Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Bedienungsanleitung PDF herunterladen (Seite 292)

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Managing Results

284 FTB-5240S/5240BP

Managing WDM Test Results

³ Noise (dBm): indicates the level of the noise for the selected channel

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

³ BW 3.00 dB (nm): indicates bandwidth measured by taking the width

of a signal at 50 % linear power of the peak or -3 dB from the peak.

³ BW x dB (nm): indicates bandwidth measured by taking the width of a

signal at x dB from the peak.

A small red marker ( ) will point down at the peak in the Graph tab when

you select a row in the Results tab. The red marker will move accordingly

to indicate the corresponding peak on the graph, with a focus on the

selected channel.

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