EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 301)

Managing Results
Optical Spectrum Analyzer 293
Managing WDM Test Results
2. Select a row from the Results 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
Wavelength/Frequency deviation: indicates the difference between
the channel center wavelength/frequency and the measured signal
center wavelength/frequency.
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.