Operation
10
SECTION 3 Operation
3.1 Screen layout
Fishfinding Displays
Ultrasonic signals transmitted from the
transmitter/receiver at the bottom of the
boat are reflected upon the underwater
plankton, fish schools, and sea bottom
and are received by the transmitter/
receiver. The sounder monitor screen
displays underwater responses in
varying color tones (from light blue to
reddish brown) according to their
intensity level.
Responses from small fish schools are
dimly displayed in light blue, while those from larger, denser fish schools are clearly marked in orange. The sea
bottom appears in red or reddish brown.
The sounder monitor can be switched to the STANDARD mode, the VRM EXPAND mode, the BOTTOM LOCK
EXPAND mode, or the MIXED mode. Each corresponding mode display can be mixed by an A-scope view to
display fish school responses in varying color tones and widths according to their intensity.
<
STANDARD mode
(Keyboard unit⑧, see page 8)
Three kinds of display are selectable: a low-
frequency display, a high-frequency display,
and a low- and high-frequency split display.
(Among these, the split display depends on
the setting of the mode of split display in
the display submenu.)
<
VRM EXPAND mode
(Keyboard unit⑧, see page 8)
Three kinds of display are selectable: a split
display of a standard display and a low- or
high-frequency display, a low- and high-
frequency split display, and a frequency-
specific partially expanded display,（Among
these, the split display depends on the
setting of the mode of split display in the
display submenu.）
Low-frequency partially
expanded display
High-frequency partially
expanded display
Low- and high-frequency
partially expanded display
Water temperature
Weak
Depth unit
Strong
Color sample
Depth scale
Cursor
Fish school
Chart speed
Interference rejection level
Time Mark
Water depth
Sea bottom
Low-frequency display High-frequency display Low- and high-frequency
split display
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