Operations Manual

33
Fish ID+
TM
Fish ID+
TM
uses advanced signal processing to interpret
sonar returns, andwill displaya FishSymbol whenvery selective requirements aremet.
When a fish isdetected,a fish iconandits deptharedisplayedabovethereturn 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.
Targets detected in the 200 kHz narrow beam are represented as Shaded Fish
Symbols, and targets detected in the 83 kHz wide beam are represented as Hollow
Fish Symbols.
When Fish ID+
TM
is turned off, the Fishing System shows only the raw sonar returns on
thedisplay.These returnswilloftenresult in "arches"formingonthedisplay,indicating
potential targets. Dueto the transducer beam angle, the distanceto a fishdecreases as
thefishmoves 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.
To turn Fish ID+ 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