FIG 1b
FIG 1c
FIG 1a
NASA MARINE YACHT REPEATER
INTRODUCTION.
The NASA Marine Yacht Repeater displays essential navigation information from
a range of NMEA-0183 enabled devices. The large LCD display is easy to read at
a distance and over a wide viewing angle. For night viewing the characters glow
red on a black background producing a very sharp image without compromising
the crew's night vision.
Selection of data and back-light intensity are performed using a waterproof
wireless remote control unit. The weatherproof display is designed to mount on a
mast or other structure on a vessel and connects, via a three way screened cable,
to the data control box which is sited below deck. The data control box connects
to the vessel's 12 volt supply and has inputs for up to six NMEA instruments.
INSTALLATION.
After selecting a position where the display can be easily seen, the unit is
attached to the mast by means of two stainless steel mounting brackets. The
brackets can be shaped as required before being screwed to the rear of the
instrument with the six M4 stainless screws.
For a wide mast the brackets should be fitted as shown in Fig 1a and for a
narrower mast fitted as in Fig 1b. To fit to a bulkhead the brackets can be shaped
as Fig 1c.
Do not attempt to bend the brackets using the instrument as a lever but fully
shape the bracket before attaching the display. When attaching the brackets to
the mast be sure to use appropriate screws or rivets that do not foul other mast
hardware. It is recommended that a sealant is used between the brackets and
mast to prevent corrosion.
Run the cable down the mast and through a waterproof gland to the data control
box. The data control box is not waterproof and must be mounted in a position
that is dry at all times.
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