Furuno GP-1850WD installation manual Antenna unit, Ground, Extending antenna cable length

2. WIRING

Antenna unit

Connect the antenna cable to the ANT 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.

CAUTION

Ground the equipment to prevent electrical shock and mutual interference.

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 15m, 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

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