Garmin GPS 12CX Owner's Manual

Also see for GPS 12CX: Specifications

Garmin GPS 12CX Owner's Manual Manual pdf 48 page image

40REFERENCEMain Menu—Navigation SetupSubmenuMap Datums (cont)To define a user datum:1. Highlight the ‘MAP DATUM’ field, and pressENTER.2. Scroll through the map datum options until ‘User’appears, and pressENTER.3. Enter the five parameters of the map datum—‘DX’,‘DY’, ‘DZ’, ‘DA’, and ‘DF’—using the rocker keypad,and pressENTER. The signs of each value shouldfollow the convention: WGS 84 +/- local geodeticsystem.4. Highlight ‘SAVE?’, and pressENTER.CDI ScaleThe course deviation indicator (CDI) field lets youselect the range of the CDI bar scale on the HighwayPage. Four scales are available: +/- 0.02, 0.25 (default),1.25, and 5.0 miles or kilometers. Note: This CDI valuerepresents the full scale limits (left or right from center)of the CDI.To enter a CDI scale setting:1. Highlight the ‘CDI’ field, and pressENTER.2. Select the desired setting, and pressENTER.Units of MeasureThe GPS 12 CX lets you select statute (default), nau-tical, or metric units of measure for all speed and distancereadouts.To change the unit of measure:1. Highlight the ‘UNITS’ field, and pressENTER.2. Select the desired units of measure, and pressENTER.Heading ReferenceThe GPS 12CX’s heading information can be displayedreferencing magnetic north (automatic or user-defined),true north, or calculated grid headings. The default set-ting is automatically-calculated magnetic north, which issuitable for most applications.To select a heading reference:1. Highlight the ‘HEADING’ field, and pressENTER.2. Select the desired heading reference, and pressENTER.To enter a user-defined magnetic heading:1. Select ‘User Mag’ and pressENTER.2. Enter the degrees and direction of magnetic variation,and pressENTER.Units of MeasurementSettingsHeading SettingsCDI Scale Settings