Simrad Maris ECDIS900, Руководство по установке

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Page 22
MARIS ECDIS900 Installation Manual
Other items can be powered from the same source or from elsewhere.
Do NOT power the equipment from the Lighting Switchboard as it may not be
connected to the emergency diesel generator.
Powering from the Lighting Switchboard may lead the class society or the flag state to
reject the installation and deny the final approval.
UPS
The ECDIS900 is certified to run without UPS as the it will start up from where it left off.
Nevertheless, it will greatly improve stability and protect against brownouts and noise to add
an UPS. The UPS used must be an approved type. Read more about UPS in the Annex.
DC P
OWER
NMEA buffers must be powered from the radio battery or the emergency battery. In other
words, when connecting a GPS buffer, take the power from the GPS source. The buffers
are protected by internal auto resettable fuses.
AC/DC power supplies connected to the nearest wall outlet are not accepted. Use the
power strips from the installation kit and take the power from the same source as for
the ECDIS900 computer.
B
UFFERS AND
EPFS
Electronic Position Fixing System (EPFS).
An EPFS can be any navigation system, receiver or integrated navigation system, having an
IEC 61162 NMEA interface. According to the Safety of Life at Sea (SOLAS), the navigation
system must meet IMO performance standards, being certified and Wheel Mark approved.
In practice, most EPFS systems are currently GPS. Other candidates are the Russian
GLONASS and the European Galileo.
The majority of ships have two or more navigational GPS and they are typically heavily
overloaded. Add buffers to GPS, gyro and log.
Connect GPS1 to the monitoring station and GPS2 to the planning station.
The GPS messages usually have the NMEA0183 format. It is advisable to change the
output format to IEC and enable the IMO recommended sentences GGA, GLL, GNS,
DTM, ZDA and VTG. These sentences are required by the ECDIS as a minimum
configuration. Disable other sentences to reduce traffic load on the output port.
The GPS must be capable of transmitting the above-mentioned sentences and
must be Wheel Mark approved. Discard the GPS and install a new one if these
requirements are not met.