FleetData FD420-GSM Manual de início rápido - Página 3
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The antenna plane should be parallel to the geographic horizon and must have a full view of the
sky ensuring a direct line-of-sight with as many visible satellites as possible.
DO...
do
...
mount the GPS antenna where it will see the most sky.
do
...
mount the antenna horizontal.
do
...
mount the antenna outside and on the vehicles roof where possible.
do
...
mount the antenna in an area with a good ground plane. A suitable ground
plane should provide for at least 15cm of metal in all directions.
DO NOT...
do no
t
...
mount the GPS antenna where it will be on an angle. It should be mounted
horizontal to see as much of the sky as possible.
do no
t
...
kink or tightly wrap excess cable or
do no
t
...
pinch or trap cable when refitting trim to the vehicle.
do no
t
...
over tighten the GPS antenna. Tightening by hand is normally adequate.
do no
t
...
place the antenna close to other electronic equipment such as engine
management and control systems.
do no
t
...
place or mount the antenna where it will be covered or blocked by metal.
do no
t
...
mount antennas where they are close to people (> 30cms).
ADDITONAL NOTES...
...
Fibreglass airfoils on trucks and Taxis can attenuate the GPS signal.
...
Some automotive windscreens have a metallic coating. GPS reception in such cars
may not be possible. Sometimes there is a small section spared for GPS and mobile
phone antennas behind the rear view mirror.
EXAMPLES OF ANTENNA PLACEMENT
Recommended Antenna Placement
This placement gives a clear view of the sky and
provides the antenna with a good ground plane.
© Copyright 2006 FleetData Pty Ltd. All Right Reserved.
FleetData Pty Ltd
P.O. Box 886 Mt Ommaney QLD, Australia 4074
Telephone: +61-7-3712-0444
Email: [email protected]
Suitable but not ideal Antenna Placement
Performance may be degraded.
Window and roof reduce GPS signal and
obstruct the sky view.
Fibreglass airfoil attenuates the GPS signal.
ABN 85 084 389 257.
Fax: +61-7-3712-0555
Website: fleetdata.com.au
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