Lucent DDM-2000 OC-3 User And Service Manual page 775

DLP-505
: Detailed Level Procedure
Page 1 of 8
!
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:
Take care to avoid damaging the LEDs that protrude through the opening
in the faceplate of the OLIU .
!
CAUTION:
Avoid excessive bending of the optical jumper used to loop the OLIU on
itself.
!
CAUTION:
All optical fiber connectors and couplings should be properly cleaned
[DLP-527] . Signal performance may be degraded if the connectors and
couplings are not cleaned properly.
NOTE:
The 22D-U, 22G-U, 24G-U/24H-U, 26G2-U, 27G-U/27G2-U, and
29G-U/29H-U OLIU requires a 10 dB LBO when it is looped on itself.
Which OLIUs are being looped?
If 22F/22F-U/22F2-U/22G2-U/22G3-U/22G4-U, then proceed to Step 2.
If 22D-U/22G-U/24G-U/24H-U/26G2-U/27G-U/27G2-U/29G-U/29H-U,
then proceed to Step 7.
Connect Optical Loop
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285