Eagle Fish I.D. II Specifications download pdf (Page 11)

TRANSDUCERS AND CONE ANGLES

The sound waves from the transducer

spread

out into the water in a

cone

shaped

beam. This looks much like the beam from a

flashlight.

The

angle

between the outside

edges

of the cone is the cone

angle.

Eagle

offers a choice of transducers with either an 8 or

degree

cone

angle. Typically,

wide cone

angle

transducers

(20 degrees)

are ideal

for

operating

in shallow to medium water

depths.

The 20

degree

cone

angle

allows

you

to see more of the underwater world. In 15 feet of

water the 20

degree

cone covers an area about six feet across. The 8

degree

transducer

covers

only

about a two foot circle.

The

degree

transducer is almost

always

the best to use in fresh

water,

the 8

degree mostly

salt water.

In a

deep

water

environment,

(300

feet

fresh

water,

100 feet

salt

water)

the narrow cone

angle

more desirable. Since the

sound

energy

is concentrated in a smaller

area,

it can

penetrate

to much

deeper depths.

50'

100'

150'

200'

8°at3db

CHART SPEED

power

on,

the chart

speed

scrolls at a

preset speed.

change

the

speed, press

the CHART SPEED

key.

The word "CHART"

will flash on

the

right

side of the

display.

A vertical bar will also

appear

on the left

side of the screen. This indicates the current chart

speed.

Next, press

the

arrow

key

you

wish to increase the chart

speed.

Press the

down arrow

key

to decrease it. When the chart reaches the desired

speed,

release the

key.

There are five

steps

of chart

speed.

When the

chart

speed

reaches its maximum or minimum

level,

the unit

will sound

a tone.

To view the chart

speed

without

changing it, press

the CHART SPEED

key.

The chart

speed

bar

will

appear

for

eight

seconds.

At times it is desirable to

stop

or "freeze" the

display

to examine an

echo before it scrolls off the screen.

Pressing

the SENS. and

CHART

SPEED

keys

at the same time will freeze the

display.

Press the SENS.

and CHART SPEED

keys again

to start the

display moving

at the

last

chart

speed selling.

If the

digital

sonar is

on,

the bottom

depth

will still

displayed.

The

digital

does not

stop

when the chart is in the "freeze"

mode.

20 9

____ n

AUTO

CHART

311

CL'

2O°at3.-

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Eagle Fish I.D. II Specifications Page 11

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