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GRAYLINE
Grayline
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.
Grayline is adjustable. The factory default for this unit is 72 percent.
Since Grayline shows the difference between strong and weak signals,
adjusting the sensitivity may also require a different Grayline level.
The level chosen by the sonar unit at power on is usually adequate for
most conditions. Experiment with your unit to find the Grayline setting
that's best for you.
To change the Grayline level, press
Press
UP ARROW
decrease it. The percentage of Grayline in use shows in this menu.
Echoes scrolling onto the screen will also show the effects of the
Grayline change. If you reach the maximum or minimum level, a tone
sounds alerting you to the limits. Press
ALARMS
The sonar unit has three different types of alarms: fish, shallow and deep.
Fish Alarm
The Fish Alarm sounds a tone when a fish symbol appears on
the screen. The default setting is on, but the Fish I.D. feature
must be turned on for fish alarms to work.
To turn Fish I.D. on, press
appears. Press
press
until the
MENU
select
, then press
O
N
To turn off the fish alarm without turning off fish symbols, press
until
DOWN
F
ISH
press
to clear the menu. Repeat the above steps to turn the alarm
PWR
back on, but press
®
lets you distinguish between strong and weak
to increase the level or press
UP ARROW
F
A
ISH
.
PWR
appears. Press
A
LARM
UP ARROW
until the
MENU
PWR
MENU
to select
menu appears. Press
LARM
DOWN ARROW
to select
before clearing the menu.
O
N
9
menu appears.
G
RAYLINE
DOWN ARROW
to clear the menu.
until the
F
, then press
O
N
UP ARROW
to select
to
menu
ID
ISH
. Then,
PWR
to
MENU
, then
O
FF
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