Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Manual do Utilizador descarregar pdf (Página 127)

100

101

Setting Up the Instrument in Drift Mode

Optical Spectrum Analyzer 119

Defining Preferences

2. Select the Drift Results tab.

3. Select which parameters you want to display in the Channel Graph

tab from the list of available choices:

³ Center wavelength/frequency: indicates the spectral

center-of-mass for the peak in that channel.

³ Signal Power: indicates the signal power for the selected channel

(excludes noise).

³ OSNR: is the Optical Signal to Noise Ratio, given by Signal power

(according to the current calculation method, in dBm) minus

Noise (according to the current calculation method, in dBm).

4. Press OK to save the changes and close the window, or press Cancel to

exit without saving.

Press Restore Defaults to remove all the changes and apply the default

values.

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