Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 291 / 874

Chapter 17 Hardware procedures 291
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Procedure steps
1 If the connector is in use, disconnect it from the function processor (FP).
If the connector is not in use, remove the dust cap to expose the ferrule.
The cap is removed by pushing the cap and the ferrule together,
squeezing the release tab and then pulling off the cap.
If an inline attenuator is used for the connection at the FP end, the
receptacles of the attenuator and the connectors that plug into it must also
be cleaned according to its manufacturer’s instructions.
2 Holding a can of compressed clean-room grade gas upright, blow the
surface of the ferrule. Avoid having propellant fluid coat the connector.
Do not blow onto the ferrule with your breath. Moisture from your breath
will contaminate the surface.
3 Inspect the fiber endface with an appropriate microscope. Replace the
cap if the ferrule is clean. If particles are still present proceed with step 4.
4 Use the plastic squeeze bottle to apply 1 drop of isopropyl alcohol on a
ferrule.
Do not allow the alcohol to dry on the connector because it will leave a
residual film on the ferrule.
5 While the ferrule is wet, use a Corning Cable Systems, universal
connector cleaning cassette. Do not use a substitute. Flip up the flap of
the cassette to expose the cleaning surface. Position the ferrule so the
fiber ends are in contact with the cleaning surface. The ferrule should be
perpendicular to the cassette so it creates a “T” with the cleaning surface.
The cleaning cassette can be used for MT-RJ connectors that have pins
or are pinless. Use the appropriate cleaning surface for the ferrule you are
cleaning.
6 Turn the cogwheel on the cleaning cassette to advance the cleaning
surface.
WARNUNG
Gefahr von Augenverletzungen durch Laserstrahlen
Blicken Sie nie direkt auf das Ende eines Glasfaserkabels,
und überprüfen Sie auch einzelne Faserenden nicht mit
einem optischen Gerät, wenn Sie nicht sicher sind, daß das
andere Kabelende nicht angeschlossen ist. Der über die
Glasfasern übertragene Laser kann die menschliche
Netzhaut verletzen.