Mounting Of Optional Equipment; Ac-Dc Power Supply Unit; Preamp Unit Fax-5 - Furuno FS-1570 Installation Manual

1.6 Mounting of Optional Equipment

1.6.1

AC-DC power supply unit

Mounting considerations
When selecting a mounting location, keep in mind the following points.
•
Select a location which provides adequate ventilation.
•
The location should be clean and dry.
•
The mounting location must be able to support the weight of the unit (PR-300:14.5 kg,
PR-850A: 35 kg) under the continued conditions of vibration normally encountered aboard
the vessel.
•
A magnetic compass will be affected if the power supply unit is placed too close to it.
Observe the following compass safe distances to prevent disturbance to the magnetic
compass: For PR-300, standard: 0.90 m, steering: 0.70 m, for PR-850A, standard: 1.00 m,
steering: 0.70 m.
Mounting
Refer to the outline drawings at the back of this manual.
1.6.2

Preamp unit FAX-5

The body of preamp unit can be mounted two ways:
1. The bottom of the preamp unit is designed to accept a threaded extension mast of 1 inch
diameter. The pitch of the thread should be 14 threads per inch. To prevent undue flexing of
the mast in heavy winds, the mast should not be longer than 5 feet (1.5 m).
2. The side of the preamp unit has a molded channel so that it may be mounted directly to a
stub mast with two stainless steel hose clamps. Hose clamps must be arranged locally.
Screw the 2.6 m whip antenna (option) tightly onto the preamp unit and waterproof the junction
and other exposed metallic parts with sealing compound (silicone rubber, putty, etc.)
Note that a wire antenna of 2 to 3 meters length may be used instead of the whip antenna.
Note: The preamp unit requires 9 VDC power. See paragraph 3.5 for how to provide power to
the preamp unit.
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