2 - NAV PAGES46 190-00356-00 Rev BTo update the terrain or obstacle database:1. Acqure a new terran data card fromGarmn.2. Turn off the power to the 400W Seres unt.3. Remove the old terran data card from andnsert the new card nto the rght-most slot ofthe 400W Seres unt.4. Turn on the 400W Seres unt and verfy that theTERRAIN system passes the self-test. The “TERTEST” annuncator wll clear after checkng andno falure message appears.Terrain/Obstacle Database Areas of CoverageThe following describes the area of coverage avail-able in each database. Regional definitions may changewithout notice.Database Coverage AreaWorldwde (WW) Lattudes: N 75° to S 60°Longtudes: W 180° to E 180°Unted States (US)Lmted to the Unted States plussome areas of Canada, Mexco,Carbbean, and the Pacfic.US/EuropeAlaska, Austra, Belgum, Canada*,Carbbean*, Czech Republc,Denmark, Estona, Fnland, France,Germany, Greece, Hawa, Iceland,Ireland, Italy, Latva, Lthuana,Mexco*, Netherlands, Norway,Poland, Portugal, Slovaka, Span,Sweden, Swtzerland, UntedKngdom, Unted States* Indcates partal coverageCAUTION: Obstacles 200 feet and higher are in-cluded in the Obstacle Database. It is very impor-tant to note that not all obstacles are necessarilycharted and therefore may not be contained inthe Obstacle Database.Navigation DatabaseIt is therefore important to also have the latestNavigation Database installed to ensure correct Terrainalerting.TERRAIN AlertsTERRAIN alerts are issued when flight conditionsmeet parameters that are set within the TERRAIN systemsoftware algorithms. When an alert is issued, visualannunciations are displayed. Annunciations appear in adedicated field in the lower left corner of the display.TERRAIN Annunciation and Pop-UpAlertTERRAIN Annunciation Field TERRAIN Pop-Up AlertPop-up AlertsOn any page except the TERRAIN Page, when a terrainor obstacle alert is issued, a pop-up window is displayedwith the appropriate alert.To acknowledge the pop-up alert and return tothe currently viewed page:Press the CLR key.To acknowledge the pop-up alert and quicklydisplay the TERRAIN Page:Press the ENT key.Terrain Operation