Leadtek Research Inc LR9553 Manual De Usuario

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7. Click "View" and then select "Development", and 
the NMEA output messages from Leadtek GPS 
9553 will be displayed on the screen.
*PS: After using the navigator software, please remember to 
disconnect (click "Tool" -> Disconnect) or exit to release the COM 
PORT so it can be used by other navigation software.
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