Specifications

118
2.10 GPS Positioning Function
This chapter describes about detailed specifications of the GPS.
2.10.1 Basic Specifications
The terminal supports the following functions that come with the integrated GPS module.
Table 2.82
Specification Remarks
Positioning
Method
Independent positioning Module unit receives radio waves and
performs positioning
Reception from 4 or more satellites:
3D positioning
Positioning
status
Reception from 3 satellites:
2D positioning
Positioning cannot be performed with 2 or
less satellites.
Output
Format
NMEA - 0183 This is the standardized output format of the
National Marine Electronics Association and
is the standard format used with GPS.
Geodetic
System
WGS84 WGS84 is a global geodetic system built and
maintained by the U.S government. This
global system is suited to operate in fields
requiring real-time capabilities such as the
military, navigation and nautical charting.
The GPS module power source and the relevant drivers can be automatically controlled including
turning on/off the power with the following terminal operations.
Table 2.83
Operation GPS Power Source
After reset startup. OFF
Open GPS device. ON
Turning off while GPS is open (suspend). OFF
Turning on while GPS is open (resume). ON
Enable Virtual Off mode while GPS is open. ON
Disable Virtual Off mode while GPS is open. ON
Close GPS device. OFF
Low battery during operation. T.B.D.
Low battery emergency off. OFF