363-206-295
(TOP)
Maintenance
and
Operation
The
light.
monochromatic
of
beam
intense
an
produce
can
lasers
Conventional
may
that
color
pure
of
output
wavelength
single
a
means
monochromaticity
term
small-size
a
produces
laser
conventional
A
eye.
the
to
invisible
or
visible
be
called
(also
density
power
the
small
is
size
beam
the
because
and
light,
of
beam
to
subject
are
products
laser
and
lasers
Consequently,
high.
very
is
irradiance)
for
standards
international
as
well
as
regulations
state
applicable
and
federal
operation.
safe
their
very
be
to
said
is
or
distance,
over
little
very
expands
beam
laser
conventional
A
constant
relatively
remains
irradiance
laser
conventional
Thus,
collimated.
well
beam
large
a
have
systems
lightwave
in
used
lasers
However,
distance.
over
inverse
the
obeys
irradiance
Here,
degrees.
20
to
10
typically
divergence,
and
4)
of
factor
a
by
irradiance
the
reduces
distance
the
(doubling
law
square
distance.
over
decreases
rapidly
Damage
Eye
and
Lasers
range
400-1400nm
the
in
LEDs
high-radiance
and
laser
by
emitted
energy
Light
enters
light
of
beam
a
When
retina.
the
by
absorbed
if
damage
eye
cause
my
irradiance.
the
magnifying
energy,
the
focuses
and
magnifies
eye
the
eye,
the
10
approximately
is
retina
the
reaches
that
energy
of
irradiance
The
5
100,000
or
burn.
retinal
a
cause
may
intense,
sufficiently
if
and
cornea,
the
at
that
times
is
telecommunications
in
used
wavelengths
the
at
mechanism
damage
The
specific
a
Therefore,
heating).
by
caused
damage
is,
(that
origin
in
thermal
tissue.
retinal
of
area
an
heat
to
time
definite
a
for
required
is
energy
of
amount
light
the
at
looks
one
when
only
occurs
It
instantaneous.
not
is
Damage
time
viewing
the
and
irradiance
retinal
the
of
product
the
that
long
sufficiently
cause
would
nm
1400
above
energies
Light
threshold.
damage
the
exceeds
area.
retinal
the
affect
not
do
and
burns
skin
and
surface
Lasers
of
Classification
Food
the
by
regulated
are
U.S.
the
in
products
laser
and
lasers
of
Manufacturers
Health
Radiological
and
Devices
for
Center
Administration’s
Drug
and
to
manufacturers
require
regulations
These
1040.
CFR
21
under
(FDA/CDRH)
—
Classes
major
four
of
one
to
belonging
as
product
laser
or
laser
each
certify
accessibly
the
to
according
classified
are
Lasers
IV.
or
IIIb,
IIIa,
IIa,
II,
I,
Class
are
systems
Lightwave
injury.
causing
for
potential
their
and
limits
emission
all
conditions,
operation
normal
under
because,
I,
Class
as
classified
generally
which
fibers
optical
on
terminated
are
packs
circuit
transmitting
laser
energized
Also,
housing.
protective
a
forming
sheath,
fiber
with
energy
laser
the
enclose
shelves.
pack
circuit
the
over
place
in
are
covers
6
1997
December
1
Issue
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
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Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
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Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
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Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...