Eagle Electronics CUDA 242 - Manual (Page 52)

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You may see Fish I.D. symbols on the screen when actually, there are no fish.
The reverse is also true — Fish I.D. can actually miss fish that are present.
Does that mean Fish I.D. is broken? No — the feature is interpreting so-
nar returns in a specific way to help take some of the work out of reading
the screen. Remember: Fish I.D. is one of the many tools we provide so
you can analyze your sonar returns for maximum fish finding informa-
tion. This and other features can help you "see" beneath the boat under
varied water and fishing conditions. So, practice with the unit in both the
Fish I.D. mode and without to become more familiar with the feature.
This unit's default Fish I.D. setting is on.
Fish I.D. is most handy when you're in another part of the boat or per-
forming 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 so-
nar detail gathered by your unit. For example, it can help cut through
the clutter of suspended bubbles caused by wave action or boat wakes.
To turn Fish I.D. off, press
MENU
until the
F
ISH
ID
menu appears. Press
↓ to select
O
FF
, then press
PWR
. To turn it back on, repeat the above
steps, but press ↑ to select
O
N
.
FishTrack™
The FishTrack  feature shows the depth of a fish symbol when it ap-
pears on the display. To turn it on, press
MENU
until the
F
ISH
ID
menu
appears. Press ↑ to select
T
RACK
O
N
, then press
PWR
. To turn it off, re-
peat the steps above, but press ↓ to select
O
FF
. (If you want to turn off
FishTrack depths but leave Fish I.D. on, press ↓ to select
O
N
, then press
PWR
.) Remember, Fish I.D. must be on in order to use the FishTrack
feature.