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34
The unit is internally protected
from accidental reverse polarity.
Reversing the power leads will
not damage the unit, it will
simply not turn on.
CAUTION
Be careful not to injure
your finger or hand by
the waterproof cap
mounting groove when
installing the power cable.
Grounding the Display Unit
One very important requirement in installation of shipboard electronics is to
obtain the cleanest, noise-free environment possible so each piece of electronic
equipment can work to its best performance levels. This requirement is
accomplished by assuring a proper connection from each equipment to the ship's
RF ground system. The ground provides a drain for shipboard noise transmission
and pickup.
A separate ground wire of # 10 or # 12 AWG (# 10 recommended) should be
connected from the ground terminal on the rear of the unit to the nearest
connection point of the ship's ground system.
Normally, on a steel hull boat, a good clean connection to the hull provides a
sufficient ground. On a fiberglass or wood hull, connection to a ground plate or
to the engine block and other bonded groundwork should be acceptable.
10 amp fuse
BLACK
−
RED
+
Figure 2-8
Connect to GPS
compass or
magnetic compass
Scanner
(NKE-1065)
Connector to
GPS/DGPS
Sensor
JRC type GPS112 or
DGPS212
Connect to
NMEA0183
Input/Output
Ship's Ground
System
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