Introduction to GPSIntroduction to GPS

Using the Garmin eTrex LegendUsing the Garmin eTrex Legend

GPS SatellitesGPS Satellites• Distance from EarthDistance from Earth

– ½x Earth’s ½x Earth’s CircumferenceCircumference

– 12,000 Miles12,000 Miles• 2 Orbits in 24 Hours2 Orbits in 24 Hours

– Travel 7,000 Travel 7,000 Miles/HourMiles/Hour

• Powered by Solar EnergyPowered by Solar Energy

Satellite RotationSatellite Rotation

Signal TransmissionSignal Transmission

Garmin’s eTrex LegendGarmin’s eTrex Legend

Zoom In/Out

Buttons

Find Button

Click Stick

Page Button

On/Off Button

Page ButtonPage Button• Press the Page Button several times. Press the Page Button several times.

You will see the display cycle through You will see the display cycle through the main pages that look like thisthe main pages that look like this

Satellite Page Map Page Navigation Page Trip Computer Main Menu

At any time you can press the Page Button and return to one of the Main Pages

NORTH

WEST

Main Page Menu

ButtonOptions Menu

ButtonTitle Bar

Satellite PageSatellite Page

•The bottom of the Satellite Page also shows your GPS location and elevation (After you have 4 bars)

-The N or S line shows Latitude

-The E or W line shows Longitude

Setup FeaturesSetup Features

• TimeTime– Time ZonesTime Zones– Time FormatTime Format

• UnitsUnits– Position Format Position Format

(Coordinate System)(Coordinate System)– Misc. Unit FormattingMisc. Unit Formatting

• DisplayDisplay– Contrast & BacklightingContrast & Backlighting

• SystemSystem– WAAS EnablingWAAS Enabling– LanguageLanguage– Memory UsageMemory Usage

Area CalculationArea Calculation1.1. Main MenuMain Menu2.2. AccessoriesAccessories3.3. Area CalculationArea Calculation4.4. Select “Start” and Select “Start” and

Walk Area PerimeterWalk Area Perimeter5.5. Select “Stop” After Select “Stop” After

Walking Area Walking Area PerimeterPerimeter

• Resetting Area Resetting Area CalculationCalculation– Options Menu Options Menu

ButtonButton– ResetReset

• Use Click Stick to Use Click Stick to Change Area Change Area Calculation MeasuresCalculation Measures– AcresAcres– FeetFeet– MilesMiles– Etc.Etc.

Marking a Marking a LocationLocation

1.1. Main MenuMain Menu2.2. Mark IconMark Icon3.3. Change SymbolChange Symbol

a.a. Select with Click StickSelect with Click Stickb.b. Find Desired SymbolFind Desired Symbol

4.4. Name LocationName Locationa.a. Select with Click StickSelect with Click Stickb.b. Use Drop-Down Alphabet MenuUse Drop-Down Alphabet Menuc.c. Click OKClick OK

5.5. Change LocationChange Locationa.a. Select with Click StickSelect with Click Stickb.b. Use Drop-Down Number MenuUse Drop-Down Number Menuc.c. Click OKClick OK

6.6. Select Desired OptionSelect Desired Optiona.a. OK – Save OK – Save b.b. GoTo – Navigate GoTo – Navigate c.c. Map – Maps LocationMap – Maps Location

Finding a WaypointFinding a Waypoint

1.1. Main MenuMain Menu2.2. FindFind3.3. WaypointsWaypoints

OROR

1.1. Find ButtonFind Button2.2. WaypointsWaypoints

GPS UsesGPS Uses

Wildlife MappingEnvironmental Education

Earth Science

GPS UsesGPS Uses

Tree & Plant IdentificationScience & Technology

ATV Safety

GPS UsesGPS Uses

High AdventureFishing & Canoeing

Science & Technology

GPS UsesGPS Uses

Trip PlanningRecreationSearch & Rescue

GPS UsesGPS Uses

AgricultureShooting Sports & Education

Citizenship & Community Service

and many more!!!

GeoCachingGeoCaching• Scavenger HuntScavenger Hunt• Zip CodeZip Code• AdventureAdventure• EducationalEducational• RecreationRecreation• Families and Families and

FriendsFriends• Exciting and Fun!Exciting and Fun!

www.geocaching.com

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