longer supplied with RS232 serial ports; in this case, a
USB-to-RS232 adaptor can be used to connect the PC running SXn50.EXE to the
SX450G.
Wood & Douglas have tried a range of adaptors and recommend the EasySync
US232B/LC, which has been tested with Windows 2000 and Windows XP.
v Further information and a downloadable manual can be found at
www.easysync.co.uk/usbrs232_single.html.
1. Installing the Adaptor
The adaptor is supplied with printed instructions and an installation disc. Before
plugging the adaptor into the host computer’s USB port, insert the installation disc
into the PC’s CD-ROM drive, then follow the on-screen instructions for your version
of Windows.
When the installation is complete, proceed as follows to find its COM port number:
1. Open the Control Panel (Start, Settings, Control Panel) and open the
System control.
2. Select Hardware, Device Manager and expand the Ports (COM & LPT)
folder.
3. Find the entry labelled “USB Serial Port (COM n)” and note the number n.
4. Close the Device Manager, System and Control Panel windows.
If there is no USB Serial Port (COM n) entry, remove and re-insert the adaptor in
the USB port. If this fails to clear the problem, uninstall the adaptor and repeat this
section.
2. Connecting the Command Centre PC and the SX450G
With the USB Serial Port Adaptor plugged into the PC USB port, connect the
adaptor cable (Figure 9) from the SX450G serial port to the USB adaptor serial
port and the power supply, and turn the power supply on.
3. Configuring the GUI
Run the GUI, select Port Setup from the menu bar and click Com Port. From the
list of ports, select the number of the COM port found in the previous procedure.
When the GUI sends data to the unit, the red LED on the adaptor flashes. When
the unit replies, the green LED on the adaptor flashes.