Astro and DC 40 Owner’s Manual iiiTable of ContentsIntroduction............................1Setting Up the Device ...................1Registering Your Device ...............1Contacting Garmin ProductSupport ......................................1Device Overviews .........................2Manual Conventions .....................4Tracking Your Dog .................6Communication with the DC 40 ....6Navigating to Your Dog .................6Editing Dog Information ................7Tracking Your Dog on the Map .....8Adding Dogs .................................9Collar Lock..................................10Astro and DC 40 Tips ................. 11Locations..............................13Marking a Location .....................13Navigating to a MarkedLocation ...................................14Editing a Marked Location ..........14Averaging Your Location.............15Projecting a Location ..................15Map .......................................16Scaling the Map ..........................16Customizing the Map ..................16Measuring Distance ....................17Find Features .......................18Finding Locations .......................18Using Optional Detailed Maps ....20Stopping Navigation ...................20GPS Applications ................21Trip Computer .............................21Compass ....................................21Altimeter .....................................24Tracks .........................................26Routes ........................................29Highway ......................................32Proximity Alarms .........................32Turn Preview ..............................33Active Route ...............................33Satellite .......................................34