Garmin GPS II Owner's Manual

Also see for GPS II+: Declaration of conformity Owner's manual Quick reference guide Owner's manual & reference Specifications

Contents

Garmin GPS II Owner's Manual Manual pdf 9 page image

3What is GPS?GPS is a system of 24 satellites which circle the earth twice a day in a very pre-cise orbit and transmit information to earth. The GPS II must continuously “see” atleast three of these satellites to calculate your position and track your movement.By using an almanac (a timetable of satellite numbers and their orbits) stored inthe receiver’s memory, the GPS II can determine the distance and position of anyGPS satellite and use this information to compute your position.Your GPS receiver can only see satellites above the horizon, so it needs to knowwhat satellites to look for at any given time. To use this almanac data, your GPSneeds to either be told its general location or given the opportunity to find itself, or“initialize.” Once you initialize the unit to a position, it will usually compute a fixwithin a few minutes.Initialization is only necessary under the following conditions:• The first time you use your GPS II (from the factory).• After the GPS II has been moved over 500 miles from the last time youused it (with the power off).• If the GPS II’s memory has been cleared and all stored data has been lost.READ ME FIRST!