Humminbird HELIX 5 DI, Operation Manual

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Sonar Menu Tab
SwitchFire
Settings: Max Mode, Clear Mode; Default = Clear Mode
SwitchFire controls how the sonar returns are displayed in the Sonar Views.
Choose Max Mode to see only raw sonar returns on the display. When Max Mode is selected,
you will see the maximum sonar information available within the transducer beam, so more fish
arches and better jig tracking are shown.
Choose Clear Mode to see less clutter and more fish size accuracy on the display. When Clear
Mode is selected, the clutter is filtered, and sonar returns are interpreted to provide more details
about the objects within the transducer beam, regardless of their location. In other words, a large
arch on the display means a large fish has been detected.
Fish ID+
Settings: Off, On; Default = Off
Fish ID+ 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.
In HELIX SONAR models , targets detected in the 200 kHz narrow beam are represented as orange
fish symbols, and targets detected in the 83 kHz wide beam are represented as blue fish symbols.
In HELIX DI models , targets detected in the 455 kHz conical beam are represented as blue fish
symbols, and targets detected in the 200 kHz conical beam are represented as orange fish symbols.
When Fish ID+ is turned off , the Fishfinder 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.
Transducer Cone and Fish Arches
orange fish symbols blue fish symbols