16
Unit Operation
Fish Symbols
—
Arches wil be displayed representing suspended targets.
All available backgroud information will be displayed.
—
Suspended targets displayed as symbols. In this mode,
background information will still be displayed making
fi sh identifi cation easier.
—
Same as above, with target depth displayed.
—
Suspended targets displayed as symbols. No background
information will be displayed in this mode.
—
Same as above, with target depth displayed.
The wide cone angles associated with low frequencies (40° for 50kHz)
provide a large coverage area for fi nding fi sh. However, this also means that
wide cone angles produce less bottom detail and resolution. The narrow
cone angles associated with high frequencies (10° for 200kHz) provide
better bottom resolution and crisper detail, but therefore cannot show a
large coverage area for fi nding fi sh. Dual frequency mode combines the
improved contour detail and depth readings of the 200kHz frequency with
the wide coverage area of the 50kHz frequency.
To select a Frequency:
1. Highlight the ‘Chart’ tab on the Setup Menu.
2. Highlight the ‘Frequency’ selection fi eld and press
ENTER
.
3. Using the
UP
or
DOWN
Arrow, choose ‘200kHz,’ 50kHz’ or ‘Dual’ and
press
ENTER
. The selected frequency will be displayed in the bottom
left-hand corner of the chart.
Fish Symbols
‘Fish Symbols’ allows the user to determine how the chart will display
underwater targets and background information. If ‘Fish Symbols’ is set
to ‘Off,’ the unit will display all of the available information about the
underwater environment. If a fish symbol is selected, the chart will display
only the information related to that symbol.
To select a Fish Symbol:
1. Highlight the ‘Chart’ tab on the Setup Menu.
2. Highlight the ‘Fish Symbols’ selection fi eld and press
ENTER
.
3. Using the
UP
or
DOWN
Arrow, select the desired symbol and press
ENTER
.
Setup Menu: Chart Tab
FF 160 B Rev B.indd
12/13/01, 2:50 PM
16
