Grayline – Lowrance electronic LCX-17M User Manual
Page 81
73
Sonar Features menu with a frequency of 200 kHz selected.
To change the frequency setting to 50 kHz:
1. From the Sonar Page, press
MENU
|
↓ to
S
ONAR
F
EATURES
|
ENT
.
2. Press
↓ to
50
K
H
Z
|
ENT
.
3. Press
EXIT
|
EXIT
to clear the menu.
To change the frequency setting to 200 kHz:
1. From the Sonar Page, press
MENU
|
↓ to
S
ONAR
F
EATURES
|
ENT.
2. Press
↓ to
200
K
H
Z
|
ENT
.
3. Press
EXIT
|
EXIT
to clear the menu.
Grayline
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.
Grayline is adjustable. The factory default for this unit is 69 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.
From a sonar page, press
MENU
|
↓
,
select
G
RAYLINE
,
then
press|
ENT
.