Field Notice: FN - 70114 - ONS-CFP2-WDM Units Might Have a Frequency Error on One Specific Channel - Replace on Failure

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision	Publish Date	Comments
2.1	18-Jul-23	Updated the Workaround/Solution Section and Added the Serial Number Validation Section
2.0	12-Jul-23	Updated the Workaround/Solution Section
1.0	07-Mar-18	Initial Release

Products Affected

Affected Product ID	Comments
ONS-CFP2-WDM=
ONS-CFP2-WDM

Defect Information

Defect ID	Headline
CSCvh57985	Supplier notified a calibration error on 53 SN. CPN affected 10-3128-05 and 10-3230-01

Problem Description

A limited number of ONS-CFP2-WDM units might have a frequency error on one of the channels.

Background

A new frequency locker calibration test kit was introduced at transmitter optical sub-assembly (TOSA) testing. In rare cases an erroneous lock ratio datapoint could be recorded in the calibration table at one channel spectrum.

Problem Symptom

One channel on affected devices might have a frequency error due to incorrect calibration data and will not be set to the correct frequency. This issue only affects one channel per affected device, all other channels are unaffected and are set to the correct frequency.

For example, this table shows three different ONS-CFP2-WDM units. The units would function correctly outside the channel band mentioned, but will not work within the range due to incorrect calibration.

Note: This table is an example and it is not representative of the all affected SNs. Each SN would have a different, random, affected channel band.

Wavelength Band 1 with Calibration Error (nm)
1555.26	1554.96
1555.41	1555.11
1529.28	1528.96

Workaround/Solution

Cisco expects that units which function correctly in the field will continue to do so, but if the wavelength is changed there is a probability that the error channel could be selected. Therefore, Cisco recommends that you replace the unit when a frequency error on any of the channels is observed. Enter the serial number in the Serial Number Validation Tool to find the impacted units.

Serial Number Validation

Cisco provides a tool to verify whether a device is impacted by this issue. In order to check the device, enter the device's serial number in the Serial Number Validation Tool.

Note: For security reasons, you must click on the Serial Number Validation Tool link provided in this section to check the serial number for the device. Use of the Serial Number Validation Tool URL external to this field notice will fail.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email
• By telephone

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