Knowledge Base - Solution

CD in ps/nm/km

Tuesday, December 31, 2019
Submitted by ryan.grace on July 8, 2021 - 5:48pm
Problem: 
My Viavi Chromatic Dispersion (CD) test results report the total dispersion as ps/nm instead of ps/nm/km. How do I get ps/nm/km?
Solution: 
To get dispersion reported as ps/nm/km, go to the CD setup screen and set Normalized to km to Yes. In order for the result to be accurate you need to ensure that the Fiber Length field is accurate.

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