Navigation Setup; To Enter A User Magnetic Variation; Setup Menus - Garmin GPSMAP 235 Sounder Owner's Manual

Navigation Setup

The navigation setup submenu is used to select a variety of navigation informa-
tion including: position format, units of measure, and heading references. This
submenu 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 display
position. The following formats are available:
• hddd.dddddº (degrees)
• hdddºmm'ss.s" (deg/min/sec)
• German grid
• Maidenhead
• Swiss grid
• UTM/UPS grid
• Navigation Units: Selects the format for speed and distance measurements. You
may 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 chart
cartridges and the sounder display. Depth contours and sounder depth units can be
displayed in feet, meters or fathoms. (The default setting is feet.)
• Temp Units: Lets you select between Celsius and Fahrenheit.
• Heading: Lets you select what reference is used in calculating heading information.
You can select to reference automatic magnetic variation, true north, grid heading
or user magnetic variation. (The default setting is automatic.)

To enter a user magnetic variation:

1. Highlight the 'Heading' field and press
T
press .
T
2. Press to access the variation field, and use the
desired variation. Press
• hdddºmm.mmm' (degrees and minutes)
• British grid
• Irish grid
• Swedish grid
• Taiwan grid
• LORAN TDs
T
. Select the 'User Mag Var' option and
R
keypad to enter the
T
to confirm.
GETTING START-

SETUP MENUS

ED
Navigation Setup
Using the GOTO
Key
A B
A. The sounder will also display position coordinates
in eight grid formats.
B. To enter a user magnetic variation, select the
'User Mag Var' option and enter a direction and
value in the variation field.
SECTION
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