Humminbird 587ci, 597ci Fish ID+™, DualBeam, To turn Fish ID+™ on or off:, 1.Highlight Fish ID+ on the Sonar main menu, Fish ID+™ uses a dvanced sig nal proc essing to

Fish ID+™Fish ID+™ uses a dvanced sig nal proc essing to

interpret s onar returns and will display a Fish	Symbol when very se lective
requirements a re met. When a fish is detected,	a fi sh icon and i ts 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 providean indicator of relative fish size.

DualBeam sonar models represent t argets d etected in the 20 0 kH z narro w beam as Orange Fish Symbols and targ ets detected in t he 83 kHz wide beam as Blue Fish Symbols.

200 kHz, Narrow Beam	83 kHz, Wide Beam
Orange Fish Symbols	Blue 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“ for ming on the display, indicating potential targets. D ue t o t he t ransducer b eam angle, the distance to a f ish decreas es 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

To turn Fish ID+™ on or off:1.Highlight Fish ID+ on the Sonar main menu.

2.Press the LEFT or RIGHT Cursor keys to turn the Fish ID+™ setting On or Off. (Off, On, Default = On)

Sonar Menu Tab 76