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Wiring | HDS Gen2 Touch Installation Manual
NMEA 2000 device connection
All HDS Gen2 Touch models are equiped with a NMEA 2000 port,
which allows the receiving and sharing of a multitude of data from
various sources.
Essential network information
• A NMEA 2000 network consists of a linear “backbone” from which
“drop cables” connect to NMEA 2000 devices
• NMEA 2000 is a powered network.
• NMEA 2000 cables used for Lowrance products are of the ‘micro-c’
style, which is a cable/connector specication approved for use in
NMEA 2000 certied networks.
• A single drop cable has a maximum length of 6 m (20 ft). The total
length of all drop cables combined should not exceed 78m (256 ft)
• The backbone has a maximum cable length of 100m (328ft). The
maximum cable length between any two devices on the network
is also 100 m (328 ft) - this is taking in to account device drop cable
length.
• A NMEA 2000 network needs to have a terminator at each end of
the backbone.
Planning and installing a network backbone
The NMEA 2000 backbone needs to run between the locations of all
products you want to install, typically in a bow to stern layout. Route
the backbone so that drop cables to devices do not exceed 6m
length. Choose from the following components to make up your
NMEA 2000 backbone:
• Micro-C cables: 2’ (0.61m), 6’ (1.82m), 15’ (4.55m), 25’ (7.58m)
• T-connector. Use at locations where you want to connect a device
by drop cable
• Micro-C male and Micro-C female to SimNet adaptor cables for
connecting to SimNet bus, or adding devices tted with a SimNet
connector to a Micro-C network.
¼ Note: If using a wind sensor, plan to connect this to one end of the
backbone with the termination resistor at the mast head.
Power the network
A NMEA 2000 network requires its own 12 V DC power supply. The
Lowrance NMEA 2000 power cable is pre tted with an inline fuse
holder and 3 amp fuse.