EXFO FTB-5230S Optical Spectrum Analyzer for FTB 200 v2 User Manual
Page 29
Preparing Your OSA/OCA for a Test
OSA/OCA
23
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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