NorthStar 972, Быстрый старт и справочное руководство

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Reference section 9 — Alarms and TideTrack
TideTrack™ Reference Manual Revision B
Cross-track alarm
The cross-track alarm will signal if your
vessel moves beyond a certain distance
from the desired track line. The default
setting is 0.10 nautical miles (about 600
feet). You can set the cross track to as little
as 0.01 nm (about 60 feet).
To set the cross-track alarm:
1. On the alarm screen, press the cursor pad to
highlight
Cross track alarm
, then press
Edit
alarm
.
2. Press the cursor pad to turn the alarm to
On
.
3. To set the cross-track distance limit, press the
cursor pad right, and use the keypad to enter
the distance, then press
ENTER .
Arrive radius
The arrive radius defines a circle around
your current active waypoint. The default
setting for the radius is 0.20 nautical miles,
or about 1200 feet. You can set the radius
to as little as 0.01 nm (approximately 60
feet).
Either of two alarms may be triggered
when the vessel enters the arrive radius:
•
If you’re following a route and have
chosen automatic waypoint switching,
the 972 displays the
CHANGING
alarm
icon and switches to the next leg.
Automatic waypoint switching will also
occur if you cross the perpendicular at the
end of the current leg.
•
If there are no more waypoints in the
route, or if you’ve chosen manual
waypoint switching, the ARRIVE alarm
is triggered.
To set the arrive radius:
1. On the alarm screen, press the cursor pad to
highlight
Arrive radius
, then press
Edit
alarm
.
2. To set the distance around waypoints, use the
keypad to enter the distance, then press
ENTER .
TideTrack
™
The 972 calculates tide information for any
of over 3,540 NOS/NOAA tide stations. To
display this information, press the
STAR
key until you see the
Tide Track
screen.