Exfo FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 Instrukcja Użytkownika Pobierz pdf (Strona 185)

Managing Results

OSA/OCA 179

Managing WDM Test Results

The noise level for a channel is indicated by a dotted line under the

selected peak. The width of the noise level indicator is set according to the

current Noise for OSNR setting. The width of the noise level indicator

depends on the noise associated with the OSNR setting (from the largest to

the narrowest): IEC, InB, InB nf and fit.

A dotted line across the full spectral width corresponds to the peak

detection level indicator. This line indicates the minimum power level

(dBm) from where a peak can be considered as a valid signal.

A peak detection level cursor is available in the graph when the Results tab

is selected. The cursor is positioned along the Y-axis in accordance with

the application's peak detection level global analysis parameter.

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Exfo FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 Instrukcja Użytkownika Strona 185