Calibrate Speed - Eagle Optima Operation Instruction Manual

the depth, since the transducer is one
foot below the surface. Press the right
arrow key, then the up or down arrow
keys until 1.0 appears in the "Adj Keel"
box, as shown at right, then press the
ENT key. This immediately changes
the digital depth display at the top of
the screen by one foot. Press the EXIT
key to erase this menu.
Note: Another way to use the keel
offset feature is if you want to know the
depth of the water below the lowest
part of the boat, instead of the surface.
To do this, measure the lowest part of
the boat below the transducer. In this
example, we'll use 3 feet. Now, using
the keel offset feature, adjust the off-
set for a negative 3 feet, as shown at
right.
Please note that adjusting the keel
offset only affects the digital depth
display and all features that use the
digital depth, such as the depth alarms
and FishTrack. This doesn't affect the
chart at all.

Calibrate Speed

You can calibrate the speed display if
an optional speed sensor is attached
to the Optima. To do this, highlight the
"Calibrate Speed" label on the "Sys-
tem Setup" menu, then press the right
arrow key. A screen similar to the one
at right appears.
If the digital speed display is slower
than your actual speed, add a positive
percentage to make it read faster. If
the digital speed display is faster, use a negative percentage to make it
read slower. Use the arrow keys to change the speed, then press the ENT
key. Press the EXIT key to erase this menu.
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