Garmin GPS 92 Owner's Manual & Reference

Also see for GPS 92: Declaration of conformity Specifications

Contents

The Global Positioning System (GPS) is a constella-tion of 24 satellites which circle the earth twice a day ina very precise orbit and transmit information back toEarth. This information includes operational status andorbital location of each satellite in the system. The GPS92 must continuously “see” at least three of these satel-lites to calculate your position and track your movement.At times, additional satellites may be needed to determinea position.By using an almanac (a timetable of satellite numbersand their orbits) stored in the receiver’s memory, the GPS92 can determine the distance and position of any GPSsatellite and use this information to compute your posi-tion.Your GPS receiver can only see satellites above thehorizon, so it needs to know what satellites to look for atany given time. To use this almanac data, your GPS 92needs to either be told its general location (be “initial-ized”) or given the opportunity to find itself. Once youinitialize the unit to a position, it will typically compute afix within a few minutes.Initialization is only necessary under the followingconditions:• The first time you use your receiver (new fromthe factory).• After the receiver has been moved over 500miles (with the power off) from the last timeyou used it.• If the receiver’s memory has been cleared andall internally stored data has been lost.Because the GPS 92 relies on satellite signals toprovide you with navigation guidance, the receiver needsto have an unobstructed, clear view of the sky for bestperformance. In a nutshell, the GPS receiver’s view of thesky will generally determine how fast you get a positionfix—or if you get a fix at all. GPS signals are relativelyweak and do not travel through rocks, buildings,hangars, or heavy tree cover, so remember to keep a clearview of the sky at all times for best performance.Hold the receiver at armslength and rotate theantenna perpendicular tothe ground.Welcome PageWhat isGPS?GettingStarted6