Furuno TZTL12F Operator's Manual page 145

6. RADAR
This mode has three sets of preset picture adjustment settings, low, medium, and
high. The high setting provides the greatest degree of sensitivity, which makes it suit-
able for long range detection of birds.
Turn off the interference rejector off to make detection of weak echoes easier. Turn on
the interference rejector during a voyage.
To activate or deactivate the Bird mode, do as follows.
1. Open the pop-up menu. Select [Bird Mode].
2. Select the sensitivity level among [Low], [Medium], and [High].
To deactivate the Bird mode, select [Off].
Usage precautions
• The Bird mode is available with the radar sensor DRS2D/4D/4A/6A/12A/25A, soft-
ware version 01.18 or after. The Bird mode is also available with the DRS6A X-
Class radar sensor. The radar sensor DRS4DL does not support the 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.
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