EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 339)

Managing Results
Optical Spectrum Analyzer 331
Managing Drift Test Results
To define a marker:
1. From the main window, press the Markers tab.
2. Set the marker by entering precise values in the A, B, C, and D boxes.
Vertical markers A and B appears on the graph and the following
values will be displayed in the Markers tab.
³
power value corresponding to the wavelength position of both the
markers.
³
wavelength difference between the markers (A-B)
³
power difference in dB between the markers
³
integrated power between markers in dBm.
Horizontal markers C and D appears on the graph and the power
difference between the markers (C-D) related to the horizontal
markers will be displayed in the Markers tab.