NorthStar 6000i, Быстрый старт и справочное руководство

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Reference section 10 — Setup
Changing your navigation settings
Northstar 6000i
The manual setting (1º to 180º) is avail-
able when the display must match an
older or less accurate chart, or in remote
areas (such as above 70º north latitude)
where the variation calculations can be
signi
fi cantly off.
Switching waypoints manually or
automatically
You can set waypoint switching to:
•
automatic — the 6000i automatically
switches to the next waypoint upon
arrival at each waypoint
•
manual — you manually switch to the
next waypoint
When set to automatic, the 6000i displays
the new distance and bearing information
for the next waypoint when you arrive at
the previous one. It immediately stops
navigating when you pass a lone waypoint
or the last waypoint in a route.
NOTE:
For instructions on changing the way-
point arrival distance, see Arrive radius,
on page 143.
You may want to switch waypoints
manually if you’re maneuvering around a
waypoint in search of a lobster trap, or
trying to find a buoy in a thick fog. Manual
switching lets you keep a continuous
display of distance and bearing informa-
tion for the current waypoint. With manual
switching, you must manually change to
the next waypoint every time you arrive at
the current waypoint:
1. Press STEER and then
Nav log.
2. Select the next leg or waypoint if neces-
sary.
3. Press
Restart
and then ENTER .
Choosing a geodetic datum
A variety of lat/lon coordinate models is
used by cartographers to produce the
world’s navigation charts. Each model is
called a datum. The
6000i’s geodetic datum
option contains all referenced datums,
according to Defense Mapping Agency
publications.
You should always be sure that the current
datum matches your Nav-Chart cartridge.
All Navionics charts for the last few years
use the WGS84 datum. A few old charts
from South America and other areas use
other datums. If you choose a datum other
than WGS84, an offset will be applied, but
only to the GPS lat/lon of your vessel’s
position. The vessel will be moved on the
chart, but not waypoints, routes, or track
points.
To change the datum reference: