Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Instrukcja Użytkownika Pobierz pdf (Strona 32)

100

101

Preparing Your Optical Spectrum Analyzer for a Test

24 FTB-5240S/5240BP

Performing User Calibration

A high level sequence of steps to perform user calibration are listed below,

with the detailed instructions in the following procedures.

³ Proper warm-up is required before performing user calibration.

³ If user correction factors are present in the module (indicated by a

message in calibration page),

³ save a backup copy of the correction factors (optional but strongly

recommended).

³ clear user correction factors.

³ Make measurements.

³ Write measurement to text file according to following format.

³ First column: reference wavelength in nm

³ Second column: wavelength (in nm) read using the OSA

application and module

³ Third column: reference power in dBm

³ Fourth column: power (in dBm) read using the OSA application

and module

100 calibration points limit in the application. Each value in the file

must be separated using semi-colon (;) character.

³ Write new correction factors inside the module

³ Load the text file built at preceding step

³ Press Write to Module.

The application shows a warning message indicating to clear

correction factors before making new measurements

³ Verify that calibration points are properly applied.

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