User's Manual

Powerwave Fiber Optics
VM100 56/EN – User’s Manual Rev. P1A9-Draft 2004-11 1 - 1
1. Safety
In this chapter, the word ’repeater’ includes all Powerwave repeating units, such as
repeaters, hubs and radio heads.
It is necessary that any personnel involved in installation, operation or service of units
included in an Powerwave repeater system understand and follow the below points.
• The Powerwave repeaters are designed to receive and amplify signals from one or
more base stations and retransmit the signals to one or more mobile stations. And, also
to act the other way round, that is to receive signals from one or more mobile stations,
amplify and retransmit the signals to the base stations. Powerwave repeater systems
must be used exclusively for this purpose and nothing else.
• Units supplied from the mains must be connected to grounded outlets and in
conformity with the local prescriptions.
• Power supply units supplied from the mains contain dangerous voltage that can cause
electric shock. Disconnect the mains prior to any work in such a unit. Local
regulations are to be followed when servicing such units.
Authorized service personnel only are allowed to service units while the mains is
connected.
• All RF transmitting units, including repeaters, will generate radio signals and thereby
give rise to electromagnetic fields that may be hazardous to the health of any person
who is extensively exposed close to an antenna.
See the Human Exposure of RF Radiation section on page 1-3.
Beryllium oxide
• Beryllium oxide (BeO) may be contained in power devices, for instance in dummy
loads in directional couplers (DCC), in combiner units (CMB), and in attenuators on
the FON board. Beryllium oxide is poisonous if present as dust or smoke that can be
inhaled.
Do not file, grind, machine, or treat these parts with acid.
Hydrogen fluoride
• Coaxial cables used in many Powerwave systems have the insulation made of PTFE,
polytetrafluoro ethylene, that gives off small amounts of hydrogen fluoride when
heated. Hydrogen fluoride is poisonous. Do not use heating tools when stripping off
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.