EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 31)

Preparing Your Optical Spectrum Analyzer for a Test
Optical Spectrum Analyzer 23
Performing User Calibration
Performing User Calibration
Calibrating your module can help you achieve better results. It is
particularly important when the measurement accuracy is critical or when
your OSA has experienced unusual shock or vibrations. To reach the
highest possible accuracy, you can perform a wavelength or power
calibration. Your OSA allows you to modify and read the user calibration
values, revert to the factory calibration, load and save the modified user
calibration file. The user configuration file (*.txt) contains the reference
and modified wavelength and power values.
You can perform user calibration for all tests modes. Select a test mode as
explained in Selecting a Test Mode on page 18, and follow the procedures
mentioned below for performing user calibration.
Note: The procedure for performing user calibration is the same for all test
modes. The procedure is explained with WDM mode only in this document.
I
MPORTANT
For optimal results, you must allow a minimum warm up period of
two hours for your Optical Spectrum Analyzer before performing
user calibration.
I
MPORTANT
The correction factor list must be cleared before making new
calibration measurements. If calibration measurements are made
when user correction factors are inside the module, they will affect
the measurements and the calibration results will be inapplicable.