EXFO FTB -5240S/5240BP Optical Spectrum Analyzer User Manual
Page 22
Preparing Your OSA for a Test
16
FTB-5240S/S-P/BP
Nulling Electrical Offsets
2. Disconnect any incoming signal to obtain an optimal accuracy.
3. Press Nulling.
You are notified that the nulling is in progress in the status bar. Nulling
should be completed in a few seconds.
Note: Several features, such as the Start button and Discover, are not available
during the nulling process.
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