Fibre optic leads

It is important to ensure you have the correct fibre leads on your network to minimise issues.

Although it is easy to pick the correct connector type, it is sometimes more difficult to ensure you have the correct grade (OM1, 2, 3, 4 or 5?!) of cable, especially as some of the fibre optic cables used to link the cabinets have no identification on the outer sheath.

We help you decide by considering the likely age of the fibre optic cable and the connector type on the fibre patching/termination enclosure.

Connector type

Although the newer LC connector offers greater density, we prefer the SC duplex connector on patch panels, as they are easier to use and provide more space on the panel for identification.

Most of the network fibre optic transceivers require an LC duplex connection, but it is a simple process to utilise a fibre patch lead with LC on one end and an alternative at the other that connects to your fibre patch panel.

Cable Grade

You may find the cable grade or a part-code on the incoming cable sheath

  • OM1 – 62.5/125μ (multi-mode)
  • OM2 – 50/125μ multi-mode
  • OM3 – 50/125μ multi-mode
  • OM4 – 50/125μ multi-mode
  • OM5 – 50/125μ multi-mode
  • OS1 or OS2 – 9/125μ (single mode)

You need a “cross” connection!

If you are fitting fibre leads for a new link, it is important to remember to “cross” one lead, as the leads are supplied as “straight through” connections.

You will need to open the plastic clip to create a cross-over lead.

So the transmit (TX) and receive (RX) ports at one end are patched to the respective RX and TX ports at the other end.

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