EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 389)

Managing Results
Optical Spectrum Analyzer 381
Managing EDFA Test Results
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Channel index: indicates the channel number. Channel 1
corresponds to the first channel found.
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Noise figure: indicates the EDFA’s noise figure measured for the
selected channel.
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S %: indicates the current output power according to the
measured output power (Output Signal Power / [Output Signal
Power + PASE]).
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PASE: indicates the power of the spontaneous emission amplified
by EDFA.
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PSSE: indicates the power of the spontaneous emission of the
source.
4. Under Analysis parameters pane, you can view the following results:
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Channel center: indicates the channel center for the selected
channel.
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Channel width: indicates the limit within which the power values
will be considered in the channel.