For an internal cord type cable:
MN1 (Kitagawa Industry Co., Ltd.)
Optical connector
Fiber cord
Reinforcing cover of external
cable or cord binding portion of
internal cord type cable
Bending radius of 25 mm or more
(Make the bending radius as large as
Cable clamp
Bending radius of 50 mm or more (for reinforcing cover)
Bending radius of 25 mm or more (for cord binding portion)
(Make the bending radius as large as possible.)
Fig. D (e) Fixing the cable with a clamp
D Any superfluous portion of the optical cable may be wound into a
loops. Should this prove necessary, make sure the diameter of each
loop is at least 150 mm (for an external cable) or at least 100 mm
(for an internal cord type cable). Winding the cable into smaller
loops may produce sharp curves that exceed the specified bending
radius limit without the user being aware. Such bending can result
in a greater transmission loss, ultimately leading to a
communication failure.
D When using a nylon band (cable tie) as a cable clamp, follow the
instructions given below. Also, take care not to apply a bending
force to one particular part of the cable when fixing it with a clamp.
Failing to clamp the cable correctly may cut or damage it.
External cable:
Do not clamp the uncovered portion of the cable with a nylon band.
When clamping the cable by the reinforcing cover, the clamping
force is not an important factor to consider. However, ensure that
the clamping force is as small as possible to ensure that the
reinforcing cover is not deformed by the clamping. If possible, the
clamping force should be 5 kg or less.
Internal cord type cable:
Lightly clamp the optical cable with a nylon band so that the cable
shield is not deformed. If possible, the clamping force should be
1 or 2 kg (make sure that no force is applied to the cable). Due care
is required when clamping the internal cord type cable because its
cable shield is weaker than the reinforcing cover of the external

Leave a Reply

Your email address will not be published. Required fields are marked *