EFB-Elektronik LC/APC-LC/APC Duplex Fibre Optic Patch Cable, OS2 single-mode 9/125µm, LSZH 2mm, 7.5m, Yellow

The EFB-Elektronik O0381.7,5 is a 7.5 m duplex OS2 single-mode 9/125 µm fibre optic patch cable with LC/APC connectors on both ends, for linking switches, servers, media converters and patch panels in racks and comms rooms.

OS2 is low-loss 9/125 µm single-mode fibre with a yellow jacket, used with 1310/1550 nm optics. With single-mode, the distance is set by the transceivers, not the cable (LR optics typically cover 10 km).

• 1 × LC/APC-LC/APC duplex patch cable, 7.5 m
• 2 × duplex clips
• 1 × individual measurement report
• 1 × information sheet

• At 7.5 m it is long enough to run between cabinets or along a room through cable trays.
• Duplex means two fibres in one cable: one carries transmit and the other receive, so one cable completes one link between two transceivers.
• APC connectors have an 8° angled end face, which keeps back-reflection very low (return loss ≥ 60 dB here). That is why APC is used on FTTH/PON, CATV/RF-over-fibre and other reflection-sensitive single-mode links.
• The LSZH (low smoke, zero halogen) jacket is the usual requirement in offices, data centres and public buildings: in a fire it gives off little smoke and no corrosive halogen gas.
• Keep the end faces covered until you plug in: a dirty connector is the most common reason a new fibre link does not come up.

• Multimode optics (SX, SR at 850 nm): they need an OM3 or OM4 multimode cable.
• UPC ports, couplers or cables (usually blue connectors): APC and UPC end faces must never be mated, as this causes high loss and can damage the end faces.
• SC or ST ports, or a mix of connector types: this cable is LC/APC on both ends.
• Copper RJ45 ports: fibre needs an optical transceiver or a media converter at each end.