Furuno Color LCD Sounder FCV-620/585 - Manual (Page 14)

1. OPERATION
5
1.5 Choosing Range
The basic range may be chosen in Auto or
Manual mode.
1. Press the RANGE key to open the range set-
ting window.
Range setting window
2. Use
W
or
X
to choose Auto or Manual.
Auto: The range changes automatically to
display the bottom echo on the screen. The
range shifting functions are inoperative in
Auto mode. “R:A” is shown at the top left
corner on the screen.
Manual: The range may be chosen from the
eight ranges. “R:M” is shown at the top left
corner on the screen.
If you choose Auto go to step 4. For manual
go to the next step.
3. For Manual, use
S
or
T
to choose the
range.
*: Japanese unit of depth measurement
Note: Basic ranges may be preset as desired.
For further details, see page 20.
4. Press the ENTER key.
Note: The range mode indication, which
appears at the top-left corner, may be turned on
or off with Header Info on the Display menu. For
details, see page 18.
1.6 Adjusting Gain
The gain may be adjusted automatically
(Fishing or Cruising) or manually.
Fishing and Cruising
The gain (or receiver sensitivity) is adjusted
automatically for Fishing and Cruising mode so
that the bottom is displayed as reddish brown.
Gain offset lets you override automatic gain
adjustment.
1. Press the GAIN knob to open the Auto Gain
setting window.
Auto Gain setting window
2. Press the GAIN knob again to choose
Fishing or Cruising.
You may also use
S
or
T
to choose the
mode.
Fishing: This mode clearly displays weaker
echoes and is for searching fish schools.
“G:AF” is shown at the top left corner on the
screen.
Cruising: This mode clearly displays
stronger echoes (for example, bottom), sup-
presses weak echoes and is for general
cruising.
“G:AC” is shown at the top left corner on the
screen.
Off: For manual adjustment
Adjusting gain offset proceed, if not go to
step 4.
3. If you need, adjust the gain offset with
W
or
X
(setting range: -5 to +5).
Pressing
W
lowers the gain,
X
raises the
gain.
4. Press the ENTER key.
Default ranges
Unit
Basic Range
1 2 3 4 5 6 7 8
m 5 10 20 40 80 150 200 300
ft 15 30 60 120 200 400 600 1000
fa 3 5 10 20 40 80 100 150
pb 3 5 10 20 50 100 150 200
HR* 4 8 15 30 50 100 150 200
Range
S
/
T
: Select
[ENTER] : Set
[MENU] : Cancel
15 ft
30 ft
60 ft
120 ft
200 ft
400 ft
600 ft
1000 ft
W Auto Manual X
These are
available with
Manual mode.
Auto Gain
S / T : Select
[ENTER] : Set
[MENU] : Cancel
W
Min Max
X
Offset 0
Fishing
Cruising
Off