Garmin GPSMAP 195 - Manual (Page 71)

REFERENCE
The ‘User Mag Var’
option allows you to define
the magnetic variation for
your area. ‘Auto Mag Var’
is the preferred setting in
most cases.
Select nautical, statute or
metric units of measure
from the Unit/CDI sub-
menu.
69
UNITS/CDI SETTINGS
The units/CDI submenu is used to select the desired units of mea-
sure, heading reference and CDI (course deviation indicator) scale.
The heading selection determines what reference is used in
calculating heading information. You can select from the following:
• 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.
• User Mag Var— lets you specify the magnetic variation at your
current position and provides magnetic north heading references
based upon the variation you enter.
WARNING: The ‘User Mag Var’ setting is provided for circumstances where
‘Auto Mag Var’ may not provide the correct magnetic variation. Be advised
that if you select ‘User Mag Var’ and enter a value, this value does not change
as your position changes. If the magnetic variation changes as your flight
progresses, you must go back and periodically update this figure.
• Grid— provides headings based on a grid north reference. This
selection is used in conjunction with the grid position formats
described on page 71.
To change the heading reference:
1. Highlight the ‘Heading’ field and press
T
.
2. Select the desired heading reference and press
T
.
The desired units of measure for distance, speed, altitude, vertical
speed, pressure and temperature are also selected from the units/CDI
submenu. The following options are available for each units of
measure selection:
• Distance & Speed Units— may be presented in nautical
(nautical miles and knots), statute (statute miles and miles per
hour) or metric (kilometers and kilometers per hour) terms.
!
Main Menu: Setup
gps 195 manual C 7/1/99 4:49 PM Page 69