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2. WIRING
2-2
Antenna unit
Connect the antenna cable to the ANT connector.
Transducer
Connect the transducer cable to the XDR connector.
Water temperature/speed sensor
Connect the water temperature sensor (option) or water temperature/speed sensor (option)
to the TEMP/SPD connector.
Ground
The display unit contains several CPUs. While they are operating, they radiate noise, which
can interfere with radio equipment. 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. 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
Note: Use a “closed” lug to make the ground connection at the display unit. Do not use an
“open-type” lug (
).
Extending antenna cable length
The standard cable is 10 m long. For extension, in case of the GPA-019S or GPA-017S, an
antenna cable set of 15 m, 30 m or 50 m is available. Extension cable cannot be used with
the GPA-017 or GPA-019.
Cable length Necessary parts Code No.
15 m TNC-PS-3D-15 000-133-670
30 m CP20-01700 004-372-110
50 m CP20-01710 004-372-120