Operational Tests
Automatic Protection Switching and Alarm Test
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5 - 9
Lucent Technologies - Proprietary
See notice on first page
365-372-327 R2.0
Issue 1, October 2003
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Automatic Protection Switching and Alarm Test
Description
This section provides the procedures for verifying the Metropolis
®
DMXtend shelf automatic protection switching.
Note the following:
•
These tests do NOT simulate circuit pack failures.
•
The tests will verify proper alarm reporting and LED indica-
tions when circuit packs are removed.
•
All protected circuit packs will be tested.
•
A properly grounded wrist strap must always be worn while
handling circuit packs.
•
This test is performed with the Metropolis
®
DMXtend shelf
optically looped back on itself (that is, with the
OUT
of the
OLIU M1 looped to the
IN
of the OLIU M1, and the
OUT
of
the OLIU M2 looped to the
IN
of the OLIU M2).
•
Prior to performing each test, the shelf under test must be
clear of all alarms (that is, only green LEDs are lit).
CAUTION
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A properly grounded ESD wrist strap MUST be worn when
handling circuit packs.
WARNING
Unterminated optical connectors may emit laser radiation. Do
not view beam with optical instruments.
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