DLP-
518
363-206-295
1997
December
1,
Issue
27
of
20
Page
21D/21D-U or
OLIU
21G2-U
23.
!
WARNING:
Do
radiation.
laser
invisible
emit
may
connectors
optical
Unterminated
to
exposure
direct
Avoid
instruments.
optical
with
beam
view
not
procedures
of
performance
or
adjustments
or
controls
of
Use
beam.
radiation
hazardous
in
result
may
herein
specified
those
than
other
exposure.
!
1:
CAUTION
and
good
line
(protection
available
is
switching
protection
that
Ensure
use
available,
When
effect).
in
switches
forced
or
inhibits,
locks,
no
and
CIT
switch-line
Line
switch.
protection
do
to
command
to
necessary
be
may
It
unidirectional.
is
request
switching
protection
perform
switch-line
both
switch
to
end
far
and
end
near
at
line.
same
to
receive
and
transmit
!
2:
CAUTION
lighted
without
one
the
remove
always
packs,
circuit
removing
When
ACTIVE
first.
LED
!
3:
CAUTION
installing
Before
21D/21D-U or
OLIU
21G2-U
fiber
optical
all
ensure
s,
[
cleaned
properly
been
have
couplings
and
connectors
DLP-522].
are
couplings
and
connectors
if
degraded
be
may
performance
Signal
properly.
cleaned
not
cables
optical
remove
then
line,
other
to
switched
been
has
service
Ensure
from 21D/21D-U or 21G2-U
replaced.
be
to
OLIU