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

CAUTION

Ground the equipment to prevent electrical shock and mutual interference.

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.

Also, the antenna unit GPA-018S type antenna units should be grounded.

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 10m long. For extension, in case of the GPA-016, GPA- 018S, GPA-019S an antenna cable set of 15m, 30m or 50m is available. Exten- sion cable cannot be used with the GPA-017 or GPA-018.

◆Extension cable line-up (in case of 30 m or 50 m)

Fabricate the end of the antenna cable and attach the co- axial connector. Details are shown on next page.

Antenna Unit
GPA-016
GPA-018S	Conversion	: Connector
GPA-019S
	Cable Assy.

1 m

Antenna Cable			To display unit
30 m or 50 m		1 m
	Fabricate locally. (See next page.)

Figure 2-3 Cable extension

◆Waterproofing connector

Wrap connector with vulcanizing tape and then vinyl tape.

Bind the tape end with cable-tie.

Figure 2-4 Waterproofing connector

2-2