110MapSource CD-ROM data (which may be provided with your unit, depend-ing on the model) can be transferred to the NavTalk Unit to dramaticallyincrease the mapping capability of the unit in both the amount of map detailand available maps. MetroGuide® maps contain detailed information and arerequired for using the Find Menu, Points of Interest, Addresses and Junctionsoptions. MapSource maps can also provide U.S. Geological Survey topographicaldata, local streets and roads, nautical navigation aids, political boundaries andall major traffic routes for specified geographical areas.The unit can display a maximum of 525 MapSource maps depending on thesize of each map to fit within the 16 MB map data capacity of the NavTalk.You cannot view multiple types of MapSource data in the same location atthe same time (one will draw over the other). When you leave a MetroGuidearea for example and enter the area of a topographic map, the display willchange to contour lines. The same is true when moving from a topo map toa MetroGuide map.The City Navigator maps are at the top of the hierarchy and will replaceany other map information. Here is the list of the hierarchy for your referencebeginning with those titles that take precedence:1. City Navigator 2. City Select 3. MetroGuide 4. Fishing Hot Spots 5. U.S.Waterways & Lights 6. U. S. Topo 7. Roads and Recreation 8. WorldMapYou can place a check in the boxes on the MapSource Info Page to selectwhich maps will display. Removing the check prevents it from drawing over amap you want to view. Refer to page 58 for details.Your NavTalk unit is shipped with an installed Euro basemap and aMapSource “City Select- Europe” CD-ROM with a full unlock code certificate.Follow instructions provided with the CD-ROM and Unlock Certificate. Installa-tion of mapping data requires the use of the PC Interface Cable set.Appendix GSection 6MapSource™ Data InformationMapSource PC system requirements are: Pentium® processor,Windows 95® , Windows 98®, or Windows NT ®, Windows2000® , 16 MB minimum RAM, 300 MB free hard disk space (forcompact installation), CD-ROM drive, 256-color display adapterand monitor, mouse or other pointing device, PC Interface cable.Check the GARMIN website (www.garmin.com) or ask yourGARMIN dealer for MapSource product descriptions.MapSource Info Page details those maps downloaded to the NavTalkCheck the box adjacent to the map description to Activate