Furuno FCV-288, Operator'S Manual

Page: 18 / 56

1. OPERATION
10
3. Select the color to erase and press the
ENTER key. The setting range is 0 to
50% in intervals of one per cent. The larg-
er the setting value, the greater the num-
ber of colors that are erased.
4. Press the MENU ESC key twice to close
the window.
1.14 A-scope Display
The A-scope display shows echoes at each
transmission with amplitudes and tone pro-
portional to their intensities, on the right 1/5 of
the screen. The display shows strong echoes
with strong amplitude; weak echoes in weak
amplitude. Thus the A-scope display is useful
for estimating the kind of school of fish and
bottom composition.
Note: The A-scope display is only available
with the high frequency display in dual fre-
quency operation.
1. Open the menu, select [Display] and
press the ENTER key.
2. Select [A-Scope] and press the ENTER
key.
3. Select [Off] or [On] and
press the ENTER key.
4. Press the MENU ESC key twice to close
the window.
1.15 Alarms
This fish finder has four fish alarms. When the
conditions of an alarm are met, the audio
alarm sounds and the alarm icon (flashing)
appears at the top right corner on the display.
The audio alarm may be silenced by pressing
any key. The alarm icon remains on the
screen until the cause of the alarm is removed
or the offending alarm is disabled.
Description of alarms
z Fish alarms
The fish school alarm alerts you to a school
of fish in the set alarm zone.
The bottom fish alarm is given when a fish is
within the specified distance from the bottom.
Available when the bottom lock display is ac-
tive.
The water temperature alarm* alerts you
when the water temperature is within (inside
alarm) the alarm range set or under/over (out-
side alarm) the range set.
The bottom alarm alerts you when the bot-
tom echo (displayed in red or reddish brown)
is within the alarm range set.
* Requires applicable sensor.
A-scope display
Fish echo
Weak reflection
(small fish or noise)
Single frequency display
x1
46.1
ft
Strong reflection
(bottom)
20
40
60
0
AUTO_R LF L:AF
AUTO_R AUTO_R
LF LF x1 x1 Alarm icon*
(flashing)
: Multiple alarm
* Appears when alarm
condition is met.
L:AF L:AF