Filter
Top Products
10
1.13 Erasing Weak
Echoes
Sediment in the water or reflections from
plankton may be painted on the display in
low intensity tones.
Weak
echoes
Appearance of weak echoes
These weak echoes may be erased as
follows:
1. Press the [MENU/ESC] key to open the
menu.
2. Use ▲ or ▼ to choose SIGNAL LEVEL
from page 1 of the menu.
3. Press ► to show the options window.
4. Use ▲ or ▼ to choose the degree of
suppression desired; Off, Low, or High
(highest).
5. Press the [MENU/ESC] key to close the
menu.
6. To turn off the signal level function,
choose "Off" at step 4 and then press
the [MENU/ESC] key.
1.14 White Line
The white line feature displays a leading
edge of the bottom echo in white. This is
useful for discriminating bottom fish near
the bottom.
1. Press the [MENU/ESC] key to display
the menu.
2. Use ▲ or ▼ to choose WHITE LINE
from page 1 of the menu.
3. Press ► to show the options window.
4. Use ▲ or ▼ to choose Off, Tone or
Mesh as appropriate. “Mesh” paints the
white line in darker tone than “Tone.”
5. Press the [MENU/ESC] key to close the
menu.
52.6
White Line OFF
White Line ON (Mesh)
m
Fish school
clearly shown
White line
0
20
40
60
80
0
50k
1/1
52.6
0
20
40
60
80
0.0
0
50k
1/1
How white line works
1.15 Waypoints
Waypoints may be used to:
•
Record the latitude and longitude position
of an important echo. 12 points may be
registered.
•
Output a waypoint position to a plotter to
mark position on its screen
•
Find range, bearing and time-to-go to a
location (waypoint)
Note: Requires latitude and longitude
position from a navigator.
Registering a waypoint on the
screen
1. Press the [MARK] key. The cursor
appears along with waypoint entry
instructions.
Note: If there is no position data the
message “No position data!” appears.
Check the navigator.
50k
49.6
1/1
0.0
20
40
60
80
0
Cursor
WAYPOINT ENTRY
( Move) Cursor
[MARK] Enter
[MENU] Cancel
50 kHz display