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Chapter 2
Installing the Subscriber Station
from radio frequency base stations, as defined in
Engineering_Technology/Documents/bulletins/oet65/oet65.pdf]. The emitted radiation should be as
little as possible. To achieve minimum RF exposure, install the subscriber station when it is configured
not to transmit and set it to operational mode remotely, rather than having a technician enable
transmission on-site. For maintenance of the subscriber station or other operations which require RF
exposure, the exposure should be minimized in time and according to the regulations set forth by the
country of installation or the Federal Communications Commission (FCC).
WARNING!
The subscriber station must be placed at a distance of at least 40 cm (16 in) from all persons during
normal operation. The antennas used for this product must not be located or operating in conjunction
with any other antenna or transmitter, except in accordance with FCC multi-transmitter evaluation
procedures.
IMPORTANT!
During antenna installation, observe the following:
• Always install the antenna at least 40 cm (16 in) from people and public areas.
• Antenna must be in a fixed position.
• Make sure the front of the antenna is always facing the base station. In some conditions, such as
when the line of sight to the subscriber station is impeded, better reception may be achieved using
a reflected signal. In this case, direct the antenna towards the reflecting object, rather than towards
the base station.
• In some cases, the antenna may need to be tilted to make sure the level at which the subscriber
station receives transmissions from the base station (and vice versa) is not too high. When only the
last RSSI LED is on, this indicates saturation and the received signal level is too high. This must be
avoided, preferably by tilting the antenna upwards. As a general rule, if the subscriber station is
located at a distance of less than 300 m (984 ft) from the base station, it is recommended to tilt the
antenna upwards by approximately 10 to 15°.
• After the antenna is installed, do not change the antenna position.
1.
Mount the antenna to a pole or wall in an area that provides good signal coverage and is away from any
signal noise emanating from other communications equipment.
2.
Position the antenna towards the general direction of the designated base station.
WARNING!
Fire hazard – risk of serious personal injury and/or damage to equipment. To reduce the risk of fire,
use only 26 AWG or larger telecommunication line cord between indoor and outdoor devices.
3.
Using shielded coaxial cables, connect the antenna to the lightning protector. Make sure the cables are
routed away from any noise sources, such as Switch-Mode Power Supplies (SMPS).
14
FCC OET Bulletin 65
[http://transition.fcc.gov/Bureaus/
RUGGEDCOM WIN5158
Installation Guide
Installing the Antennas
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