Garmin GPS 12 Owner's Manual & Reference

Also see for GPS 12 MAP: Declaration of conformity Supplementary guide Owner's manual Specifications Quick guide

Garmin GPS 12 Owner's Manual & Reference Manual pdf 17 page image

Receiver StatusReceiver status is indicated at the top left of thepage, with the current horizontal accuracy (estimatedposition error, in feet or meters) at the top right. Thestatus will be shown as one of the following conditions:Searching— the GPS 12 is looking for any avail-able satellites in view.AutoLocate— the GPS 12is initializing and col-lecting new almanac data. This process can take 5minutes, depending on the satellites currently inview.Acquiring— the receiver is collecting data fromavailable satellites, but has not collected enoughdata to calculate a 2D fix.2D Nav (2D Navigation)— at least three satel-lites with good geometry have been locked onto anda 2-dimensional position fix (latitude and longitude)is being calculated. ‘2D Diff’ will appear when youare receiving DGPS corrections in 2D mode.3D Nav (3D Navigation)— at least four satelliteswith good geometry have been locked onto, andyour position is now being calculated in latitude,longitude and altitude. ‘3D Diff’ will appear when youare receiving DGPS corrections in 3D mode.Poor Cvg (Poor GPS Coverage)— the receiverisn’t tracking enough satellites for a 2D or 3D fixdue to bad satellite geometr y.Not Usable— the receiver is unusable, possiblydue to incorrect initialization or abnormal satelliteconditions. Turn the unit off and back on to reset,and reinitialize the receiver if necessar y.Simulator— the receiver is in simulator mode.EZinit Option PromptThe Satellite Page also provides access to the EZinitprompt whenever a position fix has not been calculated.(The unit must be in searching, AutoLocate, acquiring,simulator, or poor coverage mode.) This allows you toreinitialize the unit (see Appendix A), and is useful ifyou have traveled over 500 miles with the receiver offand must initialize your new position. (The EZinitprompt will automatically appear if the receiver needsto be initialized. The prompt may also appear duringnormal use if the antenna is shaded or the unit is oper-ated indoors.) 13The signal strength bars atthe bottom of the page willnot appear until the GPS12 has found the satellitesindicated at the bottom ofthe screen.REFERENCEReceiver Status& EZinitIf you travel more than500 miles with the receiv-er off, reinitialize the unitto your new position byusing the EZinit feature.To access EZinit, pressENTER from the SatellitePage before any satellitesare acquired.