The last alarm is the Depth Alarm, which has both a Shallow and a Deep setting. This is useful as an anchor watch, a shallow water alert or for navigation.
Depth Alarms
The depth alarms sound a tone when the bottom signal goes shallower than the shallow alarm's setting or deeper than the deep alarm's set- ting. For example, if you set the shallow alarm to 10 feet, the alarm will sound a tone if the bottom signal is less than 10 feet. It will continue to sound until the bottom goes deeper than 10 feet.
The deep alarm works just the opposite. It sounds a warning tone if the bottom depth goes deeper than the alarm's setting. Both depth alarms work only off the digital bottom depth signals. No other targets will trip these alarms. These alarms can be used at the same time or individually.
At left, Main Menu and Sonar Alarms command.
At right, the Sonar Alarms menu.
To adjust and turn on the shallow alarm:
1. Press ALARM→ to SHALLOW ALARM DEPTHENT.
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