Cisco ONS 15454 DWDM - Page 315

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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
September 2005
Chapter 4 Perform Node Acceptance Tests
NTP-G48 Perform the OADM Node Acceptance Test on a Symmetric Node with OSCM 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 OPT-BST 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 OSCM card. (The OSC termination must be already
provisioned. If not, complete the “NTP-G38 Provision OSC Terminations” procedure on page 3-84.) If
the OSC link becomes active, continue with Step 11. If the OSC link does not turn up, complete the
following steps:
a. Modify the OSC Fail Low thresholds. Click the Provisioning > Optical Line > Optics Thresholds
tabs and change the Port 4 opwrMin (minimum power) to –40 dBm.
b. Modify the COM TX Fail Low Threshold. Change the Port 2 opwrMin (minimum power) to
–30 dBm.
c. If the OSC link turns up, continue with Step 11. If the OSC link is still down, disconnect the OSCM
card from the OPT-BST.
d. Create a loopback on the OSCM card by connecting patch cable from the OSC TX port to the
OSC RX port using a 10-dB bulk attenuator.
e. If the OSC link turns up, replace the OPT-BST card. If the OSC link does not turn up, replace the
OSCM card.
Note Due to the OSC signal loopback, an SDCC Termination Failure alarm might be raised.
Step 11 If the node has express bands or channels, complete the “DLP-G85 Verify Express Channel Connections
on an OADM Node with OSCM Cards” task on page 4-44. If the node does not have express bands or
channels, continue with Step 12.
Step 12 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 13.
Step 13 If connections have add/drop connections, complete the “DLP-G93 Verify Add and Drop Connections
on an OADM Node with OSCM Cards” task on page 4-53.
Stop. You have completed this procedure.