Procedure 4-24: Install DWDM optical multiplexer/demultiplexer circuit packs
Overview
Use this procedure to install LNW785 OMD5/8 8-channel low-loss DWDM Optical Mux/Demux circuit packs.
The OMD5/8 circuit pack multiplexes/demultiplexes up to 8 DWDM optical channels spaced 100 GHz apart, ranging from 1530 to 1536 nm.
Equipage guidelines (Main slots not equipped with Very Large Fabric circuit packs)
If the Main slots are not equipped with Very Large Fabric LNW84 or LNW141 OLIU circuit packs, the circuit packs in a Function/Growth group must be the same circuit pack type. For example, both circuit packs in a Function/Growth group must be OMD circuit packs. If the circuit packs in a Function group are different circuit pack types, the system reports an unexpected CP type alarm and service may be impacted.
Since all DWDM-related circuit packs are considered the same circuit pack type, an OMD circuit pack may be installed in a Function/Growth group with a 10G Muxponder circuit pack.
Equipage guidelines (Main slots equipped with Very Large Fabric circuit packs)
If the Main slots are equipped with Very Large Fabric LNW84 or LNW141 OLIU circuit packs, the circuit packs in a Function/Growth group may be the same or different circuit pack type depending on the Slot Protection State.
For OMD circuit packs, the Slot Protection State parameter is fixed Unprotected. If the Slot Protection State is Protected and an OMD circuit pack is installed, the system reports an unexpected CP type alarm and service may be impacted. If the Slot Protection State is Unprotected, an OMD circuit pack may be installed in a Function/Growth group with any DWDM, Ethernet/Data or low-speed OLIU circuit pack. The system does not support OMD circuit packs in a Function/Growth group with electrical low speed circuit packs.
If an incompatible circuit pack is installed in a Function/Growth slot, the system reports a CP not allowed - eqpt alarm.
Select View → Equipment to access the circuit pack details and determine the value of the Slot Protection State parameter.
The Slot Protection State parameter can be changed from Protected to Unprotected or from Unprotected to Protected. If required, refer to Procedure 4-23: Change slot protection state.
Privilege level
You must log in as a Privileged, General, Maintenance, or Reports Only user to complete this procedure.
Required equipment
A deeper shelf cover (comcode 849064282) is required for shelves equipped with OMD circuit packs. This shelf cover provides more space to prevent fibers from touching the front cover when the cover is closed.
Before you begin
Prior to performing this procedure:
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Refer to Required equipment and Before you begin in this chapter.
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Refer to Laser safety and Electrostatic discharge in Chapter 1, Safety.
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Ensure that an OMD circuit pack is available for installation.
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Use the work instructions and select View → Equipment to access the circuit pack details and determine if the Main slots are equipped with Very Large Fabric LNW84 or LNW141 OLIU circuit packs.
Steps
Complete the following steps to install an OMD circuit pack.
1 |
Determine the Function/Growth slots being equipped with an OMD circuit pack. Reference:
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2 |
Ensure all optical fiber connectors and couplings are properly cleaned. Important! Signal performances may be degraded if the connections and couplings are not cleaned properly. Reference: Procedure 14-3: Clean optical fibers, dual LC adapters and LC lightguide buildouts (LBOs) | ||||||
3 |
Important! A deeper shelf cover (comcode 849064282) is required for shelves equipped with OMD circuit packs. This shelf cover provides more space to prevent fibers from touching the front cover when the cover is closed. Verify that the shelf is equipped with the deeper shelf cover and carefully remove any caution tags that are attached to the circuit pack. | ||||||
4 |
Open both faceplate latches and seat the OMD circuit pack in the required Function/Growth slot. Result: The FAULT LED lights for approximately 2 minutes then goes off, indicating successful installation. Select View → Refresh System View and the circuit pack appears in the WaveStar® CIT System View indicating successful installation. | ||||||
5 |
Is a second OMD circuit pack required in the companion Function/Growth slot?
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6 |
Important! Pre-equipping Add/Drop Ring nodes with pass-through fiber jumpers minimizes the installation time of pass-through connections when a service is established. Constant travel to pass-through nodes is avoided when a service is added. If required, install pass-through jumpers between the Optical Channel (OCH) ports of the OMD circuit packs in the Function/Growth Group. | ||||||
7 |
From the System View window, click the Alarm List button to verify that no alarms are present for the ports on the circuit packs just installed. Result: The NE Alarm List appears. No alarms should be present for the circuit packs just installed. | ||||||
8 |
If required, provision the Optical Transport Section (OTS) port parameters. Reference: Procedure 4-25: Provision optical transport signal (OTS) port End of steps |