Lucent DDM-2000 OC-3 User And Service Manual page 462

NTP-049
: Circuit Order
Page 2 of 10
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
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3.
WARNING:
Unterminated optical connectors may emit invisible laser
radiation. Eye damage may occur if beam is viewed directly
or with improper optical instruments. Avoid direct exposure
to the beam.
NOTE:
The rtrv-eqpt: command retrieves the Equipage and
Version Report. This report lists the circuit pack type and
version information for one or more slots. See the
Commands and Reports section of this manual for a
description of the rtrv-eqpt: command format.
NOTE:
DDM-2000 OC-3 shelves must be connected through the
FUNCTION UNITS C slots if the shelf or network is deriving
timing from the OC-3 optical links to the OC-48 network. See
description of the src parameter in set-sync: command
in Volume I of this User/Service Manual.
At OC-3 or OC-12 node, verify/install OLIU circuit packs in
FUNCTION UNITS slots being used for the new OC-3 extension.
4.
NOTE:
The 22G-U OLIU(s) requires a 10 dB LBO when it is looped
on itself. 22G2-U, 22G3-U, and 22G4-U OLIUs require no
attenuation when looped back.
NOTE:
If fecom is enabled, an inconsistent DCC values alarm
will occur when the OLIUs are looped back. Normally, the
alarm occurs when the user/network parameters on the
OHCTLs at both ends of the DCC are set the same. To clear
the alarm during a fiber loopback, use the
set-fecom:address:com=disable command to disable
the DCC.
Connect optical loops for OLIUs just installed.
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285
DLP-504
DLP-505