User manual

MapAsia.com Limited MapKing 2007 (S60 Version)
Page 25
5 System Setting
5.1 GPS Settings
GPS (Global Positioning System) is developed and
maintained by the US Defence Department. The system was
initially deployed for military use but was later open for
civilian navigation
. The system comprises of more than 24
satellites on different orbits. The GPS receiver on the ground
picks up signals from at least three satellites and calculates
its real time position by a set of mathematical formulas
generally known as ‘triangulation’.
GPS receivers must maintain line-of-
sight with the satellites.
GPS will not work indoor and its accuracy tends to degrade
significantly when the receiver is located under sheltered
area or near high-rise building structure or terrain.
GPS Fixed: Turn on or off GPS.
GPS Detection: Choose GPS detection sensitive or stable.
《
5-1a
》
In Main Menu, press
‘Options’ > ‘GPS Settings’.
5.2 System Settings
Display Style: Switch map display style.
Day / Night Mode: Switch day or night mode.
Map North Up: Choose head north up or north up.
Map Auto Scale:
Choose auto scale or manual scale.
Interchange Info: Choose on or off interchange info.
Voice Settings: Switch voice assistance.
Disclaimers: Choose on or off disclaimers.
《
5-2a
》
In Main Menu, press
‘Options’ > ‘System Settings’.