Displaying The Fish Finder Page; Menu Selection (All Gps Chartplotters) - Standard Horizon FF520 Owner's Manual

50/200khz black box fish finder

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Installation and operation manual (45 pages)

Owner's manual (42 pages)

Owner's manual addendum (1 page)

Table Of Contents

Table of Contents

temperature differential, the denser the thermocline shows on the screen. Ther-

moclines are represented as horizontal stripes of noise. They are very important for

fishing since often many species of game fish like to suspend in, just above, or just

below the thermoclines.

White Line

The White Line shows the difference between hard, soft bottoms and even distinguish-

es between fishes and structures located near the bottom. In this way it is easier to tell

the difference between a hard and soft bottom and even to distinguish fishes and

structures located nearby the bottom. For example, a soft, muddy or weedy bottom

returns a weaker echo that is shown with a narrow white line while a hard bottom returns

a strong echo that causes a wide white bottom line.

Surface Clutter

Appears like noise at the top of the screen extending many feet below the surface. It's

caused by many things, including air bubbles, bait fish, plankton and algae.

Structures

Generally, the term "structure" is used to identify objects like wrecks and weeds rising

from the bottom.

Bottom Echo Profile

Bottom profile recorded by the FF520. When the echo sounder is set in auto-range

mode it is automatically kept in the lower half of the screen.

Other Elements

Large anchoring cables are returned by the echo sounder as very long and narrow arcs on

the screen.

3.1