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Important Tip:
While you are experimenting and learning, it's possible to scramble
the settings so that the sonar picture disappears from your screen.
If that happens, remember that it's easy to switch back to full
automatic operation by simply restoring the factory auto settings.
Here's how:
To Restore Factory Settings
1. Press MENU|MENU|↓ to SYSTEM SETUP|ENT|↓ to RESET
OPTIONS|ENT.
2. The unit asks if you want to reset all the options. Press ← to
YES|ENT. All options are reset and the unit reverts back to the Map
Page at the 4000-mile zoom range. (Any recorded sonar logs or GPS
data will be unchanged.)
Fish Symbols vs. Full Sonar Chart
You may have noticed in the quick reference that we used fish arches in
full sonar chart mode for our example, and not the popular Fish I.D.
fish symbol feature. Here's why.
Fish I.D. is an easier way for a sonar novice to recognize a fish signal
return when he sees it. However, locating a fish via symbol has some
limitations.
Your sonar unit's microprocessor is remarkably powerful, but it can be
fooled. Some of the echoes calculated to be fish could be tree limbs or
turtles! To see what's under your boat in maximum detail, we
recommend you turn off Fish I.D. and begin learning to interpret fish
arches.
Fish I.D. is most handy when you're in another part of the boat or
performing some task that prevents you from watching the sonar
screen. Then, you can turn on Fish I.D. and the audible fish alarm.
When that lunker swims under your boat, you'll hear it!
Fish I.D. can also be useful when you want to screen out some of the
sonar detail gathered by your unit. For example, in one case, fisherman
in San Francisco Bay saw clouds of clutter in the water but no fish
arches. When a downrigger was pulled up, it brought up several small
jellyfish. The fisherman switched their Lowrance sonar to Fish I.D.,
which screened out the schools of jellyfish and clearly showed the game
fish there as fish symbols.
Other Free Training Aids
The sonar options section discusses Fish I.D., fish alarms and other
features in greater detail. If you or a friend has Internet access, you can
also learn more about interpreting what you see on your sonar screen.