NX501/NZ501English84
5Glossary
2D/3DGPSreception
TheGPSreceiverusessatellitesignalstocalculateits(your)positionandneedsatleastfour signalsto
give a three-dimensional position, including elevation. Because the satellites are moving and bec ause
objects can block the signals, your GPS device might not receive four signals. If three satellites are
available,the receivercancalculatethe horizontalGPSpositionbuttheaccuracyislowerandtheGPS
devicedoesnotgiveyouelevationdata:only2Dreceptionispossible.
Activeroute
Thecurrentlynavigatedroute.Wheneverthedestinationisset,therouteisactiveuntilyoudeleteit,reach
yourdestinationoryouquitClarionMobileMap.Seealso:Route.
CityCenter
Thecitycenterisnotthegeometriccenterofthecitybutanarbitrarypointthemapcreatorshavechosen.
Intownsandvillages,itisusuallythemostimportantintersection;inlargercities,itisoneoftheimportant
intersections.
Colortheme
Clarion Mobile Map comes with different color themes for daytime or night use of the m ap and menu
screens. Themes are custom graphic settings and they can have different c olors for streets, blocks or
surfacewatersin2Dand3Dmodes,andtheydisplayshadesorshadowsindifferentwaysin3Dmode.
Onedaytimeschemeandone nightschemeisalwaysselectedforthe map andforthemenus.Clarion
MobileMapusesthemwhenitswitchesfromdaytonightandback.
GPSaccuracy
Severalfactors have impacton the d eviationbetweenyourrealpositionand theone given bythe GPS
device. For example, s i gnal delay in the ionosphere or r eflecting objects near the G PS device have a
differentandvaryingimpactonhowaccuratelytheGPSdevicecancalculateyourposition.
Map
ClarionMobileMapworkswithdigitalmapswhicharenotsimplythecomputerizedversionsoftraditional
papermaps.Similarlytothepaperroadmaps,the2Dmodeofdigitalmapsshowyoustreets,roads,and
elevationisalsoshownbycolors.
In3Dmode,youcanseethealtitudedifferences,forexamplevalleysandmountains,elevatedroads,and
inselectedcities3Dlandmarksand3Dbuildingsarealsodisplayed.