Furuno TZT2BB User Manual

6. RADAR
6-24
[Rough]: Suitable in rough weather conditions where sea clutter is strong. Applies high
sea clutter reduction. Weak bird echoes may be suppressed in this setting.
To select the bird mode setting, open the [Layers] menu, then, at [Bird Mode], select
the desired setting option, [Calm], [Moderate], [Rough], or [Off].
Usage precautions
• Bird mode is available with radar sensors DRS2D/4D/4A/6A/12A/25A, software ver-
sion 01.18 or after. Bird mode is also available with the X-Class radar sensors
(DRS6A X-Class, DRS12A X-Class, DRS25A X-Class) and the solid-state radars
DRS4D-NXT/6A-NXT. The radar sensors DRS4DL/DRS4DL+ do not support Bird
mode.
• Do not use the Bird mode in rough weather.
• Do not use the Bird mode during a voyage. The Bird mode settings are not suitable
in a voyage.
• ARPA performance may be reduced when the Bird mode is active.
• Radar Adjust (Gain, Sea, Rain) and Auto Sea Mode cannot be adjusted when the
Bird mode is active.
• Schools of fish that attract birds tend to dive suddenly, which may result in unstable
or disappearing echoes.
6.23 Target Analyzer
™
The Target Analyzer
™
paints radar echoes in the colors shown in the illustration and
table on the next page, to help you distinguish targets that are moving and getting
close to own ship. Requires one of the following radar sensors: DRS4D-NXT, DRS6A-
NXT, DRS12A-NXT or DRS25A-NXT. Radar Adjust (Gain, Sea, Rain) and Auto Sea
Mode cannot be adjusted when the Target Analyzer is active.
Note: When the radial component of target velocity (see below for description) is 50
kn or higher, the target may be painted in a wrong color. For example, an approaching
target whose speed is 50 kn or higher should be painted in red, but is painted in green.
Radial component of target velocity: The target velocity can be separated into two
components, the radial and transverse components, as in the figure below. The radar
is only able to sense the motion directly along the radial, either towards or away from
the radar, because the transverse component has no effect on the phase of the return-
ing electromagnetic wave.
Radar
Total
velocity
Transverse
component
Radial component
Radial
Radar measures the
radial component of
velocity only

Furuno TZT2BB Specifications

General

Brand	Furuno
Model	TZT2BB
Category	Monitor
Language	English