Cisco ONS 15454 DWDM - Page 319

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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
September 2005
Chapter 4 Perform Node Acceptance Tests
NTP-G50 Perform the OADM Passive Node Acceptance Test on a Symmetric Node with OSC-CSM Cards
Note Configuring a channel in pass-through mode means that the channel is dropped in one direction
by an AD-xC-xx.x card on one side (east or west) of the node, then added by another AD-xC
x.xx card on the opposite side in the same direction. The channel is not terminated inside the
node.
Step 8 If no channels are configured in pass-through mode, continue with Step 9. If a channel is configured in
pass-through mode, mark it and skip the related optical test for the express, add, and drop sections.
Channel pass-through connections are verified separately.
Step 9 Create a loopback on the west OSC-CSM card by connecting the LINE TX port to the LINE RX port
using a patchcord and 10-dB bulk attenuator.
Step 10 Verify that the OSC link becomes active on the west OSC-CSM card. (The OSC termination must be
already provisioned. If not, complete the “NTP-G38 Provision OSC Terminations” procedure on
page 3-84.)
Note Due to the OSC signal loopback, an SDCC Termination Failure alarm might be raised.
Step 11 If the OSC link becomes active, continue with Step 12. If the OSC link does not turn up, perform the
following troubleshooting steps:
a. Remove the 10-dB bulk attenuator between the LINE TX and LINE RX connection. If the OSC link
becomes active, continue with Step 12. If not, continue with Step b.
b. Modify the OSC Fail Low thresholds. Click the Provisioning > Optical Line > Optics Thresholds
tabs and change the Port 6 opwrMin (minimum power) to –40 dBm.
c. Modify the COM TX Fail Low Threshold. Change the Port 3 opwrMin (minimum power) to
–30 dBm.
d. If the OSC link turns up, continue with Step 13. If it does not turn up, replace the OSC-CSM card.
Step 12 If the node has express bands or channels, complete the “DLP-G86 Verify Express Channel Connections
on an OADM Node with OSC-CSM Cards” task on page 4-46. If the node does not have express bands
or channels, continue with Step 12.
Step 13 If connections configured in pass-through mode are present (noted in Steps 5 and 7), complete the
“DLP-G89 Verify OADM Node Pass-Through Channel Connections” task on page 4-49. If not, continue
with Step 14.
Step 14 If connections have add/drop connections, complete the “DLP-G94 Verify Add and Drop Connections
on OADM Node with OSC-CSM Cards” task on page 4-56.
Stop. You have completed this procedure.