JRC JFS-280, Инструкция по эксплуатации

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5 Adjusting How Images Appear 5-4
5
5.1.2 Tilt Angle and the Appearance of Images of Schools of Fish
1) Appearance of schools of fish that are at the surface of the sea.
Searches at a tilt angle near 0° to 10°.
2) Appearance of schools of fish that are distributed from above the sea floor to the middle
layer
•
When searching at a tilt angle near 30°
By lowering the tilt angle to search, images of fish schools appear within the sea floor.
Adjust the tilt angle according to the depth of the distribution of the school of fish and the depth
of the sea floor, and then search.
•
When searching for schools of fish in the middle layer at a tilt angle between
0° and 20°
When using a shallower tilt angle, the middle layer echoes may allow you to find fish echoes
ahead because the echoes from the sea floor are weaker. The image becomes easier to see
than if the tilt angle is lowered.
Tilt angle
School of
fish
Reflection of the surface of the sea,
clutter near the surface of the sea, etc.
School of
fish
Sea floor
Sea floor
School of
fish
Tilt angle