Firetide HotPort 6101 Manuale di installazione dell'hardware - Pagina 9
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Stampa la paginaMounting the Antennas
Once you determine which RF band to use, you can order spectrum-
specific high-gain antennas from Firetide.
The following material provides some general guideleines for
mounting antennas. Refer to the information which came with your
antenna for detailed mounting instructions.
Mounting Guidelines
•
For best results, the mounting location should be selected to en-
able maximum performance of the antennas. Generally speak-
ing, a higher antenna will have better overall range and cover-
age.
•
Most omnidirectional antennas can be mounted directly to the
HotPort node, or directly to a pole. Larger or heavier antennas
should be mounted to the pole.
•
Position the antennas on the pole above the HotPort enclosure.
•
The antennas should not be within 3 ft (0.9 m) of any metal bar
or structure, and ideally not within 3 ft (0.9 m) of any concrete
or stone structure. In general, try to locate the antennas as far
from such objects as practicable.
•
HotPorts should not be placed where trees or foliage are in the
line-of-sight path between any pair of units.
•
Shorter antenna cables give better performance. Plan your in-
stallation to minimize antenna cable length. However, do not
attempt to splice or shorten the antenna cable. If a longer coax
cable is required, the system requires a 50 ohm cable.
February 2007
•
Do not mount the HotPort antennas within 3 ft (0.9 m) of other
antennas. If you do, interference may occur.
•
Do not mount the antenna pole near power lines.
•
If a longer coax cable is required, contact your local distributor
to obtain a 50 ohm cable with the correct connectors. In order to
maintain proper system operations, there should be more than 8
dB of insertion loss between the HotPort node and the antenna.
Insertion loss is defined as the loss of signal strength when a
cable is inserted between the transmitter and the receiver. In-
sertion loss is measured in dB.
•
When mounting next to an access point, mount the access point
lower on the pole and at least 3 ft (0.9 m) from the antennas. You
can also mount the access point on a horizontal bar to achieve
the required 3 foot separation.
Wall Mounting
•
Position the antennas above or to the side of the HotPort enclo-
sure to permit easy attachment of the antenna to the connector
at the bottom of the enclosure.
•
RF signals can be attenuated by a wall or the composition of a
building. When utilizing omni-directional antennas, connecting
the antennas to a wall may limit the amount of coverage.
Firetide Instant Mesh Networks