EXFO FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 - Manual (Page 133)

Setting Up the Instrument in Drift Mode
OSA/OCA 127
Setting Up Drift Analysis Parameters

Channel distance (nm or GHz): distance between the channels.
The value of channel distance will be set depending on the
selection made for the channel center wavelength option. The
channel distance box will be enabled only when the channel
center wavelength option is set to custom.

Channel width (nm or GHz): limit inside which the power values
will be considered in the channel. Integrated power is calculated
on channel width.

Name prefix: adds prefix to the channel names.

Starting Value: increment starting value for the channel name in
the channel list.

Increment value: increment value for the channel name in the
channel list.
5. Press OK to return to the Channels window, which now lists the added
channels.
Note: When new channels are added, the Use Default thresholds will be applied
to the channel parameters.
Note: A warning message will be displayed if any channels are overlapping, but
the analysis can still be performed on overlapping channels. If any
duplicate channels are added, a confirmation message will be displayed to
overwrite the existing channels with the duplicate channels.
6. Press OK to save the changes and close the window, or press Cancel to
exit without saving.
Note: The application displays a message if more than 1000 channels are added.
You can exit the Analysis Setup window only after deleting the extra
channels from the channel list. You can delete the channels manually as
required.