Understanding Alarms - NorthStar 957 Operator's Manual

Chapter 10 - Using Special Functions

Understanding alarms

Understanding
alarm icons
Page 118
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 957
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 120.
Three of these icons—bottom, fish, and temp—will only appear
if you're using the Northstar Fishfinder; for details, see the
Northstar Fishfinder Operations Manual (GM490).
To display the alarm message associated with the icon, press
the STAR key to display the ALARMS screen.
Figure 5: Alarm icons
957 Operator's Manual, Rev. B