Instruction manual

CVS-128 Chapter 1 Basic Operation
0093112802-00 1-9
Caution: When only high frequency is
displayed, no gain adjustment at low
frequency is available. When only low
frequency is displayed, no gain
adjustment at high frequency is
available.
Selecting the auto gain
When the [Cruising] or [Fishing] is set, the gain
can be fine-adjusted.
1 Press [GAIN (HF) Knob] twice, and [Gain
select] is displayed. (The high frequency is
explained below.)
Caution: The low frequency can be set by
[GAIN (LF) Knob].
2 Select the [Cruising] or [Fishing] by rotating
the [Knob].
3 Press the [MENU] key to close the menu.
When the [Cruising] is set, the [L: AC] [H:
AC] is displayed at the upper side of menu.
When the [Fishing] is set, the [L: AF] [H: AF]
is displayed at the upper side of menu.
Adjusting the gain by auto
The auto gain adjustment can be set to [Auto
adjust high] or [Auto adjust low]. (Setting:-10 ~
10)
1 Turn [GAIN (HF) Knob], and [Auto adjust
high] is displayed. (The high frequency is
explained below.)
Caution: The low frequency can be set by
[GAIN (LF) Knob].
2 Fine-adjust the gain by rotating the [GAIN
(HF) Knob]. The [Cursor
]
key menu position
can be moved.
3 Every time when pressing the [Gain select]
and [Auto adjust high] are alternately
displayed.
4 Press the [MENU] key to close the menu.
Selecting the manual gain
Adjustment of gain can be done manually.
1 Press [GAIN (HF) Knob] twice, and [Gain
select] is displayed. (The high frequency is
explaied below.)
Caution: The low frequency can be set by
[GAIN (LF) Knob].
2 Select the [Manual] by rotating the [Knob].
3 Press the [MENU] key to close the menu.
Manual adjustment of the gain
When the image of High frequency only is
displayed on the display, the High frequency gain
can be adjusted. (Setting: 0 ~ 10)
When the image of Low frequency only is
displayed on the display, the Low frequency gain
can be adjusted.
Caution: If you increase the gain too much,
noise will appear on the entire image,
resulting in an unclear image. Adjust
properly the gain so that the optimum
image can be always displayed.
Over-gain
Under-gainOptimum
1 Turn [GAIN (HF) Knob] to display [Auto
adjust high]. (The high frequency is
explained below.)
Caution: The low frequency can be done
by [GAIN (LF) Knob].
2 Adjust the gain by rotating the [Knob]. The
[Cursor
]
key menu position can be moved.
Stop increasing of the gain just before noise
appears on the image.
3 Every time when pressing the [Gain select]
and [Gain (H)] are alternately displayed.
Auto adjust high
0
Gain select
Manual
Cruising
Fishing
Gain(H)
6.0