User's Manual

044-05251 Rev B vii
Preface
Safety
Any personnel involved in installation, operation, or service of units included in a Powerwave Distributed
Antenna System (DAS) must understand and follow the points below.
❑ Powerwave Nexus FTs are designed to receive and amplify signals from one or more
base stations a
nd 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 Nexus FT 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 presc
riptions.
❑ For outdoor use, the power cord should meet at least IP65 encapsulation requirements.
Do not turn the main
power on until you are ready to commission the Nexus FT.
❑ Power supply units supplied from the mains contain dangerous voltage that can cause
electric shoc
k. Disconnect the mains prior to any work in such a unit. Local regulations
are to be followed when servicing such units. Only authorized service personnel are
allowed to service units while the mains are connected.
❑ When opened, the Nexus FT cover must be secured. Otherwise, the cover can be
closed by the wi
nd and cause your fingers getting pinched or your head being hit.
❑ When working on a Nexus FT on high ground, for instance on a mast or pole, be careful
not to drop par
ts or the entire Nexus FT. Falling parts can cause serious personal injury.
❑ All RF transmitting units, including Nexus FTs, will generate radio signals and thereby
give rise to ele
ctromagnetic fields that may be hazardous to the health of any person
who is extensively exposed close to an antenna.
❑ A lithium battery is permanently mounted on the CU and FON PCBAs. Due to the risk
of explosion, this ba
ttery must only be removed from the board by a Powerwave
authorized service technician.
❑ NiCd batteries are mounted on the FON PCBA. These batteries contain environmental
poisonous substanc
es. If replaced, the old batteries should be disposed of as stated in
the local prescriptions.
❑ The FON unit contains a Class 1M laser transmitter that emits 2—4 mW invisible laser
radiation at 155
0 nm during operation and is intended for a restricted location. Avoid
direct exposure from a disconnected laser transmitter or fiber cord. For example, do not
view directly with optical instruments (magnifiers) and do not view directly with
non-attenuating optical instruments.
❑ T
he FON Unit has this label attached:
❑ Do not power up the FON unit if a fiber cable is not connected to the fiber output UL
por
t, or if a fiber
cable is connected to the port but disconnected at the other end.
❑ Never look at the end of a fiber cable. The 1310nm and 1550n
m laser light is not
visible. Always use an instrument, such as a power meter, to detect signaling.