Instruction manual

Chapter 1 Basic Operation CVS-128
1-8 0093112802-00
1.5 Switch-over of Range
The range of measured depth displayed on the
display can be changed.
To meet your purpose, select the range of
measured depth.
Setting the range switching to auto
range
By following automatically the bottom, the image
of echo sounder in the suitable range of
measured depth can be displayed.
This mode is convenient to display always the
range from sea level to bottom.
The range value
changes
1 Press [▲] or [▼] key of [▲RANGE▼].
2 Select the [Auto Range]. (Press [▲] or [▼]
key of [▲RANGE▼])
3 Press [MENU] to close the menu.
When [Auto Range] is set, the [R:A] is
displayed a the upper side of menu.
Caution: At auto range, this sounder can
sound the area up to the maximum
range registered. The maximum range
is 800 m. At the initial setup, the range
is up to 500 m. (See [2.11 Preset of
Range])
Setting the range switching to Manual
range
The range can be manually selected:
1 Press [▲] or [▼] key of [▲RANGE▼].
2 Select the range you desire to set. (Press
[▲] or [▼] key of [▲RANGE▼])
3 Press the [MENU] key to close the menu.
When the [Manual] is set, the [R: M] is
displayed at the upper side of menu.
1.6 Gain Adjustment
The gain can be adjusted in the auto mode (Echo
sounder mode, Depth mode) or manual mode.
[Cruising]
Eliminating the weak echo, it displays clearly the
sea bottom of strong echo.
It is suitable for cruising to the fishery ground.
[Fishing]
It displays clearly the weak echo reflected from
the school of fish.
It is suitable for searching the schools of fish.
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].
Range
5.0
1
0.0
50.0
80.0
100.0
150.0
300
500
Auto shift
Auto range
Range
5.0
10.0
50.0
80.0
100.0
150.0
300
500
Auto shift
Auto range