Garmin GPSMAP 162 User Manual download pdf (Page 74)

Reference

Main Menu:

Units Tab

• Heading— lets you select the reference used in calculating heading information. You can select

from ‘Auto Mag Var’, ‘True’, ‘Grid’ and ‘User Mag Var’. ‘Auto Mag Var’ provides magnetic

north heading references which are automatically determined from your current position. ‘True’

provides headings based upon a true north reference. ‘Grid’ provides headings based on a grid

north reference (and is used in conjunction with the grid position formats described on page

64). ‘User Mag Var’ allows you to specify the magnetic variation at your current position and

provides magnetic north heading references based upon the variation you enter.

To enter a user deﬁ ned magnetic variation:

1. With the “Heading” ﬁ eld set to ‘User Mag Var’, highlight the heading reference ﬁ eld (immediately

to the right) and press ENTER/MARK.

2. Use the ARROW KEYPAD to enter the magnetic variation at your current position and press

ENTER/MARK.

WARNING: If ‘User Mag Var’ is selected, you must periodically update the magnetic

variation as your position changes. Using this setting, the unit will not automatically

calculate and update the magnetic variation at your present position. Failure to update

this setting may result in substantial differences between the information displayed on

your unit and external references, such as a magnetic compass.

• Distance, Speed and Elevation— lets you select the desired units of measure for distance,

speed and elevation readouts in ‘Nautical’ (nm, kt, ft), ‘Statute’ (mi, mh, ft) or ‘Metric’ (km,

kh, mt) terms.

• Depth— lets you select the desired units of measure for depth in Feet (ft), Fathoms (fa) or

Meters (mt).

• Temperature— lets you select the desired units of measure for temperature in Fahrenheit (°F)

or Celsius (°C).

You may manually enter a magnetic

variation.

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Garmin GPSMAP 162 User Manual Page 74