Furuno FCV-582L Operator's Manual page 13

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 bot-
tom. A long echo tail means a hard bottom.
Bottom-zoom display
15
20
25
36.4
Bottom
Figure 1-10 Bottom-zoom display plus
normal display
Bottom-lock display
The bottom-lock display provides a com-
pressed 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.
0
10
20
Zoom
marker
(yellow)
30
40
Normal
display
Zoomed
fish
Bottom-
lock
display
20.7
Figure 1-11 Bottom-lock display plus
normal display
Note: The zoom marker is not displayed in
the default setting. It may be turned on in Sys-
tem menu 1. For further details see page 15.
Data display
This display provides navigation data in digi-
tal form. Date, time, position, course, speed,
depth, water temperature and waypoint data
can be shown. Requires nav data input and
appropriate sensors.
POS
Position
CSE
Course, speed
DEP
Depth,
69. 4
temperature
Waypoint
WP
Range to waypoint
Bearing to waypoint
Cross-track error
Figure 1-12 Data display
Zoom marker (yellow)
0
This section
is zoomed
5
9.6
4
10
Fish
3
20
2
1
30
0
40
Normal
display
30 00. 065'N
130 00. 574'E
SPD
15. 6
143
kt
TMP
9. 3
m C
ABC
RNG 12nm
BRG 123. 4
XTE 1. 23nm
0
20
40
60
80
5