EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) User Manual

Page 84

Setting Up the Instrument in WDM Mode

FTB-5240S/5240BP

Setting Up WDM Analysis Parameters

Stop range (nm or Thz): indicates the ending range of the
channel list.

Channel center wavelength/frequency: indicates the spectral
center-of-mass for the peak in that channel.

Note: When using the custom channel center wavelength option, the first channel

will be centered at the Start Range, and the list will be created using
channel distance and channel width.

Channel distance (nm or GHz): indicates 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): indicates the 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: Sets the increment starting value for the channel
name in the channel list.

Increment value: Sets the 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.