Humminbird Matrix Series Sonar Fishfinder Model Matrix 87 - Manual (Page 35)

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Temp Alarm
Temp Alarm sounds when the water temperature detected by the
Matrix™ 87c reaches the Temp Alarm setting, which is either set in degrees Fahrenheit or Celsius
[International Models Only]. For example, if the Temp Alarm is set to 58 degrees Fahrenheit, and
the water temperature falls from 60 degrees to 58 degrees, the Temp Alarm will sound. Similarly,
if the water temperature rises from 56 degrees to 58 degrees, the Temp Alarm will also sound.
To change the Temp Alarm setting:
1. Highlight Temp Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-Way Cursor Control keys to change the Temp Alarm setting.
(Off, 32-120 [Fahrenheit], 0-50 [Celsius [International Models Only]], Default = Off)
Off Course Alarm
Off Course Alarm sounds when the boat has moved too far off
course based on the menu setting when navigating. Off Course Alarm allows you to set how far
the boat is allowed to move off course before the Off Course Alarm will sound.
To change the Off Course Alarm setting:
1. Highlight Off Course Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Off Course Alarm setting. (Off,
30 to 3000 feet, 10 to 1000 meters [International Models Only], Default = 300 ft, 100 m)
Arrival Alarm
Circle
Off Course
Limits
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Depth Alarm
Depth Alarm sounds when the depth becomes equal to or less
than the menu setting.
To change the Depth Alarm setting:
1. Highlight Depth Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Alarm setting.
(OFF, 1 to 100 feet, or 0.5 to 30 meters [International Models Only], Default = OFF)
Fish ID Alarm
Fish ID Alarm sounds when the Matrix™ detects fish that
correspond to the alarm setting. Fish ID Alarm will only sound if Fish ID+™ is on.
To change the Fish ID Alarm setting:
1. Highlight Fish ID Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Alarm setting.
(Off, All, Large/Medium, Large, Default = Off)
Low Battery Alarm
Low Battery Alarm sounds when the input battery voltage is
equal to or less than the menu setting. The battery alarm will only sound for the battery that is
connected to the Matrix™. The Low Battery Alarm should be set to warn you when the battery
voltage drops below the safety margin that you have determined. For instance, if you are running
a trolling motor (battery operated), you would want to set the Low Battery Alarm to sound before
the battery voltage drops too low for it to be used to start your main, gasoline-powered engine.
To change the Low Battery Alarm setting:
1. Highlight Low Battery Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Low Battery Alarm
setting. (Off, 9.0V - 13.5V, Default = Off)
All
Large/Medium
Large
For example, if you've set the Fish ID Alarm to sound for Large fish only, the Fish ID alarm will
sound when a large-sized fish is detected.
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