Garmin GPS 95 STD Personal Navigator Owner's Manual

Contents

8-148.12 MAP DATUM SELECTIONSelect the desired map datumreference from the Map Datum Page.You may choose from 102 pre-definedmap datums, or you may define yourown. If the sectional/chart you areusing specifies a reference datum,select that datum on your GPS 95. Ifthe sectional/chart does not specify areference datum, you may select each datum applicable to your region untilyou find the datum that provides the best positioning at a known point. NOTE:The GPS 95 is shipped from the factory with the WGS 84 datum selected.To change the pre-defined datum...· Highlight the “Change?” field and press ENT.· With the arrow keys, find the desired datum and highlight it.· Press ENT. The new datum is selected.The user-defined datum option allowsyou to custom-tailor a datum referencefrom which all position coordinates arecalculated. All entries are defined asdifferences from the WGS 84 standarddatum. (CAUTION: Selection anduse of the user datum function is forindividuals experienced in the use ofmap datums. If the pre-defined mapdatums do not correspond to the chart you are using and you are unsure ofthe correct entries required to correspond to that chart, contact the chartmanufacturer. Incorrect entries for a user-defined datum may result insubstantial position errors.)To define a user datum...· Place the cursor over the cyclic field on line one.· Press CLR to select “User-defined”.· Enter the 5 parameters of the user map datum. The sign of theparameters should follow the convention: WGS 84 - local geodeticsystem.