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When the voltage drops below your selected voltage, an audible alarm will
sound, and a battery alarm icon will be
displayed on screen with current voltage
level.
Bottom Black. There are two selections
available: Off and On. The factory setting is
Off. With this setting, the 425SX displays the
bottom using 4 level grayscale. This allows
you to determine the texture
and relative hardness of the
bottom. Selecting Bottom
Black “ON” causes the unit to
blacken in the display below
the bottom. This gives the user
easiest recognition of the
bottom location, even from a
great distance.
The 425SX remembers the
Bottom Black setting when
powered off.
Fish ID. There are three selections available: Off, ID+
ON, and Adjust. The factory setting is ID+ OFF. With
Fish ID Off, sonar returns are displayed as “raw”
information. There is no interpretation made by the
unit. Selecting ID ON also enables the fish alarm.
ID+ On enables the 425SX to interpret the raw sonar
data and, using a variety of techniques, depict
appropriate target returns as one of three different
size fish symbols. Further identification shows which
beam the fish is detected in. The 425SX also displays
the depth beneath the surface with the
corresponding fish symbol.
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USING THE 425SX
MENU FUNCTIONS
ID+ On Raw Sonar
Bottom Black View