Pre-terminated Fiber Cables – Difference Between Trunk, Harness And Patch Cable Types

Irrespective of the years of experience you may have about setting up the network infrastructures, it comes to naught if you still don't choose the correct cables while laying out. By choosing between a pre-terminated Fiber Trunk, Harness, and Patch Cables, you not only reduce the installation time considerably (around 60%) but also cost involved in manually testing every termination. Even then, the knowledge of where to use which type of cable to implement at what instance is something that most people tend to miss out on.

Types of Fiber Optic Cables

Trunk Cable

A trunk cable is generally a set of multiple fibers ranging from 4 to 144 bunched together in a single cable. This makes it strong enough to support multiple users at the same time without running individual threads for each user. This type is usually the backbone of the cabling infrastructure and the vital source of connection between the server & different appliances such as routers, switches, or patch panels.

Fiber Optic Harness

A fiber optic harness is generally the component that follows a fiber optic trunk cable. The harness is to break the multiple threads into pairs of 4,6,8 or 12 discrete connectors. It is generally used to feed the connectors into active equipment. Special care needs to be taken while placing the order for the pre-terminated harness. Maintain equal length for each connector from the outer covering (ideally 30mm or 1.18" long) to avoid any signal mismatch.

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