Fujikura FSM-100M, Instruction Manual, Page: 187 / 193

179
Questions and Troubleshooting
(10) Inconsistent splice loss / High splice loss
•Clean the V-grooves, fiber clamps, wind protector mirrors, and objective lenses. See
the [ Maintenance of Splicing Quality ].
•Replace the electrodes. See the [
Replace Electrodes ].
•See the “High Estimated Loss” error message section in the [
Error Message List ].
•If the secondary coated fiber has a curl or bend memory, set the fiber in such a manner
that the crown (curve) of the memory is turned upward. In particular, Nylon coated
fiber has a strong curl memory and then the splicer cannot clamp such fiber with the
coating clamp without resulting in high splice losses. In this case, splice the Nylon
coating fiber with bare fiber clamp.
•The splice loss varies according to cleave angle, arc conditions and fiber cleanliness.
•If the splice loss is still too high or inconsistent after performing the above-mentioned
remedies, contact your nearest authorized distributor. Regular service (at least once a
year) is recommended to maintain high splicing quality.
•In the case of splicing loose tube fiber with a coating clamp, the inside fiber is not
clamped well even if circumference part could be clamped. Consequently, it causes
high splice loss. In this case, clamp coating of the inside fiber or splice with a glass
clamp.
•If the coating of fiber is soft and the fiber is stripped with HJS-02 with HJS spacer, the
cleave length sometimes becomes longer due to the coating stretch (e. g. 3mm to
2mm). In this case, the splice loss becomes high because of the coating deformation
due to the discharge heat. More than 4mm cleave length is recommended for such
coating fiber.
•If a fiber with heat sensitive coating, is spliced with 3mm cleave length, fiber axis
offset will occur due to coating deformation with discharge heat. In this case, more
than 4mm cleave length is recommended. If you use 3mm cleave length, confirm that
the splice loss performance is acceptable.
•If cleaving fiber with CT-03HT-06, about 50gf tension is necessary when fiber is set to
the cleaver. Too little or too strong tension causes bad cleaves and high splice losses.
(11) Mismatch between Estimated splice loss and Actual splice loss
•The estimated loss is a calculated loss, so it can be used for reference only.
•The optical components of the splicer may need to be cleaned.
•When splicing specialty fibers, adjust [MFD-L], [MFD-R], [Core Step] and [Core
Curvature]. When splicing dissimilar fibers, also adjust [Min. Loss] and [MFD
Mismatch]. To adjust these parameters, refer to parameter settings of the other splice
modes stored in the database area.
(12) Method to operate Focus motor after splicing
•Use the [Motor Drive] function in [Maintenance Menu] while in [PAUSE1], [PAUSE
2] or [Finish] states. Press Up/Down Allow key to adjust the focus.