User's Manual Part 6

C-6 Appendix C – Compliance Information
IEC/EN 60825-2 - Safe Use of Optical Fiber
Communication Systems
Part 2 of IEC 60825 provides requirements and specific guidance for the safe use of
optical fiber communications where optical power may be accessible at some
distance from the optical source. In this part of IEC 825, light emitting diodes
(LED’s) are included whenever the word “laser” is used.
Description of LG
Cell
System
The LG
Cell
is a distributed antenna system. It consists of three main components.
A Main Hub, which is connected by dual mode fiber optic cables to one or more
Expansion Hubs. Each Expansion Hub is connected by UTP CAT 5 cable to a
Remote Antenna Unit. Because LED’s are used to send a signal over the fiber optic
cable, the LG
Cell
is covered under the IEC 60825 specification.
Requirements under IEC 60825
Under IEC 60825, LGC Wireless is required to determine the Class of operation of
the LG
Cell
system, the Hazard level of the LG
Cell
system and any special
instructions that must be included in an operators manual as well as any warning
labels that may be required on the LG
Cell
system.
The LG
Cell
is covered only under these definitions of section 3 of 60825
.
3.2 enclosed system:
A system in which, during normal operation, the optical
radiation is totally enclosed, by light proof cabinets, components, total internal
reflection or optical fiber cables and connectors.
3.3 end user:
The person or organization using the optical fiber communication in
the manner the system was designed to be used. The user cannot necessarily control
the power generated and transmitted within the system.
3.4 hazard level 1:
A hazard level 1 is allocated to any part within an optical fiber
communication system at which, under reasonably foreseeable circumstances,
human access to laser radiation in excess of the accessible emission limits (AEL) of
class 1 for the applicable wavelengths and emission duration will not occur.
3.10 light emitting diode (LED):
Any semiconductor device which can be made
to produce electromagnetic optical radiation in the wavelength range from 180nm
to 1mm. (The optical radiation is produced by the process of spontaneous emission,
although some stimulated emission may be present.)
3.13 location with controlled access:
A location where access to the protective
housing (enclosure) is controlled and is accessible only to authorized persons who
have received adequate training in laser safety and servicing of the system involved.
Examples include optical cable ducts and switching centers.