Agilent Technologies 86142B User Manual page 59

Using the Instrument
Calibrating Wavelength Measurements
Wavelength Cal Setup and choosing the Offset option before running the single
point calibration. To insure this offset process has provided sufficient accuracy,
the wavelength readings of the multi-wavelength meter and the OSA should be
compared to verify the wavelength accuracy and determine if a full multipoint
wavelength recalibration is necessary.
2-18