EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 91)

Setting Up the Instrument in WDM Mode
OSA 85
Using the Commissioning Assistant
3. When you are ready to proceed, press either the right arrow button, or
On-channel trace.
4. Select the trace that will be used with all channels ON. This trace can
be the one presently in memory (active trace only, not the reference
trace), or you can select another one that you have previously stored.
Once the measurement file is selected, you can see at the bottom of
the window whether this measurement is compatible or not for
commissioning.
Note: EXFO recommends setting the acquisition type to i-InBand or InBand (with
a minimum of 100 scans) to acquire this trace.