Make a note of this number and the other settings listed: you will need to enter them in your data acquisition software. Select your converter and click Properties. If the COM port number is too high, use Device Manager to reassign the COM port to a lower number. Windmill, for example, accepts COM ports 1 to 24. You may find that Windows assigns your converter a COM portnumber that is higher than your software can handle.(A question mark indicates that there is a problem with the drivers or the connection.) It will look something like'USB serial port(Com X)', where X is the COM portnumber assigned. To find the COM port number open Windows Control Panel and choose first System then Device Manager then Ports. Windows will assign the USB converter a COM port.If you don't have any driver software then check with the manufacturer. Plug theconverter into the PC's USB port and install its driversoftware.Here are some tips on using a USB-to-Serial converter. The converters are simple to use but sometimes need careful settingup if they are to work properly.
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