Humminbird ] 981 - Manual (Page 78)

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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 900 Series™
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 900 Series™. 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)
TEMP ALARM
Temp Alarm sounds when the water
temperature detected by the 900 Series™ 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)
All
Large/Medium
Large
Off
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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