NorthStar 972, Быстрый старт и справочное руководство

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Reference section 11 — Setup
Navigation options Northstar 972
12- or 24-hour clock
Time of day can be displayed in either a
12- or 24-hour format. This option affects
all of the time-related displays, including
high and low tides, sunrise/sunset, and
ETA.
Coordinates
You can display position coordinates as
lat/lon or as Phantom Loran TDs. (See
Using Phantom Loran, starting on page 49.)
Lat/lon precision
Latitude and longitude can be displayed as
either degrees, minutes, and seconds (XX°
XX’ XX”), or as degrees, minutes, and thou-
sandths of minutes (XX° XX.XXX’).
Distance and speed units
Distances and speeds can be displayed in
any of the following units of measurement:
•
nautical miles, feet, and knots
•
kilometers, meters, and kilometers per
hour
•
statute miles, feet, and miles per hour
The maximum number of saved
waypoints
When you save a waypoint by pressing the
SAVE
key, the 972 automatically assigns a
sequential waypoint number (such as
–S001–) to each point stored. When this
number passes the number you set in the
Max saved waypt
option (the factory default
setting is 199 saved waypoints), it restarts
at the number 1, and overwrites the old
saved waypoint previously designated
number 1. For many applications, you may
want to set this maximum number to a
small value, such as five or ten, as long as
you promptly rename any saved waypoints
you want to save permanently—before
they’re overwritten.
You can enter a number up to 199 for the
maximum number of saved waypoints. For
one- or two-digit values, enter zero as the
first digit(s).
When being saved to a route, waypoints are
automatically assigned four-digit numbers;
these waypoints can be overwritten only
during a database IMPORT operation.
Choosing magnetic variation
A compass naturally points to the magnetic
north pole, several hundred miles from the
Earth’s
geographic north pole. The differ-