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modes (gain, color gain and TVG). Raymarine recommends that you allow your system to
automatically control the ideal sensitivity level based on depth and water conditions. You
can however adjust these settings manually if you prefer.
Range and shift values
By default, the sonar automatically adjusts the display depth range, selecting the
shallowest range that keeps the bottom in the lower half of the display window.
Alternatively clicking the
the scrolling bottom and A-Scope images. You can also shift the image up or down within
the current range. When you select Auto Range, the shift adjustments is reset to zero.
Range adjustments affect all sonar windows.
The range setting is indicated in the sonar status bar. The following range and shift values
are available:
Range
Range
Index
(feet)
1
5
2
10
3
15
4
20
5
30
6
40
7
50
8
60
9
80
10
100
11
150
12
200
13
250
14
300
15
400
16
600
17
800
18
1000
19
1500
RANGE
button lets you select the maximum depth displayed on
Range
Shift
(fathoms)
increment
(feet)
1
1
2
2
5
3
5
4
10
5
10
8
10
10
20
15
20
20
20
25
50
30
50
40
50
50
100
60
100
80
200
100
200
150
200
200
500
250
Range
Shift
(meters)
increment
(fathoms)
1
2
1
4
1
6
1
8
1
10
2
15
2
20
5
25
5
30
5
40
10
50
10
60
10
80
20
100
20
150
20
200
50
300
50
400
50
500
129
Shift
increment
(meters)
1
1
2
2
2
5
5
5
10
10
10
20
20
20
50
50
100
100
100
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