EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 290)

Managing Results
284 FTB-5240S/S-P/BP
Managing Drift Test Results
When the acquisition is taken (see Starting a Measurement on page 237 for
details on how to perform a test), the active trace will be displayed in the
tab with information along the following axis values:

X axis: wavelength in nm or frequency in THz.

Y axis: optical power expressed in dBm, as measured in the optical
resolution bandwidth (RBW) of the OSA. This reference RBW is shown
at the bottom of the graph.
l
The graph will display peak indicators for all the channels found by the
application with a red vertical line over the peaks to indicate the peak
position.
A blue horizontal bar ( ) will be displayed on the top of a channel if it
does not overlap with another channel. If the channel overlaps with
another channel, the horizontal bar will be yellow (
).