Furuno FSS-3BB Installation Manual page 48

3. INITIAL SETTINGS
Menu item
[Bottom Lock Mode]
[Bottom Color]
[Zero Line Rejection]
[Zero Line Area]
[Zero Line Fill]
4. Select [HF] from the menu on the left-hand side of the window.
5. Set the menu items, referring to the following table.
Menu item
[Bottom Level]
[Draft]
3-14
Set how the bottom edge is determined, by signal level or dis-
play color.
• [Level]: Determine the bottom edge by signal level. When the
method is [Color], bottom fish my be hidden in the bottom
edge. With [Level] the shape of the bottom echo may change
depending on the bottom contour of the bottom.
• [Color]: Determine the bottom edge by display color. When
bottom fish are well separated from the bottom, the bottom is
displayed with a straight line, making discrimination of bot-
tom fish easier. However, the bottom presentation may
change depending on gain setting. When set to Color, select
the color (0-63) to be judged as the bottom echo.
This menu item is available when [Bottom Lock Mode] is set to
[Color]. The higher the setting, the strong color echo (reddish
brown, red) is recognized as the bottom.
Turn the zero line (transmission line) on or off. When turned on,
the transmission line disappears, which allows you to see fish
echoes near the surface clearly. The length of the transmission
line changes with the transducer used and installation charac-
teristics. If the width of the transmission line is 4.5 ft or more, set
the transmission line width with [Zero Line Area].
This feature adjusts the transmission line so that the transmis-
sion line disappears when the menu item [Zero Line Rejection]
is turned on. For a long tail, increase the value (setting range:
4.5 to 9.8 ft). If the transmission line does not disappear, lower
the TX power.
Turn off to see fish echoes within 1 m from the surface.
××.××
Advanced Settings
IDENTI-FISH
ID1
Bottom Level
0
ID2
Draft 0.0
A A larm
S t System Gain G i ADJ ADJ 0
Range
TX/RX
HF
LF
Control Cont rol Unit Unit
User Interface Settings
Calibrat Cali bration ion
HF HF
LF LF
St b Stabili iliz ation ti
HF HF
LF LF LF
Mode Mode Mode
Test Tests T t s
S S Service ervi i ce
In the default bottom level setting (+0), the equipment judges con-
secutive strong echoes to be bottom echoes. If, in that setting, the
depth indication is unstable, adjust the bottom level (setting range:
-40 to +40). If vertical lines extend upward from the bottom echo
in the bottom lock display, lower the bottom level to erase the ver-
tical lines. If the level is too low, however, it may be difficult to dis-
tinguish bottom fish from the bottom echo.
The default depth display shows the distance from the transducer.
If you would rather show the distance from the sea surface, set
your ship's draft (setting range: -30.0 to +99.9 ft). The draft line for
HF and LF can be set respectively.
Description
Calibration : HF
Description