Eagle ULTRANAVGPS Specifications download pdf (Page 13)

GRAYLINP

GRAYLINE® lets

you

distinguish

between

strong

and weak

echoes. It

"paints"

gray

on

targets

that are

stronger

than a

preset

value. This

allows

you

to

tell the difference between

a hard and soft bottom.

For

example,

a

soft, muddy

or

weedy

bottom

returns a weaker

signal

which is shown with a

narrow or no

gray

line.

A hard bottom

returns a

strong signal

which

causes a wide

gray

line.

If

you

have two

signals

of

equal

size,

one

with

gray

and the other

without,

then the

target

with

gray

is the

stronger signal.

This

helps

distinguish

weeds from trees

on the

bottom,

or fish

from structure.

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GRAYLINE® is

adjustable.

Since GRAYLINE®

shows the difference

between

strong

and weak

signals, adjusting

Sensitivity may

require

a

different GRAYLINE®

level,

also. The level

chosen

by

the Ultra

at

power

on is

usually adequate

for most conditions.

Experiment

with

your

unit to find the

GRAYLINE®

setting

that's best for

you.

GRAYLINE®—

q3jFT

---20

4-c

Sc

To

adjust

GRAYLINE®,

press

the SENS

key.

The

sensitivity

menu

appears

in the

upper

left

side of the

display,

while the GRAYLINE®

switch label

appears

immediately

beneath it. First

press

the

key

adjacent

to the "SENS GRAY"

label. This

changes

the

sensitivity

adjust

menu to GRAYLINE®

adjust.

Now

press

the

key

adjacent

to

the

up

arrow to increase the

gray

level. Press the

key adjacent

to the

down arrow to decrease it. The

percentage

of GRAYLINE®

in use

changes

as the arrow

keys

are

pressed.

The bar chart also

gives

a

graphical

indication of the GRAYLINE®

level. You can see the

change

on the screen

(both

on the

menu and on the chart

record)

as

96

9

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