Page 154
958 Operator’s Manual, Rev. A
Chapter 11 - Alarms, TideTrack, and Video Display
to subtract a safety factor to allow for GPS or loran inaccu-
racy, then press the
ENTER
key.
Cross-track alarm
The cross-track alarm will signal if your vessel moves beyond a
certain distance from the desired track line. You can turn the
cross-track alarm on or off, and set the distance from the 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. Press the
CURSOR PAD
to highlight
CROSS TRACK
, then
press the
EDIT ALARM
menu key.
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 the
ENTER
key.
Arrive radius
The arrive radius is 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.
There are two alarms triggered by the arrive radius. If you’re
following a route and have chosen automatic waypoint
switching, entering the radius makes the 958 switch to the
next leg and display the
CHANGING
alarm icon. If there are no
more waypoints in the route, or if you’ve chosen manual
waypoint switching, then entering the radius triggers the
arrive alarm.
Note: Automatic waypoint switching will also occur if you
cross the perpendicular at the end of the current leg.
Summary of Contents for 958
Page 1: ...NORTHSTAR 958 Integrated Navigation System Operator s Manual P N GM958UM Revision A ...
Page 2: ......
Page 8: ...Page iv 958 Operator s Manual Rev A ...
Page 26: ...Page 18 958 Operator s Manual Rev A Chapter 1 Getting Started ...
Page 128: ...Page 120 958 Operator s Manual Rev A Chapter 8 Understanding Waypoint Route Navigation ...
Page 150: ...Page 142 958 Operator s Manual Rev A Chapter 10 Understanding Radar Functions ...
Page 198: ...Page 190 958 Operator s Manual Rev A ...
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