OPRTX
OPRTX (Channel Power Unstable)
The OPR Channel Power Unstable alarm is raised on cards with a Wavelength Tracker
detect point when the power is outside of the provisioned power range.
This alarm may be caused by one of the following:
• Introducing more or less attenuation in the fiber
• Adjusting the amplifier, which may have occurred elsewhere in the network, due to
fiber repair activity or network adjustments such as adding or deleting a node
• In the case of FOADM (running in manual mode) when channel power is not adjusted
to the expected power levels
Severity Minor
Service affecting? No
Applicability 112SCA1, 112SCX10, 43SCX4, AHPHG, AHPLG, ALPHG,
ALPFGT, OPS, OSCT, CWR8, MVAC
Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
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1
Perform the procedure “Path Power Trace” (p. 3-8) to determine the power levels
upstream of the alarmed card. Troubleshoot, isolate and identify other alarms or
conditions that would cause the OPR alarm to be raised. Using the appropriate corrective
actions resolve these issues first.
Trouble-clearing procedures
OPRTX
OPRTX (Channel Power Unstable)
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
2-239
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