Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Uživatelský manuál stáhnout pdf (Strana 345)

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101

Managing Results

Optical Spectrum Analyzer 337

Managing Drift Test Results

2. Select a channel from the Channel History tab to view the channel

results for the selected channel.

³ Channel name: indicates the name of the channel as defined in the

channel list.

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).

³ Noise: indicates the level of the noise for the selected channel.

³ Bandwidth 3.00 dB: indicates bandwidth measured by taking the

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

peak.

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Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Uživatelský manuál Strana 345

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