TREND NETWORKS FiberTEK IV Guía De Referencia Rápida página 17

FIBRE OPTIC TEST LIMITS
A test limit must be selected when adding fibre tests to a LanTEK IV Job.
Four types of test limits are available; Cabling Standards, Applications,
Manual Loss Budget and Calculated Loss Budget.
EN
CHOOSING A LIMIT TYPE
Cabling Standards are limits defined by the same standards organisations
that create limits for copper cabling, namely ISO/IEC, ANSI/TIA, CENELEC/
EN and others. These limits are typically for backbone and horizontal fibre
cabling installed in commercial buildings. The limits are generic and are not
designed to support a specific application or data rate, instead the limits
are designed to support a wide range of high-performance applications. In
nearly all cases there are limits for both wavelengths in multimode or single-
mode systems.
APPLICATIONS
Applications limits are used to determine whether a specific application
such as 40 Gb/s multimode Ethernet can be supported by the fibre under
test. The pass/fail criterion are specific to the application and are always
wavelength specific. For example the 10GBase-L application has a limit for
1310nm only, while the 10GBase-E application has a limit for 1550nm only.
These applications are designed for specific types of hardware, each with its
specified operational wavelength and maximum supported distance.
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