Furuno CH-500, Руководство оператора

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2. HORIZONTAL MODE
2-13
Bottom echoes
When the tilt angle is changed, the seabed echo appears on-screen in the manner
shown below. When the tilt is decreased, the bottom trace become weaker. By observ-
ing the seabed condition on the display, you can prevent damage to your nets.
Narrow tilt angle
Only half of
vertical beam
width captures
the bottom.
Bottom echo
displayed narrower
and in stronger
colors when
compared to (A).
Bottom echo
Shallow bottom
is displayed in a
strong color and
with a short tail.
The deeper
bottom echo is
displayed in a
weak color and
with a long tail. The deeper
bottom echo is
displayed in a
weak color and
with a long tail. The deeper
bottom echo is
displayed in a
weak color and
with a long tail.
(A) Flat seabed
Tilt angle: 10° to 15°
(B) Flat seabed
Tilt angle: 20° or more
(C) Sloping seabed
Tilt angle: 20° or more