363-206-305
Issue 3, June 2000 Page 7 of 12
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
Safety Precautions for Enclosed Systems
Under normal operating conditions, lightwave transmission systems are completely
enclosed; nonetheless, the following precautions should be observed:
1. Because of the potential for eye damage, technicians should neither disconnect any
lightwave cable nor splice and stare into the optical connectors terminating the
cables.
2. Under no circumstances shall lightwave/lightguide operations be performed by a
technician before satisfactorily completing an approved training course.
3. Since viewing lightwave emission directly with an optical instrument, such as an eye
loupe, greatly increases the risk of eye damage, an appropriate label must appear in
plain view on the front of the main frame or lightguide termination/interconnection
equipment. The safety label (Figure 1) shall read as follows:
Figure 1. Safety Label
UNTERMINATED OPTICAL
CONNECTORS MAY EMIT LASER
RADIATION. DO NOT VIEW BEAM
WITH OPTICAL INSTRUMENTS.
NOTICE
INVISIBLE LASER RADIATION
WHEN OPEN. AVOID DIRECT
EXPOSURETO BEAM.
DANGER
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