EXFO FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 - Manual (Page 93)

Setting Up the Instrument in WDM Mode
OSA/OCA 87
Setting Up WDM Analysis Parameters
5. Modify the settings as needed. For more information about the settings,
see Defining General Settings on page 64 and Defining Default
Thresholds on page 76. If you leave a box empty, it will remain as it was
before your changes. Modify appropriate settings.
6. Press OK to return to the Channels tab, which now contains the
modified settings.
7. Press OK to save the changes and close the window, or press Cancel to
exit without saving.