Multi Beam Sonar Dff-3D - Furuno TZT9 Operator's Manual

8.

MULTI BEAM SONAR DFF-3D

This chapter describes the display screens (modes) available with the Multi Beam So-
nar DFF-3D, which displays images of the underwater and the ocean floor with high
precision. Four display screens are provided, multi-sounder, side scan, cross section,
and 3D sounder history.
8.1 Display Screens Overview
Multi-sounder display
The multi-sounder display operates similar to the conventional fish finder, providing in-
formation about the seabed and underwater conditions. The video display scrolls from
the right to left with the passing of time.
The echoes appearing at the right edge of the display are the latest echoes. Echoes
from individual fish, schools of fish and the seabed are shown. With the gain set prop-
erly, the distance to the seabed appears on the screen.
The gain, clutter suppressor and TVG are adjusted according to the mode selected,
auto fishing or auto cruising. Manual adjustment of those controls is also possible.
The single beam presentation displays the information detected by the downward-
looking beam. The triple beam presentation displays the information detected by the
port beam, starboard beam, and downward-looking beam.
Seabed
echo
Depth
Below transducer Below transducer
Max. display depth Max. display depth
19.5
Frequency
Single beam display
Depth scale Depth scale
A-scope
8-1