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Fish ID+
TM
Fish ID+
TM
uses advanced signal processing to interpret
sonar returns, and will display a Fish Symbol when very selective requirements are met.
When a fish is detected, a fish icon and its depth are displayed above the return that has
been classified as being a fish. Three different fish size icons represent the intensity of
the sonar return, and provide an indicator of relative fish size.
DualBeam PLUS
TM
Sonar models represent targets detected in the 200 kHz narrow beam
as Shaded Fish Symbols, and represent targets detected in the 83 kHz wide beam as
Hollow Fish Symbols.
When Fish ID+
TM
is turned off, the 300 Series
TM
Fishing System shows only the raw sonar
returns on the display. These returns will often result in "arches" forming on the display,
indicating potential targets. Due to the transducer beam angle, the distance to a fish
decreases as the fish moves into the beam, and then increases as it moves out again,
creating a Fish Arch when this distance change is shown on the display. Boat speed,
chart speed, and the position of the fish within the sonar beam greatly affect the shape
of the arch.
T
o turn Fish ID+
TM
on or off:
1. Highlight Fish ID+ on the Sonar main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Fish ID+
TM
setting
On or Off. (Off, On, Default = Off)
Transducer Cone and Fish Arches
200 kHz, Narrow Beam
Shaded Fish Symbols
83 kHz, Wide Beam
Hollow Fish Symbols