EXFO FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 User Manual
Page 214

Managing Results
208
FTB-5230S/-OCA
Managing Markers
To manually enter a marker position value:
1. If you have not done so already, press the
button on the top
left-hand corner of the display to make the marker toolbar appear.
2. Set the marker by entering precise values in the box corresponding to it
or by dragging it on-screen.
As markers A and B appear on the graph, the following values will be
displayed in the marker toolbar.
power values corresponding to the wavelength position of both
markers.
wavelength or frequency difference between the markers (A-B)
power difference in dB between the markers
integrated power between the markers in dBm (when horizontal
markers are hidden)
power difference between the traces (active against reference or input
against output) for both markers in dB (when horizontal markers are
hidden).
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