Precautions - H3C S7500E Series Installation Manual

Fiber connector
Fiber connectors are indispensable passive components in an optical fiber communication system. They
allow the removable connection between optical channels, which makes the optical system debugging
and maintenance more convenient and the transit dispatching of the system more flexible.
Figure 64 Appearance of an SC connector
Figure 65 Appearance of an LC connector

Precautions

• Make sure the fiber connector and fiber type match the transceiver module type.
The optical interfaces on some cards of the S7500E series have shielded covers. Remove the
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shielded covers before using the optical interfaces. Optical interfaces must be installed with
shielded covers when they are not in use. Keep them safely.
• Fiber connectors must be protected under safe and reliable outer packing, and be fitted with dust
caps. Fiber connectors must be installed with dust caps when they are not in use. Take care not to
scratch their end face. Replace the dust cap if it is loose or polluted.
Before connecting a fiber, use dust free paper and absolute alcohol to clean the end face of the
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fiber connector. You can brush the end face only in one direction. You also need to brush the end
face of the other fiber connector.
Never bend or curve a fiber when connecting it. After a fiber is installed well, the bend radius must
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be not less than 40 mm (the minimum dynamic bend radius is 20 D, and the minimum static bend
radius is 10 D. D indicates the outer diameter of fiber jackets).
If the fiber has to pass through a metallic board hole, the hole must have a sleek and fully filleted
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surface (the filleting radius must be not less than 2 mm). When passing through a metallic board
hole or bending along the acute side of mechanical parts, the fiber must wear jackets or cushions.
Insert and remove a plug with care. Never exert a fierce force to the fiber or plug; otherwise the
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plug may be damaged or the fiber may be broken. Never pull, press or extrude the fiber fiercely.
For the allowed maximum tensile load and crush load, see Table
154
81.