Furuno FCV-587, Operator'S Manual

Page: 35 / 83

2. SYSTEM MENU
28
[ Water Type ]: Select the water type with
which to use the equipment, from [Salt] or
[Fresh]. Select correct water type to get accu-
rate depth data.
[ Zero Line Rejector ]: Turn the zero line
(transmission line) on or off. When turned on,
the transmission line disappears, which al-
lows you to see fish echoes near the surface
clearly. The length of the transmission line
changes with transducer used and installation
characteristics. If the width of the transmis-
sion line is 4.5 ft (default value) or more, set
the transmission line width with [Zero Line Ar-
ea], as below.
[ Zero Line Area ]: This fea-
ture adjusts the transmission
line so that the transmission
line disappears when the
menu item [Zero Line Rejec-
tor] is turned on. For a long tail, increase the
value. If the transmission line does not disap-
pear, lower the TX power.
[ Bottom Detect ]: In some in-
stallations the tail of the TX
line or the echo afterglow can
be mistaken for the bottom
echo. If this occurs, raise this
setting to solve the problem. Too low a setting
may prevent display of the bottom echo.
[ Bottom Level ]: In the default
bottom level setting (+0), the
equipment judges consecu-
tive strong echoes to be bot-
tom echoes. If, in that setting,
the depth indication is unstable, adjust the
bottom level. If vertical lines extend upward
from the bottom echo in the bottom lock dis-
play, lower the bottom level to erase the verti-
cal lines. If the level is too low, however, it
may be difficult to distinguish bottom fish from
the bottom echo.
2.7 Transducer Menu
[ Type ]: Select the transducer. See section
4.11.
2.8 Demo Menu
[ Demonstrate ]: The demonstration mode
provides, without connection of the transduc-
er, simulated operation of the equipment, us-
ing internally generated echoes. All controls
are operative. The message [DEMO] appears
at the bottom right corner on the screen when
the demonstration mode is active.
• [Off]: Deactivate the demonstration mode.
• [Demo1], [Demo3]: Shallow depth demo
mode
1/2 -50%
1/3 -65%
1/4 -75%
1/5 -80%
Compensation size Setting value
Bottom lock display
AUTO_R G:AF AUTO_R G:AF
BL-LF BL-LF x1 x1
0.0 0.0
0
10
20
30
40
0
10
20
30
40
5
4
3
2
1
0
5
4
3
2
1
0
21.7 21.7
m m
Bottom
Set the bottom level so that these vertical lines
just disappear.