Quatech QSP-200/300 - Manual (Page 15)

information on how to change these settings, got to the section labeled "Changing
Configuration of the QSP-200/300".
7. Use the Logical Com Port name to access any of the particular serial ports on the
QSP-200/300. This name is required by a Windows 2000 application when accessing
a particular port.
QSP-200/300 User's Manual 9