User Manual
Axell Wireless Limited
Technical Literature
UHF Dual Band Line Amplifier
Document Number 55-227901HBK
Issue No. 4
Date 23/06/2014
Page 6 of 30
General Safety Warnings Concerning Use of This System
Always observe standard safety precautions during installation, operation and maintenance of this
product. Only a qualified and authorized personnel should carry out adjustment, maintenance or
repairs to the components of this equipment.
NOTE: Please refer to Axell Wireless for additional information and for requests for notifications to
authorities.
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
"Caution" until the described conditions are fully understood and met.
Danger:
Electrical Shock
This equipment can either be installed indoors or outdoors. When installed outdoors -
wet conditions increase the potential for receiving an electric shock when installing or
using electrically powered equipment. 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:
RF Exposure
RF radiation, (especially at UHF frequencies) 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 would 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 50Ω, and that of free space at 377Ω,
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!
Where the equipment is used near power lines or in association with temporary masts
not having lightning protection, the use of a safety earth connected to the case-earthing
bolt is strongly advised.
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 Line Amplifier.
Incorrect power settings can damage the Line Amplifier 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: Safety to
equipment
When installing, replacing or using this product, observe all safety precautions during
handling and operation. Failure to comply with the following general safety precautions
and with specific precautions described elsewhere in this manual violates the safety
standards of the design, manufacture, and intended use of this product.
Axell Wireless assumes no liability for the customer's failure to comply with these
precautions. This entire manual should be read and understood before operating or
maintaining the Line Amplifier.
Warning: Restricted
Access Location
Access to the Axell unit installation location is restricted to SERVICE PERSONNEL and
to USERS who have been instructed on the restrictions and the required precautions to
be taken.
Attention:
Electrostatic
Sensitivity
Observe electrostatic precautionary procedures.
ESD = Electrostatic Discharge Sensitive Device.
Semiconductor transmitters and receivers provide highly reliable performance when
operated in conformity with their intended design. However, a semiconductor may be
damaged by an electrostatic discharge inadvertently imposed by careless handling.
Static electricity can be conducted to the semiconductor chip from the centre pin of the
RF input connector, and through the AC connector pins. When unpacking and otherwise
handling the Line Amplifier, follow ESD precautionary procedures including use of
grounded wrist straps, grounded workbench surfaces, and grounded floor mats.