A BNavigation SetupThe navigation setup submenu is used to select a variety of navigation informa-tion including: position format, units of measure, and heading preferences. Thissubmenu is also used to select map datums, set the CDI scale and adjust the built-in velocity filter. The following options are available:• Position Format lets you select the coordinate system used to displayposition. The following formats are available:• hddd.dddddº (degrees) • hdddºmm.mmm’ (degrees and minutes)• hdddºmm’ss.s” (deg/min/sec) • British grid• German grid • Irish grid• Maidenhead • Swedish grid• Swiss grid • Taiwan grid• UTM/UPS grid• Navigation Units selects the format for speed and distance measurements. Youmay select from nautical, statute or metric formats. (The default setting is nautical.)• Depth Units selects the format for depth contour display on G-chart offshore chartcartridges. Depth contours can be displayed in feet, meters or fathoms. (The defaultsetting is feet.)• Heading lets you select what reference is used in calculating heading information.You can select to reference automatic magnetic variation, true north, grid headingor user magnetic variation. (The default setting is automatic.)To enter a user magnetic variation:1. Highlight the ‘Heading’ field and press T. Select the ‘User Mag Var’option and press T.2. Press T to access the variation field, and use the R keypad toenter the desired variation. Press T to confirm.• CDI Scale provides a list of six CDI scale settings for the map page CDI: +/-0.10,0.50, 1.0 (default). 5.0, 10.0 and 25.0 miles or kilometers. The scale represents thedistance from the center of the scale to either end of the scale.60A. The GPSMAP 130 will also display position coor-dinates in eight grid formats.B. To enter a user magnetic variation, select the‘User Mag Var’ option and enter a direction andvalue in the variation field.SECTION9 SETUP MENUSNavigation Setup