Function Of The Mtau Module; Connections - Viavi 8100 V2 Series User Manual

Chapter 16 Multi Test Access Unit

Function of the MTAU module

Function of the MTAU module
The MTAU is a passive module (switch) used to route the signals from the different
measurement plug-ins to one and the same fiber.
The advantage is to be able, for example, to make all the characterization measure-
ments (insertion loss, reflectometry, chromatic dispersion, spectrum and polarization
measurements) with a single Platform 8000

Connections

The MTAU plug-ins offer a common port with 4 ports A, B,C and D. The fiber to be tested
must be connected to the common port. The other ports are connected to the measure-
ment modules, e.g. OTDR, ODM, or an external instrument.
Two Platforms can be used at each end of the link under test for maximum efficiency and
to carry out the largest number of tests in both directions.
NOTE
The MTAU is not directional. It is possible to use the common port either as
an input or as an output.
Figure 225 MTAU plug-in with 1 common & 4 ports
1.Equipped with suitable plug-ins, for example an OTDR module and an ODM module
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Output: fiber under test
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without ever disconnecting the fiber.
Inputs for connection to
the different modules
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