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Chapter 8 Optical Spectrum Measurement
On/Off-OSNR Method
Step 1: Reference measurement
1
In the Results page, select 'Ref. Acquisition' and perform (Start) an OSA
measurement (all channels ON).
All channels will be detected and the total channel power (=integrated ch-power) of each
channel will be shown and stored in the table = P_ch (Power [dBm]).
OSNR and Noise will not yet be displayed.
Step 2: Noise / OSNR measurement
1
Select 'Noise Acquisition'
2
Switch off the channel you want to measure the OSNR (one or multiple chan-
nels).
3
Select Noise Acquisition measurement (Noise Acq) and start the measurement.
The OSA will perform a scan and automatically detect the channels switched-off.
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User Manual
78000010220 Rev. 024
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Troubleshooting
