Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Instrukcja Użytkownika Pobierz pdf (Strona 373)

100

101

Managing Results

Optical Spectrum Analyzer 365

Managing Spectral Transmittance Test Results

3. Edit the values as explained below:

³ Channel definition (GHz): indicates the limit inside which the

power values will be considered in the channel.

Centred on max peak: Channel is centered on the lowest

insertion loss peak.

ITU Grid: Select the nearest ITU channel from the peak with

lowest insertion loss.

CWDM: Select the nearest CWDM channel from the peak with

lowest insertion loss.

Custom: Channel is centered on value specified by the user.

³ Nominal wavelength or frequency (nm or Thz): indicates a

single value that represent the channels center wavelength (in nm)

or frequency (in THz). This field is editable only when Channel

definition is selected as Custom.

³ Channel distance (GHz or nm): indicates distance between the

channels. The value of channel distance will be set depending on

the selection made for the channel definition option. The channel

distance box will be enabled only when the channel center

wavelength option is set to custom.

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