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Chapter 6. Installation
6.1. Overview
(1)
Proper installation of Radar ensures the performance and safety of it during operation and facilitates the
maintenance and repair of it, you should carefully pay attention to the proper of installation accoding to the
instruction.
(2) Antenna should be installed as high as possible after considering its weight.
(3) Indicator should be installed inside Wheel House in order make observation efficiently.
(4) 15m standard cable should be used between Antenna and Indicator.
6.2. Installation of Antenna
6.2.1. Selection of the installation place
6.2.2. How to install Antenna
(1) Take a caution when antenna is installed on High Speed Vessel
Generally the head of High Speed Vessel will be up float when ship is in full speed. Due to
this, in case the Antenna being installed in even level and trim (angle of ship’s stem while running) being
over 1/2 of vertical beam width (θ), the Echo from this target is hardly displayed as image because the front
of the ship is off the beam range that causes the electric wave reflecting from the target becomes weak. In
opposition, at the stern of the ship the wave reflecting from the sea surface becomes strong. It will not
affect the image at the port and starboard side of the ship.
Therefore, in case the ship that of trim is over 1/2 of vertical beam width (θ), it is recommended to install
the Antenna in slant toward the ship’s stem.
(2) Caution while the Antenna is installed in Yaucht
It is apt to be sliding in slant toward the counter windy side while the yaucht is navigating when the wind
is blowing to the extent. In case the slanted angle being over 1/2 of beam width, the electric wave reflecting
from the target becomes weak since the ship structure is off the range of beam and Echo from this target is
hardly displayed as an image. In opposiiton, the opposite side of the wind, surface reflecting becomes strong
since the electric wave contacting sea surface becomes strong. It will hardly affect the images of fore and
after side of ship.
Therefore, in case Yaucht that of slant is over 1/2 of vertical beam width (θ), it is recommended to install the
mounting bracket in order that antenna can be slanted in right and left side according to the angle of slant.
CAUTION
※
The specialist from Head Office or Local distributor should carry out
installation work.
※
Installation works carried out by unauthorized person can cause out of
order, performance failure Electric shock.
CAUTION
※
The place where there is no big obstructions on the level of ship’s fore
and afterside.
※
If there is a obstacle on the same level of Antenna, it may cause a
virtual image.
※
Especially when the virtural image appears on ship’s fore and after side,
it will be difficult to observe and hardly forecast the danger.
※
The place where there is a near Funnel can cause the decrease in
performance, the defect dueto haet, therefore it should be installed
away from such Funnel as far as possible.
※
Please keep in mind that Direction finding Antenna and VHF antenna
should be far away from Radar Antenna.
(Please avoid the situation from tying up said cables with Radar one)
