Viavi MTS 4000 Base Unit, User Manual

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Chapter 13 Maintenance and Troubleshooting
Cleaning
User Manual 77000000206 Rev. 007 199
Cleaning
Cleaning plates
and housings
The front and rear plates and the housings may become tarnished with
handling. To clean them, use only a rag moistened with soapy water.
Never use any product containing acetone, trichloro-ethylene, benzine or
alcohol, as these will attack the printed markings.
Cleaning the
screen
To clean the screen, use an antistatic product.
Precautions relating to optical connections
– The normal operating life of an optical connector is usually of the
order of a few hundred manipulations. It is therefore advisable to
manipulate the optical connections of the 4000 Platform as rarely as
possible.
– The proper operation of the instrument and its accuracy of measure-
ment are dependent on the cleanliness of the environment and the
optical connectors as well as the care taken in its manipulation.
– The optical connectors must therefore be clean and dust-free. If the
optical connection is not being used, protect the connections of
4000 Platform using the protective plugs provided.
As an example, the results of measurements made with connectors that
have not been cleaned will display an error of the order of 10% for all
measurements. This error is additional to other errors inherent in the
measurement process and due, for example, to the quality of the fiber
(circularity and concentricity), the means of connection (axis alignment,
distance between fiber faces, quality of fiber faces) and propagation
modes.
Cleaning the
optical cable
connector
– Use a non-linting type of paper, such as Joseph paper, soaked in
isopropylic alcohol.
– Pay particular attention to the polished face of the fiber, rubbing it in
a direction perpendicular to the axis of the fiber.