1-8

Wiring

All wiring are terminated at the rear of the display unit.
Power cable
Connect the power cable to the power connector. Connect the leads
to the battery (12 or 24 VDC); white to plus(+) terminal and black
to minus(-) terminal.
Cable connector
Power cable
w/fuse (3A)
Lead wire
White
Black
BATTERY
Figure 1-10 Connecting the power cable to the battery
Antenna unit
Connect the antenna unit cable to the GPS ANT connector.
Transducer
Connect the transducer cable to the XDR connector.
Ground
The display unit
contains several
CPUs. While they
are operating, they
radiate noise,
which can interfere
with radio equip-
ment. Ground the
unit to prevent interference. The grounding wire should be 1.25 sq
or larger and as short as possible. Connect the grounding wire to
ship's ground by silver-alloy brazing. On a fiberglass boat, it is
best to install a ground plate that measures about 20 cm by 30 cm
on the outside of the hull bottom to provide a ground point. If this
is not practical, the engine block can be used.
Ground the equipment to
prevent electrical shock
and mutual interference.
CAUTION