Справочник Пользователя для RoyalTek rgm-2000

Congratulation on your purchase of Sapphire, offering diverse GPS (Global 

Positioning System) applications. Sapphire represents the latest ingenious GPS 

technology from the leading GPS receiver manufacturer. Connecting to the notebook 

PC implementing a map or navigation software, Sapphire helps you locate one or 

multiple objects, conduct personal & vehicle navigation, and/or apply for 

geographical surveys. 

 

Before you start up, make sure that your package includes the following items. If any 

items are missing or damaged, contact RoyalTek immediately. Please refer to the 

contact information on the last page of this manual.   

 

 

◆GPS Receiver  ◆  Cable(RS-232 or USB)   

 

◆CD Disc 

 

In 1974 the USA Department of Defense set about developing a Global Positioning 

System (GPS), a constellation of 24 satellites that Orbits 12,000 miles above the Earth. 

Using triangulation of signals from four of the satellites, a receiving unit on earth can 

pinpoint its current location to within a few meters. A GPS device receive the data, 

then convert the longitude, latitude, and altitude (LLA) data into a location point. 

Position and navigation information is vital to a wide range of professional and 

recreational activities covering surveying, search and rescue, tracking, hiking, 

navigating, and so forth.