Furuno gp-31 Manuel D’Utilisation

Install the antenna unit referring to the an-
tenna installation diagram at the end of this
manual. When selecting a mounting loca-
tion for the antenna unit, keep in mind the
following points:

• Do not shorten the antenna cable.

• Select a location out of the radar beam.

The radar beam will obstruct or prevent
reception of the GPS signal.

• The location should be well away from a

VHF/UHF antenna. A GPS receiver is in-
terfered by a harmonic wave of a VHF/
UHF antenna.

• There should be no interfering object

within the line-of-sight to the satellites.
Objects within line-of-sight to a satellite,
for example, a mast, may block recep-
tion or prolong acquisition time.

• Mount the antenna unit as high as pos-

sible. Mounting the antenna unit as high
as possible keeps it free of interfering
objects and water spray, which can in-
terrupt reception of GPS satellite signal
if the water freezes.

• The length of the whip antenna for the

GPA-018 (for GP-36) should be no
longer than 1.2 meter to prevent antenna
damage. Do not use a 2.5 meter whip
antenna.

• If the antenna cable is to be passed

through a hole which is not large enough
to pass the connector, you may unfas-
ten the connector with a needle nose
pliers and 3/8-inch open-end wrench.
Refasten it as shown in Figure 9-2, after
running the cable through the hole.

Center pin (soldered)

Clamp nut

Connector shell

Gasket (reddish brown)

Washer

Shield

The display unit can be installed on a table-
top, on the overhead, or in a panel (optional
flush mounting kit required). Refer to the
outline drawings at the end of this manual
for installation instructions. When selecting
a mounting location, keep in mind the fol-
lowing points:

• Locate the unit away from exhaust pipes

and vents.

• The mounting location should be well

ventilated.

• Mount the unit where shock and vibra-

tion are minimal.

• Locate the unit away from equipment

which generates electromagnetic fields
such as a motor or generator.

• Allow sufficient maintenance space at

the sides and rear of the unit and leave
sufficient slack in cables, to facilitate
maintenance and servicing.

• Observe the following compass safe dis-

tances to prevent deviation of a magnetic
compass. Standard compass, 0.5 m,
Steering compass, 0.3 m.

Tabletop

Overhead

There are two types of flush mounting kits.
For details, see the outline drawings at the
end of this manual for details.