Atec Agilent-81618A Manuel d'utilisateur télécharger pdf (Page 26)

Specifications Definition of Terms

26 Agilent 81618A/9A and Agilent 81622B/3B/4B/6B/7B/8B User’s Guide, Second Edition

Return loss

The ratio of the incident power to the reflected power expressed in dB.

Symbol: RL.

Conditions: the return loss excludes any reflections from the fiber

end used as radiation source.

Spectral width of optical source

Full width at half maximum. The 3 dB width of the optical spectrum,

expressed in nm. Symbol: FWHM.

Total uncert ai nty

The uncertainty for a specified set of operating conditions, including

noise and drift.

Conditions: power level, beam diameter or fiber type, numerical

aperture, wavelength, spectral width, ambient temperature, re-

calibration period as specified. →Noise and drift observed over a

specified observation time, with a temperature change of not more

than ±∆T.

Uncertainty at reference conditions

The uncertainty for the specified set of reference conditions, including

all uncertainties in the calibration chain from the national laboratory

to the test meter.

Wavelength range

The range of wavelengths for which the power meter is calibrated.

Note: Selectable wavelength setting of the power meter for useful

power measurements (operating wavelength range).

Literature

[1]Fiber optic test and measurement, Hewlett Packard Professional

Books, edited by Prentice Hall, ISBN 0-13-534330-5

RL 10

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Atec Agilent-81618A Manuel d'utilisateur Page 26