User Manual

AXELL MBF-40 AMERICAS REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd Doc. No. 00071UM Rev. 3.2 VII
General Safety Warnings Concerning Use of
System
Caution labels!
Throughout this manual, there are "Caution" warnings.
"Caution" calls attention to a procedure or practice, which, if
ignored, may result in injury or damage to the system,
system component or even the user. Do not perform any
procedure preceded by a "Caut
ion" until the described
conditions are fully understood and met.
Electrical Shock
Danger:
To prevent electrical shock when installing or
modifying the system power wiring, disconnect the wiring at
the power source before working with un insulated
wires or
terminals.
Caution: Safety to
personnel
Before installing or replacing any of the equipment, the entire
manual should be read and understood.
The user needs to supply the appropriate AC or DC power to
the repeater. Incorrect power settings can
damage the
repeater and may cause injury to the user.
Please be aware that the equipment may, during certain
conditions become very warm and can cause minor injuries if
handled without any protection, such as gloves.
Caution: RF Exposure
RF radiation, arising from transmitter outputs connected to
AWL’s equipment, must be considered a safety hazard.
This condition might only occur in the event of cable
disconnection, or because a ‘spare’ output has been left un-
terminated. Either of these conditions woul
d impair the
system’s efficiency. No investigation should be carried out
until all RF power sources have been removed. This would
always be a wise precaution, despite the severe mismatch
between the impedance of an N type connector at 50 ohm,
and that of free space at 377 ohm, which would severely
compromise the efficient radiation of RF power. Radio
frequency burns could also be a hazard, if any RF power
carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with
re
quirements (both local & statutory) regarding exposure of
personnel to RF radiation. When connected to an antenna, the
unit is capable of producing RF field strengths, which may
exceed guideline safe values especially if used with antennas
having appreciab
le gain. In this regard the use of directional
antennas with backscreens and a strict site rule that
personnel must remain behind the screen while the RF power
is on, is strongly recommended.
Where the equipment is used near power lines or in
association w
ith temporary masts not having lightning
protection, the use of a safety earth connected to the case-
earthing bolt is strongly advised.