82Figure 42 Appearance of an SC connectorFigure 43 Appearance of an LC connectorPrecautions• Make sure the fiber connector and fiber type match the transceiver module type.• The optical interfaces on some cards of the H3C S10500 Switch Series have shielded covers.Remove the shielded covers before using the optical interfaces. Optical interfaces must be installedwith 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 dustcaps. Fiber connectors must be installed with dust caps when they are not in use. Take care not toscratch 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 thefiber connector. You can brush the end face only in one direction. You also need to brush the endface of the other fiber connector.• Never bend or curve a fiber when connecting it. After a fiber is installed well, the bend radius mustbe not less than 40 mm (the minimum dynamic bend radius is 20 D, and the minimum static bendradius 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 filletedsurface (the filleting radius must be not less than 2 mm). When passing through a metallic boardhole 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 theplug 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 49.SFP+ cableYou can use SFP+ cables to connect the SFP+ interfaces for the H3C S10500 Switch Series. SFP+ cablessupport the SFP+ standard and use 10 G SFP+ Cu standard cables.
