B&G H1000 NMEA Interface - Manual (Page 4)

system connections
connections
System components share data together via a common Fastnet
2
databus and are supplied with bayonet connectors for ease of
installation. A selection of cable lengths are available with options for
straight and right angle connectors to suit most requirements.
To prevent the occurrence of voltage drops on larger systems, the
power supply to the system should either be placed mid-way or at both
ends of the Fastnet
2 databus. To connect power to the mid-point of the
system, it is recommended that the 4-Way Hub be used. The 4-Way
Hub offers two advantages. The first advantage is that it offers a
convenient entry point for power onto the system. The second
advantage is that it conveniently allows the system to be branched to
reduce the overall length of the system. The correct selection of
Fastnet
2 cable will negate the need for any plugs to be removed from
the system and ensure years of faultless operation.
NMEA interface
The National Marine Electronics Association (NMEA) is an organisation that has defined a number of standard
specifications for the interconnection of marine electronic instruments. These standards specify the electrical
signals and the format of the data that is transferred. This allows equipment such as the h1000 to communicate
with other manufacturers’ equipment.
The Universal Interface is an NMEA interface specifically designed to allow the h1000 system to “talk” with other
manufacturers’ equipment. The most likely devices that will be connected to the Universal Interface are position
fixers such as GPS’s and Chart Plotters. The connection of navigational data to the h1000 Instrument allows this
data to be displayed on the system and creates new calculated functions such as tide rate and direction.
The Universal Interface has one NMEA Input Port (receive) and one NMEA Output Port (transmit) and is
designed to comply with the latest NMEA 0183 standards. The Universal Interface also contains the connections
for an external alarm output. The individual NMEA sentences may be ‘Enabled’* or ‘Disabled’* as required from
the ‘Remote unit setup’ options in the ‘System’ menu of any h1000 Digital display connected to the system.
*Minimum software required: h1000-DSP – r2.05
h1000-UNI – r2.04
12V Power
Cable
HUB
Fastnet 2
Cable
Fastnet 2
Cable
Fastnet 2
Cable