Raymarine e7 User Reference page 129

Menu item
AIS Targets
Fishfinder Deep
Fishfinder Shallow
Using alarms and MOB functions
Description
When set to On, the alarm for Dangerous Targets is enabled.
This option is only available when an AIS unit is detected. Refer
to the AIS section for details.
If this option is set to On, an alarm is triggered when the depth
exceeds the value that you specify. This option is only available
when a Digital Sounder Module (DSM) is detected.
Note: The Fishfinder Deep alarm limit cannot be set to a
value less than the Shallow Limit.
If this option is set to On, an alarm is triggered when the depth
drops below the value that you specify. This option is only
available when a Digital Sounder Module (DSM) is detected.
Note: The Fishfinder Shallow alarm limit cannot be set to a
value greater than the Deep Limit.
Options
Dangerous Targets
• On (default)
• Off
Fishfinder Deep
• Off (default)
• On
Deep Limit
• 2 ft (or equivalent units) to the maximum of the
transducer range
Fishfinder Shallow
• Off (default)
• On
Shallow Limit
• 2 ft (or equivalent units) to the maximum of the
transducer range
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