RoyalTek RGM-2000 - Manual (Page 30)

You can check the Com port number of the Sapphire from Device Manager.
It is COM3 in this example.
Step 3:Place your Sapphire on the outside roof of your vehicle with magnetic base.
Step 4:Power on your Notebook PC or Handheld PC.
Step 5:Choose the correct COM port for running the map or navigation software.
Step 6:Run the Sapphire test program. Please refer to “How to test your Sapphire”.
Notice:
(1) Make sure the power is off before started.
(2) For safety reason, please do not install Sapphire while driving.
(3) To receive NMEA0183 navigational data, please use the Hyper Terminal program
of Windows 2000

. Please setup the COM port connected with Sapphire to:
Baud rate : 4800
Data bit : 8
Parity : None
Stop bit : 1
Flow control : None.