Exfo FTB-5230S Optical Spectrum Analyzer for FTB-500 Manuel d'utilisateur télécharger pdf (Page 128)

Setting Up the Instrument in Drift Mode

122 FTB-5230S/-OCA

Setting Up Drift Analysis Parameters

3. Select the Activate all thresholds option to manually set the channel

threshold values. If this option is not selected, all the thresholds will be

deactivated, results are displayed without a Pass/Fail status in the

Channel Graph, Channel History and Channel Results tabs.

4. Enter values in the boxes as explained below:

 Wavelength/Frequency (nm/GHz): central wavelength/frequency

of the channel.

 Signal power (dBm): signal power for the selected channel

(excludes noise).

 OSNR (dB): 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).

5. 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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Exfo FTB-5230S Optical Spectrum Analyzer for FTB-500 Manuel d'utilisateur Page 128