Humminbird 500 SERIES 596C - Manual (Page 47)

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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 Fishfinder. The Low Battery
Alarm should be set to warn you when the battery voltage drops below the
safety margin that you have determined.
To change the Low Battery Alarm setting:
1. Highlight Low Battery Alarm on the Alarms main menu.
2. Press the LEFT or RIGHT Cursor keys to change the Low Battery Alarm
setting. (Off, 8.5V - 13.5V, Default = Off)
Temp. Alarm
Temp. Alarm sounds when the water temperature
detected by the Fishfinder reaches the Temp. Alarm setting, which is either set in
degrees Fahrenheit or Celsius [International Models only].
To change the Temp. Alarm setting:
1. Highlight Temp. Alarm on the Alarms main menu.
2. Press the LEFT or RIGHT Cursor keys to change the Temp. Alarm
setting. (Off, 33-120 [Fahrenheit], 0-50 [Celsius], Default = Off)
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.
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.
Alarms Menu Tab