408-9971 Datasheet, PDF (6/7 Pages) TE Connectivity Ltd – ST Ceramic Ferrule Connector Kits and Coupling Receptacle

408-9971
8. For both type end finishes, using the.3-µm film on
the appropriate polishing pad, polish the fiber until
all the epoxy is gone. Use only a light force on the
polishing bushing. DO NOT over polish. Using the
microscope, examine the tip of the ferrule. Stop
polishing as soon as all the epoxy has been
removed.
9. For the flat end finish, clean the connector with an
alcohol fiber wipe, and dry with a lint-free cloth or
tissue.
For the PC end finish, remove the connector from
the polishing bushing and place the final polishing
film on the polishing pad. Apply a few drops of water
to an unused area of the film. Move the connector
on the water in 20-mm [.75-in.] diameter circles for
25 seconds to polish the fiber.
iNOTE NOTE
One piece of final polishing film will be sufficient for 10 to
20 connectors.
10. Clean the connector with an alcohol fiber wipe,
and wipe dry with a lint-free cloth or tissue.
3.9. Inspecting the Endface
DANGER
! NEVER inspect or look into the end of a fiber when
optical power is applied to the fiber. The infrared light
used, although it cannot be seen, can cause injury to the
eyes.
1. Inspect the polished fiber and ferrule (endface)
with the microscope. Refer to Figure 10, and check
for the following:
— Dark scratches on the endface indicate that dirt
was present during the polishing process. For PC
end finish, some scratches can be removed by
further polishing with polishing compound. Apply a
fresh drop of compound to an unused area of the
polishing cloth, and polish for 10 seconds.
Re-examine the endface. DO NOT polish again if
scratches remain. For flat end finish, polish for 15
seconds on the .3-µm film. Re-examine the
endface.
— Small pits in the endface indicate that the fiber
was polished too long on either the 5- or 1-µm film.
Some pitting might not interfere with connector
performance if it is not in the core area.
— A lot of pits in the endface indicate that the fiber
was polished too long with the 5-µm film.
— A large fracture at the edge of the fiber indicates
that the fiber was broken below the surface of the
ferrule during cleaving or initial polishing (small
chips in the outer rim of the fiber are permissible).
2. Place the protective cap on the ferrule of the
connector if the connector is not going to be mated
immediately.
Ferrule
Tip
Acceptable
Fiber
Small
Peripheral
Chips
Ferrule
Tip
Fine Polishing
Lines
Unacceptable
Dark
Scratches
Fiber
Lot of Pits
Figure 10
3.10. Using the Coupling Receptacle Kit
The coupling receptacle can be used free hanging or it
can be mounted on a panel. To mount the receptacle
on a panel, proceed as follows:
1. Cut out the panel according to the dimensions
given in Figure 11.
2. Assemble the coupling receptacle, lockwasher,
and nut as shown in Figure 11.
3. Lock the connectors into place using the coupling
nut.
iNOTE NOTE
After coupling, ALWAYS push in axially on the back of
each connector to ensure intimate contact.
4. Place the protective caps on the coupling
receptacle if the connectors are not going to be
mated immediately.
4. REPLACEMENT AND REPAIR
Kit components are not repairable. Replace any
damaged or defective components. DO NOT re-use
terminated connectors by removing the cable.
Rev L
6 of 7