Fish Alarm; Fish Sensitivity; Shallow Alarm; Shallow Range - Raymarine DSM25 Owner's Handbook Manual

Chapter 4: Fishfinder Setup

Fish Alarm

If this alarm is ON, the unit sounds a beeper whenever it finds a fish. The default
setting is OFF.

Fish Sensitivity

If the Fish Alarm is set ON, an alarm is triggered when the fish return strength
reaches the sensitivity that you specify. Using the rotary knob, select from 1
(lowest sensitivity) to 10 (highest sensitivity). The default setting is 6.

Shallow Alarm

If this alarm is ON and the depth below the boat is less than the value set using the
Shallow Range setting, the beeper sounds and the alarm message box appears.
You cannot set the shallow alarm to be deeper than the deep alarm. The default
setting is OFF.

Shallow Range

Use the rotary knob or up/down trackpad keys to increment/decrement the depth
at which the Shallow Alarm will sound. The depth unit (meters, feet, or fathoms)
is dependent on the Units parameter set in the System Setup menu. Changing the
value set for Shallow Range automatically enables the Shallow Alarm.

Deep Alarm

If this alarm is ON and the depth below the boat is greater than the value set using
the Deep Range setting, the beeper sounds and the alarm message box appears.
You cannot set the deep alarm to be shallower than the shallow alarm. The
default setting is OFF.

Deep Range

Use the rotary knob or up/down trackpad keys to increment/decrement the depth
at which the Deep Alarm will sound. The depth unit (meters, feet, or fathoms) is
dependent on the Units parameter set in the System Setup menu. Changing the
value set for Deep Range automatically enables the Deep Alarm.

Temp. Alarm

If this alarm is ON and the measured water temperature exceeds the value set in
Temp. Range High or falls below the value set in Temp. Range Low, the beeper
sounds and the Temp. Alarm message box appears.
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