Understanding Alarms - NorthStar 958 Operator's Manual

Chapter 11 - Alarms, TideTrack, and Video Display

Understanding alarms

Understanding
alarm icons
Page 144
Alarms automatically alert you to certain situations, for
example, when you're approaching a waypoint, or entering an
avoidance area, or when you've lost position fixes. The 958
displays its alarms in two different ways:
•
as specific alarm icons on the display screens
•
as alarm messages (with details about the alarm icon) on
the ALARMS screen
Also, whenever an alarm icon appears on any screen, an
audible alarm will sound if you've turned on the alarm audio.
Each alarm has a distinctive beep that's based on Morse code.
If you're choosing whether to keep the alarm audio on or off,
remember that the audio beep may be a necessity when you're
unable to look at the display screen.
There are 18 possible alarm icons, depending on the particular
alarm condition. For a detailed explanation of these alarm
icons, see Table 6 on page 146.
Three of these icons—bottom, fish, and temp—will only appear
if you're using the echo sounder (fishfinder); for details, see
the Northstar 490 Operations Manual (GM490).
Two of these icons—radar guard and no radar data—will only
appear if you're using radar.
Figure 8: Alarm icons
958 Operator's Manual, Rev. A