CVS-128/128B Chapter 1 Basic Operation
0093112802-06 1-11
Basic Operation of Gain
When [GAIN (HF) Knob] or [GAIN (LF) Knob] is
pressed twice, the screen of [Gain select] is
displayed.
By rotating the [GAIN (HF) Knob] or [GAIN (LF)
Knob], the gain adjustment or auto gain can be
selected.
Caution: The high frequency can be set by
[GAIN (HF) Knob] and the low
frequency can be set by [GAIN (LF)
Knob].
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:-30 ~
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 [GAIN (HF) Knob] is
pressed, 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 only the image of High frequency is
displayed, the High frequency gain can be
adjusted. (Setting: 0 to 10)
When only the image of Low frequency is
displayed, 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.)
uto adjust high
0
Gain select
Manual
Cruising
Fishing
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