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D
Standard screen
q
w
e
r
q FREQUENCY
This field shows the frequency in use (
frequency,
: low frequency).
• Low frequency : 50 kHz, High Frequency: 200 kHz
w COLOR PATTERN
The color pattern consists of 16 colors arranged
in descending order of reflection level. If the clutter
function (p. 4-31) is ON, however, colors having a
lower reflection level may not be displayed.
The background color can be set to "Blue," "Black"
or "White" (p. 4-28). The image sensitivity should be
adjusted so that the portion close to the sea bottom
is indicated in red. If this portion has a yellow-green
color, the depth or the shape of sea bottom may not
be detected due to weak reflection from the sea bot-
tom.
e DEPTH
: high
This field shows the current depth of water. If the
level of reflections from the bottom is low, this may
not be displayed.
r OPERATION MODE
When the system operates in auto mode (p. 4-10),
"
" is displayed in this field.
• The Depth range is automatically adjusted.
• The GAIN can also be adjusted depending on the Auto
Mode Setup (p. 4-11).
t DEPTH SCALE
This screen has meters scales in 10 m increments.
4-3
SOUNDER OPERATION
t
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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