Alcatel-Lucent Data Multiplexer Explore 1665, Installation Manual, Page: 240 / 408

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OC-48 (low-speed) testing Installation tests
4 - 5 2
365-372-304R7.1
Issue 1, November 2007
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OC-48 (low-speed) testing
OC-48 low-speed testing procedure
Perform the following steps for all 1665 DMX shelf Function Unit or Growth slots
containing OC-48 (LNW31, LNW425, LNW427, LNW447, LNW449, LNW453,
LNW455, LNW459) OLIU.
Important!
When reference is made to optical fiber loopback connections to IN and
OUT on the OLIU, make the connections at the LGX equipment in order to verify
correct installation and labeling of the fibers.
LBOs are installed on the OLIU faceplate IN port.
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1 Identify the function groups that contain an OC-48 OLIU circuit pack and fully insert the
OLIU into the shelf.
Requirement: After a few moments, the ACTIVE LED should be lit on the OC-48
OLIU.
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2
Insert a 15-dB LC-type LBO into the IN connector of the OC-48 OLIU. Refer to Appendix
C, “Installing fiber connectors and LBOs” .
Connect the fibers labeled IN and OUT from the LGX to the OLIU (Port 1).
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3 Connect the IN connector to the OUT connector (at the LGX) of the OC-48 OLIU, using
an optical fiber jumper cable. Refer to
Appendix B, “Fiber cleaning” for proper fiber
cleaning instructions.
Requirement: The FAULT LED on the OC-48 OLIU will begin flashing and the MN
and NE LEDs should be lit on the SYSCTL circuit pack.
After approximately 20 seconds the flashing FAULT LED should extinguish on the OC-48
OLIU and the FAULT, MJ and NE LEDs should be lit on the SYSCTL circuit pack.
CAUTION
Laser Safety
When connecting fiber loops between the IN and OUT ports on optical circuit
packs, always connect to the IN port first and then the OUT port. This will
prevent any optical radiation from being present at the fiber end.