Alcatel-Lucent 1675 LambdaUnite Installation And System Turn-Up Manual page 34

About this document
...................................................................................................................................................................................................................................
Laser safety precautions for unenclosed systems
During service, maintenance, or restoration, an optical fiber telecommunication system is
considered unenclosed. Under these conditions, follow these practices:
1. Only authorized, trained personnel shall be permitted to do service, maintenance and
restoration. Avoid exposing the eye to emissions from un-terminated, energized
optical connectors at close distances. Laser modules associated with the optical ports
of laser circuit packs are typically recessed, which limits the exposure distance.
Optical port shutters, Automatic Power Reduction (APR), and Automatic Power Shut
Down (APSD) are engineering controls that are also used to limit emissions.
However, technicians removing or replacing laser circuit packs should not stare or
look directly into the optical port with optical instruments or magnifying lenses.
( ormal eye wear or indirect viewing instruments such as Find-R-Scopes are not
considered magnifying lenses or optical instruments.)
2. Only authorized, trained personnel shall use optical test equipment during installation
or servicing since this equipment contains semiconductor lasers. (Some examples of
optical test equipment are Optical Time Domain Reflectometers (OTDRs), Hand-Held
Loss Test Sets.)
3. Under no circumstances shall any personnel scan a fiber with an optical test set
without verifying that all laser sources on the fiber are turned off.
4. All unauthorized personnel shall be excluded from the immediate area of the optical
fiber telecommunication systems during installation and service.
For the optical specifications please refer to the 1675 LambdaUnite MSS Product
Information and Planning Guide, chapter 10, section "Transmission parameters".
Orientation aids
This document contains the following orientation aids, which are explained below:
• Overall TOC
• Chapter TOCs
• Index
The following graphic depicts the principle structure of this document:
...................................................................................................................................................................................................................................
xxxiv Alcatel-Lucent – Internal
Proprietary – Use pursuant to Company instruction
365-374-198R10.5.4
Issue 1 July 2009