Garmin GPS 12XL Owner's Manual (Software Version 2.00-3.62) - Page 47

Navigation Setup The navigation setup submenu page is used to select units of measurement for position formats, map datums, CDI scale, units, and heading information. Position Formats The default position format for the GPS 12XL is latitude and longitude in degrees and minutes (hdddºmm.mmm'). You may also select degrees, minutes and seconds (hdddºmm'ss.s''); degrees only (hddd.dddddº); UTM/UPS coordinates; or British, German, Irish, Maidenhead, Swedish, Swiss, or Taiwan, or User grid formats. To select a position format: 1. Highlight the 'POSITION FRMT' field, and press E. Select the desired setting, and press E. User Grid Position Format The user grid option lets you create a user defined position format by establishing factors such as longitude of origin, scale, and false Easting or Northing. To define a user grid: 1. Select 'User Grid', and press E. Enter values for longitude origin, scale, and false Easting and Northing, and press E. Highlight 'SAVE?', and press E. Map Datums The 'MAP DATUM' field comes with a WGS 84 default setting. Although 106 total map datums are available for use (see Appendix D for map datums), you should only change the datum if you are using maps or charts that specify a different datum than WGS 84. To select a map datum: 1. Highlight the 'MAP DATUM' field, and press E. 2. Select the desired setting, and press E. REFERENCE Navigation Setup The position format may be set to display your choice of many formats. Note: degree and minutes is the default setting. The default map datum covers world-wide navigation. However, if you are using a paper map or chart which uses a different map datum that WGS 84, then you may wish to switch to that datum. 43