Length; Ports; Measurement Range - Agilent Technologies 86038B User Manual

Length

Ports

Measurement Range

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• In the swept mode, over-sampling the GD shape with small
wavelength increment offers the possibility of using
smoothing to reduce the noise. The 86038B automatically
provides Gaussian smoothing of the data to the resolution
limit set by the modulation frequency.
• Stepped mode can greatly improve signal to noise by allowing
the averaging of multiple samples at each measurement
wavelength.
• For more information on measurement types, refer to
and Stepped Measurement Modes" on page
Length Mode
Measure Determines the length of the test device based on
network-analyzer group delay measurements and a user-entered
refractive index value. Index values of 1 to 10 can be chosen.
This feature is intended especially for fiber and cable test
applications, but sub-millimeter accuracy can be achieved on
short devices. The procedure measures and stores the absolute
group delay of the test device at the chosen wavelength. The
displayed length in meters is based on the user-entered
refractive index, which can also be changed after the
measurement.
Specify Permits user specification of the length of the test
device in meters.
Permits specification of the ports to be used for measurement.
Multiple ports are available when an optional switch is
integrated. The port numbers are then associated with the
corresponding switch position. When no switch is included,
only the default Port 1 is available.
The start and stop wavelength settings define the x-axis limits
for both stepped and swept measurement.
Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
"Swept
77.