Garmin Appliance Data Upgrade Addendum | Page 9

Garmin Discontinued Upgrade Addendum - Appliance Data.
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14. Magnetic Variation Options

Magneticvariationhasbeensimplifiedtothechoices

ofMagneticandTrue.

See the section on Units/Position of the Setup 1 Page in 

the Aux Pages chapter of the Pilot’s Guide for more details.

15. Terrain Database

TheTerrainfunctioninNavmodeisnowastandard

feature.Theextensivedatabaseaidsinterrainawareness.
TAWSremainsasanoptioninthe500Wseries.

See the section on Terrain Operation in the Nav Pages 

chapter of the Pilot’s Guide for more details. 

16. Dead Reckoning (DR)

Deadreckoningistheprocessofcontinuingnavi-

gationbasedonyourlastknownpositionusingyour
currentheading,speed,time,anddistancetobetraveled
afteralossofGPSnavigationonanactiveflightplan.
Navigationusingdeadreckoningisthereforeonlyan
estimateandrequiresthatyoumaintainthecourseand
speedshownonyour400W/500Wunit.Deadreckoning
shouldnotbeusedifanyothermeansofnavigationis
available,suchasaVORorpilotage.

DeadreckoningbecomesactiveafteralossofGPS

positionwhileyouarenavigatingusinganactiveflight
plan.Apop-upmessagewillappearandrequirespilot
inputtoclearthemessage.Deadreckoningisnotavail-
ableifyouareinterminalorapproachmodes.

WhenDeadReckoningisactive,theownshipicon

colorischangedtoyellowandtheTo/Fromflagis
removedfromtheCDI.TheDeadReckoningannun-
ciator(DR)appearsontheleftsideofthemapdisplay
whenGPSpositionisunavailableandtheunitisinDead
Reckoningmode.Allexternaloutputsdependenton
GPSpositionareflagged.

See the section on Dead Reckoning in the Nav Pages 

chapter of the Pilot’s Guide for more details. 

17. Satellite Status Page

TheSatelliteStatuspagehasbeenredesignedto

provideWAASGPSinformation.

Satellite Status Page Description

GPS Receiver 

Status

Sky View 

of satellite 

positions

Signal Strength 

Bars

Satellite 

Numbers

Horizontal Figure of 

Merit and Vertical 

Figure of Merit

Estimated Position 

Uncertainty

Acquiring 

Satellite, not 

ready for 

use

Excluded 

Satellite

Satellite acquired 

but not used for 

position fix

Satellite 

acquired, used 

for position 

fix, and has 

differential 
corrections 

“INTEG”  

Annunciator

shown when the required 

level of integrity is not 

available

 Current Page in NAV 

Group 

(page position  

depends on options;  

see 400W/500W Series 

Display Interfaces Pilot's 

Guide Addendum)

Current 

UTC Time

See the section on the Satellite Status Page in the Nav 

Pages chapter of the Pilot’s Guide for more details. 

18. Graphics Speed

Thegraphicsspeedforredrawingthedisplayismuch

improved.ThisisespeciallyevidentontheMapandTer-
raindisplays.

19. Crossfill

Crossfilloperationinthe400W/500Wseriesunitsis

now12xfasterthanintheClassicunits.Thedatabases
ofthe400/500seriesandthe400W/500Wseriesare
incompatible,soyoumaynotmixsystems.

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