EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 360)

Managing Results
352 FTB-5240S/5240BP
Managing Spectral Transmittance Test Results
Results Tab
The results table shows the spectral transmittance results for the active
trace. Results for only the channels within the scan range will be displayed.
To view results:
From the main window, select the Results tab.
The following results related to the channels are displayed:
³
Nominal center wavelength or frequency (nm or Thz): indicates
a single value that represent the channels center wavelength (in
nm) or frequency (in THz).
³
Offset to nominal wavelength or frequency (nm or Thz):
indicates the offset value applied to the nominal wavelength (in
nm) or frequency (in THz).
³
Insertion loss min (dB): indicates the minimum difference
between a reference power level and the measured power level
(in dB).
³
Insertion loss max (dB): indicates the maximum difference
between a reference power level and the measured power level
(in dB).
³
Bandwidth x at (dB): indicates bandwidth measured by taking the
width of a signal at x dB from the peak.
³
Bandwidth y at (dB): indicates bandwidth measured by taking the
width of a signal at y dB from the peak.
³
Adjacent channel isolation (dB): is the isolation (in dB) taken at
the channel distance on the left or right of the nominal wavelength.
The worst value between the left and right isolation is kept.