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Normalized to km
No
Yes
CD Setup Expert
Press
additional parameters to be configured:
Approx. formula
Select the approximation formula to be used for the calculation of the delay, dispersion
and slope curves:
Please refer to ITU-T G.650.1 or IEC 60793 1-42 for further information.
Quadratic
3T Sellmeier
5T Sellmeier
Lambda Log
You can also let the product to configure automatically the approximation formula to be
used by selecting Auto.
It is recommended to select the quadratic formula when the ODM Mod-
ule is used with an OBS-5XX or a 81BBS2A, in SCL mode.
Amplified link
Select Yes when measuring through optical amplifiers (see
ment through amplifiers" on page
Display parameters
In the Setup menu, press Display.
Chapter 4 CD measurements using phase shift method
Only Dispersion results of the link are displayed, in ps/nm.
In addition to dispersion results, dispersion coefficient are calculated
according to the fiber length and listed in the table.
to switch to Expert mode
2
A+Bλ+Cλ
.
−2
2
A+Bλ
+Cλ
2
-2
A+Bλ
+Cλ
A+Bλ+Cλ ln(λ).
64).
User Manual
.
4
-4
+Dλ
+Eλ
.
700MAN902 Rev. 000
Configuring the CD test
and access
"Performing a CD measure-
55
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