DLP-523
: Detailed Level Procedure 363-206-305
Page 2 of 12 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
BBG8/BBG8B SYSCTL
2. Refer to
DLP-501
to replace the
SYSCTL
.
3.
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
OLIU
4.
!
WARNING:
Unterminated optical connectors may emit invisible laser radiation. Avoid
direct exposure to the beam. Do not view beam with optical instruments.
Use of controls, adjustments, or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
!
CAUTION:
This procedure is used to replace a
26-Type OLIU
with a
26-Type
OLIU
. This procedure is used
to replace a
28-Type OLIU
with a
28-Type OLIU
or a
29-Type OLIU
with a
29-Type OLIU
. This procedure
is not used to perform an Out Of Service Upgrade from a
26-Type
OLIU
to a
28-Type
or
29-Type OLIU [DLP-543]
.
!
CAUTION:
Ensure that protection switching is available (protection line good and no
locks, inhibits, or forced switches in effect). When available, use a CIT
and the
switch-path-vt1:
or
switch-path-sts1:
command to do
a protection switch. The line protection switching request is unidirectional.
It may be necessary to perform a
switch-path-vt1:
or
switch-path-sts1:
command at the near end and far end to switch
both transmit and receive to the same line. If there are any locked
cross-connections, switching of traffic cannot occur.
!
CAUTION:
When removing circuit packs, always remove the one without the lighted
ACTIVE
LED first. Remove optical fiber cables before removing circuit
pack and take care to avoid damage to fibers during removal or
installation of the circuit pack.
!
CAUTION:
Before installing
OLIU
s
, ensure all optical fiber connectors and couplings
have been properly cleaned
[DLP-527]
. Signal performance may be
degraded if the connectors and couplings are not cleaned properly.
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