EXFO FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 - Manual (Page 213)

Managing Results
OSA/OCA 207
Managing Markers
You can also use the automated marker positioning to place the markers
around a specific channel peak. The positions are set from the results grid,
according to the following by default:

A: set at the peak wavelength “ Peak(nm)” or frequency “ƒ
peak(Thz)”.

B: set at the wavelength/frequency which corresponds to a 3 dB drop
from the peak maximum power (Signal power “p” without subtracting
the noise).

C: set at the peak power ( Peak).

D: set at 3 dB below marker C.
If you move one of the markers, these new settings are kept for the next
use of the automated markers until you reset them or select another zoom
feature.
If the channel you select does not display a signal, the markers remain in
the position that they were before.
To display the marker toolbar:
Press the
button on the top left-hand corner of the display.
To display the automated markers:
Press the
button. The focus will be done on the currently selected
channel in the Results tab.