AR Standard Repeater Overview
1-2 044-05250 Rev B
coaxial cable insulation. No particular measures are to be taken in case of fire because
the emitted concentration of hydrogen fluoride is very low.
• A lithium battery is permanently mounted in repeater CU units, and in FON and OCM
units. Due to the risk of explosion, this battery must only be removed from the board by
an Powerwave authorized service technician.
• NiCd batteries are mounted on the FON unit. These batteries contain environmental
poisonous substances. If replaced, the old batteries should be taken care of as stated
in the local prescriptions.
• The FON unit contains a class IIIb laser transmitter that emits 2 – 4mW invisible laser
radiation during operation. Avoid direct exposure from unconnected laser transmitter or
fiber cord as follows:
– Do not power up the FON unit if a fiber cable is not attached to the fiber output UL
port, neither if a fiber cable is attached to the port but unattached in the other end.
– Never look in the end of a fiber cable. The 1310nm and 1550nm laser light is not
visible, so no signal identification can be made anyway. Use always an instrument,
such as a power meter to detect signaling.
– Never use any kind of magnifying devices that can focus the laser light to an
unaided eye.
Warning Signs
The following warning signs must be observed and be kept clean and readable. The warning
sign to the left is applied on boards and units which contain beryllium oxide parts. The warning
sign below is applied at the bottom, inside the cabinet, below the power supply unit.
Electrostatic Discharge (ESD)
ESD can severely damage essential parts of the equipment if not handled carefully. Parts on
printed circuit board assemblies (PCBA) as well as other parts in the equipment are sensitive
to ESD. Never touch the PCBA or uninsulated conductor surfaces unless absolutely
necessary.
If you must handle the PCBAs or uninsulated conductor surfaces, use ESD protective
equipment or first touch the chassis with your hand. Never let your clothes touch PCBAs or
uninsulated conductor surfaces and always store PCBAs in ESD-safe bags.
Overview
Figure 1-1 Powerwave AR Standard Repeater
Beryllium
oxide
hazard
BERYLLIUM OXIDE
(Toxic)
used in equipment
see instruction book
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