JRC JHS-183, Installation Manual

Page: 43 / 102

PREPARATION FOR INSTALLATION
2-9
NTE-183 AIS transponder
・
Standard type : 0.5m
・
Steering type : 0.2m
NCM-983 AIS controller
・ Standard type : 0.5m
・
Steering type : 0.3m
NQE-5183 Connection box
・
Standard type : 0.7m
・ Steering type : 0.5m
NBD-577C Power supply unit
・
Standard type : 0.8m
・ Steering type : 0.5m
2.3 Installation planning
In order to make the installation plan, confirm the composition of AIS system including external
equipments that is mentioned previously. Refer to the connection confirmation list and check the
external connections. On existing ships, there may be no serial data signals from the gyrocompass or
no reserved signal, therefore confirm the signal output from the gyrocompass and plan to connect to
the AIS by using a signal converter if necessary. Other external equipments (sensor) are similar. For
the connection with RADAR, ECDIS, RADAR, ECDIS confirm that the equipment has the ability to
interface with the AIS.
・ GYRO: model name, signal format, open terminals for repeater.
・
GPS: model name, signal format, open terminals
・
LOG: model name, signal format, open terminals
(depending on the condition, no need to connect)
・ ROT: model name, signal format, open terminal
(depending on the condition no need to connect)
・
RADAR, ECDIS: model name (optional connection)
After the confirmation of equipment composition for AIS, refer to the equipment composition and
equipments as shown at 2.1(1), and then make an installation plan, especially concerning the
transponder position. It is necessary to check the distance between VHF antenna (TRX), Inmarsat
antenna, RADAR antenna and MF/HF antenna (TX). To prevent interference, refer to the IMO
SN/Circ.227 document, AIS Installation Guidelines". In case AIS transponder is installed at a handrail
of compass deck, it is necessary to consider the compass safe distance (Refer to ISO-694). The pole
diameter for AIS transponder installation is recommended, refer to “page 3-3” (60.5 φ
～
101.6 φ ). In
order to install the connection box, there is a space for wiring or maintenance and the position may be
limited. For installation, these types are conceivable as follows, the space under the cheat table in the
deck, the inside space of central group panel (rear group panel depending on the ship), a type that is
embedded in the wall of the deck (necessary to process by makeup panel) and so on.
After the decision the arrangement of AIS controller and connection box, the wiring route should be
considered. The wiring route is considered “2.1.(2)”. The cabling is normally set in the ceiling of the
deck and under the rear deck, so it is impossible to run the cable vertically. To run the cable vertically,
it is necessary to pass through the wall, but there is a window at the surface wall and it split the wall.
Except the special case (e.g. surface window cover is used.), it is hard to wire in the surface wall of
the deck. Therefore another route to wire vertically is rear wall or horizontal wall of the deck. When
there are interior and installation is planed, it is necessary to make a total plan (e.g. where is the best
space to install, how to reduce the incidental work.)
The above content is shown at next page “figure-1”.
Compass safety distance