Furuno GP-1640F, Руководство оператора, Страница: 19 / 108

2-3
Selecting sounder display mode
There are five display modes from which to
choose: normal, marker zoom, bottom zoom,
bottom lock and A-scope. To select a display,
press the soft key SNDR FUNC on the normal
sounder display to show the sounder function
window, and press
▲ or ▼ to select the display.
Press the RETURN soft key to close the
window.
SOUNDER FUNCTION
NORMAL
MARKER ZOOM
BOTTOM ZOOM
BOTTOM LOCK
A-SCOPE
Sounder function window
Marker zoom display
This mode expands a selected area of the
normal sounder picture to full vertical size of
the screen on the left-half window. You may
specify the portion to expand by operating the
VRM (Variable Range Marker), which you can
shift with
▲ or ▼ . The area between the VRM
and zoom marker is expanded. The length of
the segment is equal to one division of the
depth scale.
200k
162
0
50
100
150
200
90.0
100
200
150
Marker zoom
display
Fish school
Normal
sounder
display
Fish
school
This part
is zoomed.
Zoom marker
VRM
GPS3D
Marker-zoom display
plus normal sounder display
Bottom-zoom display
This mode expands bottom and bottom fish
echoes two to five times to vertical size of the
screen, and is useful for determining bottom
hardness. A bottom displayed with a short echo
tail usually means it is a soft, sandy bottom. A
long echo tail means a hard bottom.
200k
0
50
100
150
40.0
160
100
120
140
180
Bottom zoom
display
Bottom
Normal
sounder
display
Zoom
marker
DGPS3D
162
200
Bottom-zoom display plus normal sounder
display
Bottom-lock display
The bottom-lock display provides a
compressed normal picture on the right half of
the screen and a 5 or 10 meter (10 or 20 feet)
wide layer in contact with the bottom is
expanded onto the left half of the screen. This
mode is useful for bottom discrimination.
200k
162
0
50
100
150
200
68.3
0
10
20
30
40
50
This part
is zoomed.
Fish
school
Bottom-lock
display
Fish
school
Zoom
marker
Normal
sounder
display
GPS3D
Bottom
display flat
Bottom-lock display
plus normal sounder display
Note:
The zoom marker is not displayed in the
default setting. It may be turned on in
the DISPLAY SETUP2 menu.