Lucent DDM-2000 OC-3 User And Service Manual page 771

DLP-504
: Detailed Level Procedure
Page 1 of 4
!
1.
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 or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
!
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.
!
CAUTION:
If optical fiber cables are routed beneath the OLIU s, be careful not to
pinch or crush the fibers when the OLIU s are inserted.
NOTE:
22D-U, 22G-U, 24G-U, 24H-U, 26G2-U, 27G-U/27G2-U, or 29G-U/29H-U
OLIUs require a 10 dB LBO when looped.
NOTE:
To ensure proper path protection switching in ring configurations, if
optical spans terminate in 22F/22F-U/22F2-U OLIUs at one node and
22G-U/22G2-U/22G3-U/22G4-U OLIUs at another node, use the
set-sts1:dgr= command to provision the bit error ratio (BER) to 10
at all nodes in the ring network.
NOTE:
The red FAULT LED flashes when no signal is present to the OLIUs.
NOTE:
When using the following procedures to install the OLIUs, if the
responses are not correct, check the connections. If the connections are
correct, replace the OLIU that has the wrong response.
Install OLIU Circuit Packs
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285
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