EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 111)

Optical Spectrum Analyzer 103
6 Setting Up the Instrument in
Drift Mode
Before performing a spectral analysis in the Drift mode, you must set up
your OSA module and the test application with the appropriate parameters,
as explained in this chapter.
Select the Drift test mode as explained in Selecting a Test Mode on page 18
before setting up the Drift test parameters.
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The preferences are the result displayed in the graph and tables, as
well as the job information and related comments saved with each file
(See Defining Preferences on page 105 for more details).
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The analysis parameters include the channel list details, pass-fail
threshold settings and allows you to select the noise and power
calculation methods (See Setting Up Drift Analysis Parameters on
page 123 for more details).
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The acquisition parameters include the type of measurement you want
to perform and the wavelength range (See Setting Up Acquisition
Parameters on page 159 for more details).
You can set up your unit in different manners, depending on your testing
needs. The three possible ways for Drift mode are preferred, easy and
efficient.
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The preferred way is to use the complete analysis setup parameters
and complete the information in all tables, as explained in Setting Up
Drift Analysis Parameters on page 123. This setup will be used for the
next acquisition.