Choosing Range; Adjusting Gain - Furuno Color LCD Sounder FCV-620/585 Operator's Manual

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
Auto Manual
15 ft
30 ft
60 ft
120 ft
200 ft
400 ft
600 ft
1000 ft
/ : Select
[ENTER] : Set
[MENU] : Cancel
Range setting window
2. Use or 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
range.
Default ranges
Basic Range
Unit
1 2 3
m 5 10 20 40
ft 15 30 60 120 200 400 600 1000
fa 3 5 10 20
pb 3 5 10 20
HR* 4 8 15 30
*: Japanese unit of depth measurement
Note: Basic ranges may be preset as desired.
For further details, see page 20.
4. Press the ENTER key.
These are
available with
Manual mode.
or to choose the
4 5 6 7 8
80 150 200 300
40 80 100 150
50 100 150 200
50 100 150 200
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
Min
/ : Select
[ENTER] : Set
[MENU] : Cancel
Auto Gain setting window
2. Press the GAIN knob again to choose
Fishing or Cruising.
You may also use
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
(setting range: -5 to +5).
Pressing lowers the gain,
gain.
4. Press the ENTER key.
5
1. OPERATION
Fishing
Cruising
Off
Offset 0
Max
or to choose the
raises the
or