Garmin 225 Manuale Proprietario
To begin installation, you’ll need to select a suitable mounting position for
the antenna(s) and the GPSMAP unit. Once you’ve identified the best mounting
locations for your application, install the antenna(s) and its cable(s) first, then
the unit and power/data cable.
Mounting the antenna(s)
Mounting the antenna(s)
The GPS antenna should be mounted in a location that has a clear,
unobstructed view of the sky in all directions to ensure the best reception in all
conditions. Avoid mounting the antenna where it will be shaded by the boat’s
superstructure, a radome antenna, or mast.
The beacon antenna provides more flexibility in mounting locations.
Mounting near objects which partially shade its field of view is not a critical
concern, however large metal objects may create enough obstruction to degrade
reception and performance. As a general rule, mount the antenna at least 3 feet.
from all other antennas and the vessel’s alternator/ignition system components. A
ground strap is attached to the antenna coupler, except on the GA 23 H-field
antenna. For proper operation, the ground strap must be connected to a vessel (earth)
ground. Do not ground the coupler to the electrical system.
GARMIN antennas screw directly onto any standard 1” x 14 thread antenna
mount. If you need to raise an antenna to avoid shading, try using a 1” x 14
thread extension mast available at most marine dealers.
To install the antenna(s):
1. Screw the antenna directly onto the 1” x 14 thread mount.
2. Route the cable to the mounting location of the display unit, using the appropri-
2. Route the cable to the mounting location of the display unit, using the appropri-
ate tie-wraps, escutcheon plates and sealant to secure the cable along the route
and through any bulkhead or deck.
and through any bulkhead or deck.
3. Once the GPSMAP unit has been installed, connect the cable to the antenna
connector on the back of the unit. Make sure that you turn the antenna 1/4 turn
clockwise to lock the cable into place. (For models purchased with built-in
DGPS, connect each antenna cable to the Antenna Combiner. Then use the sup-
plied short cable to connect the Antenna Combiner to the back of the unit.)
clockwise to lock the cable into place. (For models purchased with built-in
DGPS, connect each antenna cable to the Antenna Combiner. Then use the sup-
plied short cable to connect the Antenna Combiner to the back of the unit.)
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A
APPENDIX
Installation
CAUTION!
Cutting or modifying the antenna(s)
may result in undesired operation
of the GPS. If the standard cable is
not long enough for your applica-
tion, see your dealer for the proper
GARMIN cable extension. When in
doubt, seek the assistance of a
qualified installation technician.
may result in undesired operation
of the GPS. If the standard cable is
not long enough for your applica-
tion, see your dealer for the proper
GARMIN cable extension. When in
doubt, seek the assistance of a
qualified installation technician.
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