To turn off upper and lower limits:
Reactivate Auto Depth Range. From the Sonar Page, press MENU↓ to
AUTO DEPTH RANGEENTEXIT.
FasTrack
This feature automatically converts all echoes to short horizontal lines on the display's far right side. The graph on the rest of the screen con- tinues to operate normally. FasTrack gives you a rapid update of condi- tions directly under the boat. This makes it useful for ice fishing, or when you're fishing at anchor. When the boat is not moving, fish sig- nals are long, drawn out lines on a normal chart display. FasTrack con- verts the graph to a vertical bar graph that, with practice, makes a use- ful addition to fishing at a stationary location.
Surface clutter
Fish arches 
Structure
In FasTrack, fish arches show as horizontal bars.
Bottom signal |
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ColorLine |
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| FasTrack |
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Sonar Page showing FasTrack. | bar graph | ||
Fish I.D. (Fish Symbols & Depths)
The Fish I.D. feature identifies targets that meet certain conditions as fish. The microcomputer analyzes all echoes and eliminates surface clutter, thermoclines, and other signals that are undesirable. In most instances, remaining targets are fish. The Fish I.D. feature displays fish symbols on the screen in place of the actual fish echoes.
There are several fish symbol sizes. These are used to designate the relative size between targets. In other words, Fish I.D. displays a small fish symbol when it thinks a target is a small fish, a medium fish sym- bol on a larger target and so on.
The sonar's microcomputer is sophisticated, but it can be fooled. It can't distinguish between fish and other suspended objects such as trotlines, turtles, submerged floats, air bubbles, etc. Individual tree limbs ex- tending outwards from a group of limbs is the hardest object for the Fish I.D. feature to distinguish from fish.
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