Agilent Technologies 86038B User Manual page 332

Length uncertainty
Specifies the maximum difference between the measured length
of a fiber, based on a given value of the effective group refractive
index n at the wavelength of measurement, and its actual length.
The length uncertainty specification does not include any
uncertainty in the entered value of n.
Conditions: Maximum fiber length as specified, refractive index
range as specified.
Measurement: Derived from the
"Relative Group delay (rGD)
uncertainty" and "Modulation frequency" uncertainty
specification.
Note: Changes in n, e.g. due to temperature fluctuations, lead to
additional uncertainties in the length measurement. The
-5
temperature dependence of n is typically on the order of 10 /
°C.
Maximum Safe Optical Input Power
The maximum optical power that can safely be applied to the
86038B Receiver Input port without risking damage to the
receiver.
Attention! Applying more than the specified maximum safe
power may damage the receiver unit!
Measurement time
The time from starting a test device measurement until the
result is displayed on the screen.
Conditions: Measurement mode and settings as specified.
Excludes normalization measurement time.
Modulation frequency
A measurement parameter of the 86038B system specifying the
frequency of the network analyzer used for amplitude
modulation of the optical measurement signal.
Modulation frequency range
The range of modulation frequencies available for measurement
of device attributes (loss, group delay, DGD, PDL).
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Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition