2. SLANT MODE
2-30
Fish histogram
The fish histogram shows, in graph form, signal strength distribution for the school(s)
of fish marked with an estimate mark on the horizontal displays. The histogram display
for each of those displays will be different since the calculation method is different.
This data appears only when an estimate mark is active. When two estimate marks
are active, histograms are displayed one on top of the other as below.
The horizontal axis shows signal strength in 16 colors, and the vertical axis shows the
concentration of a school of fish inside the fish estimate mark. For the fish estimate
mark inscribed on the horizontal display the graph shows the average movement in
five scans, to increase accuracy.
Note:
The histogram display is redrawn five transmissions after a fish estimate mark
is erased and another mark of the same number is entered soon after.
2.17.2
How to compare with the circle cursor
You can get an estimate of the volume of two schools of fish by measuring the diam-
eter of the school of fish as follows:
1. Push the wheel to show the circle
around the normal cursor.
2. Place the circle cursor on the
school of fish.
3. Rotate the wheel to adjust the size
of the circle cursor.
Set the school of fish in the circle
cursor to estimate correctly. The
diameter of the circle cursor is displayed below the circle cursor.
Note:
If the diameter of the circle cursor is 100 m or more, diameter is rounded off
to the nearest ten.
4. Place the circle cursor on another school of fish to estimate the volume.
You can compare the volume of two schools of fish with the diameter of the school
of fish.
5. Right-click to quit the measurement.
The circle is removed and the normal cursor is restored.
Note:
You can set the diameter of the circle cursor at [4 Circular Cursor Diameter]
(Main menu
→
[9 Installation Setting]
→
[2 Operation Setting]
→
[2 Mouse Wheel Set-
Fish estimate
mark source
Fish estimate
mark no.
Estimate mark 1 or estimate
mark 2 displayed
Both estimate marks displayed
2
1
2
Scan1
Scan1
Fish estimate
mark source
Scan1
83m
Diameter of the circle cursor
Содержание FSV-75
Страница 1: ...OPERATOR S MANUAL www furuno com HALF CIRCLE COLOR SCANNING SONAR Model FSV 75 FSV 75 3D ...
Страница 78: ...2 SLANT MODE 2 44 This page is intentionally left blank ...
Страница 110: ...4 FISH FINDER MODE 4 12 This page is intentionally left blank ...
Страница 144: ...5 3D MODE 5 34 This page is intentionally left blank ...
Страница 148: ...6 NUMERIC GRAPHIC DATA DISPLAY 6 4 This page is intentionally left blank ...
Страница 158: ...7 HOW TO CUSTOMIZE THE SONAR 7 10 This page is intentionally left blank ...
Страница 216: ...10 MAINTENANCE 10 28 This page is intentionally left blank ...
Страница 234: ...INDEX IN 3 W Warning messages 10 5 X XSECT ON OFF button 5 6 Z Zoom in out 5 4 ...
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