Furuno FAR-3230SW-BB, Installation Manual

Page: 16 / 169

1. INSTALLATION
1-2
• Install the antenna unit away from interfer-
ing high-power energy sources and TX ra-
dio antennas.
• Keep the lower edge of the antenna unit
above the safety rail by at least 500 mm.
• Install two antenna units as shown in the
right figure.
• No funnel, mast or derrick shall be within
the vertical beamwidth of the antenna unit
in the bow direction, especially zero degree
±5°, to prevent blind sectors and false ech-
oes on the radar picture.
• It is rarely possible to place the antenna
unit where a completely clear view in all directions is available. Therefore, deter-
mine the angular width and relative bearing of any shadow sectors for their influ-
ence on the radar at the first opportunity after fitting.
• Locate an EPFS antenna clear of the antenna unit to prevent interference to the
EPFS. A separation of more than two meters is recommended.
• A magnetic compass will be affected if the antenna unit is placed too close to the
compass. Observe the compass safe distances on page ii to prevent interference
to a magnetic compass.
• Do not paint the radiator aperture, to ensure proper emission of the radar waves.
• Ground the unit with the ground wire (sup-
plied).
• An antenna switch is provided on the chassis
of the X-band antenna to stop the antenna.
Make sure the mounting location provides
easy access to the switch.
• Deposits and fumes from a funnel or other ex-
haust vent can affect the aerial performance and hot gases may distort the radiator
portion. Do not install the antenna unit where the temperature is more than 55°C.
• Leave sufficient space around the unit for maintenance and servicing. See the an-
tenna unit outline drawing for recommended maintenance space.
• If it is necessary to lay
down the radiator before
fastening it to the antenna
unit, lay it down with the
waveguide up, to prevent
damage to the cylinder that
surrounds the waveguide.
Note: For more information,
please refer to IMO SN/
Circ.271 “Guidelines for the installation of shipborne radar equipment.”
more than 20°
more than 1 m
Lay down radiator
with waveguide
facing upward.
Waveguide Waveguide
Cylinder Cylinder