Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Manual de usuario descargar pdf (Pagina 350)

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Managing Results

342 FTB-5240S/5240BP

Managing DFB Test Results

Results Tab

You can view the analysis of the DFB laser source from the Results tab.

To v iew re sul ts :

From the main window, select the Results tab.

The following information related to the DFB measurement is displayed in

the Results table:

³ Center wavelength/frequency: indicates the spectral center-of-mass

for the peak.

³ Peak power (dBm): indicates the peak signal power.

³ Bandwidth 3.00 dB: indicates the bandwidth measured by taking the

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

peak.

³ Left SMSR: indicates the Left side-mode suppression ratio. It is the

power difference between the main mode and the most powerful

outstanding side-mode on the left.

³ Right SMSR: indicates the Right side-mode suppression ratio. It is the

power difference between the main mode and the most powerful

outstanding side-mode on the right.

³ Worst case SMSR: indicates the power difference between the main

mode and the side-mode with the highest power.

³ Worst case SMSR position: indicates the spectral position of the worst

SMSR.

³ Left stopband: indicates the spectral position difference between the

main mode and the closest side-mode on the left.

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Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Manual de usuario Pagina 350

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