EXFO FTB-5800 Chromatic Dispersion Analyzer for FTB-400 - Manual (Page 49)

Managing Results
Chromatic Dispersion Analyzer 43
Analyzing Results from the Results Graph
Analyzing Results from the Results Graph
The application presents a graph containing details about the current
acquisition, including the fitted lambda zero value (extrapolated
wavelength at which the dispersion equals 0), the dispersion, the RGD
curve (illustrating the fitted points) and the measured RGD points. The
fitted lambda zero value, the RGD curve and the RGD points can be shown
or hidden, according to your needs.
The graph is based on three scales:
³
Dispersion scale: displays results in ps/nm-km or in ps/nm if the fiber
length is not known or not entered.
³
Relative Group Delay (RGD): displays results in ps.
³
Wavelength: displays the wavelength in nm.
Relative Group
Delay scale Dispersion
scale
Wavelength
scale
Dispersion
curve Measured
data point
RGD curve
Data fit type
Marker
Zoom
parameters