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INSTRUCTION MANUAL
GP450X
INstallatIoN
INstallING thE dIsPlay uNIt
mounting considerations
We recommend spending a little time selecting the best location
for your
GP450X
. The mounting bracket can be rotated to
allow the unit to be mounted above, below or behind the unit,
enabling it to be installed in a wide range of locations . The unit
can also be flush mounted using the four threaded inserts in the
rear of the case . Refer to the drawings below .
When choosing a mounting location, please keep in mind the
following points:
• Locate the unit away from exhaust pipes and vents.
• Mount the unit where it is well ventilated.
• Select a location where shock and vibration are minimal.
• Avoid locations which generate electromagnetic fields such
as a motors or generators .
• Allow sufficient space at the sides and rear of the unit and
leave sufficient slack in cables, to facilitate maintenance
and servicing .
• Observe the compass safe distance (as noted on the
specifications page) to prevent interference to a
magnetic compass .
desktop and overhead mounting
flush mounting
To flush mount the GP450X, first select a suitable panel
location . Ensure there is at least 100 mm of clearance behind
the panel to allow for the depth of the unit and the fitment of
cables etc . You will also need rear access to install the mounting
screws from behind the panel .
Use the template to mark up the panel . Take care to ensure your
measurements are correct, then cut the hole . Mark the location
of the four mounting holes in the corners and drill using a 3 mm
drill bit .
Place the GP450X unit in the hole and fix using four M3
brass or stainless steel bolts of the correct length . Refer to the
diagrams for details .
Important:
When determining the length of the mounting
bolts, take care to ensure the thread extends
no more than
5 mm
into the case otherwise damage to the case may occur .
The correct length should be determined by taking the thickness
of the panel you are mounting to and adding 5 mm as shown in
the diagram (e .g . if the panel is 10 mm thick, your bolts should
be no more than 15 mm long . If in doubt pass the bolts through
the holes in the panel and measure the extended length . If it
exceeds 5mm your bolts are too long and you should cut them
to the correct length before use .
INstallatIoN of aNtENNa uNIt
mounting the antenna
Mount the antenna in a location that has an unobstructed
view of the sky . Avoid locations that are near obstacles such as
masts, cabin, antennas or other equipment that might ‘shade’
the GPS antenna and restrict its visibility to the satellites . For
yacht installations avoid mounting the antenna high up on the
mast to avoid effects caused by movement of the mast when
heeling or changing tack .
The antenna unit is fitted with a standard 25 mm 14 TPI
mounting thread allowing it to be installed onto one of a range
of threaded fittings available from your local marine shop . These
provide mounting options for masts, bow rails or flat surfaces .
Ensure the antenna is mounted in an upright position in a
location that will minimise exposure to interference from objects
and water spray . Do not shorten the antenna cable .
If you have a Radar unit installed, choose a location out of the
radar beam . The radar beam may affect the reception of the GPS
signal . The location should also be well away from VHF/UHF
marine radio antennas . A GPS receiver may receive interference
from
vhf/uhf
transmissions .
If the antenna cable is to be passed through a hole which is not
large enough to pass the RF connector, you may unfasten the
connector with a needle nose pliers and 3/8-inch open ended
Spanner . After running the cable through the hole refit the
connector as shown below .
Wiring
The illustration below shows where to connect cables on the
rear of the display unit .
GrouNdING
External equipment
Many modern electronic marine devices contain a
microprocessor which can radiate small amounts of very
low level electronic noise . This can sometimes be heard as
interference on other nearby radio equipment, particularly radio
receivers . If you are experiencing this, you can reduce its affect
by grounding your
GP450X
using the wing nut fixture on the
rear panel . Connect a length of wire from this wing nut to a
ground point on your vessel . The ground wire should be kept as
short as possible .
Note:
Although the signal ground and frame ground are
separated, the power line is not isolated . Therefore, if your
vessel uses a positive ground installation do not connect the
Upright Mounting Overhead Mounting
Wall or Panel
how to assemble the RF Connector
Wiring Diagram
Nut
Spring Washer Gasket
Sheild
Pin
Connector
5mm Max
GP450X
M3 Bolt
Washer
Panel
