As shown in the table below, HDTV-SDI
fiber-optic interface specifications are covered by ARIB Standard
BTA S-004B. Although the fiber-optic cable may have excellent characteristics
in terms of signal transmission, it may be liable to the influence
of tension or bends that exceed its permissible range, as well as
to humidity or dust. In particular, care must be exercised during
installation, since tension is more apt to be applied to the interface.
To ensure stable light signal transmission, be sure to handle the
interface properly, and correctly clean the fiber-optic connectors.
Cabling Materials and Light Characteristics
(HDTV-SDI Fiber-Optic Interface)
(AdPC polish or better)
zero-distribution single mode
Max. Spectacle Half Value
Within 1UI (673ps)
Within 0.2UI (135ps)
<Fiber-Optic System Installation
Maintaining Fiber-Optic Hybrid Connectors
The connectors sections to be cleaned
are the keys parts, including the tips and sides of ferrules, the
interior walls of alignment sleeves and the interior and exterior
of connector shells. Note that scratches and particles of foreign
matter on the tip of the ferrule can have a disabling effect on fiber-optic
transmission. The following procedures should be used when cleaning
For pugs (FUW), the interior
surfaces of alignment sleeves and the tip of ferrules are to be cleaned
with the non-alchol treated cleaning stick using a gentle stroking
action. The slender design of the cleaning stick enables alignment
sleeves to be cleaned without having to detach them.
For jack (PUW), it is important to
clean both the tips and sides of the completely protruding ferrules
with the cleaning stick.
Both the male and the female connectors
shells tend to attract dust and metal particles, so it is important
to clean both the insides and outsides using cotton gauze or similar
*Contact Canare for information on the
recommended cleaning stick.
The alignment sleeve (split sleeve)
keeps the ferrules in highly precise alignment with each other.